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Ninkuu V, Zhou Y, Liu H, Sun S, Liu Z, Liu Y, Yang J, Hu M, Guan L, Sun X. Regulation of nitrogen metabolism by COE2 under low sulfur stress in Arabidopsis. PLANT SCIENCE : AN INTERNATIONAL JOURNAL OF EXPERIMENTAL PLANT BIOLOGY 2024; 346:112137. [PMID: 38815871 DOI: 10.1016/j.plantsci.2024.112137] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/25/2024] [Accepted: 05/27/2024] [Indexed: 06/01/2024]
Abstract
The interplay between nitrogen and sulfur assimilation synergistically supports and sustains plant growth and development, operating in tandem to ensure coordinated and optimal outcomes. Previously, we characterized Arabidopsis CHLOROPHYLL A/B-BINDING (CAB) overexpression 2 (COE2) mutant, which has a mutation in the NITRIC OXIDE-ASSOCIATED (NOA1) gene and exhibits deficiency in root growth under low nitrogen (LN) stress. This study found that the growth suppression in roots and shoots in coe2 correlates with decreased sensitivity to low sulfur stress treatment compared to the wild-type. Therefore, we examined the regulatory role of COE2 in nitrogen and sulfur interaction by assessing the expression of nitrogen metabolism-related genes in coe2 seedlings under low sulfur stress. Despite the notable upregulation of nitrate reductase genes (NIA1 and NIA2), there was a considerable reduction in nitrogen uptake and utilization, resulting in a substantial growth penalty. Moreover, the elevated expression of miR396 perhaps complemented growth stunting by selectively targeting and curtailing the expression levels of GROWTH REGULATING FACTOR 2 (GRF2), GRF4, and GRF9. This study underscores the vital role of COE2-mediated nitrogen signaling in facilitating seedling growth under sulfur deficiency stress.
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Affiliation(s)
- Vincent Ninkuu
- National Key Laboratory of Cotton Bio-breeding and Integrated Utilization, State Key Laboratory of Crop Stress Adaptation and Improvement, School of Life Sciences, Henan University, 85 Minglun Street, Kaifeng 475001, China
| | - Yaping Zhou
- National Key Laboratory of Cotton Bio-breeding and Integrated Utilization, State Key Laboratory of Crop Stress Adaptation and Improvement, School of Life Sciences, Henan University, 85 Minglun Street, Kaifeng 475001, China
| | - Hao Liu
- National Key Laboratory of Cotton Bio-breeding and Integrated Utilization, State Key Laboratory of Crop Stress Adaptation and Improvement, School of Life Sciences, Henan University, 85 Minglun Street, Kaifeng 475001, China
| | - Susu Sun
- National Key Laboratory of Cotton Bio-breeding and Integrated Utilization, State Key Laboratory of Crop Stress Adaptation and Improvement, School of Life Sciences, Henan University, 85 Minglun Street, Kaifeng 475001, China
| | - Zhixin Liu
- National Key Laboratory of Cotton Bio-breeding and Integrated Utilization, State Key Laboratory of Crop Stress Adaptation and Improvement, School of Life Sciences, Henan University, 85 Minglun Street, Kaifeng 475001, China
| | - Yumeng Liu
- National Key Laboratory of Cotton Bio-breeding and Integrated Utilization, State Key Laboratory of Crop Stress Adaptation and Improvement, School of Life Sciences, Henan University, 85 Minglun Street, Kaifeng 475001, China
| | - Jincheng Yang
- National Key Laboratory of Cotton Bio-breeding and Integrated Utilization, State Key Laboratory of Crop Stress Adaptation and Improvement, School of Life Sciences, Henan University, 85 Minglun Street, Kaifeng 475001, China
| | - Mengke Hu
- National Key Laboratory of Cotton Bio-breeding and Integrated Utilization, State Key Laboratory of Crop Stress Adaptation and Improvement, School of Life Sciences, Henan University, 85 Minglun Street, Kaifeng 475001, China
| | - Liping Guan
- National Key Laboratory of Cotton Bio-breeding and Integrated Utilization, State Key Laboratory of Crop Stress Adaptation and Improvement, School of Life Sciences, Henan University, 85 Minglun Street, Kaifeng 475001, China
| | - Xuwu Sun
- National Key Laboratory of Cotton Bio-breeding and Integrated Utilization, State Key Laboratory of Crop Stress Adaptation and Improvement, School of Life Sciences, Henan University, 85 Minglun Street, Kaifeng 475001, China.
