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Li G, Yang D, Hu Y, Xu J, Lu Z. Genome-Wide Identification and Expression Analysis of Nitrate Transporter (NRT) Gene Family in Eucalyptus grandis. Genes (Basel) 2024; 15:930. [PMID: 39062710 PMCID: PMC11275818 DOI: 10.3390/genes15070930] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/24/2024] [Revised: 07/10/2024] [Accepted: 07/15/2024] [Indexed: 07/28/2024] Open
Abstract
Eucalyptus grandis is an important planted hardwood tree worldwide with fast growth and good wood performance. The nitrate transporter (NRT) gene family is a major core involved in nitrogen (N) absorption and utilization in plants, but the comprehensive characterization of NRT genes in E. grandis remains mostly elusive. In this study, a total of 75 EgNRT genes were identified from the genome of E. grandis that were distributed unevenly across ten chromosomes, except Chr9. A phylogenetic analysis showed that the EgNRT proteins could be divided into three classes, namely NRT1, NRT2 and NRT3, which contained 69, 4 and 2 members, respectively. The cis-regulatory elements in the promoter regions of EgNRT genes were mainly involved in phytohormone and stress response. The transcriptome analysis indicated that the differentially expressed genes of leaf and root in E. grandis under different N supply conditions were mainly involved in the metabolic process and plant hormone signal transduction. In addition, the transcriptome-based and RT-qPCR analysis revealed that the expression of 13 EgNRT genes, especially EgNRT1.3, EgNRT1.38, EgNRT1.39 and EgNRT1.52, was significantly upregulated in the root under low-N-supply treatment, suggesting that those genes might play a critical role in root response to nitrate deficiency. Taken together, these results would provide valuable information for characterizing the roles of EgNRTs and facilitate the clarification of the molecular mechanism underlying EgNRT-mediated N absorption and distribution in E. grandis.
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Affiliation(s)
- Guangyou Li
- Key Laboratory of State Forestry and Grassland Administration on Tropical Forestry, Research Institute of Tropical Forestry, Chinese Academy of Forestry, Guangzhou 510520, China; (G.L.); (D.Y.); (J.X.)
| | - Deming Yang
- Key Laboratory of State Forestry and Grassland Administration on Tropical Forestry, Research Institute of Tropical Forestry, Chinese Academy of Forestry, Guangzhou 510520, China; (G.L.); (D.Y.); (J.X.)
| | - Yang Hu
- Xinhui Research Institute of Forestry Science, Jiangmen 529100, China;
| | - Jianmin Xu
- Key Laboratory of State Forestry and Grassland Administration on Tropical Forestry, Research Institute of Tropical Forestry, Chinese Academy of Forestry, Guangzhou 510520, China; (G.L.); (D.Y.); (J.X.)
| | - Zhaohua Lu
- Key Laboratory of State Forestry and Grassland Administration on Tropical Forestry, Research Institute of Tropical Forestry, Chinese Academy of Forestry, Guangzhou 510520, China; (G.L.); (D.Y.); (J.X.)
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2
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Xu N, Cheng L, Kong Y, Chen G, Zhao L, Liu F. Functional analyses of the NRT2 family of nitrate transporters in Arabidopsis. FRONTIERS IN PLANT SCIENCE 2024; 15:1351998. [PMID: 38501135 PMCID: PMC10944928 DOI: 10.3389/fpls.2024.1351998] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 12/07/2023] [Accepted: 02/06/2024] [Indexed: 03/20/2024]
Abstract
Nitrogen is an essential macronutrient for plant growth and development. Nitrate is the major form of nitrogen acquired by most crops and also serves as a vital signaling molecule. Nitrate is absorbed from the soil into root cells usually by the low-affinity NRT1 NO3 - transporters and high-affinity NRT2 NO3 - transporters, with NRT2s serving to absorb NO3 - under NO3 -limiting conditions. Seven NRT2 members have been identified in Arabidopsis, and they have been shown to be involved in various biological processes. In this review, we summarize the spatiotemporal expression patterns, localization, and biotic and abiotic responses of these transporters with a focus on recent advances in the current understanding of the functions of the seven AtNRT2 genes. This review offers beneficial insight into the mechanisms by which plants adapt to changing environmental conditions and provides a theoretical basis for crop research in the near future.
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Affiliation(s)
- Na Xu
- School of Biological Science, Jining Medical University, Rizhao, Shandong, China
| | - Li Cheng
- School of Biological Science, Jining Medical University, Rizhao, Shandong, China
| | - Yuan Kong
- School of Biological Science, Jining Medical University, Rizhao, Shandong, China
| | - Guiling Chen
- School of Biological Science, Jining Medical University, Rizhao, Shandong, China
| | - Lufei Zhao
- Agricultural Science and Engineering School, Liaocheng University, Liaocheng, Shandong, China
| | - Fei Liu
- School of Biological Science, Jining Medical University, Rizhao, Shandong, China
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3
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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] [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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4
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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] [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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Nazir F, Mahajan M, Khatoon S, Albaqami M, Ashfaque F, Chhillar H, Chopra P, Khan MIR. Sustaining nitrogen dynamics: A critical aspect for improving salt tolerance in plants. FRONTIERS IN PLANT SCIENCE 2023; 14:1087946. [PMID: 36909406 PMCID: PMC9996754 DOI: 10.3389/fpls.2023.1087946] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 11/02/2022] [Accepted: 02/09/2023] [Indexed: 06/18/2023]
Abstract
In the current changing environment, salt stress has become a major concern for plant growth and food production worldwide. Understanding the mechanisms of how plants function in saline environments is critical for initiating efforts to mitigate the detrimental effects of salt stress. Agricultural productivity is linked to nutrient availability, and it is expected that the judicious metabolism of mineral nutrients has a positive impact on alleviating salt-induced losses in crop plants. Nitrogen (N) is a macronutrient that contributes significantly to sustainable agriculture by maintaining productivity and plant growth in both optimal and stressful environments. Significant progress has been made in comprehending the fundamental physiological and molecular mechanisms associated with N-mediated plant responses to salt stress. This review provided an (a) overview of N-sensing, transportation, and assimilation in plants; (b) assess the salt stress-mediated regulation of N dynamics and nitrogen use- efficiency; (c) critically appraise the role of N in plants exposed to salt stress. Furthermore, the existing but less explored crosstalk between N and phytohormones has been discussed that may be utilized to gain a better understanding of plant adaptive responses to salt stress. In addition, the shade of a small beam of light on the manipulation of N dynamics through genetic engineering with an aim of developing salt-tolerant plants is also highlighted.
