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Zhuo M, Sakuraba Y, Yanagisawa S. Dof1.7 and NIGT1 transcription factors mediate multilayered transcriptional regulation for different expression patterns of NITRATE TRANSPORTER2 genes under nitrogen deficiency stress. New Phytol 2024; 242:2132-2147. [PMID: 38523242 DOI: 10.1111/nph.19695] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/31/2023] [Accepted: 03/01/2024] [Indexed: 03/26/2024]
Abstract
Elucidating the mechanisms regulating nitrogen (N) deficiency responses in plants is of great agricultural importance. Previous studies revealed that decreased expression of NITRATE-INDUCIBLE GARP-TYPE TRANSCRIPTIONAL REPRESSOR1 (NIGT1) transcriptional repressor genes upon N deficiency is involved in N deficiency-inducible gene expression in Arabidopsis thaliana. However, our knowledge of the mechanisms controlling N deficiency-induced changes in gene expression is still limited. Through the identification of Dof1.7 as a direct target of NIGT1 repressors and a novel N deficiency response-related transcriptional activator gene, we here show that NIGT1 and Dof1.7 transcription factors (TFs) differentially regulate N deficiency-inducible expression of three high-affinity nitrate transporter genes, NRT2.1, NRT2.4, and NRT2.5, which are responsible for most of the soil nitrate uptake activity of Arabidopsis plants under N-deficient conditions. Unlike NIGT1 repressors, which directly suppress NRT2.1, NRT2.4, and NRT2.5 under N-sufficient conditions, Dof1.7 directly activated only NRT2.5 but indirectly and moderately activated NRT2.1 and NRT2.4 under N-deficient conditions, probably by indirectly decreasing NIGT1 expression. Thus, Dof1.7 converted passive transcriptional activation into active and potent transcriptional activation, further differentially enhancing the expression of NRT2 genes. These findings clarify the mechanism underlying different expression patterns of NRT2 genes upon N deficiency, suggesting that time-dependent multilayered transcriptional regulation generates complicated expression patterns of N deficiency-inducible genes.
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Affiliation(s)
- Mengna Zhuo
- Agro-Biotechnology Research Center, Graduate School of Agricultural and Life Sciences, The University of Tokyo, Yayoi 1-1-1, Bunkyo-ku, Tokyo, 113-8657, Japan
| | - Yasuhito Sakuraba
- Agro-Biotechnology Research Center, Graduate School of Agricultural and Life Sciences, The University of Tokyo, Yayoi 1-1-1, Bunkyo-ku, Tokyo, 113-8657, Japan
| | - Shuichi Yanagisawa
- Agro-Biotechnology Research Center, Graduate School of Agricultural and Life Sciences, The University of Tokyo, Yayoi 1-1-1, Bunkyo-ku, Tokyo, 113-8657, Japan
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2
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Li B, Wang XQ, Li QY, Xu D, Li J, Hou WT, Chen Y, Jiang YL, Zhou CZ. Allosteric regulation of nitrate transporter NRT via the signaling protein PII. Proc Natl Acad Sci U S A 2024; 121:e2318320121. [PMID: 38457518 PMCID: PMC10945777 DOI: 10.1073/pnas.2318320121] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/21/2023] [Accepted: 01/10/2024] [Indexed: 03/10/2024] Open
Abstract
Coordinated carbon and nitrogen metabolism is crucial for bacteria living in the fluctuating environments. Intracellular carbon and nitrogen homeostasis is maintained by a sophisticated network, in which the widespread signaling protein PII acts as a major regulatory hub. In cyanobacteria, PII was proposed to regulate the nitrate uptake by an ABC (ATP-binding cassette)-type nitrate transporter NrtABCD, in which the nucleotide-binding domain of NrtC is fused with a C-terminal regulatory domain (CRD). Here, we solved three cryoelectron microscopy structures of NrtBCD, bound to nitrate, ATP, and PII, respectively. Structural and biochemical analyses enable us to identify the key residues that form a hydrophobic and a hydrophilic cavity along the substrate translocation channel. The core structure of PII, but not the canonical T-loop, binds to NrtC and stabilizes the CRD, making it visible in the complex structure, narrows the substrate translocation channel in NrtB, and ultimately locks NrtBCD at an inhibited inward-facing conformation. Based on these results and previous reports, we propose a putative transport cycle driven by NrtABCD, which is allosterically inhibited by PII in response to the cellular level of 2-oxoglutarate. Our findings provide a distinct regulatory mechanism of ABC transporter via asymmetrically binding to a signaling protein.
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Affiliation(s)
- Bo Li
- Division of Life Sciences and Medicine, School of Life Sciences, University of Science and Technology of China, Hefei230027, China
| | - Xiao-Qian Wang
- Division of Life Sciences and Medicine, School of Life Sciences, University of Science and Technology of China, Hefei230027, China
| | - Qin-Yao Li
- Division of Life Sciences and Medicine, School of Life Sciences, University of Science and Technology of China, Hefei230027, China
| | - Da Xu
- Division of Life Sciences and Medicine, School of Life Sciences, University of Science and Technology of China, Hefei230027, China
| | - Jing Li
- Division of Life Sciences and Medicine, School of Life Sciences, University of Science and Technology of China, Hefei230027, China
| | - Wen-Tao Hou
- Division of Life Sciences and Medicine, School of Life Sciences, University of Science and Technology of China, Hefei230027, China
| | - Yuxing Chen
- Division of Life Sciences and Medicine, School of Life Sciences, University of Science and Technology of China, Hefei230027, China
| | - Yong-Liang Jiang
- Division of Life Sciences and Medicine, School of Life Sciences, University of Science and Technology of China, Hefei230027, China
| | - Cong-Zhao Zhou
- Division of Life Sciences and Medicine, School of Life Sciences, University of Science and Technology of China, Hefei230027, China
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Tarkowski ŁP, Clochard T, Blein-Nicolas M, Zivy M, Baillau T, Abadie C, Morère-Le Paven MC, Limami AM, Tcherkez G, Montrichard F. The nitrate transporter-sensor MtNPF6.8 regulates the branched chain amino acid/pantothenate metabolic pathway in barrel medic (Medicago truncatula Gaertn.) root tip. Plant Physiol Biochem 2024; 206:108213. [PMID: 38043253 DOI: 10.1016/j.plaphy.2023.108213] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/15/2023] [Revised: 11/02/2023] [Accepted: 11/19/2023] [Indexed: 12/05/2023]
Abstract
Nitrogen is the most limiting nutrient for plants, and it is preferentially absorbed in the form of nitrate by roots, which adapt to nitrate fluctuations by remodelling their architecture. Although core mechanisms of the response to nitrate availability are relatively well-known, signalling events controlling root growth and architecture have not all been identified, in particular in Legumes. However, the developmental effect of nitrate in Legumes is critical since external nitrate not only regulates root architecture but also N2-fixing nodule development. We have previously shown that in barrel medic (Medicago truncatula), the nitrate transporter MtNPF6.8 is required for nitrate sensitivity in root tip. However, uncertainty remains as to whether nitrogen metabolism itself is involved in the MtNPF6.8-mediated response. Here, we examine the metabolic effects of MtNPF6.8-dependent nitrate signalling using metabolomics and proteomics in WT and mtnpf6.8 root tips in presence or absence of nitrate. We found a reorchestration of metabolism due to the mutation, in favour of the branched chain amino acids/pantothenate metabolic pathway, and lipid catabolism via glyoxylate. That is, the mtnpf6.8 mutation was likely associated with a specific rerouting of acetyl-CoA production (glyoxylic cycle) and utilisation (pantothenate and branched chain amino acid synthesis). In agreement with our previous findings, class III peroxidases were confirmed as the main protein class responsive to nitrate, although in an MtNPF6.8-independent fashion. Our data rather suggest the involvement of other pathways within mtnpf6.8 root tips, such as Ca2+ signalling or cell wall methylation.
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Affiliation(s)
| | | | - Mélisande Blein-Nicolas
- GQE - Le Moulon, Université Paris-Saclay, INRAE, CNRS, AgroParisTech, Gif-sur-Yvette, France
| | - Michel Zivy
- GQE - Le Moulon, Université Paris-Saclay, INRAE, CNRS, AgroParisTech, Gif-sur-Yvette, France
| | - Thierry Baillau
- GQE - Le Moulon, Université Paris-Saclay, INRAE, CNRS, AgroParisTech, Gif-sur-Yvette, France
| | - Cyril Abadie
- Univ Angers, Institut Agro, INRAE, IRHS, SFR QUASAV, Angers, France
| | | | - Anis M Limami
- Univ Angers, Institut Agro, INRAE, IRHS, SFR QUASAV, Angers, France
| | - Guillaume Tcherkez
- Univ Angers, Institut Agro, INRAE, IRHS, SFR QUASAV, Angers, France; Research School of Biology, ANU Joint College of Sciences, Australian National University, Canberra, Australia
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Li G, Chang X, Dong Y, Wang M, Yang J, Hu G, Shumei J. Cloning and expression study of a high-affinity nitrate transporter gene from Zea mays L. Plant Signal Behav 2023; 18:2163342. [PMID: 36645908 PMCID: PMC9851203 DOI: 10.1080/15592324.2022.2163342] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 10/22/2022] [Revised: 12/13/2022] [Accepted: 12/23/2022] [Indexed: 06/17/2023]
Abstract
A nitrate transporter gene, named B46NRT2.1, from salt-tolerant Zea mays L. B46 has been cloned. B46NRT2.1 contained the same domain belonging to the major facilitator superfamily (PLN00028). The results of the phylogenetic tree indicated that B46NRT2.1 exhibits sequence similarity and the closest relationship with those known nitrate transporters of the NRT2 family. Through RT-qPCR, we found that the expression of B46NRT2.1 mainly happens in the root and leaf. Moreover, the treatment with NaCl, Na2CO3, and NaHCO3 could significantly increase the expression of B46NRT2.1. B46NRT2.1 was located in the plasma membrane. Through the study of yeast and plant salt response brought by B46NRT2.1 overexpression, we have preliminary knowledge that the expression of B46NRT2.1 makes yeast and plants respond to salt shock. There are 10 different kinds of cis-acting regulatory elements (CRES) in the promotor sequences of B46NRT2.1 gene using the PlantCARE web server to analyze. It mainly includes hormone response, abscisic acid, salicylic acid, gibberellin, methyl jasmonate, and auxin. The B46NRT2.1 gene's co-expression network showed that it was co-expressed with a number of other genes in several biological pathways, including regulation of NO3 long-distance transit, modulation of nitrate sensing and metabolism, nitrate assimilation, and transduction of Jasmonic acid-independent wound signal. The results of this work should serve as a good scientific foundation for further research on the functions of the NRT2 gene family in plants (inbred line B46), and this research adds to our understanding of the molecular mechanisms under salt tolerance.
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Affiliation(s)
- Guoliang Li
- Heilongjiang Academy of Agricultural Sciences, Harbin, Heilongjiang, China
| | - Xu Chang
- Key Laboratory of Saline-Alkali Vegetation Ecology Restoration, Ministry of Education, College of Life Sciences, Northeast Forestry University, Harbin, Heilongjiang, China
| | - Yi Dong
- Key Laboratory of Saline-Alkali Vegetation Ecology Restoration, Ministry of Education, College of Life Sciences, Northeast Forestry University, Harbin, Heilongjiang, China
- Aulin College, Northeast Forestry University, Harbin, Heilongjiang, China
| | - Mingquan Wang
- Heilongjiang Academy of Agricultural Sciences, Harbin, Heilongjiang, China
| | - Jianfei Yang
- Heilongjiang Academy of Agricultural Sciences, Harbin, Heilongjiang, China
| | - Guanghui Hu
- Heilongjiang Academy of Agricultural Sciences, Harbin, Heilongjiang, China
| | - Jin Shumei
- Key Laboratory of Saline-Alkali Vegetation Ecology Restoration, Ministry of Education, College of Life Sciences, Northeast Forestry University, Harbin, Heilongjiang, China
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Seo JS, Kim SH, Shim JS, Um T, Oh N, Park T, Kim YS, Oh SJ, Kim JK. The rice NUCLEAR FACTOR-YA5 and MICRORNA169a module promotes nitrogen utilization during nitrogen deficiency. Plant Physiol 2023; 194:491-510. [PMID: 37723121 PMCID: PMC10756765 DOI: 10.1093/plphys/kiad504] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/14/2023] [Revised: 08/29/2023] [Accepted: 08/31/2023] [Indexed: 09/20/2023]
Abstract
Nitrogen (N) is essential for plant growth and development. Therefore, understanding its utilization is essential for improving crop productivity. However, much remains to be learned about plant N sensing and signaling. Here, rice (Oryza sativa) NUCLEAR FACTOR-YA5 (OsNF-YA5) expression was tightly regulated by N status and induced under N-deficient conditions. Overexpression (OE) of OsNF-YA5 in rice resulted in increased chlorophyll levels and delayed senescence compared to control plants under normal N conditions. Agronomic traits were significantly improved in OE plants and impaired in knockout mutants under N-deficient conditions. Using a dexamethasone-inducible system, we identified the putative targets of OsNF-YA5 that include amino acid, nitrate/peptide transporters, and NITRATE TRANSPORTER 1.1A (OsNRT1.1A), which functions as a key transporter in rice. OsNF-YA5 directly enhanced OsNRT1.1A expression and N uptake rate under N-deficient conditions. Besides, overexpression of OsNF-YA5 also enhanced the expression of GLUTAMINE SYNTHETASE 1/2 (GS1/2) and GLUTAMINE OXOGLUTARATE AMINOTRANSFERASE 1/2 (GOGAT1/2), increasing free amino acid contents under N-deficient conditions. Osa-miR169a expression showed an opposite pattern with OsNF-YA5 depending on N status. Further analysis revealed that osa-miR169a negatively regulates OsNF-YA5 expression and N utilization, demonstrating that an OsNF-YA5/osa-miR169a module tightly regulates rice N utilization for adaptation to N status.
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Affiliation(s)
- Jun Sung Seo
- GreenBio Science & Technology, Seoul National University, Pyeongchang 25354, Korea
| | - Sung Hwan Kim
- Crop Biotechnology Institute, Graduate School of International Agricultural Technology, Seoul National University, Pyeongchang 25354, Korea
| | - Jae Sung Shim
- GreenBio Science & Technology, Seoul National University, Pyeongchang 25354, Korea
- School of Biological Sciences and Technology, Chonnam National University, Gwangju 61186, Korea
| | - Taeyoung Um
- GreenBio Science & Technology, Seoul National University, Pyeongchang 25354, Korea
| | - Nuri Oh
- Crop Biotechnology Institute, Graduate School of International Agricultural Technology, Seoul National University, Pyeongchang 25354, Korea
| | - Taehyeon Park
- School of Biological Sciences and Technology, Chonnam National University, Gwangju 61186, Korea
| | - Youn Shic Kim
- GreenBio Science & Technology, Seoul National University, Pyeongchang 25354, Korea
| | - Se-Jun Oh
- LaSemilla Co. Ltd., Pyeongchang 25354, Korea
| | - Ju-Kon Kim
- GreenBio Science & Technology, Seoul National University, Pyeongchang 25354, Korea
- Crop Biotechnology Institute, Graduate School of International Agricultural Technology, Seoul National University, Pyeongchang 25354, Korea
- School of Biological Sciences and Technology, Chonnam National University, Gwangju 61186, Korea
- LaSemilla Co. Ltd., Pyeongchang 25354, Korea
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6
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Sigalas PP, Buchner P, Kröper A, Hawkesford MJ. The Functional Diversity of the High-Affinity Nitrate Transporter Gene Family in Hexaploid Wheat: Insights from Distinct Expression Profiles. Int J Mol Sci 2023; 25:509. [PMID: 38203680 PMCID: PMC10779101 DOI: 10.3390/ijms25010509] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/28/2023] [Revised: 12/22/2023] [Accepted: 12/23/2023] [Indexed: 01/12/2024] Open
Abstract
High-affinity nitrate transporters (NRT) are key components for nitrogen (N) acquisition and distribution within plants. However, insights on these transporters in wheat are scarce. This study presents a comprehensive analysis of the NRT2 and NRT3 gene families, where the aim is to shed light on their functionality and to evaluate their responses to N availability. A total of 53 NRT2s and 11 NRT3s were identified in the bread wheat genome, and these were grouped into different clades and homoeologous subgroups. The transcriptional dynamics of the identified NRT2 and NRT3 genes, in response to N starvation and nitrate resupply, were examined by RT-qPCR in the roots and shoots of hydroponically grown wheat plants through a time course experiment. Additionally, the spatial expression patterns of these genes were explored within the plant. The NRT2s of clade 1, TaNRT2.1-2.6, showed a root-specific expression and significant upregulation in response to N starvation, thus emphasizing a role in N acquisition. However, most of the clade 2 NRT2s displayed reduced expression under N-starved conditions. Nitrate resupply after N starvation revealed rapid responsiveness in TaNRT2.1-2.6, while clade 2 genes exhibited gradual induction, primarily in the roots. TaNRT2.18 was highly expressed in above-ground tissues and exhibited distinct nitrate-related response patterns for roots and shoots. The TaNRT3 gene expression closely paralleled the profiles of TaNRT2.1-2.6 in response to nitrate induction. These findings enhance the understanding of NRT2 and NRT3 involvement in nitrogen uptake and utilization, and they could have practical implications for improving nitrogen use efficiency. The study also recommends a standardized nomenclature for wheat NRT2 genes, thereby addressing prior naming inconsistencies.
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Affiliation(s)
- Petros P. Sigalas
- Rothamsted Research, West Common, Harpenden AL5 2JQ, UK; (P.B.); (M.J.H.)
| | - Peter Buchner
- Rothamsted Research, West Common, Harpenden AL5 2JQ, UK; (P.B.); (M.J.H.)
| | - Alex Kröper
- Faculty of Agronomy, University of Hohenheim, 70599 Stuttgart, Germany;
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Wang J, Wang L, Zhang X, Li S, Wang X, Yang L, Wu F, Su H. Genome-wide identification of nitrate transporter 1/peptide transporter family (NPF) genes reveals that PaNPF5.5 enhances nitrate uptake in sweet cherry under high nitrate condition. Gene 2023; 888:147797. [PMID: 37708922 DOI: 10.1016/j.gene.2023.147797] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/17/2023] [Revised: 09/10/2023] [Accepted: 09/11/2023] [Indexed: 09/16/2023]
Abstract
NITRATE TRANSPORTER 1 (NRT1)/PEPTIDETRANSPORTER (PTR) family (NPF) plays a significant role in nitrate transport. However, little is known about the NPF genes in sweet cherry. In this study, a total of 60 PaNPF genes in sweet cherry were identified by bioinformatics, which were divided into 8 families. Transcriptomic analysis showed that most PaNPF genes responded to both low and high nitrate conditions, especially PaNPF5.5, which was highly up-regulated under high nitrate condition. Molecular analysis showed that PaNPF5.5 was a transporter localized to the cell membrane. Further functional studies found that PaNPF5.5 overexpression promoted the growth of sweet cherry rootstock Gisela 6 by accelerating the nitrogen absorption process under high nitrate environment. Taken together, we believe that PaNPF5.5 plays an important role in regulating the transport of nitrate at high nitrate conditions, and provides a promising method for improving nitrate absorption efficiency at nitrogen excess environment.
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Affiliation(s)
- Jingtao Wang
- School of Agriculture, Ludong University, Yantai 264025, China; College of Life Sciences, Ludong University, Yantai 264025, China
| | - Lei Wang
- College of Life Sciences, Ludong University, Yantai 264025, China
| | - Xu Zhang
- Yantai Academy of Agricultural Sciences, Yantai, Shandong 264025, China
| | - Songlin Li
- School of Agriculture, Ludong University, Yantai 264025, China
| | - Xiaohui Wang
- School of Agriculture, Ludong University, Yantai 264025, China
| | - Lina Yang
- Department of Genetics and Cell Biology, Basic Medical College, Qingdao University, Qingdao 266071, China
| | - Fanlin Wu
- School of Agriculture, Ludong University, Yantai 264025, China.
| | - Hongyan Su
- College of Agriculture and Forestry Sciences, Linyi University, Linyi 276000, China.
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Li D, Wu X, Huang C, Lin Q, Wang Y, Yang X, Wang C, Xuan Y, Wei S, Mei Q. Enhanced Rice Resistance to Sheath Blight through Nitrate Transporter 1.1B Mutation without Yield Loss under NH 4+ Fertilization. J Agric Food Chem 2023; 71:19958-19969. [PMID: 38085756 DOI: 10.1021/acs.jafc.3c05350] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/21/2023]
Abstract
Nitrogen fertilization can promote rice yield but decrease resistance to sheath blight (ShB). In this study, the nitrate transporter 1.1b (nrt1.1b) mutant that exhibited less susceptibility to ShB but without compromising yield under NH4+ fertilization was screened. NRT1.1B's regulation of ShB resistance was independent of the total nitrogen concentration in rice under NH4+ conditions. In nrt1.1b mutant plants, the NH4+ application modulated auxin signaling, chlorophyll content, and phosphate signaling to promote ShB resistance. Furthermore, the findings indicated that NRT1.1B negatively regulated ShB resistance by positively modulating the expression of H+-ATPase gene OSA3 and phosphate transport gene PT8. The mutation of OSA3 and PT8 promoted ShB resistance by increasing the apoplastic pH in rice. Our study identified the ShB resistance mutant nrt1.1b, which maintained normal nitrogen use efficiency without compromising yield.