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Elsanosi HA, Zhu T, Zhou G, Song L. Genomic organization and expression profiles of nitrogen assimilation genes in Glycine max. PeerJ 2024; 12:e17590. [PMID: 38938604 PMCID: PMC11210457 DOI: 10.7717/peerj.17590] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/02/2024] [Accepted: 05/28/2024] [Indexed: 06/29/2024] Open
Abstract
Background Glutamine synthetase (GS), glutamate synthase (GOGAT), and nitrate reductase (NR) are key enzymes involved in nitrogen assimilation and metabolism in plants. However, the systematic analysis of these gene families lacked reports in soybean (Glycine max (L.) Merr.), one of the most important crops worldwide. Methods In this study, we performed genome-wide identification and characterization of GS, GOGAT, and NR genes in soybean under abiotic and nitrogen stress conditions. Results We identified a total of 10 GS genes, six GOGAT genes, and four NR genes in the soybean genome. Phylogenetic analysis revealed the presence of multiple isoforms for each gene family, indicating their functional diversification. The distribution of these genes on soybean chromosomes was uneven, with segmental duplication events contributing to their expansion. Within the nitrogen assimilation genes (NAGs) group, there was uniformity in the exon-intron structure and the presence of conserved motifs in NAGs. Furthermore, analysis of cis-elements in NAG promoters indicated complex regulation of their expression. RT-qPCR analysis of seven soybean NAGs under various abiotic stresses, including nitrogen deficiency, drought-nitrogen, and salinity, revealed distinct regulatory patterns. Most NAGs exhibited up-regulation under nitrogen stress, while diverse expression patterns were observed under salt and drought-nitrogen stress, indicating their crucial role in nitrogen assimilation and abiotic stress tolerance. These findings offer valuable insights into the genomic organization and expression profiles of GS, GOGAT, and NR genes in soybean under nitrogen and abiotic stress conditions. The results have potential applications in the development of stress-resistant soybean varieties through genetic engineering and breeding.
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Affiliation(s)
- Hind Abdelmonim Elsanosi
- Joint International Research Laboratory of Agriculture and Agri-Product Safety, the Ministry of Education of China, Jiangsu Key Laboratory of Crop Genomics and Molecular Breeding, Yangzhou University, Yangzhou, Jiangsu, China
- Faculty of Agriculture, University of Khartoum, Khartoum, Sudan
| | - Tiantian Zhu
- Joint International Research Laboratory of Agriculture and Agri-Product Safety, the Ministry of Education of China, Jiangsu Key Laboratory of Crop Genomics and Molecular Breeding, Yangzhou University, Yangzhou, Jiangsu, China
| | - Guisheng Zhou
- Joint International Research Laboratory of Agriculture and Agri-Product Safety, the Ministry of Education of China, Jiangsu Key Laboratory of Crop Genomics and Molecular Breeding, Yangzhou University, Yangzhou, Jiangsu, China
| | - Li Song
- Joint International Research Laboratory of Agriculture and Agri-Product Safety, the Ministry of Education of China, Jiangsu Key Laboratory of Crop Genomics and Molecular Breeding, Yangzhou University, Yangzhou, Jiangsu, China
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Li S, Jiao B, Wang J, Zhao P, Dong F, Yang F, Ma C, Guo P, Zhou S. Identification of Wheat Glutamate Synthetase Gene Family and Expression Analysis under Nitrogen Stress. Genes (Basel) 2024; 15:827. [PMID: 39062606 PMCID: PMC11275450 DOI: 10.3390/genes15070827] [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: 05/25/2024] [Revised: 06/16/2024] [Accepted: 06/18/2024] [Indexed: 07/28/2024] Open
Abstract
Nitrogen (N), as the main component of biological macromolecules, maintains the basic process of plant growth and development. GOGAT, as a key enzyme in the N assimilation process, catalyzes α-ketoglutaric acid and glutamine to form glutamate. In this study, six GOGAT genes in wheat (Triticum aestivum L.) were identified and classified into two subfamilies, Fd-GOGAT (TaGOGAT2s) and NADH-GOGAT (TaGOGAT3s), according to the type of electron donor. Subcellular localization prediction showed that TaGOGAT3-D was localized in mitochondria and that the other five TaGOGATs were localized in chloroplasts. Via the analysis of promoter elements, many binding sites related to growth and development, hormone regulation and plant stress resistance regulations were found on the TaGOGAT promoters. The tissue-specificity expression analysis showed that TaGOGAT2s were mainly expressed in wheat leaves and flag leaves, while TaGOGAT3s were highly expressed in roots and leaves. The expression level of TaGOGATs and the enzyme activity of TaGOGAT3s in the leaves and roots of wheat seedlings were influenced by the treatment of N deficiency. This study conducted a systematic analysis of wheat GOGAT genes, providing a theoretical basis not only for the functional analysis of TaGOGATs, but also for the study of wheat nitrogen use efficiency (NUE).