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Affiliation(s)
- Faroza Nazir
- Department of Botany, Jamia Hamdard, New Delhi, India
| | - Moksh Mahajan
- Department of Botany, Jamia Hamdard, New Delhi, India
| | | | - Mohammed Albaqami
- Department of Botany and Microbiology, College of Science, King Saud University, Riyadh, Saudi Arabia
| | - Farha Ashfaque
- Department of Botany, Aligarh Muslim University, Aligarh, India
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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] [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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7
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Genome-Wide Characterization of High-Affinity Nitrate Transporter 2 (NRT2) Gene Family in Brassica napus. Int J Mol Sci 2022; 23:ijms23094965. [PMID: 35563356 PMCID: PMC9104966 DOI: 10.3390/ijms23094965] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/07/2022] [Revised: 04/25/2022] [Accepted: 04/28/2022] [Indexed: 12/04/2022] Open
Abstract
Nitrate transporter 2 (NRT2) plays an essential role in Nitrogen (N) uptake, transport, utilization, and stress resistance. In this study, the NRT2 gene family in two sequenced Brassica napus ecotypes were identified, including 31 genes in ‘Zhongshuang11’ (BnaZSNRT2s) and 19 in ‘Darmor-bzh’ (BnaDarNRT2s). The candidate genes were divided into three groups (Group I−III) based on phylogenetic analyses, supported by a conserved intron-exon structure in each group. Collinearity analysis revealed that the large expansion of BnaZSNRT2s attributed to allopolyploidization of ancestors Brassica rapa and Brassica oleracea, and small-scale duplication events in B. napus. Transcription factor (TF) binding site prediction, cis-element analysis, and microRNA prediction suggested that the expressions of BnaZSNRT2s are regulated by multiple factors, and the regulatory pattern is relatively conserved in each group and is tightly connected between groups. Expression assay showed the diverse and differentiated spatial-temporal expression profiles of BnaZSNRT2s in Group I, but conserved patterns were observed in Group II/III; and the low nitrogen (LN) stress up-regulated expression profiles were presented in Group I−III, based on RNA-seq data. RT-qPCR analyses confirmed that BnaZSNRT2.5A-1 and BnaZSNRT2.5C-1 in Group II were highly up-regulated under LN stress in B. napus roots. Our results offer valid information and candidates for further functional BnaZSNRT2s studies.
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Wang Z, Ni L, Liu D, Fu Z, Hua J, Lu Z, Liu L, Yin Y, Li H, Gu C. Genome-Wide Identification and Characterization of NAC Family in Hibiscus hamabo Sieb. et Zucc. under Various Abiotic Stresses. Int J Mol Sci 2022; 23:3055. [PMID: 35328474 PMCID: PMC8949087 DOI: 10.3390/ijms23063055] [Citation(s) in RCA: 7] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/28/2022] [Revised: 03/02/2022] [Accepted: 03/09/2022] [Indexed: 12/31/2022] Open
Abstract
NAC transcription factor is one of the largest plant gene families, participating in the regulation of plant biological and abiotic stresses. In this study, 182 NAC proteins (HhNACs) were identified based on genomic datasets of Hibiscus hamabo Sieb. et Zucc (H. hamabo). These proteins were divided into 19 subfamilies based on their phylogenetic relationship, motif pattern, and gene structure analysis. Expression analysis with RNA-seq revealed that most HhNACs were expressed in response to drought and salt stress. Research of quantitative real-time PCR analysis of nine selected HhNACs supported the transcriptome data's dependability and suggested that HhNAC54 was significantly upregulated under multiple abiotic stresses. Overexpression of HhNAC54 in Arabidopsis thaliana (A. thaliana) significantly increased its tolerance to salt. This study provides a basis for a comprehensive analysis of NAC transcription factor and insight into the abiotic stress response mechanism in H. hamabo.
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Affiliation(s)
- Zhiquan Wang
- Institute of Botany, Jiangsu Province and Chinese Academy of Sciences, Nanjing 210014, China; (Z.W.); (J.H.); (Z.L.); (L.L.); (Y.Y.)
| | - Longjie Ni
- College of Forest Sciences, Nanjing Forestry University, Nanjing 210037, China; (L.N.); (D.L.); (Z.F.); (H.L.)
| | - Dina Liu
- College of Forest Sciences, Nanjing Forestry University, Nanjing 210037, China; (L.N.); (D.L.); (Z.F.); (H.L.)
| | - Zekai Fu
- College of Forest Sciences, Nanjing Forestry University, Nanjing 210037, China; (L.N.); (D.L.); (Z.F.); (H.L.)
| | - Jianfeng Hua
- Institute of Botany, Jiangsu Province and Chinese Academy of Sciences, Nanjing 210014, China; (Z.W.); (J.H.); (Z.L.); (L.L.); (Y.Y.)
- Jiangsu Key Laboratory for the Research and Utilization of Plant Resources, Jiangsu Provincial Platform for Conservation and Utilization of Agricultural Germplasm, Nanjing 210014, China
| | - Zhiguo Lu
- Institute of Botany, Jiangsu Province and Chinese Academy of Sciences, Nanjing 210014, China; (Z.W.); (J.H.); (Z.L.); (L.L.); (Y.Y.)
- Jiangsu Key Laboratory for the Research and Utilization of Plant Resources, Jiangsu Provincial Platform for Conservation and Utilization of Agricultural Germplasm, Nanjing 210014, China
| | - Liangqin Liu
- Institute of Botany, Jiangsu Province and Chinese Academy of Sciences, Nanjing 210014, China; (Z.W.); (J.H.); (Z.L.); (L.L.); (Y.Y.)
- Jiangsu Key Laboratory for the Research and Utilization of Plant Resources, Jiangsu Provincial Platform for Conservation and Utilization of Agricultural Germplasm, Nanjing 210014, China
| | - Yunlong Yin
- Institute of Botany, Jiangsu Province and Chinese Academy of Sciences, Nanjing 210014, China; (Z.W.); (J.H.); (Z.L.); (L.L.); (Y.Y.)