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Affiliation(s)
- Dandan Li
- College of Plant Protection, Shenyang Agricultural University, Shenyang, Liaoning 110866, People's Republic of China
| | - Xianxin Wu
- Institute of Agricultural Quality Standards and Testing Technology, Liaoning Academy of Agricultural Sciences, Shenyang, Liaoning 110161, People's Republic of China
| | - Chunyan Huang
- College of Plant Protection, Shenyang Agricultural University, Shenyang, Liaoning 110866, People's Republic of China
| | - Qiujun Lin
- Institute of Agricultural Quality Standards and Testing Technology, Liaoning Academy of Agricultural Sciences, Shenyang, Liaoning 110161, People's Republic of China
| | - Yan Wang
- College of Plant Protection, Shenyang Agricultural University, Shenyang, Liaoning 110866, People's Republic of China
| | - Xu Yang
- Microelement Research Center, College of Resources & Environment, Huazhong Agricultural University, Wuhan 430070, People's Republic of China
| | - Chuang Wang
- Microelement Research Center, College of Resources & Environment, Huazhong Agricultural University, Wuhan 430070, People's Republic of China
| | - Yuanhu Xuan
- College of Plant Protection, Shenyang Agricultural University, Shenyang, Liaoning 110866, People's Republic of China
| | - Songhong Wei
- College of Plant Protection, Shenyang Agricultural University, Shenyang, Liaoning 110866, People's Republic of China
| | - Qiong Mei
- College of Plant Protection, Shenyang Agricultural University, Shenyang, Liaoning 110866, People's Republic of China
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Wang H, Yan X, Du Q, Yan P, Xi J, Meng X, Li X, Liu H, Liu G, Fu Z, Tang J, Li WX. Maize Dek407 Encodes the Nitrate Transporter 1.5 and Is Required for Kernel Development. Int J Mol Sci 2023; 24:17471. [PMID: 38139299 PMCID: PMC10743814 DOI: 10.3390/ijms242417471] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/19/2023] [Revised: 11/30/2023] [Accepted: 12/11/2023] [Indexed: 12/24/2023] Open
Abstract
The kernel serves as the storage organ and harvestable component of maize, and it plays a crucial role in determining crop yield and quality. Understanding the molecular and genetic mechanisms of kernel development is of considerable importance for maize production. In this study, we obtained a mutant, which we designated defective kernel 407 (dek407), through ethyl methanesulfonate mutagenesis. The dek407 mutant exhibited reduced kernel size and kernel weight, as well as delayed grain filling compared with those of the wild type. Positional cloning and an allelism test revealed that Dek407 encodes a nitrate transporter 1/peptide transporter family (NPF) protein and is the allele of miniature 2 (mn2) that was responsible for a poorly filled defective kernel phenotype. A transcriptome analysis of the developing kernels showed that the mutation of Dek407 altered the expression of phytohormone-related genes, especially those genes associated with indole-3-acetic acid synthesis and signaling. Phytohormone measurements and analysis indicated that the endogenous indole-3-acetic acid content was significantly reduced by 66% in the dek407 kernels, which may be the primary cause of the defective phenotype. We further demonstrated that natural variation in Dek407 is associated with kernel weight and kernel size. Therefore, Dek407 is a potential target gene for improvement of maize yield.
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Affiliation(s)
- Hongqiu Wang
- National Engineering Laboratory for Crop Molecular Breeding, Institute of Crop Sciences, Chinese Academy of Agricultural Sciences, Beijing 100081, China
- National Key Laboratory of Wheat and Maize Crop Science, College of Agronomy, Henan Agricultural University, Zhengzhou 450002, China
- The Shennong Laboratory, Zhengzhou 450002, China
| | - Xiaolan Yan
- National Key Laboratory of Wheat and Maize Crop Science, College of Agronomy, Henan Agricultural University, Zhengzhou 450002, China
- The Shennong Laboratory, Zhengzhou 450002, China
| | - Qingguo Du
- National Engineering Laboratory for Crop Molecular Breeding, Institute of Crop Sciences, Chinese Academy of Agricultural Sciences, Beijing 100081, China
| | - Pengshuai Yan
- National Engineering Laboratory for Crop Molecular Breeding, Institute of Crop Sciences, Chinese Academy of Agricultural Sciences, Beijing 100081, China
- National Key Laboratory of Wheat and Maize Crop Science, College of Agronomy, Henan Agricultural University, Zhengzhou 450002, China
- The Shennong Laboratory, Zhengzhou 450002, China
| | - Jinjin Xi
- National Key Laboratory of Wheat and Maize Crop Science, College of Agronomy, Henan Agricultural University, Zhengzhou 450002, China
- The Shennong Laboratory, Zhengzhou 450002, China
| | - Xiaoruo Meng
- National Key Laboratory of Wheat and Maize Crop Science, College of Agronomy, Henan Agricultural University, Zhengzhou 450002, China
- The Shennong Laboratory, Zhengzhou 450002, China
| | - Xuguang Li
- National Key Laboratory of Wheat and Maize Crop Science, College of Agronomy, Henan Agricultural University, Zhengzhou 450002, China
- The Shennong Laboratory, Zhengzhou 450002, China
| | - Huijian Liu
- National Key Laboratory of Wheat and Maize Crop Science, College of Agronomy, Henan Agricultural University, Zhengzhou 450002, China
- The Shennong Laboratory, Zhengzhou 450002, China
| | - Guoqin Liu
- National Key Laboratory of Wheat and Maize Crop Science, College of Agronomy, Henan Agricultural University, Zhengzhou 450002, China
- The Shennong Laboratory, Zhengzhou 450002, China
| | - Zhongjun Fu
- Chongqing Academy of Agricultural Sciences, Chongqing 401329, China
| | - Jihua Tang
- National Key Laboratory of Wheat and Maize Crop Science, College of Agronomy, Henan Agricultural University, Zhengzhou 450002, China
- The Shennong Laboratory, Zhengzhou 450002, China
| | - Wen-Xue Li
- National Engineering Laboratory for Crop Molecular Breeding, Institute of Crop Sciences, Chinese Academy of Agricultural Sciences, Beijing 100081, China
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10
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Wu X, Zhou X, Wang S, Wang Z, Huang P, Pu W, Peng Y, Fan X, Gao J, Li Z. Overexpression of a nitrate transporter NtNPF2.11 increases nitrogen accumulation and yield in tobacco. Gene 2023; 885:147715. [PMID: 37591325 DOI: 10.1016/j.gene.2023.147715] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/13/2023] [Revised: 07/30/2023] [Accepted: 08/14/2023] [Indexed: 08/19/2023]
Abstract
Nitrogen (N) is the key essential macronutrient for crop growth and yield. Over-application of inorganic N fertilizer in fields generated serious environmental pollution and had a negative impact to human health. Therefore, improving crop N use efficiency (NUE) is helpful for sustainable agriculture. The biological functions of nitrogen transporters and regulators have been intensively studied in many crop species. However, only a few nitrogen transporters have been identified in tobacco to date. We reported the identification and functional characterization of a nitrate transporter NtNPF2.11 from tobacco (Nicotiana tabacum). qRT-PCR assay revealed that NtNPF2.11 was mainly expressed in leaf and vein. Under middle N (MN, 1.57 kg N/100 m2) and high N (HN, 2.02 kg N/100 m2) conditions, overexpression of NtNPF2.11 in tobacco greatly improved N utilization and biomass. Moreover, under middle N and high N conditions, the expression of genes for nitrate assimilation, such as NtNR1, NtNiR, NtGS and NtGOGAT, were upregulated in NtNPF2.11 overexpression plants. Compared with WT, overexpression of NtNPF2.11 increased potassium (K) accumulation under high N conditions. These results indicated that overexpression of NtNPF2.11 could increase tobacco yield, N and K accumulation under higher N conditions. Overall, these findings improve our understanding the function of NtNPF2.11 and provide useful gene for sustainable agriculture.
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Affiliation(s)
- Xiaoqiu Wu
- Puai Medical College, Shaoyang University, Shaoyang 422000, China
| | - Xiaojie Zhou
- College of Food and Chemical Engineering, Shaoyang University, Shaoyang 422000, China
| | - Shuaibin Wang
- Tobacco Research Institute of Technology Centre, China Tobacco Hunan Industrial Corporation, Changsha 410007, China
| | - Zhangying Wang
- State Key Laboratory of Hybrid Rice, College of Life Sciences, Wuhan University, Wuhan 430072, China
| | - Pingjun Huang
- Tobacco Research Institute of Technology Centre, China Tobacco Hunan Industrial Corporation, Changsha 410007, China
| | - Wenxuan Pu
- Tobacco Research Institute of Technology Centre, China Tobacco Hunan Industrial Corporation, Changsha 410007, China
| | - Yu Peng
- Tobacco Research Institute of Technology Centre, China Tobacco Hunan Industrial Corporation, Changsha 410007, China
| | - Xiaorong Fan
- State Key Laboratory of Crop Genetics and Germplasm Enhancement, MOA Key Laboratory of Plant Nutrition and Fertilization in Low-Middle Reaches of the Yangtze River, Nanjing Agricultural University, Nanjing 210095, China
| | - Junping Gao
- Tobacco Research Institute of Technology Centre, China Tobacco Hunan Industrial Corporation, Changsha 410007, China.
| | - Zhaowu Li
- Puai Medical College, Shaoyang University, Shaoyang 422000, China.
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11
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Feng J, Zhu C, Cao J, Liu C, Zhang J, Cao F, Zhou X. Genome-wide identification and expression analysis of the NRT genes in Ginkgo biloba under nitrate treatment reveal the potential roles during calluses browning. BMC Genomics 2023; 24:633. [PMID: 37872493 PMCID: PMC10594704 DOI: 10.1186/s12864-023-09732-4] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/15/2023] [Accepted: 10/11/2023] [Indexed: 10/25/2023] Open
Abstract
Nitrate is a primary nitrogen source for plant growth, and previous studies have indicated a correlation between nitrogen and browning. Nitrate transporters (NRTs) are crucial in nitrate allocation. Here, we utilized a genome-wide approach to identify and analyze the expression pattern of 74 potential GbNRTs under nitrate treatments during calluses browning in Ginkgo, including 68 NITRATE TRANSPORTER 1 (NRT1)/PEPTIDE TRANSPORTER (PTR) (NPF), 4 NRT2 and 2 NRT3. Conserved domains, motifs, phylogeny, and cis-acting elements (CREs) were analyzed to demonstrate the evolutionary conservation and functional diversity of GbNRTs. Our analysis showed that the NPF family was divided into eight branches, with the GbNPF2 and GbNPF6 subfamilies split into three groups. Each GbNRT contained 108-214 CREs of 19-36 types, especially with binding sites of auxin and transcription factors v-myb avian myeloblastosis viral oncogene homolog (MYB) and basic helix-loop-helix (bHLH). The E1X1X2E2R motif had significant variations in GbNPFs, indicating changes in the potential dynamic proton transporting ability. The expression profiles of GbNRTs indicated that they may function in regulating nitrate uptake and modulating the signaling of auxin and polyphenols biosynthesis, thereby affecting browning in Ginkgo callus induction. These findings provide a better understanding of the role of NRTs during NO3- uptake and utilization in vitro culture, which is crucial to prevent browning and develop an efficient regeneration and suspension production system in Ginkgo.
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Affiliation(s)
- Jin Feng
- State Key Laboratory of Subtropical Silviculture, Zhejiang A&F University, Lin'an, Hangzhou, 311300, Zhejiang, China
| | - Can Zhu
- State Key Laboratory of Subtropical Silviculture, Zhejiang A&F University, Lin'an, Hangzhou, 311300, Zhejiang, China
| | - Jiaqi Cao
- State Key Laboratory of Subtropical Silviculture, Zhejiang A&F University, Lin'an, Hangzhou, 311300, Zhejiang, China
| | - Chen Liu
- State Key Laboratory of Subtropical Silviculture, Zhejiang A&F University, Lin'an, Hangzhou, 311300, Zhejiang, China
| | - Jiaqi Zhang
- State Key Laboratory of Subtropical Silviculture, Zhejiang A&F University, Lin'an, Hangzhou, 311300, Zhejiang, China
| | - Fuliang Cao
- State Key Laboratory of Subtropical Silviculture, Zhejiang A&F University, Lin'an, Hangzhou, 311300, Zhejiang, China
- Co-Innovation Center for Sustainable Forestry in Southern China, College of Forestry, Nanjing Forestry University, Nanjing, 210037, China
| | - Xiaohong Zhou
- State Key Laboratory of Subtropical Silviculture, Zhejiang A&F University, Lin'an, Hangzhou, 311300, Zhejiang, China.
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12
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Garcia-Gomez P, Olmos-Ruiz R, Nicolas-Espinosa J, Carvajal M. Effects of low nitrogen supply on biochemical and physiological parameters related to nitrate and water, involving nitrate transporters and aquaporins in Citrus macrophylla. Plant Biol (Stuttg) 2023; 25:944-955. [PMID: 37357019 DOI: 10.1111/plb.13553] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/19/2023] [Accepted: 06/08/2023] [Indexed: 06/27/2023]
Abstract
A reduction in chemical N-based fertillizer was investigated in Citrus plants. As N and water uptake are connected, the relationship between the physiological response to reductions in N was studied in relation to N metabolism and water. We examined the response of new and mature leaves and roots of Citrus macrophylla, grown under controlled conditions, and given different concentrations of N: 16, 8 or 4 mM. Differences in growth and development were determined for biochemical (mineral content, photosynthetic pigments, proteins and nitrate and nitrite reductase activity), physiological (photosynthesis and transpiration), and molecular (relative expression of nitrate transporters and aquaporins) parameters. Only plants given 4 mM N showed a reduction in growth. Although there were changes in NR activity, protein synthesis, and chlorophyll content in both 8 and 4 mM N plants that were highly related to aquaporin and nitrate transporter expression. The results revealed new findings on the relationship between aquaporins and nitrate transporters in new leaves of Citrus, suggesting a mechanism for ensuring growth under low N when new tissues are being formed.
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Affiliation(s)
- P Garcia-Gomez
- Aquaporins Group, Plant Nutrition Department, Centro de Edafología y Biología Aplicada del Segura (CEBAS-CSIC), Campus Universitario de Espinardo, Murcia, Spain
| | - R Olmos-Ruiz
- Aquaporins Group, Plant Nutrition Department, Centro de Edafología y Biología Aplicada del Segura (CEBAS-CSIC), Campus Universitario de Espinardo, Murcia, Spain
| | - J Nicolas-Espinosa
- Aquaporins Group, Plant Nutrition Department, Centro de Edafología y Biología Aplicada del Segura (CEBAS-CSIC), Campus Universitario de Espinardo, Murcia, Spain
| | - M Carvajal
- Aquaporins Group, Plant Nutrition Department, Centro de Edafología y Biología Aplicada del Segura (CEBAS-CSIC), Campus Universitario de Espinardo, Murcia, Spain
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13
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Pereyra ME, Costigliolo Rojas C, Jarrell AF, Hovland AS, Snipes SA, Nagpal P, Alabadí D, Blázquez MA, Gutiérrez RA, Reed JW, Gray WM, Casal JJ. PIF4 enhances the expression of SAUR genes to promote growth in response to nitrate. Proc Natl Acad Sci U S A 2023; 120:e2304513120. [PMID: 37725643 PMCID: PMC10523462 DOI: 10.1073/pnas.2304513120] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/18/2023] [Accepted: 08/09/2023] [Indexed: 09/21/2023] Open
Abstract
Nitrate supply is fundamental to support shoot growth and crop performance, but the associated increase in stem height exacerbates the risks of lodging and yield losses. Despite their significance for agriculture, the mechanisms involved in the promotion of stem growth by nitrate remain poorly understood. Here, we show that the elongation of the hypocotyl of Arabidopsis thaliana, used as a model, responds rapidly and persistently to upshifts in nitrate concentration, rather than to the nitrate level itself. The response occurred even in shoots dissected from their roots and required NITRATE TRANSPORTER 1.1 (NRT1.1) in the phosphorylated state (but not NRT1.1 nitrate transport capacity) and NIN-LIKE PROTEIN 7 (NLP7). Nitrate increased PHYTOCHROME INTERACTING FACTOR 4 (PIF4) nuclear abundance by posttranscriptional mechanisms that depended on NRT1.1 and phytochrome B. In response to nitrate, PIF4 enhanced the expression of numerous SMALL AUXIN-UP RNA (SAUR) genes in the hypocotyl. The growth response to nitrate required PIF4, positive and negative regulators of its activity, including AUXIN RESPONSE FACTORs, and SAURs. PIF4 integrates cues from the soil (nitrate) and aerial (shade) environments adjusting plant stature to facilitate access to light.
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Affiliation(s)
- Matías Ezequiel Pereyra
- Instituto de Investigaciones Fisiológicas y Ecológicas Vinculadas a la Agricultura, Facultad de Agronomía, Universidad de Buenos Aires, Consejo Nacional de Investigaciones Científicas y Técnicas, Buenos Aires1417, Argentina
- Fundaciόn Instituto Leloir, Instituto de Investigaciones Bioquímicas de Buenos Aires, Consejo Nacional de Investigaciones Científicas y Técnicas, Buenos Aires1405, Argentina
| | - Cecilia Costigliolo Rojas
- Fundaciόn Instituto Leloir, Instituto de Investigaciones Bioquímicas de Buenos Aires, Consejo Nacional de Investigaciones Científicas y Técnicas, Buenos Aires1405, Argentina
| | - Anne F. Jarrell
- Department of Biology, University of North Carolina, Chapel Hill, NC27599-3280
| | - Austin S. Hovland
- Department of Plant and Microbial Biology, University of Minnesota, St. Paul, MN55108
| | - Stephen A. Snipes
- Department of Biology, University of North Carolina, Chapel Hill, NC27599-3280
| | - Punita Nagpal
- Department of Biology, University of North Carolina, Chapel Hill, NC27599-3280
| | - David Alabadí
- Instituto de Biologίa Molecular y Celular de Plantas, Consejo Superior de Investigaciones Científicas, Universidad Politécnica de Valencia, Valencia46022, Spain
| | - Miguel A. Blázquez
- Instituto de Biologίa Molecular y Celular de Plantas, Consejo Superior de Investigaciones Científicas, Universidad Politécnica de Valencia, Valencia46022, Spain
| | - Rodrigo A. Gutiérrez
- Departamento de Genética Molecular y Microbiología, Facultad de Ciencias Biológicas, Pontificia Universidad Católica de Chile, Santiago8331150, Chile
| | - Jason W. Reed
- Department of Biology, University of North Carolina, Chapel Hill, NC27599-3280
| | - William M. Gray
- Department of Plant and Microbial Biology, University of Minnesota, St. Paul, MN55108
| | - Jorge José Casal
- Instituto de Investigaciones Fisiológicas y Ecológicas Vinculadas a la Agricultura, Facultad de Agronomía, Universidad de Buenos Aires, Consejo Nacional de Investigaciones Científicas y Técnicas, Buenos Aires1417, Argentina
- Fundaciόn Instituto Leloir, Instituto de Investigaciones Bioquímicas de Buenos Aires, Consejo Nacional de Investigaciones Científicas y Técnicas, Buenos Aires1405, Argentina
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14
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Zanin L, Tomasi N, Casagrande D, Danuso F, Buoso S, Zamboni A, Varanini Z, Pinton R, Blanchini F. A mechanistic mathematical model for describing and predicting the dynamics of high-affinity nitrate intake into roots of maize and other plant species. Physiol Plant 2023; 175:e14021. [PMID: 37882311 DOI: 10.1111/ppl.14021] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/21/2023] [Revised: 08/23/2023] [Accepted: 08/29/2023] [Indexed: 10/27/2023]
Abstract
A fully mechanistic dynamical model for plant nitrate uptake is presented. Based on physiological and regulatory pathways and based on physical laws, we form a dynamic system mathematically described by seven differential equations. The model evidences the presence of a short-term positive feedback on the high-affinity nitrate uptake, triggered by the presence of nitrate around the roots, which induces its intaking. In the long run, this positive feedback is overridden by two long-term negative feedback loops which drastically reduces the nitrate uptake capacity. These two negative feedbacks are due to the generation of ammonium and amino acids, respectively, and inhibit the synthesis and the activity of high-affinity nitrate transporters. This model faithfully predicts the typical spiking behavior of the nitrate uptake, in which an initial strong increase of nitrate absorption capacity is followed by a drop, which regulates the absorption down to the initial value. The model outcome was compared with experimental data and they fit quite nicely. The model predicts that after the initial exposure of the roots with nitrate, the absorption of the anion strongly increases and that, on the contrary, the intensity of the absorption is limited in presence of ammonium around the roots.