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Affiliation(s)
- Songshuo Li
- School of Biological Science and Engineering, Hebei University of Science and Technology, Yuxiang Street 26, Shijiazhuang 050018, China;
| | - Bo Jiao
- Hebei Key Laboratory of Plant Genetic Engineering, Institute of Biotechnology and Food Science, Hebei Academy of Agriculture and Forestry Sciences, Shijiazhuang 050051, China; (B.J.)
| | - Jiao Wang
- Hebei Key Laboratory of Plant Genetic Engineering, Institute of Biotechnology and Food Science, Hebei Academy of Agriculture and Forestry Sciences, Shijiazhuang 050051, China; (B.J.)
| | - Pu Zhao
- Hebei Key Laboratory of Plant Genetic Engineering, Institute of Biotechnology and Food Science, Hebei Academy of Agriculture and Forestry Sciences, Shijiazhuang 050051, China; (B.J.)
| | - Fushuang Dong
- Hebei Key Laboratory of Plant Genetic Engineering, Institute of Biotechnology and Food Science, Hebei Academy of Agriculture and Forestry Sciences, Shijiazhuang 050051, China; (B.J.)
| | - Fan Yang
- Hebei Key Laboratory of Plant Genetic Engineering, Institute of Biotechnology and Food Science, Hebei Academy of Agriculture and Forestry Sciences, Shijiazhuang 050051, China; (B.J.)
| | - Chunhong Ma
- Hebei Key Laboratory of Plant Genetic Engineering, Institute of Biotechnology and Food Science, Hebei Academy of Agriculture and Forestry Sciences, Shijiazhuang 050051, China; (B.J.)
| | - Peng Guo
- School of Biological Science and Engineering, Hebei University of Science and Technology, Yuxiang Street 26, Shijiazhuang 050018, China;
| | - Shuo Zhou
- Hebei Key Laboratory of Plant Genetic Engineering, Institute of Biotechnology and Food Science, Hebei Academy of Agriculture and Forestry Sciences, Shijiazhuang 050051, China; (B.J.)
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Zhang S, Xu L, Zheng Q, Hu J, Jiang D, Dai T, Tian Z. The tetraploid wheat (Triticum dicoccum (Schrank) Schuebl.) improves nitrogen uptake and assimilation adaptation to nitrogen-deficit stress. PLANTA 2024; 259:151. [PMID: 38733553 DOI: 10.1007/s00425-024-04432-z] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/22/2024] [Accepted: 05/04/2024] [Indexed: 05/13/2024]
Abstract
MAIN CONCLUSION The genetic diversity in tetraploid wheat provides a genetic pool for improving wheat productivity and environmental resilience. The tetraploid wheat had strong N uptake, translocation, and assimilation capacity under N deficit stress, thus alleviating growth inhibition and plant N loss to maintain healthy development and adapt to environments with low N inputs. Tetraploid wheat with a rich genetic variability provides an indispensable genetic pool for improving wheat yield. Mining the physiological mechanisms of tetraploid wheat in response to nitrogen (N) deficit stress is important for low-N-tolerant wheat breeding. In this study, we selected emmer wheat (Kronos, tetraploid), Yangmai 25 (YM25, hexaploid), and Chinese spring (CS, hexaploid) as materials. We investigated the differences in the response of root morphology, leaf and root N accumulation, N uptake, translocation, and assimilation-related enzymes and gene expression in wheat seedlings of different ploidy under N deficit stress through hydroponic experiments. The tetraploid wheat (Kronos) had stronger adaptability to N deficit stress than the hexaploid wheats (YM25, CS). Kronos had better root growth under low N stress, expanding the N uptake area and enhancing N uptake to maintain higher NO3- and soluble protein contents. Kronos exhibited high TaNRT1.1, TaNRT2.1, and TaNRT2.2 expression in roots, which promoted NO3- uptake, and high TaNRT1.5 and TaNRT1.8 expression in roots and leaves enhanced NO3- translocation to the aboveground. NR and GS activity in roots and leaves of Kronos was higher by increasing the expression of TANIA2, TAGS1, and TAGS2, which enhanced the reduction and assimilation of NO3- as well as the re-assimilation of photorespiratory-released NH4+. Overall, Kronos had strong N uptake, translocation, and assimilation capacity under N deficit stress, alleviating growth inhibition and plant N loss and thus maintaining a healthy development. This study reveals the physiological mechanisms of tetraploid wheat that improve nitrogen uptake and assimilation adaptation under low N stress, which will provide indispensable germplasm resources for elite low-N-tolerant wheat improvement and breeding.