- Jiangsu Key Laboratory for the Research and Utilization of Plant Resources, Jiangsu Provincial Platform for Conservation and Utilization of Agricultural Germplasm, Nanjing 210014, China
| | - Huogen Li
- College of Forest Sciences, Nanjing Forestry University, Nanjing 210037, China; (L.N.); (D.L.); (Z.F.); (H.L.)
| | - Chunsun Gu
- Institute of Botany, Jiangsu Province and Chinese Academy of Sciences, Nanjing 210014, China; (Z.W.); (J.H.); (Z.L.); (L.L.); (Y.Y.)
- College of Forest Sciences, Nanjing Forestry University, Nanjing 210037, China; (L.N.); (D.L.); (Z.F.); (H.L.)
- Jiangsu Key Laboratory for the Research and Utilization of Plant Resources, Jiangsu Provincial Platform for Conservation and Utilization of Agricultural Germplasm, Nanjing 210014, China
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Comparing the Effects of N and P Deficiency on Physiology and Growth for Fast- and Slow-Growing Provenances of Fraxinus mandshurica. FORESTS 2021. [DOI: 10.3390/f12121760] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
Abstract
With the continuous increase in atmospheric carbon dioxide emissions, nitrogen (N) and phosphorus (P) as mineral elements increasingly restrict plant growth. To explore the effect of deficiency of P and N on growth and physiology, Fraxinus mandshurica (hereafter “F. mandshurica”) Rupr. annual seedlings of Wuchang (WC) provenance with fast growth and Dailing (DL) provenance with slow growth were treated with complete nutrition or starvation of N (N-), P (P-) or both elements (NP-). Although P- and N- increased the use efficiency of P (PUE) and N (NUE), respectively, they reduced the leaf area, chlorophyll content and activities of N assimilation enzymes (NR, GS, GOGAT), which decreased the dry weight and P or N amount. The free amino acid content and activities of Phosphoenolpyruvate carboxylase (PEPC) and acid phosphatase enzymes were reduced by N-. The transcript levels of NRT2.1, NRT2.4, NRT2.5, NRT2.7, AVT1, AAP3, NIA2, PHT1-3, PHT1-4 and PHT2-1 in roots were increased, but those of NRT2.1, NRT2.4, NRT2.5, PHT1-3, PHT1-4, PHT2-1 and AAP3 in leaves were reduced by P-. WC was significantly greater than DL under P- in dry weight, C amount, N amount, leaf area, PUE, NUE, which related to greater chlorophyll content, PEPC enzyme activity, N assimilation enzyme activities, and transcript levels of N and P transporter genes in roots and foliage, indicating a greater ability of WC to absorb, transport and utilize N and P under P-. WC was also greater than DL under N- in terms of the above indicators except the transcript levels of N and P assimilation genes, but most of the indicators did not reach a significant level, indicating that WC might be more tolerant to N- than DL, which requires further verification. In summary, WC was identified as a P-efficient provenance, as the growth rate was greater for the genetic type with high than low tolerance to P-.
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Molecular Regulatory Networks for Improving Nitrogen Use Efficiency in Rice. Int J Mol Sci 2021; 22:ijms22169040. [PMID: 34445746 PMCID: PMC8396546 DOI: 10.3390/ijms22169040] [Citation(s) in RCA: 12] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/22/2021] [Revised: 08/15/2021] [Accepted: 08/17/2021] [Indexed: 11/17/2022] Open
Abstract
Nitrogen is an important factor limiting the growth and yield of rice. However, the excessive application of nitrogen will lead to water eutrophication and economic costs. To create rice varieties with high nitrogen use efficiency (NUE) has always been an arduous task in rice breeding. The processes for improving NUE include nitrogen uptake, nitrogen transport from root to shoot, nitrogen assimilation, and nitrogen redistribution, with each step being indispensable to the improvement of NUE. Here, we summarize the effects of absorption, transport, and metabolism of nitrate, ammonium, and amino acids on NUE, as well as the role of hormones in improving rice NUE. Our discussion provide insight for further research in the future.
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Li Z, Feng J, Yang S, Meng P, Li J, Li H, Gao X, Zhang Y. Lipopolysaccharide-induced inflammation in human peritoneal mesothelial cells is controlled by ERK1/2-CDK5-PPARγ axis. ANNALS OF TRANSLATIONAL MEDICINE 2021; 9:850. [PMID: 34164484 PMCID: PMC8184493 DOI: 10.21037/atm-21-1623] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
Abstract
Background Peritonitis is a common complication in which the peritoneum becomes inflamed. Peroxisome proliferator-activated receptor (PPAR)γ agonists and extracellular signal-regulated kinases 1/2 (ERK1/2) inactivation have been found to restore damage caused by lipopolysaccharide-induced (LPS) inflammation. This study aimed to investigate the association between PPARγ and ERK1/2 in LPS-induced inflammation in peritonitis. Methods Human peritoneal mesothelial cells were maintained in Dulbecco’s Modified Eagle Medium and treated with LPS under a series of different concentrations and treatment times. Cellular interleukins-1βeta (IL-1β), cellular interleukins-6 (IL-6), cellular interleukins-12 (IL-12) were measured by enzyme-linked immunosorbent assay (ELISA) assay. Expression or activation of cyclin-dependent kinase (CDK)5, ERK1/2, and PPARγ was detected using quantitative real-time PCR and/or western blot. Results LPS induced dose- and time-dependent increments in the cellular IL-1β, IL-6, and IL-12 contents, cyclin-dependent kinase 5 (CDK5) expression, and PPARγSer273 phosphorylation. Treatment with 1 µg/mL LPS for 12 hours was the optimal experimental design for inflammation stimulation. The concentration of LPS over 1 µg/mL or treatment more than 12 hours reduced the inflammatory status. LPS stimulation also activated ERK1/2 and increased its interaction with CDK5. Further, ERK1/2 inhibition by AZD0364 prevented IL-1β, IL-6, IL-12, and CDK5 expression, as well as activation of ERK1/2 and phosphorylation of PPARγ, induced by LPS. Knockdown of CDK5 using its siRNA caused similar changes as AZD0364, minus ERK1/2 inactivation. Conclusions Our results suggested that LPS-induced inflammation in human peritoneal mesothelial cells can be partly suppressed by inhibiting the ERK1/2/CDK5/PPARγ axis.