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Affiliation(s)
- Laura Zanin
- Department of Agricultural, Food, Environmental and Animal Sciences, University of Udine, Udine, Italy
| | - Nicola Tomasi
- Department of Agricultural, Food, Environmental and Animal Sciences, University of Udine, Udine, Italy
| | - Daniele Casagrande
- Dipartimento Politecnico di Ingegneria e Architettura, University of Udine, Udine, Italy
| | - Francesco Danuso
- Department of Agricultural, Food, Environmental and Animal Sciences, University of Udine, Udine, Italy
| | - Sara Buoso
- Department of Agricultural, Food, Environmental and Animal Sciences, University of Udine, Udine, Italy
| | - Anita Zamboni
- Department of Biotechnology, University of Verona, Verona, Italy
| | - Zeno Varanini
- Department of Biotechnology, University of Verona, Verona, Italy
| | - Roberto Pinton
- Department of Agricultural, Food, Environmental and Animal Sciences, University of Udine, Udine, Italy
| | - Franco Blanchini
- Dipartimento di Matematica, Informatica e Fisica, University of Udine, Udine, Italy
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15
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Lv B, Li Y, Wu X, Zhu C, Cao Y, Duan Q, Huang J. Brassica rapa Nitrate Transporter 2 ( BrNRT2) Family Genes, Identification, and Their Potential Functions in Abiotic Stress Tolerance. Genes (Basel) 2023; 14:1564. [PMID: 37628616 PMCID: PMC10454591 DOI: 10.3390/genes14081564] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/19/2023] [Revised: 07/23/2023] [Accepted: 07/28/2023] [Indexed: 08/27/2023] Open
Abstract
Nitrate transporter 2 (NRT2) proteins play vital roles in both nitrate (NO3-) uptake and translocation as well as abiotic stress responses in plants. However, little is known about the NRT2 gene family in Brassica rapa. In this study, 14 NRT2s were identified in the B. rapa genome. The BrNRT2 family members contain the PLN00028 and MATE_like superfamily domains. Cis-element analysis indicated that regulatory elements related to stress responses are abundant in the promoter sequences of BrNRT2 genes. BrNRT2.3 expression was increased after drought stress, and BrNRT2.1 and BrNRT2.8 expression were significantly upregulated after salt stress. Furthermore, protein interaction predictions suggested that homologs of BrNRT2.3, BrNRT2.1, and BrNRT2.8 in Arabidopsis thaliana may interact with the known stress-regulating proteins AtNRT1.1, AtNRT1.5, and AtNRT1.8. In conclusion, we suggest that BrNRT2.1, BrNRT2.3, and BrNRT2.8 have the greatest potential for inducing abiotic stress tolerance. Our findings will aid future studies of the biological functions of BrNRT2 family genes.
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Affiliation(s)
| | | | | | | | | | | | - Jiabao Huang
- College of Horticulture Science and Engineering, Shandong Agricultural University, Tai’an 271000, China
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16
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Zhao S, Guo Z, Zhu L, Fan J, Yang B, Chai W, Sun H, Feng F, Liang Y, Zou C, Jiang X, Zhao W, Lü J, Zhang C. [Identification, expression and DNA variation analysis of high affinity nitrate transporter NRT2/ 3 gene family in Sorghum bicolor]. Sheng Wu Gong Cheng Xue Bao 2023; 39:2743-2761. [PMID: 37584129 DOI: 10.13345/j.cjb.220800] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 08/17/2023]
Abstract
Nitrate is the main form of inorganic nitrogen that crop absorbs, and nitrate transporter 2 (NRT2) is a high affinity transporter using nitrate as a specific substrate. When the available nitrate is limited, the high affinity transport systems are activated and play an important role in the process of nitrate absorption and transport. Most NRT2 cannot transport nitrates alone and require the assistance of a helper protein belonging to nitrate assimilation related family (NAR2) to complete the absorption or transport of nitrates. Crop nitrogen utilization efficiency is affected by environmental conditions, and there are differences between varieties, so it is of great significance to develop varieties with high nitrogen utilization efficiency. Sorghum bicolor has high stress tolerance and is more efficient in soil nitrogen uptake and utilization. The S. bicolor genome database was scanned to systematically analyze the gene structure, chromosomal localization, physicochemical properties, secondary structure and transmembrane domain, signal peptide and subcellular localization, promoter region cis-acting elements, phylogenetic evolution, single nucleotide polymorphism (SNP) recognition and annotation, and selection pressure of the gene family members. Through bioinformatics analysis, 5 NRT2 gene members (designated as SbNRT2-1a, SbNRT2-1b, SbNRT2-2, SbNRT2-3, and SbNRT2-4) and 2 NAR2 gene members (designated as SbNRT3-1 and SbNRT3-2) were identified, the number of which was less than that of foxtail millet. SbNRT2/3 were distributed on 3 chromosomes, and could be divided into four subfamilies. The genetic structure of the same subfamilies was highly similar. The average value of SbNRT2/3 hydrophilicity was positive, indicating that they were all hydrophobic proteins, whereas α-helix and random coil accounted for more than 70% of the total secondary structure. Subcellular localization occurred on plasma membrane, where SbNRT2 proteins did not contain signal peptides, but SbNRT3 proteins contained signal peptides. Further analysis revealed that the number of transmembrane domains of the SbNRT2s family members was greater than 10, while that of the SbNRT3s were 2. There was a close collinearity between NRT2/3s of S. bicolor and Zea mays. Protein domains analysis showed the presence of MFS_1 and NAR2 protein domains, which supported executing high affinity nitrate transport. Phylogenetic tree analysis showed that SbNRT2/3 were more closely related to those of Z. mays and Setaria italic. Analysis of gene promoter cis-acting elements indicated that the promoter region of SbNRT2/3 had several plant hormones and stress response elements, which might respond to growth and environmental cues. Gene expression heat map showed that SbNRT2-3 and SbNRT3-1 were induced by nitrate in the root and stem, respectively, and SbNRT2-4 and SbNRT2-3 were induced by low nitrogen in the root and stem. Non-synonymous SNP variants were found in SbNRT2-4 and SbNRT2-1a. Selection pressure analysis showed that the SbNRT2/3 were subject to purification and selection during evolution. The expression of SbNRT2/3 gene and the effect of aphid infection were consistent with the expression analysis results of genes in different tissues, and SbNRT2-1b and SbNRT3-1 were significantly expressed in the roots of aphid lines 5-27sug, and the expression levels of SbNRT2-3, SbNRT2-4 and SbNRT3-2 were significantly reduced in sorghum aphid infested leaves. Overall, genome-wide identification, expression and DNA variation analysis of NRT2/3 gene family of Sorghum bicolor provided a basis for elucidating the high efficiency of sorghum in nitrogen utilization.
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Affiliation(s)
- Shanshan Zhao
- Ministry of Education and Shanxi Province Co-Funded Collaboration and Innovation Centre for Speciality Crops, College of Agronomy, Shanxi Agricultural University, Taigu 030801, Shanxi, China
| | - Zhiqiang Guo
- Ministry of Education and Shanxi Province Co-Funded Collaboration and Innovation Centre for Speciality Crops, College of Agronomy, Shanxi Agricultural University, Taigu 030801, Shanxi, China
| | - Lixun Zhu
- Ministry of Education and Shanxi Province Co-Funded Collaboration and Innovation Centre for Speciality Crops, College of Agronomy, Shanxi Agricultural University, Taigu 030801, Shanxi, China
| | - Jiali Fan
- Ministry of Education and Shanxi Province Co-Funded Collaboration and Innovation Centre for Speciality Crops, College of Agronomy, Shanxi Agricultural University, Taigu 030801, Shanxi, China
| | - Bohui Yang
- Ministry of Education and Shanxi Province Co-Funded Collaboration and Innovation Centre for Speciality Crops, College of Agronomy, Shanxi Agricultural University, Taigu 030801, Shanxi, China
| | - Wenting Chai
- Ministry of Education and Shanxi Province Co-Funded Collaboration and Innovation Centre for Speciality Crops, College of Agronomy, Shanxi Agricultural University, Taigu 030801, Shanxi, China
| | - Huiqiong Sun
- Ministry of Education and Shanxi Province Co-Funded Collaboration and Innovation Centre for Speciality Crops, College of Agronomy, Shanxi Agricultural University, Taigu 030801, Shanxi, China
| | - Fan Feng
- Ministry of Education and Shanxi Province Co-Funded Collaboration and Innovation Centre for Speciality Crops, College of Agronomy, Shanxi Agricultural University, Taigu 030801, Shanxi, China
| | - Yuexiu Liang
- Ministry of Education and Shanxi Province Co-Funded Collaboration and Innovation Centre for Speciality Crops, College of Agronomy, Shanxi Agricultural University, Taigu 030801, Shanxi, China
| | - Chunlei Zou
- Ministry of Education and Shanxi Province Co-Funded Collaboration and Innovation Centre for Speciality Crops, College of Agronomy, Shanxi Agricultural University, Taigu 030801, Shanxi, China
| | - Xiaodong Jiang
- Ministry of Education and Shanxi Province Co-Funded Collaboration and Innovation Centre for Speciality Crops, College of Agronomy, Shanxi Agricultural University, Taigu 030801, Shanxi, China
| | - Weijun Zhao
- Sorghum Research Institute, Shanxi Agricultural University, Yuci 030600, Shanxi, China
| | - Jinhui Lü
- College of Forestry, Shanxi Agricultural University, Taigu 030801, Shanxi, China
| | - Chunlai Zhang
- Ministry of Education and Shanxi Province Co-Funded Collaboration and Innovation Centre for Speciality Crops, College of Agronomy, Shanxi Agricultural University, Taigu 030801, Shanxi, China
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17
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Binenbaum J, Wulff N, Camut L, Kiradjiev K, Anfang M, Tal I, Vasuki H, Zhang Y, Sakvarelidze-Achard L, Davière JM, Ripper D, Carrera E, Manasherova E, Ben Yaakov S, Lazary S, Hua C, Novak V, Crocoll C, Weinstain R, Cohen H, Ragni L, Aharoni A, Band LR, Achard P, Nour-Eldin HH, Shani E. Gibberellin and abscisic acid transporters facilitate endodermal suberin formation in Arabidopsis. Nat Plants 2023; 9:785-802. [PMID: 37024660 PMCID: PMC7615257 DOI: 10.1038/s41477-023-01391-3] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/18/2022] [Accepted: 03/09/2023] [Indexed: 05/04/2023]
Abstract
The plant hormone gibberellin (GA) regulates multiple developmental processes. It accumulates in the root elongating endodermis, but how it moves into this cell file and the significance of this accumulation are unclear. Here we identify three NITRATE TRANSPORTER1/PEPTIDE TRANSPORTER (NPF) transporters required for GA and abscisic acid (ABA) translocation. We demonstrate that NPF2.14 is a subcellular GA/ABA transporter, presumably the first to be identified in plants, facilitating GA and ABA accumulation in the root endodermis to regulate suberization. Further, NPF2.12 and NPF2.13, closely related proteins, are plasma membrane-localized GA and ABA importers that facilitate shoot-to-root GA12 translocation, regulating endodermal hormone accumulation. This work reveals that GA is required for root suberization and that GA and ABA can act non-antagonistically. We demonstrate how the clade of transporters mediates hormone flow with cell-file-specific vacuolar storage at the phloem unloading zone, and slow release of hormone to induce suberin formation in the maturation zone.
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Affiliation(s)
- Jenia Binenbaum
- School of Plant Sciences and Food Security, Tel Aviv University, Tel Aviv, Israel
| | - Nikolai Wulff
- DynaMo Center of Excellence, Department of Plant and Environmental Sciences, University of Copenhagen, Frederiksberg, Denmark
| | - Lucie Camut
- Institut de Biologie Moléculaire des Plantes, CNRS, Université de Strasbourg, Strasbourg, France
| | - Kristian Kiradjiev
- Centre for Mathematical Medicine and Biology, School of Mathematical Sciences, University of Nottingham, Nottingham, UK
- Division of Plant and Crop Sciences, School of Biosciences, University of Nottingham, Sutton Bonington Campus, Loughborough, UK
| | - Moran Anfang
- School of Plant Sciences and Food Security, Tel Aviv University, Tel Aviv, Israel
| | - Iris Tal
- School of Plant Sciences and Food Security, Tel Aviv University, Tel Aviv, Israel
| | - Himabindu Vasuki
- School of Plant Sciences and Food Security, Tel Aviv University, Tel Aviv, Israel
- Department of Plant and Environmental Sciences, Weizmann Institute of Science, Rehovot, Israel
| | - Yuqin Zhang
- School of Plant Sciences and Food Security, Tel Aviv University, Tel Aviv, Israel
| | - Lali Sakvarelidze-Achard
- Institut de Biologie Moléculaire des Plantes, CNRS, Université de Strasbourg, Strasbourg, France
| | - Jean-Michel Davière
- Institut de Biologie Moléculaire des Plantes, CNRS, Université de Strasbourg, Strasbourg, France
| | - Dagmar Ripper
- ZMBP-Center for Plant Molecular Biology, University of Tübingen, Tübingen, Germany
| | - Esther Carrera
- Instituto de Biología Molecular y Celular de Plantas, CSIC-UPV, Valencia, Spain
| | - Ekaterina Manasherova
- Department of Vegetable and Field Crops, Institute of Plant Sciences, Agricultural Research Organization (ARO), Volcani Center, Rishon Lezion, Israel
| | - Shir Ben Yaakov
- School of Plant Sciences and Food Security, Tel Aviv University, Tel Aviv, Israel
| | - Shani Lazary
- School of Plant Sciences and Food Security, Tel Aviv University, Tel Aviv, Israel
| | - Chengyao Hua
- DynaMo Center of Excellence, Department of Plant and Environmental Sciences, University of Copenhagen, Frederiksberg, Denmark
| | - Vlastimil Novak
- Plant Nutrients and Food Quality Research Group, Department of Plant and Environmental Sciences, University of Copenhagen, Frederiksberg, Denmark
| | - Christoph Crocoll
- DynaMo Center of Excellence, Department of Plant and Environmental Sciences, University of Copenhagen, Frederiksberg, Denmark
| | - Roy Weinstain
- School of Plant Sciences and Food Security, Tel Aviv University, Tel Aviv, Israel
| | - Hagai Cohen
- Department of Vegetable and Field Crops, Institute of Plant Sciences, Agricultural Research Organization (ARO), Volcani Center, Rishon Lezion, Israel
| | - Laura Ragni
- ZMBP-Center for Plant Molecular Biology, University of Tübingen, Tübingen, Germany
| | - Asaph Aharoni
- Department of Plant and Environmental Sciences, Weizmann Institute of Science, Rehovot, Israel
| | - Leah R Band
- Centre for Mathematical Medicine and Biology, School of Mathematical Sciences, University of Nottingham, Nottingham, UK.
- Division of Plant and Crop Sciences, School of Biosciences, University of Nottingham, Sutton Bonington Campus, Loughborough, UK.
| | - Patrick Achard
- Institut de Biologie Moléculaire des Plantes, CNRS, Université de Strasbourg, Strasbourg, France.
| | - Hussam Hassan Nour-Eldin
- DynaMo Center of Excellence, Department of Plant and Environmental Sciences, University of Copenhagen, Frederiksberg, Denmark.
| | - Eilon Shani
- School of Plant Sciences and Food Security, Tel Aviv University, Tel Aviv, Israel.
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18
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Zhang X, Feng J, Zhao R, Cheng H, Ashraf J, Wang Q, Lv L, Zhang Y, Song G, Zuo D. Functional characterization of the GhNRT2.1e gene reveals its significant role in improving nitrogen use efficiency in Gossypium hirsutum. PeerJ 2023; 11:e15152. [PMID: 37009157 PMCID: PMC10064996 DOI: 10.7717/peerj.15152] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/07/2022] [Accepted: 03/10/2023] [Indexed: 03/30/2023] Open
Abstract
Background
Nitrate is the primary type of nitrogen available to plants, which is absorbed and transported by nitrate transporter 2 (NRT2) at low nitrate conditions.
Methods
Genome-wide identification of NRT2 genes in G. hirsutum was performed. Gene expression patterns were revealed using RNA-seq and qRT-PCR. Gene functions were characterized using overexpression in A. thaliana and silencing in G. hirsutum. Protein interactions were verified by yeast two-hybrid and luciferase complementation imaging (LCI) assays.
Results
We identified 14, 14, seven, and seven NRT2 proteins in G. hirsutum, G. barbadense, G. raimondii, and G. arboreum. Most NRT2 proteins were predicted in the plasma membrane. The NRT2 genes were classified into four distinct groups through evolutionary relationships, with members of the same group similar in conserved motifs and gene structure. The promoter regions of NRT2 genes included many elements related to growth regulation, phytohormones, and abiotic stresses. Tissue expression pattern results revealed that most GhNRT2 genes were specifically expressed in roots. Under low nitrate conditions, GhNRT2 genes exhibited different expression levels, with GhNRT2.1e being the most up-regulated. Arabidopsis plants overexpressing GhNRT2.1e exhibited increased biomass, nitrogen and nitrate accumulation, nitrogen uptake and utilization efficiency, nitrogen-metabolizing enzyme activity, and amino acid content under low nitrate conditions. In addition, GhNRT2.1e-silenced plants exhibited suppressed nitrate uptake and accumulation, hampered plant growth, affected nitrogen metabolism processes, and reduced tolerance to low nitrate. The results showed that GhNRT2.1e could promote nitrate uptake and transport under low nitrate conditions, thus effectively increasing nitrogen use efficiency (NUE). We found that GhNRT2.1e interacts with GhNAR2.1 by yeast two-hybrid and LCI assays.
Discussion
Our research lays the foundation to increase NUE and cultivate new cotton varieties with efficient nitrogen use.
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Affiliation(s)
- Xinmiao Zhang
- State Key Laboratory of Cotton Biology, Institute of Cotton Research, Chinese Academy of Agricultural Sciences, Anyang, Henan, China
| | - Jiajia Feng
- State Key Laboratory of Cotton Biology, Institute of Cotton Research, Chinese Academy of Agricultural Sciences, Anyang, Henan, China
| | - Ruolin Zhao
- State Key Laboratory of Cotton Biology, Institute of Cotton Research, Chinese Academy of Agricultural Sciences, Anyang, Henan, China
| | - Hailiang Cheng
- State Key Laboratory of Cotton Biology, Institute of Cotton Research, Chinese Academy of Agricultural Sciences, Anyang, Henan, China
| | - Javaria Ashraf
- Department of Plant Breeding and Genetics, Faculty of Agriculture and Environment, The Islamia University of Bahawalpur, Bahawalpur, Punjab, Pakistan
| | - Qiaolian Wang
- State Key Laboratory of Cotton Biology, Institute of Cotton Research, Chinese Academy of Agricultural Sciences, Anyang, Henan, China
| | - Limin Lv
- State Key Laboratory of Cotton Biology, Institute of Cotton Research, Chinese Academy of Agricultural Sciences, Anyang, Henan, China
| | - Youping Zhang
- State Key Laboratory of Cotton Biology, Institute of Cotton Research, Chinese Academy of Agricultural Sciences, Anyang, Henan, China
| | - Guoli Song
- State Key Laboratory of Cotton Biology, Institute of Cotton Research, Chinese Academy of Agricultural Sciences, Anyang, Henan, China
| | - Dongyun Zuo
- State Key Laboratory of Cotton Biology, Institute of Cotton Research, Chinese Academy of Agricultural Sciences, Anyang, Henan, China
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19
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Hodin J, Lind C, Marmagne A, Espagne C, Bianchi MW, De Angeli A, Abou-Choucha F, Bourge M, Chardon F, Thomine S, Filleur S. Proton exchange by the vacuolar nitrate transporter CLCa is required for plant growth and nitrogen use efficiency. Plant Cell 2023; 35:318-335. [PMID: 36409008 PMCID: PMC9806559 DOI: 10.1093/plcell/koac325] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/21/2022] [Accepted: 11/03/2022] [Indexed: 06/16/2023]
Abstract
Nitrate is a major nutrient and osmoticum for plants. To deal with fluctuating nitrate availability in soils, plants store this nutrient in their vacuoles. Chloride channel a (CLCa), a 2NO3-/1H+ exchanger localized to the vacuole in Arabidopsis (Arabidopsis thaliana), ensures this storage process. CLCa belongs to the CLC family, which includes anion/proton exchangers and anion channels. A mutation in a glutamate residue conserved across CLC exchangers is likely responsible for the conversion of exchangers to channels. Here, we show that CLCa with a mutation in glutamate 203 (E203) behaves as an anion channel in its native membrane. We introduced the CLCaE203A point mutation to investigate its physiological importance into the Arabidopsis clca knockout mutant. These CLCaE203A mutants displayed a growth deficit linked to the disruption of water homeostasis. Additionally, CLCaE203A expression failed to complement the defect in nitrate accumulation of clca and favored higher N-assimilation at the vegetative stage. Further analyses at the post-flowering stages indicated that CLCaE203A expression results in an increase in N uptake allocation to seeds, leading to a higher nitrogen use efficiency compared to the wild-type. Altogether, these results point to the critical function of the CLCa exchanger on the vacuole for plant metabolism and development.