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Affiliation(s)
- Siqi Zhang
- Key Laboratory of Crop Physiology Ecology and Production Management of Ministry of Agriculture, Nanjing Agricultural University, No. 1 Weigang, Nanjing, 210095, Jiangsu, People's Republic of China
| | - Libing Xu
- Key Laboratory of Crop Physiology Ecology and Production Management of Ministry of Agriculture, Nanjing Agricultural University, No. 1 Weigang, Nanjing, 210095, Jiangsu, People's Republic of China
| | - Qiaomei Zheng
- Key Laboratory of Crop Physiology Ecology and Production Management of Ministry of Agriculture, Nanjing Agricultural University, No. 1 Weigang, Nanjing, 210095, Jiangsu, People's Republic of China
| | - Jinling Hu
- Key Laboratory of Crop Physiology Ecology and Production Management of Ministry of Agriculture, Nanjing Agricultural University, No. 1 Weigang, Nanjing, 210095, Jiangsu, People's Republic of China
| | - Dong Jiang
- Key Laboratory of Crop Physiology Ecology and Production Management of Ministry of Agriculture, Nanjing Agricultural University, No. 1 Weigang, Nanjing, 210095, Jiangsu, People's Republic of China
| | - Tingbo Dai
- Key Laboratory of Crop Physiology Ecology and Production Management of Ministry of Agriculture, Nanjing Agricultural University, No. 1 Weigang, Nanjing, 210095, Jiangsu, People's Republic of China
| | - Zhongwei Tian
- Key Laboratory of Crop Physiology Ecology and Production Management of Ministry of Agriculture, Nanjing Agricultural University, No. 1 Weigang, Nanjing, 210095, Jiangsu, People's Republic of China.
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Yuce M, Yildirim E, Ekinci M, Turan M, Ilhan E, Aydin M, Agar G, Ucar S. N-acetyl-cysteine mitigates arsenic stress in lettuce: Molecular, biochemical, and physiological perspective. PLANT PHYSIOLOGY AND BIOCHEMISTRY : PPB 2024; 207:108390. [PMID: 38373369 DOI: 10.1016/j.plaphy.2024.108390] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/10/2023] [Revised: 01/18/2024] [Accepted: 01/19/2024] [Indexed: 02/21/2024]
Abstract
Agricultural land contaminated with heavy metals such as non-biodegradable arsenic (As) has become a serious global problem as it adversely affects agricultural productivity, food security and human health. Therefore, in this study, we investigated how the administration of N-acetyl-cysteine (NAC), regulates the physio-biochemical and gene expression level to reduce As toxicity in lettuce. According to our results, different NAC levels (125, 250 and 500 μM) significantly alleviated the growth inhibition and toxicity induced by As stress (20 mg/L). Shoot fresh weight, root fresh weight, shoot dry weight and root dry weight (33.05%, 55.34%, 17.97% and 46.20%, respectively) were decreased in plants grown in As-contaminated soils compared to lettuce plants grown in soils without the addition of As. However, NAC applications together with As stress increased these growth parameters. While the highest increase in shoot fresh and dry weight (58.31% and 37.85%, respectively) was observed in 250 μM NAC application, the highest increase in root fresh and dry weight (75.97% and 63.07%, respectively) was observed in 125 μM NAC application in plants grown in As-polluted soils. NAC application decreased the amount of ROS, MDA and H2O2 that increased with As stress, and decreased oxidative damage by regulating hormone levels, antioxidant and enzymes involved in nitrogen metabolism. According to gene expression profiles, LsHIPP28 and LsABC3 genes have shown important roles in reducing As toxicity in leaves. This study will provide insight for future studies on how NAC applications develop resistance to As stress in lettuce.