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Affiliation(s)
- Zukai Li
- The Third School of Clinical Medicine, Southern Medical University, Guangzhou, China
| | - Junxia Feng
- The Central Laboratory, Affiliated Huadu Hospital, Southern Medical University (People's Hospital of Huadu District), Guangzhou, China
| | - Shen Yang
- Department of Nephrology, Affiliated Huadu Hospital, Southern Medical University (People's Hospital of Huadu District), Guangzhou, China
| | - Ping Meng
- The Central Laboratory, Affiliated Huadu Hospital, Southern Medical University (People's Hospital of Huadu District), Guangzhou, China
| | - Jingchun Li
- The Central Laboratory, Affiliated Huadu Hospital, Southern Medical University (People's Hospital of Huadu District), Guangzhou, China
| | - Hongyan Li
- Department of Nephrology, Affiliated Huadu Hospital, Southern Medical University (People's Hospital of Huadu District), Guangzhou, China
| | - Xuejuan Gao
- Key Laboratory of Functional Protein Research of Guangdong Higher Education Institutes and MOE Key Laboratory of Tumor Molecular Biology, Institute of Life and Health Engineering, Jinan University, Guangzhou, China
| | - Yunfang Zhang
- Department of Nephrology, Affiliated Huadu Hospital, Southern Medical University (People's Hospital of Huadu District), Guangzhou, China
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12
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Wang X, Cai X, Xu C, Wang Q. Identification and characterization of the NPF, NRT2 and NRT3 in spinach. PLANT PHYSIOLOGY AND BIOCHEMISTRY : PPB 2021; 158:297-307. [PMID: 33243709 DOI: 10.1016/j.plaphy.2020.11.017] [Citation(s) in RCA: 7] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/20/2020] [Accepted: 11/12/2020] [Indexed: 06/11/2023]
Abstract
Nitrate transporters (NRTs) participate in nitrate uptake, transport and allocation within the plant. However, this gene family has not been studied thoroughly in spinach. This study provided the general information about spinach SoNRTs and their transcriptional and functional responses to different levels of nitrate supplies. Resultes showed that fifty-seven NPF (also known as NRT1), nine NRT2 and one NRT3 were identified in spinach homologous to characterized Arabidopsis NRT genes. Phylogenetic analysis organized the SoNRT family into three clades: NPF with three subclades, NRT2, and NRT3. The tested SoNRT genes showed the various expression profiles in relation to tissue specificity and nitrate supply, indicating their functional diversity in response to external nitrate supply. Among them, transgenic Arabidopsis plants overexpressing SoNPF30 showed improved biomass, decreased shoot nitrate contents but no significant difference of 15NO3- uptake rates when compared with those of the wild type in response to high N treatment. Under low N treatment, overexpressing of SoNRT3 significantly increased whole plant biomass, root nitrate contents and 15NO3- uptake rates. These demonstrated that SoNPF30 and SoNRT3 confer greater capacity for nitrate translocation or nitrate uptake, and could help to improve the ability of plant nitrogen utilization under those conditions. Our findings provide a valuable basis for future research on this family of genes in spinach.
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Affiliation(s)
- Xiaoli Wang
- Shanghai Engineering Research Center of Plant Germplasm Resources, College of Life Sciences, Shanghai Normal University, Shanghai, 200234, China.
| | - Xiaofeng Cai
- Shanghai Engineering Research Center of Plant Germplasm Resources, College of Life Sciences, Shanghai Normal University, Shanghai, 200234, China
| | - Chenxi Xu
- Shanghai Engineering Research Center of Plant Germplasm Resources, College of Life Sciences, Shanghai Normal University, Shanghai, 200234, China
| | - Quanhua Wang
- Shanghai Engineering Research Center of Plant Germplasm Resources, College of Life Sciences, Shanghai Normal University, Shanghai, 200234, China.
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13
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Identification of Differentially Expressed Drought-Responsive Genes in Guar [ Cyamopsis tetragonoloba (L.) Taub]. Int J Genomics 2020; 2020:4147615. [PMID: 33344629 PMCID: PMC7732403 DOI: 10.1155/2020/4147615] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/25/2020] [Accepted: 11/20/2020] [Indexed: 11/17/2022] Open
Abstract
Drought remains one of the most serious environmental stresses because of the continuous reduction in soil moisture, which requires the improvement of crops with features such as drought tolerance. Guar [Cyamopsis tetragonoloba (L.) Taub], a forage and industrial crop, is a nonthirsty plant. However, the information on the transcriptome changes that occur under drought stress in guar is very limited; therefore, a gene expression analysis is necessary in this context. Here, we studied the differentially expressed genes (DEGs) in response to drought stress and their metabolic pathways. RNA-Seq via an expectation-maximization algorithm was used to estimate gene abundance. Subsequently, an Empirical Analysis of Digital Gene Expression Data in the R Bioconductor package was used to identify DEGs. Blast2GO, InterProScan, and the Kyoto Encyclopedia of Genes and Genomes were used to explore functional annotation, protein analysis, enzymes, and metabolic pathways. Transcription factors were identified using the PlantTFDB database. Our study identified 499 upregulated and 191 downregulated genes in response to drought stress. Of those, 32 upregulated and six downregulated genes were deemed as novel genes exclusive to guar. An aggregate of 137 protein families, 306 domains, 12 repeats, and two sites were upregulated. The proton-dependent oligopeptide transporter family and transferase, aquaporin transporter, calcium/calmodulin-dependent/calcium-dependent protein kinase, aspartic peptidase A1 family, UDP-glucuronosyl/UDP-glucosyltransferase, and major intrinsic protein were the most upregulated protein families. The upregulated unigenes were associated with 88 enzymes and 77 KEGG pathways. Finally, the MYB-related, MYB, and ERF transcription factor families were upregulated. These data may be useful for understanding the plant molecular response to drought stress.