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Affiliation(s)
- Julie Hodin
- Institute for Integrative Biology of the Cell (I2BC), Université Paris-Saclay, CEA, CNRS, 91198 Gif-sur-Yvette, France
- UFR Sciences du Vivant, Université Paris Cité, F-75205 Paris Cedex 13, France
| | - Christof Lind
- Institute for Integrative Biology of the Cell (I2BC), Université Paris-Saclay, CEA, CNRS, 91198 Gif-sur-Yvette, France
| | - Anne Marmagne
- AgroParisTech, Institut Jean-Pierre Bourgin (IJPB), Université Paris-Saclay, INRAE, 78000 Versailles, France
| | - Christelle Espagne
- Institute for Integrative Biology of the Cell (I2BC), Université Paris-Saclay, CEA, CNRS, 91198 Gif-sur-Yvette, France
| | - Michele Wolfe Bianchi
- Institute for Integrative Biology of the Cell (I2BC), Université Paris-Saclay, CEA, CNRS, 91198 Gif-sur-Yvette, France
- Université Paris-Est-Créteil-Val-de-Marne, 94010 Creteil Cedex, France
| | - Alexis De Angeli
- Institute for Integrative Biology of the Cell (I2BC), Université Paris-Saclay, CEA, CNRS, 91198 Gif-sur-Yvette, France
| | - Fadi Abou-Choucha
- Institute for Integrative Biology of the Cell (I2BC), Université Paris-Saclay, CEA, CNRS, 91198 Gif-sur-Yvette, France
| | - Mickaël Bourge
- Institute for Integrative Biology of the Cell (I2BC), Université Paris-Saclay, CEA, CNRS, 91198 Gif-sur-Yvette, France
| | - Fabien Chardon
- AgroParisTech, Institut Jean-Pierre Bourgin (IJPB), Université Paris-Saclay, INRAE, 78000 Versailles, France
| | - Sebastien Thomine
- Institute for Integrative Biology of the Cell (I2BC), Université Paris-Saclay, CEA, CNRS, 91198 Gif-sur-Yvette, France
| | - Sophie Filleur
- Institute for Integrative Biology of the Cell (I2BC), Université Paris-Saclay, CEA, CNRS, 91198 Gif-sur-Yvette, France
- UFR Sciences du Vivant, Université Paris Cité, F-75205 Paris Cedex 13, France
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20
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Zou L, Qi D, Li S, Zhai M, Li Z, Guo X, Ruan M, Yu X, Zhao P, Li W, Zhang P, Ma Q, Peng M, Liao W. The cassava (Manihot-esculenta Crantz)'s nitrate transporter NPF4.5, expressed in seedling roots, involved in nitrate flux and osmotic stress. Plant Physiol Biochem 2023; 194:122-133. [PMID: 36399913 DOI: 10.1016/j.plaphy.2022.10.025] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/25/2022] [Revised: 10/12/2022] [Accepted: 10/26/2022] [Indexed: 06/16/2023]
Abstract
AtNPF4.5/AIT2, which was predicted to be a low-affinity transporter capable for nitrate uptake, was screened by ABA receptor complex in Arabidopsis ten years ago. However, the molecular and biochemical characterizations of AtNPF4.5 in plants remained largely unclear. In this study, the function of a plasma-membrane-localized and root-specifically-expressed gene MeNPF4.5 (Manihot-esculenta NITRATE TRANSPORTER 1 PTR FAMILY4.5), an ortholog of the Arabidopsis thaliana NPF4.5, was investigated in cassava roots as a nitrate efflux transporter on low nitrate medium and an influx transporter following exposure to high concentration of external nitrates. Moreover, RNA interference (RNAi) of MeNPF4.5 reduced the nitrate efflux capacity but the overexpressing cassava seedlings increased the ability of efflux from the elongation to the mature zone of root under low nitrate treatments. Besides, MeNPF4.5-RNAi expression reduced the nitrate influx capacity but enhanced nitrate absorption in parts of overexpressing plants from the meristem, elongation to mature zone of roots under high nitrate conditions. Furthermore, MeNPF4.5-RNAi seedlings survived owing to roots that could grow normally, but the MeNPF4.5-over-expressors showed adverse growth under 7% PEG6000 stress, suggesting that MeNPF4.5 negatively regulated the osmotic stress and was involved in nitrate flux through cassava seedlings.
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Affiliation(s)
- Liangping Zou
- Key Laboratory of Biology and Genetic Resources of Tropical Crops, Institute of Tropical Bioscience and Biotechnology, Chinese Academy of Tropical Agricultural Sciences, Haikou, 571101, China; China/Key Laboratory for Biology and Genetic Resources of Tropical Crops of Hainan Province, Hainan Institute for Tropical Agricultural Resources, Haikou, 571101, China
| | - Dengfeng Qi
- Key Laboratory of Biology and Genetic Resources of Tropical Crops, Institute of Tropical Bioscience and Biotechnology, Chinese Academy of Tropical Agricultural Sciences, Haikou, 571101, China; China/Key Laboratory for Biology and Genetic Resources of Tropical Crops of Hainan Province, Hainan Institute for Tropical Agricultural Resources, Haikou, 571101, China
| | - Shuxia Li
- Key Laboratory of Biology and Genetic Resources of Tropical Crops, Institute of Tropical Bioscience and Biotechnology, Chinese Academy of Tropical Agricultural Sciences, Haikou, 571101, China; China/Key Laboratory for Biology and Genetic Resources of Tropical Crops of Hainan Province, Hainan Institute for Tropical Agricultural Resources, Haikou, 571101, China
| | - Min Zhai
- College of Agronomy, Sichuan Agricultural University, Chengdu, Sichuan, 611130, China
| | - Zhuang Li
- College of Agronomy, Sichuan Agricultural University, Chengdu, Sichuan, 611130, China
| | - Xin Guo
- College of Plant Science & Technology of HuaZhongAgricultural University, Wuhan, Hubei, 430070, China
| | - Mengbin Ruan
- Key Laboratory of Biology and Genetic Resources of Tropical Crops, Institute of Tropical Bioscience and Biotechnology, Chinese Academy of Tropical Agricultural Sciences, Haikou, 571101, China; China/Key Laboratory for Biology and Genetic Resources of Tropical Crops of Hainan Province, Hainan Institute for Tropical Agricultural Resources, Haikou, 571101, China
| | - Xiaoling Yu
- Key Laboratory of Biology and Genetic Resources of Tropical Crops, Institute of Tropical Bioscience and Biotechnology, Chinese Academy of Tropical Agricultural Sciences, Haikou, 571101, China; China/Key Laboratory for Biology and Genetic Resources of Tropical Crops of Hainan Province, Hainan Institute for Tropical Agricultural Resources, Haikou, 571101, China
| | - Pingjuan Zhao
- Key Laboratory of Biology and Genetic Resources of Tropical Crops, Institute of Tropical Bioscience and Biotechnology, Chinese Academy of Tropical Agricultural Sciences, Haikou, 571101, China; China/Key Laboratory for Biology and Genetic Resources of Tropical Crops of Hainan Province, Hainan Institute for Tropical Agricultural Resources, Haikou, 571101, China
| | - Wenbin Li
- Key Laboratory of Biology and Genetic Resources of Tropical Crops, Institute of Tropical Bioscience and Biotechnology, Chinese Academy of Tropical Agricultural Sciences, Haikou, 571101, China; China/Key Laboratory for Biology and Genetic Resources of Tropical Crops of Hainan Province, Hainan Institute for Tropical Agricultural Resources, Haikou, 571101, China
| | - Peng Zhang
- National Key Laboratory of Plant Molecular Genetics, CAS Center for Excellence and Molecular Plant Sciences, Institute of Plant Physiology and Ecology, Chinese Academy of Science, Shanghai, 200032, China
| | - Qiuxiang Ma
- National Key Laboratory of Plant Molecular Genetics, CAS Center for Excellence and Molecular Plant Sciences, Institute of Plant Physiology and Ecology, Chinese Academy of Science, Shanghai, 200032, China.
| | - Ming Peng
- Key Laboratory of Biology and Genetic Resources of Tropical Crops, Institute of Tropical Bioscience and Biotechnology, Chinese Academy of Tropical Agricultural Sciences, Haikou, 571101, China; China/Key Laboratory for Biology and Genetic Resources of Tropical Crops of Hainan Province, Hainan Institute for Tropical Agricultural Resources, Haikou, 571101, China.
| | - Wenbin Liao
- Key Laboratory of Biology and Genetic Resources of Tropical Crops, Institute of Tropical Bioscience and Biotechnology, Chinese Academy of Tropical Agricultural Sciences, Haikou, 571101, China; China/Key Laboratory for Biology and Genetic Resources of Tropical Crops of Hainan Province, Hainan Institute for Tropical Agricultural Resources, Haikou, 571101, China.
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21
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Xia K, Pan X, Chen H, Xu X, Zhang M. Rice miR168a-5p regulates seed length, nitrogen allocation and salt tolerance by targeting OsOFP3, OsNPF2.4 and OsAGO1a, respectively. J Plant Physiol 2023; 280:153905. [PMID: 36580705 DOI: 10.1016/j.jplph.2022.153905] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/12/2022] [Revised: 09/19/2022] [Accepted: 12/21/2022] [Indexed: 06/17/2023]
Abstract
Rice microRNA168a (osa-miR168a) plays important roles in mediating flowering time, grain yield and vigor, seeding growth, and immunity by targeting the RNA-induced silencing complex component Argonaute 1 (AGO1). However, the functions of miR168a exerted by targeting other genes require further clarification before it could be used in rice molecular breeding. In this study, we identified a new target gene of osa-miR168a-5p (miR168a-5p) in rice called OsOFP3 (ovate family protein 3) and investigated the roles of miR168a-5p in response to brassinosteroids (BRs), salt stress, and nitrogen allocation. Up- and downregulated miR168a-5p expression respectively decreased and increased the expression of the BR-negative regulator OsOPF3. The results of RNA ligase-mediated rapid amplification of cDNA ends (5'RLM-RACE) revealed cleavage sites in OsOPF3 and OsNPF2.4 mRNAs. The phenotype of miR168a-5p transgenic rice was BR-associated and included the lamina bending response to BR, short seeds, and low 1000-grain weight. MicroRNA 168a-5p also regulated the expression of the nitrate transporter, OsNPF2.4, which affected nitrogen allocation, and regulated OsAGO1a expression in response to salt stress. Taken together, rice miR168a-5p regulates BR-associated pathways, nitrogen transport, and stress by targeting OsOFP3, OsNPF2.4, and OsAGO1a, respectively, resulting in a series of important agronomic traits for rice breeding.
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Affiliation(s)
- Kuaifei Xia
- Key Laboratory of South China Agricultural Plant Molecular Analysis and Genetic Improvement & Guangdong Provincial Key Laboratory of Applied Botany, South China Botanical Garden, Chinese Academy of Sciences, Guangzhou, 510650, Guangdong, China
| | - Xiaoqin Pan
- Key Laboratory of South China Agricultural Plant Molecular Analysis and Genetic Improvement & Guangdong Provincial Key Laboratory of Applied Botany, South China Botanical Garden, Chinese Academy of Sciences, Guangzhou, 510650, Guangdong, China; University of Chinese Academy of Sciences, Beijing, 100049, China
| | - Huaping Chen
- Key Laboratory of South China Agricultural Plant Molecular Analysis and Genetic Improvement & Guangdong Provincial Key Laboratory of Applied Botany, South China Botanical Garden, Chinese Academy of Sciences, Guangzhou, 510650, Guangdong, China; University of Chinese Academy of Sciences, Beijing, 100049, China
| | - Xinlan Xu
- Key Laboratory of South China Agricultural Plant Molecular Analysis and Genetic Improvement & Guangdong Provincial Key Laboratory of Applied Botany, South China Botanical Garden, Chinese Academy of Sciences, Guangzhou, 510650, Guangdong, China
| | - Mingyong Zhang
- Key Laboratory of South China Agricultural Plant Molecular Analysis and Genetic Improvement & Guangdong Provincial Key Laboratory of Applied Botany, South China Botanical Garden, Chinese Academy of Sciences, Guangzhou, 510650, Guangdong, China.
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22
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Chai X, Wang X, Pi Y, Wu T, Zhang X, Xu X, Han Z, Wang Y. Nitrate transporter MdNRT2.4 interacts with rhizosphere bacteria to enhance nitrate uptake in apple rootstocks. J Exp Bot 2022; 73:6490-6504. [PMID: 35792505 DOI: 10.1093/jxb/erac301] [Citation(s) in RCA: 4] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/31/2022] [Accepted: 07/05/2022] [Indexed: 06/15/2023]
Abstract
Plants have developed complex mechanisms to adapt to changing nitrate (NO3-) concentrations and can recruit microbes to boost nitrogen absorption. However, little is known about the relationship between functional genes and the rhizosphere microbiome in NO3- uptake of apple rootstocks. Here, we found that variation in Malus domestica NO3- transporter (MdNRT2.4) expression contributes to nitrate uptake divergence between two apple rootstocks. Overexpression of MdNRT2.4 in apple seedlings significantly improved tolerance to low nitrogen via increasing net NO3- influx at the root surface. However, inhibiting the root plasma membrane H+-ATPase activity abolished NO3- uptake and led to NO3- release, suggesting that MdNRT2.4 encodes an H+-coupled nitrate transporter. Surprisingly, the nitrogen concentration of MdNRT2.4-overexpressing apple seedlings in unsterilized nitrogen-poor soil was higher than that in sterilized nitrogen-poor soil. Using 16S ribosomal RNA gene profiling to characterize the rhizosphere microbiota, we found that MdNRT2.4-overexpressing apple seedlings recruited more bacterial taxa with nitrogen metabolic functions, especially Rhizobiaceae. We isolated a bacterial isolate ARR11 from the apple rhizosphere soil and identified it as Rhizobium. Inoculation with ARR11 improved apple seedling growth in nitrogen-poor soils, compared with uninoculated seedlings. Together, our results highlight the interaction of host plant genes with the rhizosphere microbiota for host plant nutrient uptake.
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Affiliation(s)
- Xiaofen Chai
- College of Horticulture, China Agricultural University, Beijing, P. R. China
- Key Laboratory of Biology and Genetic Improvement of Horticultural (Nutrition and Physiology), the Ministry of Agriculture and Rural Affairs, Beijing, P. R. China
| | - Xiaona Wang
- College of Horticulture, China Agricultural University, Beijing, P. R. China
- Key Laboratory of Biology and Genetic Improvement of Horticultural (Nutrition and Physiology), the Ministry of Agriculture and Rural Affairs, Beijing, P. R. China
| | - Ying Pi
- College of Horticulture, China Agricultural University, Beijing, P. R. China
- Key Laboratory of Biology and Genetic Improvement of Horticultural (Nutrition and Physiology), the Ministry of Agriculture and Rural Affairs, Beijing, P. R. China
| | - Ting Wu
- College of Horticulture, China Agricultural University, Beijing, P. R. China
- Key Laboratory of Biology and Genetic Improvement of Horticultural (Nutrition and Physiology), the Ministry of Agriculture and Rural Affairs, Beijing, P. R. China
| | - Xinzhong Zhang
- College of Horticulture, China Agricultural University, Beijing, P. R. China
- Key Laboratory of Biology and Genetic Improvement of Horticultural (Nutrition and Physiology), the Ministry of Agriculture and Rural Affairs, Beijing, P. R. China
| | - Xuefeng Xu
- College of Horticulture, China Agricultural University, Beijing, P. R. China
- Key Laboratory of Biology and Genetic Improvement of Horticultural (Nutrition and Physiology), the Ministry of Agriculture and Rural Affairs, Beijing, P. R. China
| | - Zhenhai Han
- College of Horticulture, China Agricultural University, Beijing, P. R. China
- Key Laboratory of Biology and Genetic Improvement of Horticultural (Nutrition and Physiology), the Ministry of Agriculture and Rural Affairs, Beijing, P. R. China
| | - Yi Wang
- College of Horticulture, China Agricultural University, Beijing, P. R. China
- Key Laboratory of Biology and Genetic Improvement of Horticultural (Nutrition and Physiology), the Ministry of Agriculture and Rural Affairs, Beijing, P. R. China
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23
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Zhao Z, Li M, Xu W, Liu JH, Li C. Genome-Wide Identification of NRT Gene Family and Expression Analysis of Nitrate Transporters in Response to Salt Stress in Poncirus trifoliata. Genes (Basel) 2022; 13:genes13071115. [PMID: 35885900 PMCID: PMC9323722 DOI: 10.3390/genes13071115] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/01/2022] [Revised: 06/06/2022] [Accepted: 06/20/2022] [Indexed: 11/21/2022] Open
Abstract
The uptake and transportation of nitrate play a crucial role in plant growth and development. These processes mostly depend on nitrate transporters (NRT), which guarantee the supplement of nutrition in the plant. In this study, genes encoding NRT with Major Facilitator Superfamily (MFS) domain were identified in trifoliate orange (Poncirus trifoliata (L.) Raf.). Totally, 56 NRT1s, 6 NRT2s, and 2 NAR2s were explored. The bioinformation analysis, including protein characteristics, conserved domain, motif, phylogenetic relationship, cis-acting element, and synteny correlation, indicated the evolutionary conservation and functional diversity of NRT genes. Additionally, expression profiles of PtrNRTs in different tissues demonstrated that NRT genes possessed spatio-temporal expression specificity. Further, the salt condition was certified to induce the expression of some NRT members, like PtrNPF2.1, PtrNPF7.4, and PtrNAR2.1, proposing the potential role of these NRTs in salt stress response. The identification of NRT genes and the expression pattern analysis in various tissues and salt stress lay a foundation for future research between nitrogen transport and salt resistance in P. trifoliata.
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Affiliation(s)
- Zeqi Zhao
- Key Laboratory of Horticultural Plant Biology (MOE), College of Horticulture and Forestry Science, Huazhong Agricultural University, Wuhan 430070, China; (Z.Z.); (M.L.); (W.X.); (J.-H.L.)
| | - Mengdi Li
- Key Laboratory of Horticultural Plant Biology (MOE), College of Horticulture and Forestry Science, Huazhong Agricultural University, Wuhan 430070, China; (Z.Z.); (M.L.); (W.X.); (J.-H.L.)
| | - Weiwei Xu
- Key Laboratory of Horticultural Plant Biology (MOE), College of Horticulture and Forestry Science, Huazhong Agricultural University, Wuhan 430070, China; (Z.Z.); (M.L.); (W.X.); (J.-H.L.)
| | - Ji-Hong Liu
- Key Laboratory of Horticultural Plant Biology (MOE), College of Horticulture and Forestry Science, Huazhong Agricultural University, Wuhan 430070, China; (Z.Z.); (M.L.); (W.X.); (J.-H.L.)
| | - Chunlong Li
- Key Laboratory of Horticultural Plant Biology (MOE), College of Horticulture and Forestry Science, Huazhong Agricultural University, Wuhan 430070, China; (Z.Z.); (M.L.); (W.X.); (J.-H.L.)
- Hubei Hongshan Laboratory, Wuhan 430070, China
- Correspondence:
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24
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Guan Y, Liu DF, Qiu J, Liu ZJ, He YN, Fang ZJ, Huang XH, Gong JM. The nitrate transporter OsNPF7.9 mediates nitrate allocation and the divergent nitrate use efficiency between indica and japonica rice. Plant Physiol 2022; 189:215-229. [PMID: 35148397 PMCID: PMC9070802 DOI: 10.1093/plphys/kiac044] [Citation(s) in RCA: 4] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/08/2021] [Accepted: 01/10/2022] [Indexed: 06/01/2023]
Abstract
Nitrate allocation in Arabidopsis (Arabidopsis thaliana) represents an important mechanism for mediating plant environmental adaptation. However, whether this mechanism occurs or has any physiological/agronomic importance in the ammoniphilic plant rice (Oriza sativa L.) remains unknown. Here, we address this question through functional characterization of the Nitrate transporter 1/Peptide transporter Family (NPF) transporter gene OsNPF7.9. Ectopic expression of OsNPF7.9 in Xenopus oocytes revealed that the gene encodes a low-affinity nitrate transporter. Histochemical and in-situ hybridization assays showed that OsNPF7.9 expresses preferentially in xylem parenchyma cells of vasculature tissues. Transient expression assays indicated that OsNPF7.9 localizes to the plasma membrane. Nitrate allocation from roots to shoots was essentially decreased in osnpf7.9 mutants. Biomass, grain yield, and nitrogen use efficiency (NUE) decreased in the mutant dependent on nitrate availability. Further analysis demonstrated that nitrate allocation mediated by OsNPF7.9 is essential for balancing rice growth and stress tolerance. Moreover, our research identified an indica-japonica divergent single-nucleotide polymorphism occurring in the coding region of OsNPF7.9, which correlates with enhanced nitrate allocation to shoots of indica rice, revealing that divergent nitrate allocation might represent an important component contributing to the divergent NUE between indica and japonica subspecies and was likely selected as a favorable trait during rice breeding.