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Affiliation(s)
- Merve Yuce
- Atatürk University, Faculty of Agriculture, Department of Horticulture, Erzurum, Turkey.
| | - Ertan Yildirim
- Atatürk University, Faculty of Agriculture, Department of Horticulture, Erzurum, Turkey
| | - Melek Ekinci
- Atatürk University, Faculty of Agriculture, Department of Horticulture, Erzurum, Turkey
| | - Metin Turan
- Yeditepe University, Faculty of Economy and Administrative Sciences, Department of Agricultural Trade and Management, Istanbul, Turkey
| | - Emre Ilhan
- Erzurum Technical University, Faculty of Science, Department of Molecular Biology and Genetics, 25050, Erzurum, Turkey
| | - Murat Aydin
- Atatürk University, Faculty of Agriculture, Department of Agricultural Biotechnology, Erzurum, Turkey
| | - Guleray Agar
- Atatürk University, Faculty of Science, Department of Biology, Erzurum, Turkey
| | - Sumeyra Ucar
- Erzurum Technical University, Faculty of Science, Department of Molecular Biology and Genetics, 25050, Erzurum, Turkey
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Li G, Guo X, Sun W, Hou L, Wang G, Tian R, Wang X, Qu C, Zhao C. Nitrogen application in pod zone improves yield and quality of two peanut cultivars by modulating nitrogen accumulation and metabolism. BMC PLANT BIOLOGY 2024; 24:48. [PMID: 38216909 PMCID: PMC10787501 DOI: 10.1186/s12870-024-04725-1] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/18/2023] [Accepted: 01/02/2024] [Indexed: 01/14/2024]
Abstract
Cultivated peanut (Arachis hypogaea L.) represents one of the most important oil and cash crops world-widely. Unlike many other legumes, peanuts absorb nitrogen through their underground pods. Despite this unique feature, the relationship between yield and nitrogen uptake within the pod zone remains poorly understood. In our pot experiment, we divided the underground peanut part into two zones-pod and root-and investigated the physiological and agronomic traits of two peanut cultivars, SH11 (large seeds, LS) and HY23 (small seeds, SS), at 10 (S1), 20 (S2), and 30 (S3) days after gynophores penetrated the soil, with nitrogen application in the pod zone. Results indicated that nitrogen application increased pod yield, kernel protein content, and nitrogen accumulation in plants. For both LS and SS peanut cultivars, optimal nitrogen content was 60 kg·hm- 2, leading to maximum yield. LS cultivar exhibited higher yield and nitrogen accumulation increases than SS cultivar. Nitrogen application up-regulated the expression of nitrogen metabolism-related genes in the pod, including nitrate reductase (NR), nitrite reductase (NIR), glutamine synthetase (GS), glutamate synthase (NADH-GOGAT), ATP binding cassette (ABC), and nitrate transporter (NRT2). Additionally, nitrogen application increased enzyme activity in the pod, including NR, GS, and GOGAT, consistent with gene expression levels. These nitrogen metabolism traits exhibited higher up-regulations in the large-seeded cultivar than in the small-seeded one and showed a significant correlation with yield in the large-seeded cultivar at S2 and S3. Our findings offer a scientific basis for the judicious application and efficient utilization of nitrogen fertilization in peanuts, laying the groundwork for further elucidating the molecular mechanisms of peanut nitrogen utilization.