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Valkov VT, Sol S, Rogato A, Chiurazzi M. The functional characterization of LjNRT2.4 indicates a novel, positive role of nitrate for an efficient nodule N 2 -fixation activity. THE NEW PHYTOLOGIST 2020; 228:682-696. [PMID: 32542646 DOI: 10.1111/nph.16728] [Citation(s) in RCA: 23] [Impact Index Per Article: 5.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/11/2020] [Accepted: 05/27/2020] [Indexed: 05/25/2023]
Abstract
Atmospheric nitrogen (N2) -fixing nodules are formed on the roots of legume plants as result of the symbiotic interaction with rhizobia. Nodule functioning requires high amounts of carbon and energy, and therefore legumes have developed finely tuned mechanisms to cope with changing external environmental conditions, including nutrient availability and flooding. The investigation of the role of nitrate as regulator of the symbiotic N2 fixation has been limited to the inhibitory effects exerted by high external concentrations on nodule formation, development and functioning. We describe a nitrate-dependent route acting at low external concentrations that become crucial in hydroponic conditions to ensure an efficient nodule functionality. Combined genetic, biochemical and molecular studies are used to unravel the novel function of the LjNRT2.4 gene. Two independent null mutants are affected by the nitrate content of nodules, consistent with LjNRT2.4 temporal and spatial profiles of expression. The reduced nodular nitrate content is associated to a strong reduction of nitrogenase activity and a severe N-starvation phenotype observed under hydroponic conditions. We also report the effects of the mutations on the nodular nitric oxide (NO) production and content. We discuss the involvement of LjNRT2.4 in a nitrate-NO respiratory chain taking place in the N2 -fixing nodules.
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Affiliation(s)
- Vladimir Totev Valkov
- Institute of Biosciences and Bioresources, IBBR, CNR, Via P. Castellino 111, Napoli, 80131, Italy
| | - Stefano Sol
- Institute of Biosciences and Bioresources, IBBR, CNR, Via P. Castellino 111, Napoli, 80131, Italy
| | - Alessandra Rogato
- Institute of Biosciences and Bioresources, IBBR, CNR, Via P. Castellino 111, Napoli, 80131, Italy
| | - Maurizio Chiurazzi
- Institute of Biosciences and Bioresources, IBBR, CNR, Via P. Castellino 111, Napoli, 80131, Italy
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15
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Li W, He X, Chen Y, Jing Y, Shen C, Yang J, Teng W, Zhao X, Hu W, Hu M, Li H, Miller AJ, Tong Y. A wheat transcription factor positively sets seed vigour by regulating the grain nitrate signal. THE NEW PHYTOLOGIST 2020; 225:1667-1680. [PMID: 31581317 PMCID: PMC7004088 DOI: 10.1111/nph.16234] [Citation(s) in RCA: 32] [Impact Index Per Article: 8.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/11/2019] [Accepted: 09/22/2019] [Indexed: 05/12/2023]
Abstract
Seed vigour and early establishment are important factors determining the yield of crops. A wheat nitrate-inducible NAC transcription factor, TaNAC2, plays a critical role in promoting crop growth and nitrogen use efficiency (NUE), and now its role in seed vigour is revealed. A TaNAC2 regulated gene was identified that is a NRT2-type nitrate transporter TaNRT2.5 with a key role in seed vigour. Overexpressing TaNAC2-5A increases grain nitrate concentration and seed vigour by directly binding to the promoter of TaNRT2.5-3B and positively regulating its expression. TaNRT2.5 is expressed in developing grain, particularly the embryo and husk. In Xenopus oocyte assays TaNRT2.5 requires a partner protein TaNAR2.1 to give nitrate transport activity, and the transporter locates to the tonoplast in a tobacco leaf transient expression system. Furthermore, in the root TaNRT2.5 and TaNRT2.1 function in post-anthesis acquisition of soil nitrate. Overexpression of TaNRT2.5-3B increases seed vigour, grain nitrate concentration and yield, whereas RNA interference of TaNRT2.5 has the opposite effects. The TaNAC2-NRT2.5 module has a key role in regulating grain nitrate accumulation and seed vigour. Both genes can potentially be used to improve grain yield and NUE in wheat.
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Affiliation(s)
- Wenjing Li
- The State Key Laboratory for Plant Cell and Chromosome EngineeringInstitute of Genetics and Developmental BiologyThe Innovative Academy of Seed DesignChinese Academy of SciencesBeijing100101China
- University of Chinese Academy of SciencesBeijing100049China
- CAS‐JIC Centre of Excellence for Plant and Microbial Science (CEPAMS)Shanghai Institutes for Biological SciencesChinese Academy of Sciences (CAS)Shanghai200032China
| | - Xue He
- The State Key Laboratory for Plant Cell and Chromosome EngineeringInstitute of Genetics and Developmental BiologyThe Innovative Academy of Seed DesignChinese Academy of SciencesBeijing100101China
- CAS‐JIC Centre of Excellence for Plant and Microbial Science (CEPAMS)Shanghai Institutes for Biological SciencesChinese Academy of Sciences (CAS)Shanghai200032China
| | - Yi Chen
- CAS‐JIC Centre of Excellence for Plant and Microbial Science (CEPAMS)Shanghai Institutes for Biological SciencesChinese Academy of Sciences (CAS)Shanghai200032China
- Department of Metabolic BiologyJohn Innes CentreNorwich Research ParkNorwichNR4 7UHUK
| | - Yanfu Jing
- The State Key Laboratory for Plant Cell and Chromosome EngineeringInstitute of Genetics and Developmental BiologyThe Innovative Academy of Seed DesignChinese Academy of SciencesBeijing100101China
- University of Chinese Academy of SciencesBeijing100049China
| | - Chuncai Shen
- The State Key Laboratory for Plant Cell and Chromosome EngineeringInstitute of Genetics and Developmental BiologyThe Innovative Academy of Seed DesignChinese Academy of SciencesBeijing100101China
- University of Chinese Academy of SciencesBeijing100049China
| | - Junbo Yang