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Affiliation(s)
- Yuan Guan
- National Key Laboratory of Plant Molecular Genetics, Center for Excellence in Molecular Plant Sciences, Shanghai Institute of Plant Physiology and Ecology, Chinese Academy of Sciences, Shanghai 200032, China
- Crop Breeding and Cultivation Research Institute, CIMMYT-China Specialty Maize Research Center, Shanghai Academy of Agricultural Sciences, Shanghai 201403, China
| | - De-Fen Liu
- National Key Laboratory of Plant Molecular Genetics, Center for Excellence in Molecular Plant Sciences, Shanghai Institute of Plant Physiology and Ecology, Chinese Academy of Sciences, Shanghai 200032, China
| | - Jie Qiu
- College of Life Sciences, Shanghai Key Laboratory of Plant Molecular Sciences, Shanghai Normal University, Shanghai 200234, China
| | - Zhi-Jun Liu
- National Key Laboratory of Plant Molecular Genetics, Center for Excellence in Molecular Plant Sciences, Shanghai Institute of Plant Physiology and Ecology, Chinese Academy of Sciences, Shanghai 200032, China
| | - Ya-Ni He
- National Key Laboratory of Plant Molecular Genetics, Center for Excellence in Molecular Plant Sciences, Shanghai Institute of Plant Physiology and Ecology, Chinese Academy of Sciences, Shanghai 200032, China
- Forestry and Pomology Research Institute, Shanghai Academy of Agricultural Sciences, Shanghai 201403, China
| | - Zi-Jun Fang
- National Key Laboratory of Plant Molecular Genetics, Center for Excellence in Molecular Plant Sciences, Shanghai Institute of Plant Physiology and Ecology, Chinese Academy of Sciences, Shanghai 200032, China
| | - Xue-Hui Huang
- College of Life Sciences, Shanghai Key Laboratory of Plant Molecular Sciences, Shanghai Normal University, Shanghai 200234, China
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Akbudak MA, Filiz E, Çetin D. Genome-wide identification and characterization of high-affinity nitrate transporter 2 (NRT2) gene family in tomato (Solanum lycopersicum) and their transcriptional responses to drought and salinity stresses. J Plant Physiol 2022; 272:153684. [PMID: 35349936 DOI: 10.1016/j.jplph.2022.153684] [Citation(s) in RCA: 5] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/04/2022] [Revised: 03/15/2022] [Accepted: 03/19/2022] [Indexed: 06/14/2023]
Abstract
The high-affinity nitrate transporter 2 (NRT2) proteins play vital roles in both nitrate (NO3-) uptake and translocation in plants. Although the gene families coding the NRT2 proteins have been identified and functionally characterized in many plant species, the systematic identification of NRT2 gene family members has not previously been reported in tomato (Solanum lycopersicum). Moreover, little is known about their expression profiles in response to different environmental stresses. The present study sought to identify the NRT2 gene family members within the tomato genome, and then to characterize them in detail by means of bioinformatics, physiological and expression analyses. Four novel NRT2 genes were identified in the tomato genome, all of which contained the same domain belonging to the major facilitator superfamily (PF07690). The co-expression network of the SlNRT2 genes revealed that they were co-expressed with several other genes in a number of different molecular pathways, including the transport, photosynthesis, fatty acid metabolism and amino acid catabolism pathways. Several phosphorylation sites were predicted in the NRT2 proteins. The SlNRT2 genes interact with many other genes that perform various functions in many crucial pathways within the tomato genome. The sequence variations observed at the gene and protein levels indicate the dynamic regulation of the SlNRT2 gene family members in relation to cell metabolism, particularly with regard to the nitrogen assimilation pathway. The responses of the SlNRT2 genes to drought and salinity stresses are diverse, and they are neither stress- nor tissue-specific. The findings of this study should provide a useful scientific basis for future studies concerning the roles of the NRT2 gene family in plants.
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Affiliation(s)
- M Aydın Akbudak
- Akdeniz University, Department of Agricultural Biotechnology, Antalya, Turkey.
| | - Ertugrul Filiz
- Duzce University, Department of Crop and Animal Production, Cilimli Vocational School, 81750, Cilimli, Duzce, Turkey.
| | - Durmuş Çetin
- Akdeniz University, Department of Agricultural Biotechnology, Antalya, Turkey
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26
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Kumar A, Kumar S, Venkatesh K, Singh NK, Mandal PK, Sinha SK. Physio-molecular traits of contrasting bread wheat genotypes associated with 15N influx exhibiting homeolog expression bias in nitrate transporter genes under different external nitrate concentrations. Planta 2022; 255:104. [PMID: 35416522 DOI: 10.1007/s00425-022-03890-7] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/20/2021] [Accepted: 03/31/2022] [Indexed: 06/14/2023]
Abstract
The high affinity nitrate transport system is a potential target for improving nitrogen use efficiency of bread wheat growing either under optimal or limiting nitrate concentration. Nitrate uptake is one of the most important traits to take into account to improve nitrogen use efficiency in wheat (Triticum aestivum L.). In this study, we aimed to gain an insight into the regulation of NO3- -uptake and translocation systems in two contrasting wheat genotypes [K9107(K9) vs. Choti Lerma (CL)]. Different conditions, such as NO3--uptake rates, soil-types, N-free solid external media, and external NO3- levels at the seedling stage, were considered. We also studied the contribution of homeolog expression of five genes encoding two nitrate transporters in the root tissue, along with their overall transcript expression levels relative to specific external nitrate availability. We observed that K9107 had a higher 15N influx than Choti Lerma under both limiting as well as optimum external N conditions in vermiculite-perlite (i.e., N-free solid) medium, with the improved translocation efficiency in Choti Lerma. However, in different soil types, different levels of 15N-enrichment in both the genotypes were found. Our results also demonstrated that the partitioning of dry matter in root and shoot was different under these growing conditions. Moreover, K9107 showed significantly higher relative expression of TaNRT2.1 at the lowest and TaNPF6.1 and TaNPF6.2 at the highest external nitrate concentrations. We also observed genotype-specific and nitrate starvation-dependent homeolog expression bias in all five nitrate transporter genes. Our data suggest that K9107 had a higher NO3- influx capacity, involving different nitrate transporters, than Choti Lerma at the seedling stage.
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Affiliation(s)
- Amresh Kumar
- ICAR-National Institute for Plant Biotechnology, Pusa Campus, New Delhi, 110012, India
| | - Sarvendra Kumar
- Department of Soil Science and Agricultural Chemistry, ICAR-Indian Agricultural Research Institute, Pusa Campus, New Delhi, 110012, India
| | - Karnam Venkatesh
- ICAR-Indian Institute of Wheat and Barley Research, Karnal, 132001, India
| | - Nagendra Kumar Singh
- ICAR-National Institute for Plant Biotechnology, Pusa Campus, New Delhi, 110012, India
| | - Pranab Kumar Mandal
- ICAR-National Institute for Plant Biotechnology, Pusa Campus, New Delhi, 110012, India
| | - Subodh Kumar Sinha
- ICAR-National Institute for Plant Biotechnology, Pusa Campus, New Delhi, 110012, India.
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Xiao C, Sun D, Liu B, Fang X, Li P, Jiang Y, He M, Li J, Luan S, He K. Nitrate transporter NRT1.1 and anion channel SLAH3 form a functional unit to regulate nitrate-dependent alleviation of ammonium toxicity. J Integr Plant Biol 2022; 64:942-957. [PMID: 35229477 DOI: 10.1111/jipb.13239] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/15/2022] [Accepted: 02/27/2022] [Indexed: 06/14/2023]
Abstract
Ammonium (NH4 + ) and nitrate (NO3 - ) are major inorganic nitrogen (N) sources for plants. When serving as the sole or dominant N supply, NH4 + often causes root inhibition and shoot chlorosis in plants, known as ammonium toxicity. NO3 - usually causes no toxicity and can mitigate ammonium toxicity even at low concentrations, referred to as nitrate-dependent alleviation of ammonium toxicity. Our previous studies indicated a NO3 - efflux channel SLAH3 is involved in this process. However, whether additional components contribute to NO3 - -mediated NH4 + detoxification is unknown. Previously, mutations in NO3 - transporter NRT1.1 were shown to cause enhanced resistance to high concentrations of NH4 + . Whereas, in this study, we found when the high-NH4 + medium was supplemented with low concentrations of NO3 - , nrt1.1 mutant plants showed hyper-sensitive phenotype instead. Furthermore, mutation in NRT1.1 caused enhanced medium acidification under high-NH4 + /low-NO3 - condition, suggesting NRT1.1 regulates ammonium toxicity by facilitating H+ uptake. Moreover, NRT1.1 was shown to interact with SLAH3 to form a transporter-channel complex. Interestingly, SLAH3 appeared to affect NO3 - influx while NRT1.1 influenced NO3 - efflux, suggesting NRT1.1 and SLAH3 regulate each other at protein and/or gene expression levels. Our study thus revealed NRT1.1 and SLAH3 form a functional unit to regulate nitrate-dependent alleviation of ammonium toxicity through regulating NO3 - transport and balancing rhizosphere acidification.
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Affiliation(s)
- Chengbin Xiao
- Ministry of Education Key Laboratory of Cell Activities and Stress Adaptations, School of Life Sciences, Lanzhou University, Lanzhou, 730000, China
| | - Doudou Sun
- Ministry of Education Key Laboratory of Cell Activities and Stress Adaptations, School of Life Sciences, Lanzhou University, Lanzhou, 730000, China
- School of Life Sciences, Henan Agricultural University, Zhengzhou, 450000, China
| | - Beibei Liu
- Ministry of Education Key Laboratory of Cell Activities and Stress Adaptations, School of Life Sciences, Lanzhou University, Lanzhou, 730000, China
| | - Xianming Fang
- Ministry of Education Key Laboratory of Cell Activities and Stress Adaptations, School of Life Sciences, Lanzhou University, Lanzhou, 730000, China
| | - Pengcheng Li
- Ministry of Education Key Laboratory of Cell Activities and Stress Adaptations, School of Life Sciences, Lanzhou University, Lanzhou, 730000, China
| | - Yao Jiang
- Ministry of Education Key Laboratory of Cell Activities and Stress Adaptations, School of Life Sciences, Lanzhou University, Lanzhou, 730000, China
| | - Mingming He
- Ministry of Education Key Laboratory of Cell Activities and Stress Adaptations, School of Life Sciences, Lanzhou University, Lanzhou, 730000, China
| | - Jia Li
- Ministry of Education Key Laboratory of Cell Activities and Stress Adaptations, School of Life Sciences, Lanzhou University, Lanzhou, 730000, China
- School of Life Sciences, Guangzhou University, Guangzhou, 510006, China
| | - Sheng Luan
- Department of Plant and Microbial Biology, University of California, Berkeley, 94720, CA, USA
| | - Kai He
- Ministry of Education Key Laboratory of Cell Activities and Stress Adaptations, School of Life Sciences, Lanzhou University, Lanzhou, 730000, China
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Zhou Z, Ni X, Chen S, Wu Z, Tang J, Su Y, Wang X, Wang L. Ingested microplastics impair the metabolic relationship between the giant clam Tridacna crocea and its symbionts. Aquat Toxicol 2022; 243:106075. [PMID: 35033793 DOI: 10.1016/j.aquatox.2022.106075] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/17/2021] [Revised: 12/13/2021] [Accepted: 01/03/2022] [Indexed: 05/06/2023]
Abstract
Microplastics are emerging as widespread pollutants in coral reef ecosystems worldwide; however, there is limited knowledge regarding their impact on giant clams, which are important reef builders. In the present study, the cytological, physiological, and molecular response of the giant clam Tridacna crocea to a 5 d exposure of microplastics was investigated. The concentration of microplastics in the intestine and outer mantle increased significantly and gradually after the exposure to microplastics. There were no significant changes in the density of symbiotic Symbiodiniaceae throughout the exposure period, but symbiont chlorophyll content increased significantly after 1 d of exposure. There was a significant increase in symbiont superoxide dismutase (SOD) activity, but a decrease in giant clam SOD activity and symbiont glutathione S-transferase (GST) activity. No significant changes in catalase (CAT) activity and caspase3 activation level were observed in the two symbiotic partners. Transcriptomic analysis of the giant clam revealed 138 significantly upregulated and 1390 significantly downregulated genes after 5 d of microplastic exposure. The top 20 GO terms overrepresented by these significantly downregulated genes were related to primary metabolic processes and cellular metabolic processes. No significantly upregulated genes were observed in symbionts, but 28 genes were significantly downregulated, including chloroplast oxygen-evolving enhancer, photosystem I reaction center subunit II, peptide/nitrate transporter, sodium-coupled neutral amino acid transporter, beta-glucosidase, and TPA: lipase. These results suggest that T. crocea ingests microplastics through the outer mantle and intestine, and these microplastics can suppress the photosynthesis, organic nutrient transportation, and detoxification ability of the symbionts, as well as the primary metabolism of the giant clam. This eventually could threaten their metabolic relationship and long-term survival.
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Affiliation(s)
- Zhi Zhou
- State Key Laboratory of Marine Resource Utilization in South China Sea, Hainan Aquaculture Breeding Engineering Research Center, Hainan University, Haikou, Hainan, China; Key Laboratory of Tropical Hydrobiology and Biotechnology of Hainan Province, Hainan University, Haikou, Hainan, China.
| | - Xingzhen Ni
- State Key Laboratory of Marine Resource Utilization in South China Sea, Hainan Aquaculture Breeding Engineering Research Center, Hainan University, Haikou, Hainan, China
| | - Shiquan Chen
- Hainan Academy of Ocean and Fisheries Sciences, Haikou, Hainan, China
| | - Zhongjie Wu
- Hainan Academy of Ocean and Fisheries Sciences, Haikou, Hainan, China
| | - Jia Tang
- State Key Laboratory of Marine Resource Utilization in South China Sea, Hainan Aquaculture Breeding Engineering Research Center, Hainan University, Haikou, Hainan, China
| | - Yilu Su
- State Key Laboratory of Marine Resource Utilization in South China Sea, Hainan Aquaculture Breeding Engineering Research Center, Hainan University, Haikou, Hainan, China
| | - Xingjuan Wang
- State Key Laboratory of Marine Resource Utilization in South China Sea, Hainan Aquaculture Breeding Engineering Research Center, Hainan University, Haikou, Hainan, China
| | - Lingui Wang
- State Key Laboratory of Marine Resource Utilization in South China Sea, Hainan Aquaculture Breeding Engineering Research Center, Hainan University, Haikou, Hainan, China; Key Laboratory of Tropical Hydrobiology and Biotechnology of Hainan Province, Hainan University, Haikou, Hainan, China
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Abassi S, Ki JS. Increased nitrate concentration differentially affects cell growth and expression of nitrate transporter and other nitrogen-related genes in the harmful dinoflagellate Prorocentrum minimum. Chemosphere 2022; 288:132526. [PMID: 34637868 DOI: 10.1016/j.chemosphere.2021.132526] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/11/2021] [Revised: 09/29/2021] [Accepted: 10/08/2021] [Indexed: 06/13/2023]
Abstract
The molecular mechanisms through which dinoflagellates adapt to nitrate fluctuations in aquatic environments remain poorly understood. Here, we sequenced the full-length cDNA of a nitrate transporter (NRT) gene from the harmful marine dinoflagellate Prorocentrum minimum Schiller. The cDNA length was 2431 bp. It encoded a 529-amino acid protein, which was phylogenetically clustered with proteins from other dinoflagellates. Nitrate supply promoted cell growth up to a certain concentration (∼1.76 mM) but inhibited it at higher concentrations. Interestingly, at the inhibitory concentrations, nitrite levels in the medium were considerably increased. Nitrate concentration affected the expression of PmNRT, nitrite transporter (PmNiRT), nitrate reductase (PmNR), and nitrite reductase (PmNiR). Specifically, PmNRT was upregulated after 24 h, with ∼6-fold change compared with the control level, in both nitrate-depleted and nitrate-repleted cultures. In addition, PmNR transcript levels increased to the maximum of 4-fold at 48 h but decreased thereafter. In contrast, PmNiR levels remained unchanged in both nitrate-repleted and nitrate-depleted cultures. Therefore, P. minimum likely copes with nitrate fluctuations in its environment by regulating a set of genes responsible for nitrate uptake.
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Affiliation(s)
- Sofia Abassi
- Department of Biotechnology, Sangmyung University, Seoul, 03016, South Korea
| | - Jang-Seu Ki
- Department of Biotechnology, Sangmyung University, Seoul, 03016, South Korea.
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Li Z, Hu J, Wu Y, Wang J, Song H, Chai M, Cong L, Miao F, Ma L, Tang W, Yang C, Tao Q, Zhong S, Zhao Y, Liu H, Yang G, Wang Z, Sun J. Integrative analysis of the metabolome and transcriptome reveal the phosphate deficiency response pathways of alfalfa. Plant Physiol Biochem 2022; 170:49-63. [PMID: 34847401 DOI: 10.1016/j.plaphy.2021.11.039] [Citation(s) in RCA: 7] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/27/2021] [Revised: 11/23/2021] [Accepted: 11/23/2021] [Indexed: 06/13/2023]
Abstract
Understanding the mechanisms underlying the responses to inorganic phosphate (Pi) deficiency in alfalfa will help enhance Pi acquisition efficiency and the sustainable use of phosphorous resources. Integrated global metabolomic and transcriptomic analyses of mid-vegetative alfalfa seedlings under 12-day Pi deficiency were conducted. Limited seedling growth were found, including 13.24%, 16.85% and 33.36% decreases in height, root length and photosynthesis, and a 24.10% increase in root-to-shoot ratio on day 12. A total of 322 and 448 differentially abundant metabolites and 1199 and 1061 differentially expressed genes were identified in roots and shoots. Increased (>3.68-fold) inorganic phosphate transporter 1;4 and SPX proteins levels in the roots (>2.15-fold) and shoots (>2.50-fold) were related to Pi absorption and translocation. The levels of phospholipids and Pi-binding carbohydrates and nucleosides were decreased, while those of phosphatases and pyrophosphatases in whole seedlings were induced under reduced Pi. In addition, nitrogen assimilation was affected by inhibiting high-affinity nitrate transporters (NRT2.1 and NRT3.1), and nitrate reductase. Increased delphinidin-3-glucoside might contribute to the gray-green leaves induced by Pi limitation. Stress-induced MYB, WRKY and ERF transcription factors were identified. The responses of alfalfa to Pi deficiency were summarized as local systemic signaling pathways, including root growth, stress-related responses consisting of enzymatic and nonenzymatic systems, and hormone signaling and systemic signaling pathways including Pi recycling and Pi sensing in the whole plant, as well as Pi recovery, and nitrate and metal absorption in the roots. This study provides important information on the molecular mechanism of the response to Pi deficiency in alfalfa.
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Affiliation(s)
- Zhenyi Li
- Grassland Agri-Husbandry Research Center, College of Grassland Science, Qingdao Agricultural University, Qingdao, China
| | - Jingyun Hu
- Grassland Agri-Husbandry Research Center, College of Grassland Science, Qingdao Agricultural University, Qingdao, China
| | - Yao Wu
- Grassland Agri-Husbandry Research Center, College of Grassland Science, Qingdao Agricultural University, Qingdao, China
| | - Jixiang Wang
- Grassland Agri-Husbandry Research Center, College of Grassland Science, Qingdao Agricultural University, Qingdao, China
| | - Hui Song
- Grassland Agri-Husbandry Research Center, College of Grassland Science, Qingdao Agricultural University, Qingdao, China
| | - Maofeng Chai
- Grassland Agri-Husbandry Research Center, College of Grassland Science, Qingdao Agricultural University, Qingdao, China
| | - Lili Cong
- Grassland Agri-Husbandry Research Center, College of Grassland Science, Qingdao Agricultural University, Qingdao, China
| | - Fuhong Miao
- Grassland Agri-Husbandry Research Center, College of Grassland Science, Qingdao Agricultural University, Qingdao, China
| | - Lichao Ma
- Grassland Agri-Husbandry Research Center, College of Grassland Science, Qingdao Agricultural University, Qingdao, China
| | - Wei Tang
- Grassland Agri-Husbandry Research Center, College of Grassland Science, Qingdao Agricultural University, Qingdao, China
| | - Chao Yang
- Grassland Agri-Husbandry Research Center, College of Grassland Science, Qingdao Agricultural University, Qingdao, China
| | - Qibo Tao
- Grassland Agri-Husbandry Research Center, College of Grassland Science, Qingdao Agricultural University, Qingdao, China
| | - Shangzhi Zhong
- Grassland Agri-Husbandry Research Center, College of Grassland Science, Qingdao Agricultural University, Qingdao, China
| | - Yiran Zhao
- Grassland Agri-Husbandry Research Center, College of Grassland Science, Qingdao Agricultural University, Qingdao, China
| | - Hongqing Liu
- Grassland Agri-Husbandry Research Center, College of Grassland Science, Qingdao Agricultural University, Qingdao, China
| | - Guofeng Yang
- Grassland Agri-Husbandry Research Center, College of Grassland Science, Qingdao Agricultural University, Qingdao, China
| | - Zengyu Wang
- Grassland Agri-Husbandry Research Center, College of Grassland Science, Qingdao Agricultural University, Qingdao, China
| | - Juan Sun
- Grassland Agri-Husbandry Research Center, College of Grassland Science, Qingdao Agricultural University, Qingdao, China.
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Hilleary R. Rooting out acid: H+-dependent accumulation of STOP1 drives expression of a nitrate transporter to modulate soil pH. Plant Cell 2021; 33:3606-3607. [PMID: 35231124 PMCID: PMC8643644 DOI: 10.1093/plcell/koab232] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/09/2021] [Accepted: 09/09/2021] [Indexed: 06/14/2023]
Affiliation(s)
- Richard Hilleary
- Assistant Features Editor, The Plant Cell, American Society of Plant Biologists, Rockville, MD, USA
- Department of Biology, Duke University, Durham, NC, USA
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Morales de Los Ríos L, Corratgé-Faillie C, Raddatz N, Mendoza I, Lindahl M, de Angeli A, Lacombe B, Quintero FJ, Pardo JM. The Arabidopsis protein NPF6.2/NRT1.4 is a plasma membrane nitrate transporter and a target of protein kinase CIPK23. Plant Physiol Biochem 2021; 168:239-251. [PMID: 34656860 DOI: 10.1016/j.plaphy.2021.10.016] [Citation(s) in RCA: 9] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/31/2021] [Revised: 10/07/2021] [Accepted: 10/09/2021] [Indexed: 05/02/2023]
Abstract
Nitrate and potassium nutrition is tightly coordinated in vascular plants. Physiological and molecular genetics studies have demonstrated that several NPF/NRT1 nitrate transporters have a significant impact on both uptake and the root-shoot partition of these nutrients. However, how these traits are biochemically connected remain controversial since some NPF proteins, e.g. NPF7.3/NRT1.5, have been suggested to mediate K+/H+ exchange instead of nitrate fluxes. Here we show that NPF6.2/NRT1.4, a protein that gates nitrate accumulation at the leaf petiole of Arabidopsis thaliana, also affects the root/shoot distribution of potassium. We demonstrate that NPF6.2/NRT1.4 is a plasma membrane nitrate transporter phosphorylated at threonine-98 by the CIPK23 protein kinase that is a regulatory hub for nitrogen and potassium nutrition. Heterologous expression of NPF6.2/NRT1.4 and NPF7.3/NRT1.5 in yeast mutants with altered potassium uptake and efflux systems showed no evidence of nitrate-dependent potassium transport by these proteins.