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Affiliation(s)
- Guanghui Li
- Institute of Crop Germplasm Resources (Institute of Biotechnology), Shandong Provincial Key Laboratory of Crop Genetic Improvement, Ecology and Physiology, Shandong Academy of Agricultural Sciences, Jinan, 250100, China
| | - Xin Guo
- Institute of Crop Germplasm Resources (Institute of Biotechnology), Shandong Provincial Key Laboratory of Crop Genetic Improvement, Ecology and Physiology, Shandong Academy of Agricultural Sciences, Jinan, 250100, China
| | - Wei Sun
- Linyi Academy of Agricultural Sciences, Linyi, 276012, China
| | - Lei Hou
- Institute of Crop Germplasm Resources (Institute of Biotechnology), Shandong Provincial Key Laboratory of Crop Genetic Improvement, Ecology and Physiology, Shandong Academy of Agricultural Sciences, Jinan, 250100, China
| | - Guanghao Wang
- Institute of Crop Germplasm Resources (Institute of Biotechnology), Shandong Provincial Key Laboratory of Crop Genetic Improvement, Ecology and Physiology, Shandong Academy of Agricultural Sciences, Jinan, 250100, China
| | - Ruizheng Tian
- Institute of Crop Germplasm Resources (Institute of Biotechnology), Shandong Provincial Key Laboratory of Crop Genetic Improvement, Ecology and Physiology, Shandong Academy of Agricultural Sciences, Jinan, 250100, China
| | - Xingjun Wang
- Institute of Crop Germplasm Resources (Institute of Biotechnology), Shandong Provincial Key Laboratory of Crop Genetic Improvement, Ecology and Physiology, Shandong Academy of Agricultural Sciences, Jinan, 250100, China
| | - Chunjuan Qu
- Shandong Peanut Research Institute, Qingdao, 266100, China.
| | - Chuanzhi Zhao
- Institute of Crop Germplasm Resources (Institute of Biotechnology), Shandong Provincial Key Laboratory of Crop Genetic Improvement, Ecology and Physiology, Shandong Academy of Agricultural Sciences, Jinan, 250100, China.
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Li H, Zhang Y, Li H, V. P. Reddy G, Li Z, Chen F, Sun Y, Zhao Z. The nitrogen-dependent GABA pathway of tomato provides resistance to a globally invasive fruit fly. FRONTIERS IN PLANT SCIENCE 2023; 14:1252455. [PMID: 38148864 PMCID: PMC10751092 DOI: 10.3389/fpls.2023.1252455] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 07/03/2023] [Accepted: 11/14/2023] [Indexed: 12/28/2023]
Abstract
Introduction The primary metabolism of plants, which is mediated by nitrogen, is closely related to the defense response to insect herbivores. Methods An experimental system was established to examine how nitrogen mediated tomato resistance to an insect herbivore, the oriental fruit fly (Bactrocera dorsalis). All tomatoes were randomly assigned to the suitable nitrogen (control, CK) treatment, nitrogen excess (NE) treatment and nitrogen deficiency (ND) treatment. Results We found that nitrogen excess significantly increased the aboveground biomass of tomato and increased the pupal biomass of B. dorsalis. Metabolome analysis showed that nitrogen excess promoted the biosynthesis of amino acids in healthy fruits, including γ-aminobutyric acid (GABA), arginine and asparagine. GABA was not a differential metabolite induced by injury by B. dorsalis under nitrogen excess, but it was significantly induced in infested fruits at appropriate nitrogen levels. GABA supplementation not only increased the aboveground biomass of plants but also improved the defensive response of tomato. Discussion The biosynthesis of GABA in tomato is a resistance response to feeding by B. dorsalis in appropriate nitrogen, whereas nitrogen excess facilitates the pupal weight of B. dorsalis by inhibiting synthesis of the GABA pathway. This study concluded that excess nitrogen inhibits tomato defenses in plant-insect interactions by inhibiting GABA synthesis, answering some unresolved questions about the nitrogen-dependent GABA resistance pathway to herbivores.