- The State Key Laboratory for Plant Cell and Chromosome EngineeringInstitute of Genetics and Developmental BiologyThe Innovative Academy of Seed DesignChinese Academy of SciencesBeijing100101China
- University of Chinese Academy of SciencesBeijing100049China
| | - Wan Teng
- The State Key Laboratory for Plant Cell and Chromosome EngineeringInstitute of Genetics and Developmental BiologyThe Innovative Academy of Seed DesignChinese Academy of SciencesBeijing100101China
| | - Xueqiang Zhao
- The State Key Laboratory for Plant Cell and Chromosome EngineeringInstitute of Genetics and Developmental BiologyThe Innovative Academy of Seed DesignChinese Academy of SciencesBeijing100101China
| | - Weijuan Hu
- The State Key Laboratory for Plant Cell and Chromosome EngineeringInstitute of Genetics and Developmental BiologyThe Innovative Academy of Seed DesignChinese Academy of SciencesBeijing100101China
| | - Mengyun Hu
- The Institute for Cereal and Oil CropsHebei Academy of Agriculture and Forestry SciencesShijiazhuang050035China
| | - Hui Li
- The Institute for Cereal and Oil CropsHebei Academy of Agriculture and Forestry SciencesShijiazhuang050035China
| | - Anthony J. Miller
- CAS‐JIC Centre of Excellence for Plant and Microbial Science (CEPAMS)Shanghai Institutes for Biological SciencesChinese Academy of Sciences (CAS)Shanghai200032China
- Department of Metabolic BiologyJohn Innes CentreNorwich Research ParkNorwichNR4 7UHUK
| | - Yiping Tong
- The State Key Laboratory for Plant Cell and Chromosome EngineeringInstitute of Genetics and Developmental BiologyThe Innovative Academy of Seed DesignChinese Academy of SciencesBeijing100101China
- CAS‐JIC Centre of Excellence for Plant and Microbial Science (CEPAMS)Shanghai Institutes for Biological SciencesChinese Academy of Sciences (CAS)Shanghai200032China
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16
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Gu C, Liu L, Song A, Liu Z, Zhang Y, Huang S. Iris lactea var. chinensis (Fisch.) cysteine-rich gene llCDT1 enhances cadmium tolerance in yeast cells and Arabidopsis thaliana. ECOTOXICOLOGY AND ENVIRONMENTAL SAFETY 2018; 157:67-72. [PMID: 29605645 DOI: 10.1016/j.ecoenv.2018.03.059] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/19/2018] [Revised: 03/15/2018] [Accepted: 03/23/2018] [Indexed: 06/08/2023]
Abstract
UNLABELLED IlCDT1, a cysteine-rich protein, was isolated from Iris lactea var. chinensis (Fisch.) (I. lactea var. chinensis). Its transcription was up-regulated by the exogenous application of Cd. The truncated IlCDT1 (25-54) containing 14 Cys residues confers Cd tolerance to yeast as the intact IlCDT1, indicating that Cys residues are required for Cd tolerance presumably by chelating Cd. When the gene was constitutively expressed in A. thaliana, root length of transgenic lines was longer than that of wild-type under 100 μM or 200 μM Cd stress. However, Cd absorption in wild-type was more than in two trangenic lines under 100 μM Cd exposure. IlCDT1 may directly bind Cd, through chelating Cd and avoiding the Cd uptake into the cells. Together, IlCDT1 may be a promising gene for the Cd tolerance improvement. SUMMARY Cysteine-rich gene llCDT1 enhances cadmium tolerance in yeast cells and Arabidopsis thaliana.
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Affiliation(s)
- Chunsun Gu
- Jiangsu Key Laboratory for the Research and Utilization of Plant Resources, Institute of Botany, Jiangsu Province and Chinese Academy of Sciences, Nanjing 210014, China.
| | - Liangqin Liu
- College of Horticulture, Nanjing Agricultural University, Nanjing 210014, China
| | - Aiping Song
- College of Horticulture, Nanjing Agricultural University, Nanjing 210014, China
| | - Zhaolei Liu
- College of Horticulture, Nanjing Agricultural University, Nanjing 210014, China
| | - Yongxia Zhang
- Jiangsu Key Laboratory for the Research and Utilization of Plant Resources, Institute of Botany, Jiangsu Province and Chinese Academy of Sciences, Nanjing 210014, China
| | - Suzhen Huang
- Jiangsu Key Laboratory for the Research and Utilization of Plant Resources, Institute of Botany, Jiangsu Province and Chinese Academy of Sciences, Nanjing 210014, China
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17
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Li Y, Li J, Yan Y, Liu W, Zhang W, Gao L, Tian Y. Knock-Down of CsNRT2.1, a Cucumber Nitrate Transporter, Reduces Nitrate Uptake, Root length, and Lateral Root Number at Low External Nitrate Concentration. FRONTIERS IN PLANT SCIENCE 2018; 9:722. [PMID: 29911677 PMCID: PMC5992502 DOI: 10.3389/fpls.2018.00722] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/28/2018] [Accepted: 05/14/2018] [Indexed: 05/08/2023]
Abstract
Nitrogen (N) is a macronutrient that plays a crucial role in plant growth and development. Nitrate ( NO 3 - ) is the most abundant N source in aerobic soils. Plants have evolved two adaptive mechanisms such as up-regulation of the high-affinity transport system (HATS) and alteration of the root system architecture (RSA), allowing them to cope with the temporal and spatial variation of NO 3 - . However, little information is available regarding the nitrate transporter in cucumber, one of the most important fruit vegetables in the world. In this study we isolated a nitrate transporter named CsNRT2.1 from cucumber. Analysis of the expression profile of the CsNRT2.1 showed that CsNRT2.1 is a high affinity nitrate transporter which mainly located in mature roots. Subcellular localization analysis revealed that CsNRT2.1 is a plasma membrane transporter. In N-starved CsNRT2.1 knock-down plants, both of the constitutive HATS (cHATS) and inducible HATS (iHATS) were impaired under low external NO 3 - concentration. Furthermore, the CsNRT2.1 knock-down plants showed reduced root length and lateral root numbers. Together, our results demonstrated that CsNRT2.1 played a dual role in regulating the HATS and RSA to acquire NO 3 - effectively under N limitation.