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Affiliation(s)
- Laura Morales de Los Ríos
- Institute of Plant Biochemistry and Photosyntheis (IBVF), Consejo Superior de Investigaciones Científicas and Universidad de Sevilla, 41092, Seville, Spain
| | - Claire Corratgé-Faillie
- Biochimie et Physiologie Moléculaire des Plantes, Univ. Montpellier, CNRS, INRAE, 34060, Montpellier Cedex, France
| | - Natalia Raddatz
- Institute of Plant Biochemistry and Photosyntheis (IBVF), Consejo Superior de Investigaciones Científicas and Universidad de Sevilla, 41092, Seville, Spain
| | - Imelda Mendoza
- Institute of Plant Biochemistry and Photosyntheis (IBVF), Consejo Superior de Investigaciones Científicas and Universidad de Sevilla, 41092, Seville, Spain
| | - Marika Lindahl
- Institute of Plant Biochemistry and Photosyntheis (IBVF), Consejo Superior de Investigaciones Científicas and Universidad de Sevilla, 41092, Seville, Spain
| | - Alexis de Angeli
- Biochimie et Physiologie Moléculaire des Plantes, Univ. Montpellier, CNRS, INRAE, 34060, Montpellier Cedex, France
| | - Benoit Lacombe
- Biochimie et Physiologie Moléculaire des Plantes, Univ. Montpellier, CNRS, INRAE, 34060, Montpellier Cedex, France
| | - Francisco J Quintero
- Institute of Plant Biochemistry and Photosyntheis (IBVF), Consejo Superior de Investigaciones Científicas and Universidad de Sevilla, 41092, Seville, Spain
| | - José M Pardo
- Institute of Plant Biochemistry and Photosyntheis (IBVF), Consejo Superior de Investigaciones Científicas and Universidad de Sevilla, 41092, Seville, Spain.
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Zhang J, Han Z, Lu Y, Zhao Y, Wang Y, Zhang J, Ma H, Han YZ. Genome-wide identification, structural and gene expression analysis of the nitrate transporters (NRTs) family in potato (Solanum tuberosum L.). PLoS One 2021; 16:e0257383. [PMID: 34673820 PMCID: PMC8530285 DOI: 10.1371/journal.pone.0257383] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/29/2020] [Accepted: 09/01/2021] [Indexed: 11/18/2022] Open
Abstract
Nitrogen (N2) is the most important source of mineral N for plant growth, which was mainly transported by nitrate transporters (NRTs). However, little is known about the NRT gene family in potato. In this study, StNRT gene family members were identified in potato. In addition, we performed StNRT subfamily classification, gene structure and distribution analysis, and conserved domain prediction using various bioinformatics tools. Totally, 39 StNRT gene members were identified in potato genome, including 33, 4 and 2 member belong to NRT1, NRT2, and NRT3, respectively. These 39 StNRT genes were randomly distributed on all chromosomes. The collinearity results show that StNRT members in potato are closely related to Solanum lycopersicum and Solanum melongena. For the expression, different members of StNRT play different roles in leaves and roots. Especially under sufficient nitrogen conditions, different members have a clear distribution in different tissues. These results provide valuable information for identifying the members of the StNRT family in potato and could provide functional characterization of StNRT genes in further research.
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Affiliation(s)
- Jingying Zhang
- College of horticulture, Jilin Agricultural University, Changchun City, P.R. China
| | - Zhijun Han
- College of horticulture, Jilin Agricultural University, Changchun City, P.R. China
| | - Yue Lu
- College of horticulture, Jilin Agricultural University, Changchun City, P.R. China
| | - Yanfei Zhao
- College of horticulture, Jilin Agricultural University, Changchun City, P.R. China
| | - Yaping Wang
- College of horticulture, Jilin Agricultural University, Changchun City, P.R. China
| | - Jiayue Zhang
- College of horticulture, Jilin Agricultural University, Changchun City, P.R. China
| | - Haoran Ma
- College of horticulture, Jilin Agricultural University, Changchun City, P.R. China
| | - Yu Zhu Han
- College of horticulture, Jilin Agricultural University, Changchun City, P.R. China
- * E-mail:
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Wang W, Li A, Zhang Z, Chu C. Posttranslational Modifications: Regulation of Nitrogen Utilization and Signaling. Plant Cell Physiol 2021; 62:543-552. [PMID: 33493288 PMCID: PMC8462382 DOI: 10.1093/pcp/pcab008] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/19/2020] [Accepted: 01/07/2021] [Indexed: 05/08/2023]
Abstract
Nitrogen is the most important macroelement required for the composition of key molecules, such as nucleic acids, proteins and other organic compounds. As sessile organisms, plants have evolved sophisticated mechanisms to acquire nitrogen for their normal growth and development. Besides the transcriptional and translational regulation of nitrogen uptake, assimilation, remobilization and signal transduction, posttranslational modifications (PTMs) are shown to participate in these processes in plants. In addition to alterations in protein abundance, PTMs may dramatically increase the complexity of the proteome without the concomitant changes in gene transcription and have emerged as an important type of protein regulation in terms of protein function, subcellular localization and protein activity and stability. Herein, we briefly summarize recent advances on the posttranslational regulation of nitrogen uptake, assimilation, remobilization and nitrogen signaling and discuss the underlying mechanisms of PTMs as well as the signal output of such PTMs. Understanding these regulation mechanisms will provide novel insights for improving the nitrogen use efficiency of plants.
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Affiliation(s)
- Wei Wang
- State Key Laboratory of Plant Genomics, Institute of Genetics and Developmental Biology, The Innovative Academy for Seed Design, Chinese Academy of Sciences, Beijing 100101, China
| | - Aifu Li
- State Key Laboratory of Plant Genomics, Institute of Genetics and Developmental Biology, The Innovative Academy for Seed Design, Chinese Academy of Sciences, Beijing 100101, China
| | - Zhihua Zhang
- State Key Laboratory of Plant Genomics, Institute of Genetics and Developmental Biology, The Innovative Academy for Seed Design, Chinese Academy of Sciences, Beijing 100101, China
- School of Life Sciences, Guangzhou University, Guangzhou 510006, China
| | - Chengcai Chu
- * Corresponding author: E-mail, ; Fax, +86-10-64806608
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Wei YM, Ren ZJ, Wang BH, Zhang L, Zhao YJ, Wu JW, Li LG, Zhang XS, Zhao XY. A nitrate transporter encoded by ZmNPF7.9 is essential for maize seed development. Plant Sci 2021; 308:110901. [PMID: 34034862 DOI: 10.1016/j.plantsci.2021.110901] [Citation(s) in RCA: 10] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/26/2020] [Revised: 03/23/2021] [Accepted: 03/26/2021] [Indexed: 06/12/2023]
Abstract
Nitrogen is an essential macronutrient for plants and regulates many aspects of plant growth and development. Nitrate is one of the major forms of nitrogen in plants. However, the role of nitrate uptake and allocation in seed development is not fully understood. Here, we identified the maize (Zea mays) small-kernel mutant zmnpf7.9 and characterized the candidate gene, ZmNPF7.9, which was the same gene as nitrate transport 1.5 (NRT1.5) in maize. This gene is specifically expressed in the basal endosperm transfer layer cells of maize endosperm. Dysfunction of ZmNPF7.9 resulted in delayed endosperm development, abnormal starch deposition and decreased hundred-grain weight. Functional analysis of cRNA-injected Xenopus oocytes showed that ZmNPF7.9 is a low-affinity, pH-dependent bidirectional nitrate transporter. Moreover, the amount of nitrate in mature seeds of the zmnpf7.9 mutant was reduced. These suggest that ZmNPF7.9 is involved in delivering nitrate from maternal tissues to the developing endosperm. Moreover, most of the key genes associated with glycolysis/gluconeogenesis, carbon fixation, carbon metabolism and biosynthesis of amino acids pathways in the zmnpf7.9 mutant were significantly down-regulated. Thus, our results demonstrate that ZmNPF7.9 plays a specific role in seed development and grain weight by regulating nutrition transport and metabolism, which might provide useful information for maize genetic improvement.
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Affiliation(s)
- Yi Ming Wei
- State Key Laboratory of Crop Biology, College of Life Sciences, Shandong Agricultural University, Taian, Shandong, 271018, China
| | - Zhi Jie Ren
- College of Life Sciences, Capital Normal University, Beijing, 100048, China
| | - Bo Hui Wang
- State Key Laboratory of Crop Biology, College of Life Sciences, Shandong Agricultural University, Taian, Shandong, 271018, China
| | - Lin Zhang
- State Key Laboratory of Crop Biology, College of Life Sciences, Shandong Agricultural University, Taian, Shandong, 271018, China
| | - Ya Jie Zhao
- State Key Laboratory of Crop Biology, College of Life Sciences, Shandong Agricultural University, Taian, Shandong, 271018, China
| | - Jia Wen Wu
- State Key Laboratory of Crop Biology, College of Life Sciences, Shandong Agricultural University, Taian, Shandong, 271018, China
| | - Le Gong Li
- College of Life Sciences, Capital Normal University, Beijing, 100048, China
| | - Xian Sheng Zhang
- State Key Laboratory of Crop Biology, College of Life Sciences, Shandong Agricultural University, Taian, Shandong, 271018, China; College of Life Sciences, Capital Normal University, Beijing, 100048, China.
| | - Xiang Yu Zhao
- State Key Laboratory of Crop Biology, College of Life Sciences, Shandong Agricultural University, Taian, Shandong, 271018, China; College of Life Sciences, Capital Normal University, Beijing, 100048, China.
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Zhang J, Han Z, Lu Y, Zhao Y, Wang Y, Zhang J, Ma H, Han YZ. Genome-wide identification, structural and gene expression analysis of the nitrate transporters (NRTs) family in potato (Solanum tuberosum L.). PLoS One 2021. [PMID: 34673820 DOI: 10.1371/journalpone.0257383] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 04/20/2023] Open
Abstract
Nitrogen (N2) is the most important source of mineral N for plant growth, which was mainly transported by nitrate transporters (NRTs). However, little is known about the NRT gene family in potato. In this study, StNRT gene family members were identified in potato. In addition, we performed StNRT subfamily classification, gene structure and distribution analysis, and conserved domain prediction using various bioinformatics tools. Totally, 39 StNRT gene members were identified in potato genome, including 33, 4 and 2 member belong to NRT1, NRT2, and NRT3, respectively. These 39 StNRT genes were randomly distributed on all chromosomes. The collinearity results show that StNRT members in potato are closely related to Solanum lycopersicum and Solanum melongena. For the expression, different members of StNRT play different roles in leaves and roots. Especially under sufficient nitrogen conditions, different members have a clear distribution in different tissues. These results provide valuable information for identifying the members of the StNRT family in potato and could provide functional characterization of StNRT genes in further research.
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Affiliation(s)
- Jingying Zhang
- College of horticulture, Jilin Agricultural University, Changchun City, P.R. China
| | - Zhijun Han
- College of horticulture, Jilin Agricultural University, Changchun City, P.R. China
| | - Yue Lu
- College of horticulture, Jilin Agricultural University, Changchun City, P.R. China
| | - Yanfei Zhao
- College of horticulture, Jilin Agricultural University, Changchun City, P.R. China
| | - Yaping Wang
- College of horticulture, Jilin Agricultural University, Changchun City, P.R. China
| | - Jiayue Zhang
- College of horticulture, Jilin Agricultural University, Changchun City, P.R. China
| | - Haoran Ma
- College of horticulture, Jilin Agricultural University, Changchun City, P.R. China
| | - Yu Zhu Han
- College of horticulture, Jilin Agricultural University, Changchun City, P.R. China
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He Y, Xi X, Zha Q, Lu Y, Jiang A. Ectopic expression of a grape nitrate transporter VvNPF6.5 improves nitrate content and nitrogen use efficiency in Arabidopsis. BMC Plant Biol 2020; 20:549. [PMID: 33287709 PMCID: PMC7722303 DOI: 10.1186/s12870-020-02766-w] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 06/08/2020] [Accepted: 12/01/2020] [Indexed: 06/12/2023]
Abstract
BACKGROUND Nitrate plays an important role in grapevines vegetative and reproductive development. However, how grapevines uptake, translocate and utilize nitrate and the molecular mechanism still remains to be investigated. RESULTS In this study, we report the functional characterization of VvNPF6.5, a member of nitrate transporter 1/peptide transporter family (NRT1/PTR/NPF) in Vitis vinifera. Subcellular localization in Arabidopsis protoplasts indicated that VvNPF6.5 is plasma membrane localized. Quantitative RT-PCR analysis indicated that VvNPF6.5 is expressed predominantly in roots and stems and its expression is rapidly induced by nitrate. Functional characterization using cRNA-injected Xenopus laevis oocytes showed that VvNPF6.5 uptake nitrate in a pH dependent way and function as a dual-affinity nitrate transporter involved in both high- and low-affinity nitrate uptake. Further ectopic expression of VvNPF6.5 in Arabidopsis resulted in more 15NO3- accumulation in shoots and roots and significantly improved nitrogen use efficiency (NUE). Moreover, VvNPF6.5 might participate in the nitrate signaling by positively regulating the expression of primary nitrate response genes. CONCLUSION Our results suggested that VvNPF6.5 encodes a pH-dependent, dual-affinity nitrate transporter. VvNPF6.5 regulates nitrate uptake and allocation in grapevines and is involved in primary nitrate response.
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Affiliation(s)
- Yani He
- Research Institute of Forestry and Pomology, Shanghai Key Lab of Protected Horticultural Technology, Shanghai Academy of Agricultural Sciences, Shanghai, China.
| | - Xiaojun Xi
- Research Institute of Forestry and Pomology, Shanghai Key Lab of Protected Horticultural Technology, Shanghai Academy of Agricultural Sciences, Shanghai, China
| | - Qian Zha
- Research Institute of Forestry and Pomology, Shanghai Key Lab of Protected Horticultural Technology, Shanghai Academy of Agricultural Sciences, Shanghai, China
| | - Yuting Lu
- Institute of Plant Physiology and Ecology, Shanghai Institutes for Biological Sciences, Chinese Academy of Sciences, Shanghai, China
| | - Aili Jiang
- Research Institute of Forestry and Pomology, Shanghai Key Lab of Protected Horticultural Technology, Shanghai Academy of Agricultural Sciences, Shanghai, China.
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You H, Liu Y, Minh TN, Lu H, Zhang P, Li W, Xiao J, Ding X, Li Q. Genome-wide identification and expression analyses of nitrate transporter family genes in wild soybean (Glycine soja). J Appl Genet 2020; 61:489-501. [PMID: 32779148 DOI: 10.1007/s13353-020-00571-7] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/10/2020] [Revised: 06/25/2020] [Accepted: 07/20/2020] [Indexed: 02/01/2023]
Abstract
Nitrate transporters (NRTs) are important channel proteins facilitating cross-membrane movement of small molecules like NO3- which is a critical nutrient for all life. However, the classification and evolution of nitrate transporters in the legume plants are still elusive. In this study, we surveyed the wild soybean (G. soja) genomic databases and identified 120 GsNRT1 and 5 GsNRT2 encoding genes. Phylogenetic analyses show that GsNRT1 subfamily is consisted of eight clades (NPF1 to NPF8), while GsNRT2 subfamily has only one clade. Gene chromosomal location and evolutionary historic analyses indicate that GsNRT genes are unevenly distributed on 19 out of 20 G. soja chromosomes and segmental duplications may take a major part in the expansion of GsNRT family. Investigations of gene structure and protein motif compositions suggest that GsNRT family members are highly conserved in structures of both gene and protein levels. In addition, we analyzed the spatial expression patterns of representative GsNRT genes and their responses to exogenous nitrogen and carbon supplies and different abiotic stresses. The qRT-PCR data indicated that 16 selected GsNRT genes showed various expression levels in the roots, stems, leaves, and pods of young G. soja plants, and these genes were regulated by not only nitrogen and carbohydrate nutrients but also NaCl, NaHCO3, abscisic acid (ABA), and salicylic acid (SA). These results suggest that GsNRT genes may be involved in the regulation of plant growth, development, and adaptation to environmental stresses, and the study will shed light on functional dissection of plant nitrate transporter proteins in the future.
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Affiliation(s)
- Hongguang You
- Key Laboratory of Agricultural Biological Functional Genes, Northeast Agricultural University, Harbin, 150030, China
| | - Yuanming Liu
- Key Laboratory of Agricultural Biological Functional Genes, Northeast Agricultural University, Harbin, 150030, China
| | - Thuy Nguyen Minh
- Key Laboratory of Agricultural Biological Functional Genes, Northeast Agricultural University, Harbin, 150030, China
| | - Haoran Lu
- Key Laboratory of Agricultural Biological Functional Genes, Northeast Agricultural University, Harbin, 150030, China
| | - Pengmin Zhang
- Key Laboratory of Agricultural Biological Functional Genes, Northeast Agricultural University, Harbin, 150030, China
| | - Wenfeng Li
- Key Laboratory of Agricultural Biological Functional Genes, Northeast Agricultural University, Harbin, 150030, China
| | - Jialei Xiao
- Key Laboratory of Agricultural Biological Functional Genes, Northeast Agricultural University, Harbin, 150030, China
| | - Xiaodong Ding
- Key Laboratory of Agricultural Biological Functional Genes, Northeast Agricultural University, Harbin, 150030, China
| | - Qiang Li
- Key Laboratory of Agricultural Biological Functional Genes, Northeast Agricultural University, Harbin, 150030, China.
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Abstract
Nitrate transporter 2.5 (NRT2.5) was originally characterized as the transporter for nitrogen (N) limitation. In Arabidopsis, NRT2.5 is expressed mainly under extremely low NO3- and N starvation conditions, and this must work in conjunction with NAR2.1. NRT2.5 is expressed both in the roots and leaves in Arabidopsis, poplars, tea trees and cassava. This is also expressed in the seeds of Arabidopsis and wheat. In wheat, NRT2.5 is expressed in the embryo and shell and plays a role in the accumulation of NO3- in the seeds. In maize, this is also expressed in silk, cobs and tassel husk leaves. In rice, OsNRT2.5 (also known as OsNRT2.3a) may help the species to remove NO3- from the roots to shoots. In addition, NRT2.5 may interact with TGA3, MYC1, LBD37, LBD38, TaNAC2 and other transcription factors and participate in the transmission of NO3- signals. The present review summarizes the functions of NRT2.5 in different plant species, which may help plant breeders and molecular biologists to improve crop yield. Abbreviations: NRT, Nitrate transporter; NUE, nitrogen use efficiency; PTR, peptide transporter; NPF, nitrate peptide transporter family; CLC, chloride channel; LAC1/SLAH, slow anion channel-associated 1 homolog 3; LATS, low-affinity transporter systems; HATS, high-affinity transport systems; NNP, nitrate-nitrite-porter; MFS, major facilitator superfamily.
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Affiliation(s)
- Ranran Liu
- Shandong Provincial Key Laboratory of Plant Stress Research, College of Life Science, Shandong Normal University, Jinan, P.R. China
| | - Ting Jia
- Shandong Provincial Key Laboratory of Plant Stress Research, College of Life Science, Shandong Normal University, Jinan, P.R. China
| | - Bing Cui
- Shandong Provincial Key Laboratory of Plant Stress Research, College of Life Science, Shandong Normal University, Jinan, P.R. China
| | - Jie Song
- Shandong Provincial Key Laboratory of Plant Stress Research, College of Life Science, Shandong Normal University, Jinan, P.R. China
- CONTACT Jie Song Jinan250014, P.R. China
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Wang X, Wang HF, Chen Y, Sun MM, Wang Y, Chen YF. The Transcription Factor NIGT1.2 Modulates Both Phosphate Uptake and Nitrate Influx during Phosphate Starvation in Arabidopsis and Maize. Plant Cell 2020; 32:3519-3534. [PMID: 32958562 PMCID: PMC7610294 DOI: 10.1105/tpc.20.00361] [Citation(s) in RCA: 54] [Impact Index Per Article: 13.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/07/2020] [Revised: 08/25/2020] [Accepted: 09/15/2020] [Indexed: 05/20/2023]
Abstract
Phosphorus and nitrogen are essential macronutrients for plant growth and crop production. During phosphate (Pi) starvation, plants enhanced Pi but reduced nitrate (NO3 -) uptake capacity, and the mechanism is unclear. Here, we show that a GARP-type transcription factor NITRATE-INDUCIBLE, GARP-TYPE TRANSCRIPTIOANL REPRESSOR1.2 (NIGT1.2) coordinately modulates Pi and NO3 - uptake in response to Pi starvation. Overexpression of NIGT1.2 increased Pi uptake capacity but decreased NO3 - uptake capacity in Arabidopsis (Arabidopsis thaliana). Furthermore, the nigt1.1 nigt1.2 double mutant displayed reduced Pi uptake but enhanced NO3 - uptake under low-Pi stress. During Pi starvation, NIGT1.2 directly up-regulated the transcription of the Pi transporter genes PHOSPHATE TRANSPORTER1;1 (PHT1;1) and PHOSPHATE TRANSPORTER1;4 (PHT1;4) and down-regulated expression of NO3 - transporter gene NITRATE TRANSPORTER1.1 (NRT1.1) by binding to cis-elements in their promoters. Further genetic assays demonstrated that PHT1;1, PHT1;4, and NRT1.1 were genetically epistatic to NIGT1.2 We also identified similar regulatory pathway in maize (Zea mays). These data demonstrate that the transcription factor NIGT1.2 plays a central role in modulating low-Pi-dependent uptake of Pi and NO3 -, tending toward maintenance of the phosphorus to nitrogen balance in plants during Pi starvation.