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Affiliation(s)
- Yang Li
- Beijing Key Laboratory of Growth and Developmental Regulation for Protected Vegetable Crops, College of Horticulture, China Agricultural University, Beijing, China
| | - Juanqi Li
- College of Horticulture, Henan Agricultural University, Zhengzhou, China
| | - Yan Yan
- Beijing Key Laboratory of Growth and Developmental Regulation for Protected Vegetable Crops, College of Horticulture, China Agricultural University, Beijing, China
| | - Wenqian Liu
- Beijing Key Laboratory of Growth and Developmental Regulation for Protected Vegetable Crops, College of Horticulture, China Agricultural University, Beijing, China
| | - Wenna Zhang
- Beijing Key Laboratory of Growth and Developmental Regulation for Protected Vegetable Crops, College of Horticulture, China Agricultural University, Beijing, China
| | - Lihong Gao
- Beijing Key Laboratory of Growth and Developmental Regulation for Protected Vegetable Crops, College of Horticulture, China Agricultural University, Beijing, China
| | - Yongqiang Tian
- Beijing Key Laboratory of Growth and Developmental Regulation for Protected Vegetable Crops, College of Horticulture, China Agricultural University, Beijing, China
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18
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Gu C, Xu S, Wang Z, Liu L, Zhang Y, Deng Y, Huang S. De novo sequencing, assembly, and analysis of Iris lactea var. chinensis roots' transcriptome in response to salt stress. PLANT PHYSIOLOGY AND BIOCHEMISTRY : PPB 2018; 125:1-12. [PMID: 29413626 DOI: 10.1016/j.plaphy.2018.01.019] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/14/2017] [Accepted: 01/22/2018] [Indexed: 06/08/2023]
Abstract
As a halophyte, Iris lactea var. chinensis (I. lactea var. chinensis) is widely distributed and has good drought and heavy metal resistance. Moreover, it is an excellent ornamental plant. I. lactea var. chinensis has extensive application prospects owing to the global impacts of salinization. To better understand its molecular mechanism involved in salt resistance, the de novo sequencing, assembly, and analysis of I. lactea var. chinensis roots' transcriptome in response to salt-stress conditions was performed. On average, 74.17% of the clean reads were mapped to unigenes. A total of 121,093 unigenes were constructed and 56,398 (46.57%) were annotated. Among these, 13,522 differentially expressed genes (DEGs) were identified between salt-treated and control samples Compared to the transcriptional level of control, 7037 DEGs were up-regulated and 6539 down-regulated. In addition, 129 up-regulated and 1609 down-regulated genes were simultaneously detected in all three pairwise comparisons between control and salt-stressed libraries. At least 247 and 250 DEGs encoding transcription factors and transporter proteins were identified. Meanwhile, 130 DEGs regarding reactive oxygen species (ROS) scavenging system were also summarized. Based on real-time quantitative RT-PCR, we verified the changes in the expression patterns of 10 unigenes. Our study identified potential salt-responsive candidate genes and increased the understanding of halophyte responses to salinity stress.
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Affiliation(s)
- Chunsun Gu
- Jiangsu Key Laboratory for Bioresources of Saline Solis, Jiangsu Provincial Platform for Conservation and Utilization of Agricultural Germplasm, Institute of Botany, Jiangsu Province and Chinese Academy of Sciences, Nanjing, 210014, China.
| | - Sheng Xu
- Jiangsu Key Laboratory for Bioresources of Saline Solis, Jiangsu Provincial Platform for Conservation and Utilization of Agricultural Germplasm, Institute of Botany, Jiangsu Province and Chinese Academy of Sciences, Nanjing, 210014, China
| | - Zhiquan Wang
- Jiangsu Key Laboratory for Bioresources of Saline Solis, Jiangsu Provincial Platform for Conservation and Utilization of Agricultural Germplasm, Institute of Botany, Jiangsu Province and Chinese Academy of Sciences, Nanjing, 210014, China
| | - Liangqin Liu
- Jiangsu Key Laboratory for Bioresources of Saline Solis, Jiangsu Provincial Platform for Conservation and Utilization of Agricultural Germplasm, Institute of Botany, Jiangsu Province and Chinese Academy of Sciences, Nanjing, 210014, China
| | - Yongxia Zhang
- Jiangsu Key Laboratory for Bioresources of Saline Solis, Jiangsu Provincial Platform for Conservation and Utilization of Agricultural Germplasm, Institute of Botany, Jiangsu Province and Chinese Academy of Sciences, Nanjing, 210014, China
| | - Yanming Deng
- Institute of Leisure Agriculture, Jiangsu Academy of Agricultural Sciences, Nanjing 210014, China
| | - Suzhen Huang
- Jiangsu Key Laboratory for Bioresources of Saline Solis, Jiangsu Provincial Platform for Conservation and Utilization of Agricultural Germplasm, Institute of Botany, Jiangsu Province and Chinese Academy of Sciences, Nanjing, 210014, China
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19
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Gu CS, Liu LQ, Deng YM, Zhang YX, Wang ZQ, Yuan HY, Huang SZ. De novo characterization of the Iris lactea var. chinensis transcriptome and an analysis of genes under cadmium or lead exposure. ECOTOXICOLOGY AND ENVIRONMENTAL SAFETY 2017; 144:507-513. [PMID: 28675864 DOI: 10.1016/j.ecoenv.2017.06.071] [Citation(s) in RCA: 17] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/03/2017] [Revised: 06/20/2017] [Accepted: 06/29/2017] [Indexed: 06/07/2023]
Abstract
Iris lactea var. chinensis (I. lactea var. chinensis) is tolerant to accumulations of cadmium (Cd) and lead (Pb). In this study, the transcriptome of I. lactea var. chinensis was investigated under Cd or Pb stresses. Using the gene ontology database, 31,974 unigenes were classified into biological process, cellular component and molecular function. In total, 13,132 unigenes were involved in enriched Encyclopedia of Genes and Genomes (KEGG) metabolic pathways, and the expression levels of 5904 unigenes were significantly changed after exposure to Cd or Pb stresses. Of these, 974 were co-up-regulated and 1281 were co-down-regulated under the two stresses. The transcriptome expression profiles of I. lactea var. chinensis under Cd or Pb stresses obtained in this study provided a resource for identifying common mechanisms in the detoxification of different heavy metals. Furthermore, the identified unigenes may be used for the genetic breeding of heavy-metal tolerant plants.