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Affiliation(s)
- Xue Wang
- State Key Laboratory of Plant Physiology and Biochemistry, College of Biological Sciences, China Agricultural University, Center for Crop Functional Genomics and Molecular Breeding, Beijing 100193, China
| | - Hai-Feng Wang
- State Key Laboratory of Plant Physiology and Biochemistry, College of Biological Sciences, China Agricultural University, Center for Crop Functional Genomics and Molecular Breeding, Beijing 100193, China
| | - Yun Chen
- State Key Laboratory of Plant Physiology and Biochemistry, College of Biological Sciences, China Agricultural University, Center for Crop Functional Genomics and Molecular Breeding, Beijing 100193, China
| | - Mi-Mi Sun
- State Key Laboratory of Plant Physiology and Biochemistry, College of Biological Sciences, China Agricultural University, Center for Crop Functional Genomics and Molecular Breeding, Beijing 100193, China
| | - Yi Wang
- State Key Laboratory of Plant Physiology and Biochemistry, College of Biological Sciences, China Agricultural University, Center for Crop Functional Genomics and Molecular Breeding, Beijing 100193, China
| | - Yi-Fang Chen
- State Key Laboratory of Plant Physiology and Biochemistry, College of Biological Sciences, China Agricultural University, Center for Crop Functional Genomics and Molecular Breeding, Beijing 100193, China
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Wang H, Wan Y, Buchner P, King R, Ma H, Hawkesford MJ. Phylogeny and gene expression of the complete NITRATE TRANSPORTER 1/PEPTIDE TRANSPORTER FAMILY in Triticum aestivum. J Exp Bot 2020; 71:4531-4546. [PMID: 32462194 PMCID: PMC7382379 DOI: 10.1093/jxb/eraa210] [Citation(s) in RCA: 26] [Impact Index Per Article: 6.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/03/2019] [Accepted: 05/04/2020] [Indexed: 05/10/2023]
Abstract
NPF genes encode membrane transporters involved in the transport of a large variety of substrates including nitrate and peptides. The NPF gene family has been described for many plants, but the whole NPF gene family for wheat has not been completely identified. The release of the wheat reference genome has enabled the identification of the entire wheat NPF gene family. A systematic analysis of the whole wheat NPF gene family was performed, including responses of specific gene expression to development and nitrogen supply. A total of 331 NPF genes (113 homoeologous groups) have been identified in wheat. The chromosomal location of the NPF genes is unevenly distributed, with predominant occurrence in the long arms of the chromosomes. The phylogenetic analysis indicated that wheat NPF genes are closely clustered with Arabidopsis, Brachypodium, and rice orthologues, and subdivided into eight subfamilies. The expression profiles of wheat NPF genes were examined using RNA-seq data, and a subset of 44 NPF genes (homoeologous groups) with contrasting expression responses to nitrogen and/or development in different tissues were identified. The systematic identification of gene composition, chromosomal locations, evolutionary relationships, and expression profiles contributes to a better understanding of the roles of the wheat NPF genes and lays the foundation for further functional analysis in wheat.
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Affiliation(s)
- Huadun Wang
- Institute of Food Crops, Provincial Key Laboratory of Agrobiology, Jiangsu Academy of Agricultural Sciences, Nanjing, China
| | | | - Peter Buchner
- Rothamsted Research, West Common, Harpenden, UK
- Correspondence:
| | - Robert King
- Rothamsted Research, West Common, Harpenden, UK
| | - Hongxiang Ma
- Institute of Food Crops, Provincial Key Laboratory of Agrobiology, Jiangsu Academy of Agricultural Sciences, Nanjing, China
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Pinto-Irish K, Coba de la Peña T, Ostria-Gallardo E, Ibáñez C, Briones V, Vergara A, Alvarez R, Castro C, Sanhueza C, Castro PA, Bascuñán-Godoy L. Seed characterization and early nitrogen metabolism performance of seedlings from Altiplano and coastal ecotypes of Quinoa. BMC Plant Biol 2020; 20:343. [PMID: 32693791 PMCID: PMC7372889 DOI: 10.1186/s12870-020-02542-w] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/27/2020] [Accepted: 07/06/2020] [Indexed: 05/19/2023]
Abstract
BACKGROUND Early seed germination and a functional root system development during establishment are crucial attributes contributing to nutrient competence under marginal nutrient soil conditions. Chenopodium quinoa Willd (Chenopodiaceae) is a rustic crop, able to grow in marginal areas. Altiplano and Coastal/Lowlands are two representative zones of quinoa cultivation in South America with contrasting soil fertility and edaphoclimatic conditions. In the present work, we hypothesize that the ecotypes of Quinoa from Altiplano (landrace Socaire) and from Coastal/Lowland (landrace Faro) have developed differential adaptive responses in order to survive under conditions of low availability of N in their respective climatic zones of Altiplano and Lowlands. In order to understand intrinsic differences for N competence between landraces, seed metabolite profile and germinative capacity were studied. Additionally, in order to elucidate the mechanisms of N uptake and assimilation at limiting N conditions during establishment, germinated seeds of both landraces were grown at either sufficient nitrate (HN) or low nitrate (LN) supply. We studied the photosynthetic performance, protein storage, root morphometrical parameters, activity and expression of N-assimilating enzymes, and the expression of nitrate transporters of roots in plants submitted to the different treatments. RESULTS Seeds from Socaire landrace presented higher content of free N-related metabolites and faster seed germination rate compared to Faro landrace. Seedlings of both ecotypes presented similar physiological performance at HN supply, but at LN supply their differences were exalted. At LN, Socaire plants showed an increased root biomass (including a higher number and total length of lateral roots), a differential regulation of a nitrate transporter (a NPF6.3-like homologue) belonging to the Low Affinity Transport System (LATS), and an upregulation of a nitrate transporter (a NRT2.1-like homologue) belonging to the High Affinity nitrate Transport System (HATS) compared to Faro. These responses as a whole could be linked to a higher amount of stored proteins in leaves, associated to an enhanced photochemical performance in Altiplano plants, in comparison to Lowland quinoa plants. CONCLUSIONS These differential characteristics of Socaire over Faro plants could involve an adaptation to enhanced nitrate uptake under the brutal unfavorable climate conditions of Altiplano.
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Affiliation(s)
| | | | | | - Cristian Ibáñez
- Departamento de Biología, Universidad de La Serena, Av. Raúl Bitrán 1305, 1710088, La Serena, Chile
| | - Vilbett Briones
- Departamento de Ingeniería en Alimentos, Universidad de La Serena, La Serena, Chile
| | - Alexander Vergara
- Umeå Plant Science Centre, Department of Forest Genetics and Plant Physiology, Swedish University of Agricultural Sciences, SE901 83, Umeå, Sweden
| | - Rodrigo Alvarez
- Centro de Estudios Avanzados en Zonas Áridas (CEAZA), 1710088, La Serena, Chile
- Escuela de Tecnología Médica, Facultad de Salud, Sede La Serena, Universidad Santo Tomás, La Serena, 1710172, Chile
| | - Catalina Castro
- Laboratorio de Fisiología Vegetal, Departamento de Botánica, Facultad de Ciencias Naturales y Oceanográficas, Universidad de Concepción, Casilla 160-C, 4070386, Concepción, Chile
| | - Carolina Sanhueza
- Laboratorio de Fisiología Vegetal, Departamento de Botánica, Facultad de Ciencias Naturales y Oceanográficas, Universidad de Concepción, Casilla 160-C, 4070386, Concepción, Chile
| | - Patricio A Castro
- Departamento de Fisiología, Facultad de Ciencias Biológicas, Universidad de Concepción, 4070386, Concepción, Chile.
| | - Luisa Bascuñán-Godoy
- Centro de Estudios Avanzados en Zonas Áridas (CEAZA), 1710088, La Serena, Chile.
- Laboratorio de Fisiología Vegetal, Departamento de Botánica, Facultad de Ciencias Naturales y Oceanográficas, Universidad de Concepción, Casilla 160-C, 4070386, Concepción, Chile.
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Wang S, Chen A, Xie K, Yang X, Luo Z, Chen J, Zeng D, Ren Y, Yang C, Wang L, Feng H, López-Arredondo DL, Herrera-Estrella LR, Xu G. Functional analysis of the OsNPF4.5 nitrate transporter reveals a conserved mycorrhizal pathway of nitrogen acquisition in plants. Proc Natl Acad Sci U S A 2020; 117:16649-16659. [PMID: 32586957 PMCID: PMC7368293 DOI: 10.1073/pnas.2000926117] [Citation(s) in RCA: 77] [Impact Index Per Article: 19.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/31/2022] Open
Abstract
Low availability of nitrogen (N) is often a major limiting factor to crop yield in most nutrient-poor soils. Arbuscular mycorrhizal (AM) fungi are beneficial symbionts of most land plants that enhance plant nutrient uptake, particularly of phosphate. A growing number of reports point to the substantially increased N accumulation in many mycorrhizal plants; however, the contribution of AM symbiosis to plant N nutrition and the mechanisms underlying the AM-mediated N acquisition are still in the early stages of being understood. Here, we report that inoculation with AM fungus Rhizophagus irregularis remarkably promoted rice (Oryza sativa) growth and N acquisition, and about 42% of the overall N acquired by rice roots could be delivered via the symbiotic route under N-NO3- supply condition. Mycorrhizal colonization strongly induced expression of the putative nitrate transporter gene OsNPF4.5 in rice roots, and its orthologs ZmNPF4.5 in Zea mays and SbNPF4.5 in Sorghum bicolor OsNPF4.5 is exclusively expressed in the cells containing arbuscules and displayed a low-affinity NO3- transport activity when expressed in Xenopus laevis oocytes. Moreover, knockout of OsNPF4.5 resulted in a 45% decrease in symbiotic N uptake and a significant reduction in arbuscule incidence when NO3- was supplied as an N source. Based on our results, we propose that the NPF4.5 plays a key role in mycorrhizal NO3- acquisition, a symbiotic N uptake route that might be highly conserved in gramineous species.
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Affiliation(s)
- Shuangshuang Wang
- State Key Laboratory of Crop Genetics and Germplasm Enhancement, College of Resources and Environmental Sciences, Nanjing Agricultural University, 210095 Nanjing, China
- Key Laboratory of Plant Nutrition and Fertilization in Lower-Middle Reaches of the Yangtze River, Ministry of Agriculture, Nanjing Agricultural University, 210095 Nanjing, China
| | - Aiqun Chen
- State Key Laboratory of Crop Genetics and Germplasm Enhancement, College of Resources and Environmental Sciences, Nanjing Agricultural University, 210095 Nanjing, China;
- Key Laboratory of Plant Nutrition and Fertilization in Lower-Middle Reaches of the Yangtze River, Ministry of Agriculture, Nanjing Agricultural University, 210095 Nanjing, China
| | - Kun Xie
- State Key Laboratory of Crop Genetics and Germplasm Enhancement, College of Resources and Environmental Sciences, Nanjing Agricultural University, 210095 Nanjing, China
- Key Laboratory of Plant Nutrition and Fertilization in Lower-Middle Reaches of the Yangtze River, Ministry of Agriculture, Nanjing Agricultural University, 210095 Nanjing, China
| | - Xiaofeng Yang
- State Key Laboratory of Crop Genetics and Germplasm Enhancement, College of Resources and Environmental Sciences, Nanjing Agricultural University, 210095 Nanjing, China
- Key Laboratory of Plant Nutrition and Fertilization in Lower-Middle Reaches of the Yangtze River, Ministry of Agriculture, Nanjing Agricultural University, 210095 Nanjing, China
| | - Zhenzhen Luo
- State Key Laboratory of Crop Genetics and Germplasm Enhancement, College of Resources and Environmental Sciences, Nanjing Agricultural University, 210095 Nanjing, China
| | - Jiadong Chen
- State Key Laboratory of Crop Genetics and Germplasm Enhancement, College of Resources and Environmental Sciences, Nanjing Agricultural University, 210095 Nanjing, China
- Key Laboratory of Plant Nutrition and Fertilization in Lower-Middle Reaches of the Yangtze River, Ministry of Agriculture, Nanjing Agricultural University, 210095 Nanjing, China
| | - Dechao Zeng
- State Key Laboratory of Crop Genetics and Germplasm Enhancement, College of Resources and Environmental Sciences, Nanjing Agricultural University, 210095 Nanjing, China
| | - Yuhan Ren
- State Key Laboratory of Crop Genetics and Germplasm Enhancement, College of Resources and Environmental Sciences, Nanjing Agricultural University, 210095 Nanjing, China
| | - Congfan Yang
- State Key Laboratory of Crop Genetics and Germplasm Enhancement, College of Resources and Environmental Sciences, Nanjing Agricultural University, 210095 Nanjing, China
| | - Lingxiao Wang
- State Key Laboratory of Crop Genetics and Germplasm Enhancement, College of Resources and Environmental Sciences, Nanjing Agricultural University, 210095 Nanjing, China
| | - Huimin Feng
- State Key Laboratory of Crop Genetics and Germplasm Enhancement, College of Resources and Environmental Sciences, Nanjing Agricultural University, 210095 Nanjing, China
- Key Laboratory of Plant Nutrition and Fertilization in Lower-Middle Reaches of the Yangtze River, Ministry of Agriculture, Nanjing Agricultural University, 210095 Nanjing, China
| | - Damar Lizbeth López-Arredondo
- State Key Laboratory of Crop Genetics and Germplasm Enhancement, College of Resources and Environmental Sciences, Nanjing Agricultural University, 210095 Nanjing, China
- Institute of Genomics for Crop Abiotic Stress Tolerance, Department of Plant and Soil Sciences, Texas Tech University, Lubbock, TX 79409
| | - Luis Rafael Herrera-Estrella
- State Key Laboratory of Crop Genetics and Germplasm Enhancement, College of Resources and Environmental Sciences, Nanjing Agricultural University, 210095 Nanjing, China;
- Institute of Genomics for Crop Abiotic Stress Tolerance, Department of Plant and Soil Sciences, Texas Tech University, Lubbock, TX 79409
- Laboratorio Nacional de Genómica para la Biodiversidad, Unidad de Genómica Avanzada del Centro de Investigación y de Estudios Avanzados del Instituto Politécnico Nacional, 36500 Irapuato, Mexico
| | - Guohua Xu
- State Key Laboratory of Crop Genetics and Germplasm Enhancement, College of Resources and Environmental Sciences, Nanjing Agricultural University, 210095 Nanjing, China;
- Key Laboratory of Plant Nutrition and Fertilization in Lower-Middle Reaches of the Yangtze River, Ministry of Agriculture, Nanjing Agricultural University, 210095 Nanjing, China
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Wang Q, Huang Y, Ren Z, Zhang X, Ren J, Su J, Zhang C, Tian J, Yu Y, Gao GF, Li L, Kong Z. Transfer cells mediate nitrate uptake to control root nodule symbiosis. Nat Plants 2020; 6:800-808. [PMID: 32514144 DOI: 10.1038/s41477-020-0683-6] [Citation(s) in RCA: 29] [Impact Index Per Article: 7.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/03/2019] [Accepted: 04/29/2020] [Indexed: 05/25/2023]
Abstract
Root nodule symbiosis enables nitrogen fixation in legumes and, therefore, improves crop production for sustainable agriculture1,2. Environmental nitrate levels affect nodulation and nitrogen fixation, but the mechanisms by which legume plants modulate nitrate uptake to regulate nodule symbiosis remain unclear1. Here, we identify a member of the Medicago truncatula nitrate peptide family (NPF), NPF7.6, which is expressed specifically in the nodule vasculature. NPF7.6 localizes to the plasma membrane of nodule transfer cells (NTCs), where it functions as a high-affinity nitrate transporter. Transfer cells show characteristic wall ingrowths that enhance the capacity for membrane transport at the apoplasmic-symplasmic interface between the vasculature and surrounding tissues3. Importantly, knockout of NPF7.6 using CRISPR-Cas9 resulted in developmental defects of the nodule vasculature, with excessive expansion of NTC plasma membranes. npf7.6 nodules showed severely compromised nitrate responsiveness caused by an attenuated ability to transport nitrate. Moreover, npf7.6 nodules exhibited disturbed nitric oxide homeostasis and a notable decrease in nitrogenase activity. Our findings indicate that NPF7.6 has been co-opted into a regulatory role in nodulation, functioning in nitrate uptake through NTCs to fine-tune nodule symbiosis in response to fluctuating environmental nitrate status. These observations will inform efforts to optimize nitrogen fixation in legume crops.
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Affiliation(s)
- Qi Wang
- State Key Laboratory of Plant Genomics, Institute of Microbiology, Innovative Academy of Seed Design, Chinese Academy of Sciences, Beijing, China
| | - Yige Huang
- State Key Laboratory of Plant Genomics, Institute of Microbiology, Innovative Academy of Seed Design, Chinese Academy of Sciences, Beijing, China
- College of Advanced Agricultural Sciences, University of Chinese Academy of Sciences, Beijing, China
| | - Zhijie Ren
- College of Life Sciences, Capital Normal University, Beijing, China
| | - Xiaxia Zhang
- State Key Laboratory of Plant Genomics, Institute of Microbiology, Innovative Academy of Seed Design, Chinese Academy of Sciences, Beijing, China
- College of Advanced Agricultural Sciences, University of Chinese Academy of Sciences, Beijing, China
| | - Jing Ren
- State Key Laboratory of Plant Genomics, Institute of Microbiology, Innovative Academy of Seed Design, Chinese Academy of Sciences, Beijing, China
- College of Advanced Agricultural Sciences, University of Chinese Academy of Sciences, Beijing, China
| | - Jiaqi Su
- Chinese Academy of Sciences Key Laboratory of Pathogenic Microbiology and Immunology, Institute of Microbiology, Chinese Academy of Sciences, Beijing, China
| | - Chen Zhang
- State Key Laboratory of Plant Genomics, Institute of Microbiology, Innovative Academy of Seed Design, Chinese Academy of Sciences, Beijing, China
- College of Advanced Agricultural Sciences, University of Chinese Academy of Sciences, Beijing, China
| | - Juan Tian
- State Key Laboratory of Plant Genomics, Institute of Microbiology, Innovative Academy of Seed Design, Chinese Academy of Sciences, Beijing, China
| | - Yanjun Yu
- State Key Laboratory of Plant Genomics, Institute of Microbiology, Innovative Academy of Seed Design, Chinese Academy of Sciences, Beijing, China
| | - George F Gao
- Chinese Academy of Sciences Key Laboratory of Pathogenic Microbiology and Immunology, Institute of Microbiology, Chinese Academy of Sciences, Beijing, China
| | - Legong Li
- College of Life Sciences, Capital Normal University, Beijing, China
| | - Zhaosheng Kong
- State Key Laboratory of Plant Genomics, Institute of Microbiology, Innovative Academy of Seed Design, Chinese Academy of Sciences, Beijing, China.
- College of Advanced Agricultural Sciences, University of Chinese Academy of Sciences, Beijing, China.
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Vidal EA, Alvarez JM, Araus V, Riveras E, Brooks MD, Krouk G, Ruffel S, Lejay L, Crawford NM, Coruzzi GM, Gutiérrez RA. Nitrate in 2020: Thirty Years from Transport to Signaling Networks. Plant Cell 2020; 32:2094-2119. [PMID: 32169959 PMCID: PMC7346567 DOI: 10.1105/tpc.19.00748] [Citation(s) in RCA: 154] [Impact Index Per Article: 38.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/03/2019] [Revised: 02/05/2020] [Accepted: 03/10/2020] [Indexed: 05/18/2023]
Abstract
Nitrogen (N) is an essential macronutrient for plants and a major limiting factor for plant growth and crop production. Nitrate is the main source of N available to plants in agricultural soils and in many natural environments. Sustaining agricultural productivity is of paramount importance in the current scenario of increasing world population, diversification of crop uses, and climate change. Plant productivity for major crops around the world, however, is still supported by excess application of N-rich fertilizers with detrimental economic and environmental impacts. Thus, understanding how plants regulate nitrate uptake and metabolism is key for developing new crops with enhanced N use efficiency and to cope with future world food demands. The study of plant responses to nitrate has gained considerable interest over the last 30 years. This review provides an overview of key findings in nitrate research, spanning biochemistry, molecular genetics, genomics, and systems biology. We discuss how we have reached our current view of nitrate transport, local and systemic nitrate sensing/signaling, and the regulatory networks underlying nitrate-controlled outputs in plants. We hope this summary will serve not only as a timeline and information repository but also as a baseline to define outstanding questions for future research.