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Affiliation(s)
- Chun-Sun Gu
- The Jiangsu Provincial Platform for Conservation and Utilization of Agricultural Germplasm, Institute of Botany, Jiangsu Province and Chinese Academy of Sciences, Nanjing 210014, China.
| | - Liang-Qin Liu
- The Jiangsu Provincial Platform for Conservation and Utilization of Agricultural Germplasm, Institute of Botany, Jiangsu Province and Chinese Academy of Sciences, Nanjing 210014, China
| | - Yan-Ming Deng
- Institute of Leisure Agriculture, Jiangsu Academy of Agricultural Sciences, Nanjing 210014, China
| | - Yong-Xia Zhang
- The Jiangsu Provincial Platform for Conservation and Utilization of Agricultural Germplasm, Institute of Botany, Jiangsu Province and Chinese Academy of Sciences, Nanjing 210014, China
| | - Zhi-Quan Wang
- The Jiangsu Provincial Platform for Conservation and Utilization of Agricultural Germplasm, Institute of Botany, Jiangsu Province and Chinese Academy of Sciences, Nanjing 210014, China
| | - Hai-Yan Yuan
- The Jiangsu Provincial Platform for Conservation and Utilization of Agricultural Germplasm, Institute of Botany, Jiangsu Province and Chinese Academy of Sciences, Nanjing 210014, China
| | - Su-Zhen Huang
- The Jiangsu Provincial Platform for Conservation and Utilization of Agricultural Germplasm, Institute of Botany, Jiangsu Province and Chinese Academy of Sciences, Nanjing 210014, China
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20
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Fan X, Naz M, Fan X, Xuan W, Miller AJ, Xu G. Plant nitrate transporters: from gene function to application. JOURNAL OF EXPERIMENTAL BOTANY 2017; 68:2463-2475. [PMID: 28158856 DOI: 10.1093/jxb/erx011] [Citation(s) in RCA: 150] [Impact Index Per Article: 21.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/18/2023]
Abstract
We summarize nitrate transporters and discuss their potential in breeding for improved nitrogen use efficiency and yield.
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Affiliation(s)
- Xiaorong Fan
- State Key Laboratory of Crop Genetics and Germplasm Enhancement, Nanjing Agricultural University, Nanjing 210095, China
- Key Laboratory of Plant Nutrition and Fertilization in Lower-Middle Reaches of the Yangtze River, Ministry of Agriculture, Nanjing Agricultural University, Nanjing 210095, China
| | - Misbah Naz
- State Key Laboratory of Crop Genetics and Germplasm Enhancement, Nanjing Agricultural University, Nanjing 210095, China
| | - Xiaoru Fan
- State Key Laboratory of Crop Genetics and Germplasm Enhancement, Nanjing Agricultural University, Nanjing 210095, China
- Key Laboratory of Plant Nutrition and Fertilization in Lower-Middle Reaches of the Yangtze River, Ministry of Agriculture, Nanjing Agricultural University, Nanjing 210095, China
| | - Wei Xuan
- Key Laboratory of Plant Nutrition and Fertilization in Lower-Middle Reaches of the Yangtze River, Ministry of Agriculture, Nanjing Agricultural University, Nanjing 210095, China
| | - Anthony J Miller
- Metabolic Biology Department, John Innes Centre, Norwich Research Park , Norwich NR4 7UH, UK
| | - Guohua Xu
- State Key Laboratory of Crop Genetics and Germplasm Enhancement, Nanjing Agricultural University, Nanjing 210095, China
- Key Laboratory of Plant Nutrition and Fertilization in Lower-Middle Reaches of the Yangtze River, Ministry of Agriculture, Nanjing Agricultural University, Nanjing 210095, China
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21
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Pii Y, Alessandrini M, Dall’Osto L, Guardini K, Prinsi B, Espen L, Zamboni A, Varanini Z. Time-Resolved Investigation of Molecular Components Involved in the Induction of [Formula: see text] High Affinity Transport System in Maize Roots. FRONTIERS IN PLANT SCIENCE 2016; 7:1657. [PMID: 27877183 PMCID: PMC5099785 DOI: 10.3389/fpls.2016.01657] [Citation(s) in RCA: 25] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/18/2016] [Accepted: 10/20/2016] [Indexed: 05/18/2023]
Abstract
The induction, i.e., the rapid increase of nitrate ([Formula: see text]) uptake following the exposure of roots to the anion, was studied integrating physiological and molecular levels in maize roots. Responses to [Formula: see text] treatment were characterized in terms of changes in [Formula: see text] uptake rate and plasma membrane (PM) H+-ATPase activity and related to transcriptional and protein profiles of NRT2, NRT3, and PM H+-ATPase gene families. The behavior of transcripts and proteins of ZmNRT2s and ZmNRT3s suggested that the regulation of the activity of inducible high-affinity transport system (iHATS) is mainly based on the transcriptional/translational modulation of the accessory protein ZmNRT3.1A. Furthermore, ZmNRT2.1 and ZmNRT3.1A appear to be associated in a ∼150 kDa oligomer. The expression trend during the induction of the 11 identified PM H+-ATPase transcripts indicates that those mainly involved in the response to [Formula: see text] treatment are ZmHA2 and ZmHA4. Yet, partial correlation between the gene expression, protein levels and enzyme activity suggests an involvement of post-transcriptional and post-translational mechanisms of regulation. A non-denaturing Deriphat-PAGE approach allowed demonstrating for the first time that PM H+-ATPase can occur in vivo as hexameric complex together with the already described monomeric and dimeric forms.
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Affiliation(s)
- Youry Pii
- Faculty of Science and Technology, Free University of BolzanoBolzano, Italy
| | | | - Luca Dall’Osto
- Department of Biotechnology, University of VeronaVerona, Italy
| | - Katia Guardini
- Department of Biotechnology, University of VeronaVerona, Italy
| | - Bhakti Prinsi
- Department of Agricultural and Environmental Sciences - Production, Landscape, Agroenergy, University of MilanoMilano, Italy
| | - Luca Espen
- Department of Agricultural and Environmental Sciences - Production, Landscape, Agroenergy, University of MilanoMilano, Italy
| | - Anita Zamboni
- Department of Biotechnology, University of VeronaVerona, Italy
| | - Zeno Varanini
- Department of Biotechnology, University of VeronaVerona, Italy
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