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Affiliation(s)
- Elena A Vidal
- Millennium Institute for Integrative Biology, Santiago, Chile, 7500565
- Centro de Genómica y Bioinformática, Facultad de Ciencias, Universidad Mayor, Santiago, Chile, 8580745
- Escuela de Biotecnología, Facultad de Ciencias, Universidad Mayor, Santiago, Chile, 8580745
| | - José M Alvarez
- Millennium Institute for Integrative Biology, Santiago, Chile, 7500565
- Centro de Genómica y Bioinformática, Facultad de Ciencias, Universidad Mayor, Santiago, Chile, 8580745
- Center for Genomics and Systems Biology, Department of Biology, New York University, New York, New York 10003
| | - Viviana Araus
- Center for Genomics and Systems Biology, Department of Biology, New York University, New York, New York 10003
| | - Eleodoro Riveras
- Millennium Institute for Integrative Biology, Santiago, Chile, 7500565
- Departamento de Genética Molecular y Microbiología, Facultad de Ciencias Biológicas, Pontificia Universidad Católica de Chile, Santiago, Chile, 8331150
- FONDAP Center for Genome Regulation, Santiago, Chile, 8370415
| | - Matthew D Brooks
- Center for Genomics and Systems Biology, Department of Biology, New York University, New York, New York 10003
| | - Gabriel Krouk
- Biochemistry and Plant Molecular Physiology, CNRS, INRA, Montpellier SupAgro, Universite Montpellier, Montpellier, France, 34060
| | - Sandrine Ruffel
- Biochemistry and Plant Molecular Physiology, CNRS, INRA, Montpellier SupAgro, Universite Montpellier, Montpellier, France, 34060
| | - Laurence Lejay
- Biochemistry and Plant Molecular Physiology, CNRS, INRA, Montpellier SupAgro, Universite Montpellier, Montpellier, France, 34060
| | - Nigel M Crawford
- Section of Cell and Developmental Biology, Division of Biological Sciences, University of California at San Diego, La Jolla, California, 92093
| | - Gloria M Coruzzi
- Center for Genomics and Systems Biology, Department of Biology, New York University, New York, New York 10003
| | - Rodrigo A Gutiérrez
- Millennium Institute for Integrative Biology, Santiago, Chile, 7500565
- Departamento de Genética Molecular y Microbiología, Facultad de Ciencias Biológicas, Pontificia Universidad Católica de Chile, Santiago, Chile, 8331150
- FONDAP Center for Genome Regulation, Santiago, Chile, 8370415
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46
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Guo B, Li Y, Wang S, Li D, Lv C, Xu R. Characterization of the Nitrate Transporter gene family and functional identification of HvNRT2.1 in barley (Hordeum vulgare L.). PLoS One 2020; 15:e0232056. [PMID: 32324773 PMCID: PMC7179922 DOI: 10.1371/journal.pone.0232056] [Citation(s) in RCA: 15] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/05/2019] [Accepted: 04/06/2020] [Indexed: 11/19/2022] Open
Abstract
Nitrogen use efficiency (NUE) is the efficiency with which plants acquire and use nitrogen. Plants have high-affinity nitrate transport systems, which involve certain nitrate transporter (NRT) genes. However, limited data are available on the contribution of the NRT2/3 gene family in barley nitrate transport. In the present study, ten putative NRT2 and three putative NRT3 genes were identified using bioinformatics methods. All the HvNRT2/3 genes were located on chromosomes 3H, 5H, 6H or 7H. Remarkably, the presence of tandem repeats indicated that duplication events contributed to the expansion of the NRT2 gene family in barley. In addition, the HvNRT2/3 genes displayed various expression patterns at selected developmental stages and were induced in the roots by both low and high nitrogen levels. Furthermore, the overexpression of HvNRT2.1 improved the yield related traits in Arabidopsis. Taken together, the data generated in the present study will be useful for genome-wide analyses to determine the precise role of the HvNRT2/3 genes during barley development, with the ultimate goal of improving NUE and crop production.
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Affiliation(s)
- Baojian Guo
- Jiangsu Key Laboratory of Crop Genetics and Physiology/ Key Laboratory of Plant Functional Genomics of the Ministry of Education/ Jiangsu Key Laboratory of Crop Genomics and Molecular Breeding, Agricultural College of Yangzhou University, Yangzhou, China
- Jiangsu Co-Innovation Center for Modern Production Technology of Grain Crops, Yangzhou University, Yangzhou, China
- Barley Research Institution of Yangzhou University, Yangzhou University, Yangzhou, China
| | - Ying Li
- Jiangsu Key Laboratory of Crop Genetics and Physiology/ Key Laboratory of Plant Functional Genomics of the Ministry of Education/ Jiangsu Key Laboratory of Crop Genomics and Molecular Breeding, Agricultural College of Yangzhou University, Yangzhou, China
- Jiangsu Co-Innovation Center for Modern Production Technology of Grain Crops, Yangzhou University, Yangzhou, China
- Barley Research Institution of Yangzhou University, Yangzhou University, Yangzhou, China
| | - Shuang Wang
- Jiangsu Key Laboratory of Crop Genetics and Physiology/ Key Laboratory of Plant Functional Genomics of the Ministry of Education/ Jiangsu Key Laboratory of Crop Genomics and Molecular Breeding, Agricultural College of Yangzhou University, Yangzhou, China
- Jiangsu Co-Innovation Center for Modern Production Technology of Grain Crops, Yangzhou University, Yangzhou, China
- Barley Research Institution of Yangzhou University, Yangzhou University, Yangzhou, China
| | - Dongfang Li
- Jiangsu Key Laboratory of Crop Genetics and Physiology/ Key Laboratory of Plant Functional Genomics of the Ministry of Education/ Jiangsu Key Laboratory of Crop Genomics and Molecular Breeding, Agricultural College of Yangzhou University, Yangzhou, China
- Jiangsu Co-Innovation Center for Modern Production Technology of Grain Crops, Yangzhou University, Yangzhou, China
- Barley Research Institution of Yangzhou University, Yangzhou University, Yangzhou, China
| | - Chao Lv
- Jiangsu Key Laboratory of Crop Genetics and Physiology/ Key Laboratory of Plant Functional Genomics of the Ministry of Education/ Jiangsu Key Laboratory of Crop Genomics and Molecular Breeding, Agricultural College of Yangzhou University, Yangzhou, China
- Jiangsu Co-Innovation Center for Modern Production Technology of Grain Crops, Yangzhou University, Yangzhou, China
- Barley Research Institution of Yangzhou University, Yangzhou University, Yangzhou, China
| | - Rugen Xu
- Jiangsu Key Laboratory of Crop Genetics and Physiology/ Key Laboratory of Plant Functional Genomics of the Ministry of Education/ Jiangsu Key Laboratory of Crop Genomics and Molecular Breeding, Agricultural College of Yangzhou University, Yangzhou, China
- Jiangsu Co-Innovation Center for Modern Production Technology of Grain Crops, Yangzhou University, Yangzhou, China
- Barley Research Institution of Yangzhou University, Yangzhou University, Yangzhou, China
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47
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Klaassen MT, Dees DCT, Garrido RM, Báez JA, Schrijen M, Baldeón Mendoza PG, Trindade LM. Overexpression of a putative nitrate transporter (StNPF1.11) increases plant height, leaf chlorophyll content and tuber protein content of young potato plants. Funct Plant Biol 2020; 47:464-472. [PMID: 32209206 DOI: 10.1071/fp19342] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/29/2019] [Accepted: 12/16/2019] [Indexed: 05/13/2023]
Abstract
Nitrate (NO3-) fertilisers are commonly used to improve the yield and quality of most non-legume crops such as potato (Solanum tuberosum L.). Root cells absorb nitrate from the soil using plasma membrane-bound transporters. In this study, we overexpressed a putative nitrate transporter from potato (StNPF1.11) to study its effect on the level of tuber protein content in potato. At 10 weeks after planting, overexpression of StNPF1.11 increased the mean level of protein content of all n = 23 transformants by 42% compared with the wild-type control. The level of chlorophyll content in leaves (from upper and lower plant parts) also increased for several individuals at 10 weeks. Tuber yield (fresh) was not structurally impaired; however, the mean tuber dry matter content of the transformants was reduced by 3-8% at 19 weeks. At 19 weeks, an overall increase in protein content was not clearly observed. Throughout plant development, half of the transformants were taller than the control. A basic understanding of the mechanisms that regulate plant nitrogen uptake, transport and utilisation, enable the development of tools to improve both crop nutrition and crop quality that are needed to enhance the viability and sustainability of future plant production systems.
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Affiliation(s)
- Michiel T Klaassen
- Wageningen University and Research, Plant Breeding, PO Box 386, 6700 AJ Wageningen, The Netherlands; and Aeres University of Applied Sciences, Department of Applied Research, PO Box 374, 8250 AJ Dronten, The Netherlands
| | - Dianka C T Dees
- Wageningen University and Research, Plant Breeding, PO Box 386, 6700 AJ Wageningen, The Netherlands
| | - Rommel M Garrido
- Wageningen University and Research, Plant Breeding, PO Box 386, 6700 AJ Wageningen, The Netherlands
| | - Jorge Alemán Báez
- Wageningen University and Research, Plant Breeding, PO Box 386, 6700 AJ Wageningen, The Netherlands
| | - Michiel Schrijen
- Wageningen University and Research, Plant Breeding, PO Box 386, 6700 AJ Wageningen, The Netherlands
| | - Pablo G Baldeón Mendoza
- Wageningen University and Research, Plant Breeding, PO Box 386, 6700 AJ Wageningen, The Netherlands
| | - Luisa M Trindade
- Wageningen University and Research, Plant Breeding, PO Box 386, 6700 AJ Wageningen, The Netherlands; and Corresponding author.
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48
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Li Q, Ding G, Yang N, White PJ, Ye X, Cai H, Lu J, Shi L, Xu F. Comparative genome and transcriptome analysis unravels key factors of nitrogen use efficiency in Brassica napus L. Plant Cell Environ 2020; 43:712-731. [PMID: 31759338 DOI: 10.1111/pce.13689] [Citation(s) in RCA: 13] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/12/2019] [Accepted: 11/18/2019] [Indexed: 06/10/2023]
Abstract
Considerable genetic variation in agronomic nitrogen (N) use efficiency (NUE) has been reported among genotypes of Brassica napus. However, the physiological and molecular mechanisms underpinning these differences remain poorly understood. In this study, physiological and genetic factors impacting NUE were identified in field trials and hydroponic experiments using two B. napus genotypes with contrasting NUE. The results showed that the N-efficient genotype (D4-15) had greater N uptake and utilization efficiencies, more root tips, larger root surface and root volume, and higher N assimilation and photosynthesis capacity than the N-inefficient genotype (D2-1). Genomic analysis revealed that D4-15 had a greater genome diversity related to NUE than D2-1. By combining genomic and transcriptomic analysis, genes involved in photosynthesis and C/N metabolism were implicated in conferring NUE. Co-expression network analysis of genes that differed between the two genotypes suggested gene clusters impacting NUE. A nitrate transporter gene BnaA06g04560D (NRT2.1) and two vacuole nitrate transporter CLC genes (BnaA02g11800D and BnaA02g28670D) were up-regulated by N starvation in D4-15 but not in D2-1. The study revealed that high N uptake and utilization efficiencies, maintained photosynthesis and coordinated C/N metabolism confer high NUE in B. napus, and identified candidate genes that could facilitate breeding for enhanced NUE in B. napus.
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Affiliation(s)
- Quan Li
- National Key Laboratory of Crop Genetic Improvement, Huazhong Agricultural University, Wuhan 430070, China
- Microelement Research Center/Key Laboratory of Arable Land Conservation (Middle and Lower Reaches of Yangtze River), Ministry of Agriculture and Rural Affairs, Huazhong Agricultural University, Wuhan 430070, China
| | - Guangda Ding
- National Key Laboratory of Crop Genetic Improvement, Huazhong Agricultural University, Wuhan 430070, China
- Microelement Research Center/Key Laboratory of Arable Land Conservation (Middle and Lower Reaches of Yangtze River), Ministry of Agriculture and Rural Affairs, Huazhong Agricultural University, Wuhan 430070, China
| | - Ningmei Yang
- National Key Laboratory of Crop Genetic Improvement, Huazhong Agricultural University, Wuhan 430070, China
- Microelement Research Center/Key Laboratory of Arable Land Conservation (Middle and Lower Reaches of Yangtze River), Ministry of Agriculture and Rural Affairs, Huazhong Agricultural University, Wuhan 430070, China
| | - Philip John White
- National Key Laboratory of Crop Genetic Improvement, Huazhong Agricultural University, Wuhan 430070, China
- The James Hutton Institute, Invergowrie, Dundee, UK
| | - Xiangsheng Ye
- Microelement Research Center/Key Laboratory of Arable Land Conservation (Middle and Lower Reaches of Yangtze River), Ministry of Agriculture and Rural Affairs, Huazhong Agricultural University, Wuhan 430070, China
| | - Hongmei Cai
- Microelement Research Center/Key Laboratory of Arable Land Conservation (Middle and Lower Reaches of Yangtze River), Ministry of Agriculture and Rural Affairs, Huazhong Agricultural University, Wuhan 430070, China
| | - Jianwei Lu
- Microelement Research Center/Key Laboratory of Arable Land Conservation (Middle and Lower Reaches of Yangtze River), Ministry of Agriculture and Rural Affairs, Huazhong Agricultural University, Wuhan 430070, China
| | - Lei Shi
- National Key Laboratory of Crop Genetic Improvement, Huazhong Agricultural University, Wuhan 430070, China
- Microelement Research Center/Key Laboratory of Arable Land Conservation (Middle and Lower Reaches of Yangtze River), Ministry of Agriculture and Rural Affairs, Huazhong Agricultural University, Wuhan 430070, China
| | - Fangsen Xu
- National Key Laboratory of Crop Genetic Improvement, Huazhong Agricultural University, Wuhan 430070, China
- Microelement Research Center/Key Laboratory of Arable Land Conservation (Middle and Lower Reaches of Yangtze River), Ministry of Agriculture and Rural Affairs, Huazhong Agricultural University, Wuhan 430070, China
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49
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Pan W, You Y, Weng YN, Shentu JL, Lu Q, Xu QR, Liu HJ, Du ST. Zn stress facilitates nitrate transporter 1.1-mediated nitrate uptake aggravating Zn accumulation in Arabidopsis plants. Ecotoxicol Environ Saf 2020; 190:110104. [PMID: 31884326 DOI: 10.1016/j.ecoenv.2019.110104] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/27/2019] [Revised: 12/15/2019] [Accepted: 12/18/2019] [Indexed: 05/21/2023]
Abstract
Describing the mechanisms of zinc (Zn) accumulation in plants is essential to counteract the effects of excessive Zn uptake in crops grown in contaminated soils. Increasing evidence suggests that there is a positive correlation between nitrate supply and Zn accumulation in plants. However, the role of the primary nitrate transporter NRT1.1 in Zn accumulation in plants remains unknown. In this study, a Zn stress-induced increase in nitrate uptake and an increase in NRT1.1 protein levels in wild-type (Col-0) Arabidopsis plants were measured using microelectrode ion flux and green fluorescent protein (GFP)/β-glucuronidase (GUS) staining, respectively. Both agar and hydroponic cultures showed that mutants lacking the NRT1.1 function in nrt1.1 and chl1-5 (chlorate resistant 1) exhibited lower Zn levels in the roots and shoots of Zn-stressed plants than the wild-type. A lack of NRT1.1 activity also alleviated Zn-induced photosynthetic damage and growth inhibition in plants. Further, we used a rotation system with synchronous or asynchronous uptakes of nitrate and Zn to demonstrate differences in Zn levels between the Col-0 and nrt1.1/chl1-5 mutants. Significantly lower difference in Zn levels were noted in the nitrate/Zn asynchronous treatment than in the nitrate/Zn synchronous treatment. From these results, it can be concluded that NRT1.1 modulates Zn accumulation in plants via a nitrate-dependent pathway.
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Affiliation(s)
- Wei Pan
- College of Environmental Science and Engineering, Zhejiang Gongshang University, Hangzhou, 310018, China
| | - Yue You
- College of Environmental Science and Engineering, Zhejiang Gongshang University, Hangzhou, 310018, China
| | - Yi-Neng Weng
- College of Environmental Science and Engineering, Zhejiang Gongshang University, Hangzhou, 310018, China
| | - Jia-Li Shentu
- College of Environmental Science and Engineering, Zhejiang Gongshang University, Hangzhou, 310018, China; Zhejiang Provincial Key Laboratory of Solid Waste Treatment and Recycling, Hangzhou, 310018, China; Instrumental Analysis Center of Zhejiang Gongshang University, Hangzhou, 310018, China
| | - Qi Lu
- College of Environmental Science and Engineering, Zhejiang Gongshang University, Hangzhou, 310018, China
| | - Qian-Ru Xu
- College of Environmental Science and Engineering, Zhejiang Gongshang University, Hangzhou, 310018, China
| | - Hui-Jun Liu
- College of Environmental Science and Engineering, Zhejiang Gongshang University, Hangzhou, 310018, China; Zhejiang Provincial Key Laboratory of Solid Waste Treatment and Recycling, Hangzhou, 310018, China; Instrumental Analysis Center of Zhejiang Gongshang University, Hangzhou, 310018, China
| | - Shao-Ting Du
- College of Environmental Science and Engineering, Zhejiang Gongshang University, Hangzhou, 310018, China; Zhejiang Provincial Key Laboratory of Solid Waste Treatment and Recycling, Hangzhou, 310018, China; Instrumental Analysis Center of Zhejiang Gongshang University, Hangzhou, 310018, China.
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50
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Luo B, Xu M, Zhao L, Xie P, Chen Y, Harwood W, Xu G, Fan X, Miller AJ. Overexpression of the High-Affinity Nitrate Transporter OsNRT2.3b Driven by Different Promoters in Barley Improves Yield and Nutrient Uptake Balance. Int J Mol Sci 2020; 21:E1320. [PMID: 32075298 PMCID: PMC7072886 DOI: 10.3390/ijms21041320] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/15/2020] [Revised: 02/07/2020] [Accepted: 02/13/2020] [Indexed: 11/29/2022] Open
Abstract
Improving nitrogen use efficiency (NUE) is very important for crops throughout the world. Rice mainly utilizes ammonium as an N source, but it also has four NRT2 genes involved in nitrate transport. The OsNRT2.3b transporter is important for maintaining cellular pH under mixed N supplies. Overexpression of this transporter driven by a ubiquitin promoter in rice greatly improved yield and NUE. This strategy for improving the NUE of crops may also be important for other cereals such as wheat and barley, which also face the challenges of nutrient uptake balance. To test this idea, we constructed transgenic barley lines overexpressing OsNRT2.3b. These transgenic barley lines overexpressing the rice transporter exhibited improved growth, yield, and NUE. We demonstrated that NRT2 family members and the partner protein HvNAR2.3 were also up-regulated by nitrate treatment (0.2 mM) in the transgenic lines. This suggests that the expression of OsNRT2.3b and other HvNRT2 family members were all up-regulated in the transgenic barley to increase the efficiency of N uptake and usage. We also compared the ubiquitin (Ubi) and a phloem-specific (RSs1) promoter-driven expression of OsNRT2.3b. The Ubi promoter failed to improve nutrient uptake balance, whereas the RSs1 promoter succeed in increasing the N, P, and Fe uptake balance. The nutrient uptake enhancement did not include Mn and Mg. Surprisingly, we found that the choice of promoter influenced the barley phenotype, not only increasing NUE and grain yield, but also improving nutrient uptake balance.
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Affiliation(s)
- Bingbing Luo
- State Key Laboratory of Crop Genetics and Germplasm Enhancement, Key Laboratory of Plant Nutrition and Fertilization in Low-Middle Reaches of the Yangtze River, Ministry of Agriculture, Nanjing Agricultural University, Nanjing 210095, China; (B.L.); (M.X.); (L.Z.); (P.X.); (G.X.)
| | - Man Xu
- State Key Laboratory of Crop Genetics and Germplasm Enhancement, Key Laboratory of Plant Nutrition and Fertilization in Low-Middle Reaches of the Yangtze River, Ministry of Agriculture, Nanjing Agricultural University, Nanjing 210095, China; (B.L.); (M.X.); (L.Z.); (P.X.); (G.X.)
| | - Limei Zhao
- State Key Laboratory of Crop Genetics and Germplasm Enhancement, Key Laboratory of Plant Nutrition and Fertilization in Low-Middle Reaches of the Yangtze River, Ministry of Agriculture, Nanjing Agricultural University, Nanjing 210095, China; (B.L.); (M.X.); (L.Z.); (P.X.); (G.X.)
| | - Peng Xie
- State Key Laboratory of Crop Genetics and Germplasm Enhancement, Key Laboratory of Plant Nutrition and Fertilization in Low-Middle Reaches of the Yangtze River, Ministry of Agriculture, Nanjing Agricultural University, Nanjing 210095, China; (B.L.); (M.X.); (L.Z.); (P.X.); (G.X.)
| | - Yi Chen
- Department of Metabolic Biology, John Innes Centre, Norwich Research Park, Norwich NR4 7UH, UK; (Y.C.); (W.H.)
| | - Wendy Harwood
- Department of Metabolic Biology, John Innes Centre, Norwich Research Park, Norwich NR4 7UH, UK; (Y.C.); (W.H.)
| | - Guohua Xu
- State Key Laboratory of Crop Genetics and Germplasm Enhancement, Key Laboratory of Plant Nutrition and Fertilization in Low-Middle Reaches of the Yangtze River, Ministry of Agriculture, Nanjing Agricultural University, Nanjing 210095, China; (B.L.); (M.X.); (L.Z.); (P.X.); (G.X.)
| | - Xiaorong Fan
- State Key Laboratory of Crop Genetics and Germplasm Enhancement, Key Laboratory of Plant Nutrition and Fertilization in Low-Middle Reaches of the Yangtze River, Ministry of Agriculture, Nanjing Agricultural University, Nanjing 210095, China; (B.L.); (M.X.); (L.Z.); (P.X.); (G.X.)
| | - Anthony J. Miller
- Department of Metabolic Biology, John Innes Centre, Norwich Research Park, Norwich NR4 7UH, UK; (Y.C.); (W.H.)
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