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Affiliation(s)
- Hao Li
- Department of Plant Biosecurity & Ministry of Agriculture and Rural Affairs (MARA) Key Laboratory of Surveillance and Management for Plant Quarantine Pests, College of Plant Protection, China Agricultural University, Beijing, China
- Sanya Institute of China Agricultural University, Sanya, China
| | - Yuan Zhang
- Department of Plant Biosecurity & Ministry of Agriculture and Rural Affairs (MARA) Key Laboratory of Surveillance and Management for Plant Quarantine Pests, College of Plant Protection, China Agricultural University, Beijing, China
- Sanya Institute of China Agricultural University, Sanya, China
| | - Hu Li
- Department of Plant Biosecurity & Ministry of Agriculture and Rural Affairs (MARA) Key Laboratory of Surveillance and Management for Plant Quarantine Pests, College of Plant Protection, China Agricultural University, Beijing, China
| | - Gadi V. P. Reddy
- Department of Entomology, Louisiana State University, Baton Rouge, LA, United States
| | - Zhihong Li
- Department of Plant Biosecurity & Ministry of Agriculture and Rural Affairs (MARA) Key Laboratory of Surveillance and Management for Plant Quarantine Pests, College of Plant Protection, China Agricultural University, Beijing, China
- Sanya Institute of China Agricultural University, Sanya, China
| | - Fajun Chen
- Department of Entomology, College of Plant Protection, Nanjing Agricultural University, Nanjing, China
| | - Yucheng Sun
- National Key Lab Integrated Management Pest Insects, Institute of Zoology, Chinese Academy Science, Beijing, China
| | - Zihua Zhao
- Department of Plant Biosecurity & Ministry of Agriculture and Rural Affairs (MARA) Key Laboratory of Surveillance and Management for Plant Quarantine Pests, College of Plant Protection, China Agricultural University, Beijing, China
- Sanya Institute of China Agricultural University, Sanya, China
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Li S, Wang S, Ye W, Yao Y, Sun F, Zhang C, Liu S, Xi Y. Effect of Mowing on Wheat Growth at Seeding Stage. Int J Mol Sci 2023; 24:15353. [PMID: 37895031 PMCID: PMC10607078 DOI: 10.3390/ijms242015353] [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: 08/16/2023] [Revised: 09/09/2023] [Accepted: 10/12/2023] [Indexed: 10/29/2023] Open
Abstract
Winter wheat is used as forage at the tillering stage in many countries; however, the regrowth pattern of wheat after mowing remains unclear. In this study, the growth patterns of wheat were revealed through cytological and physiological assessments as well as transcriptome sequencing. The results of agronomic traits and paraffin sections showed that the shoot growth rate increased, but root growth was inhibited after mowing. The submicroscopic structure revealed a decrease in heterochromatin in the tillering node cell and a change in mitochondrial shape in the tillering node and secondary root. Analysis of the transcriptome showed the number of differentially expressed genes (DEGs) involved in biological processes, cellular components, and molecular functions; 2492 upregulated DEGs and 1534 downregulated DEGs were identified. The results of the experimental study showed that mowing induced expression of DEGs in the phenylpropanoid biosynthesis pathway and increased the activity of PAL and 4CL. The upregulated DEGs in the starch and sucrose metabolism pathways and related enzyme activity alterations indicated that the sugar degradation rate increased. The DEGs in the nitrogen metabolism pathway biosynthesis of the amino acids, phenylpropanoid biosynthesis metabolism, and in the TCA pathway also changed after mowing. Hormone content and related gene expression was also altered in the tillering and secondary roots after mowing. When jasmonic acid and ethylene were used to treat the wheat after mowing, the regeneration rate increased, whereas abscisic acid inhibited regrowth. This study revealed the wheat growth patterns after mowing, which could lead to a better understanding of the development of dual-purpose wheat.
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Affiliation(s)
| | | | | | | | | | | | | | - Yajun Xi
- College of Agronomy, Northwest A&F University, Yangling 712100, China; (S.L.); (S.W.); (W.Y.); (Y.Y.); (F.S.); (C.Z.); (S.L.)
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Zayed O, Hewedy OA, Abdelmoteleb A, Ali M, Youssef MS, Roumia AF, Seymour D, Yuan ZC. Nitrogen Journey in Plants: From Uptake to Metabolism, Stress Response, and Microbe Interaction. Biomolecules 2023; 13:1443. [PMID: 37892125 PMCID: PMC10605003 DOI: 10.3390/biom13101443] [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: 08/21/2023] [Revised: 09/19/2023] [Accepted: 09/19/2023] [Indexed: 10/29/2023] Open
Abstract
Plants uptake and assimilate nitrogen from the soil in the form of nitrate, ammonium ions, and available amino acids from organic sources. Plant nitrate and ammonium transporters are responsible for nitrate and ammonium translocation from the soil into the roots. The unique structure of these transporters determines the specificity of each transporter, and structural analyses reveal the mechanisms by which these transporters function. Following absorption, the nitrogen metabolism pathway incorporates the nitrogen into organic compounds via glutamine synthetase and glutamate synthase that convert ammonium ions into glutamine and glutamate. Different isoforms of glutamine synthetase and glutamate synthase exist, enabling plants to fine-tune nitrogen metabolism based on environmental cues. Under stressful conditions, nitric oxide has been found to enhance plant survival under drought stress. Furthermore, the interaction between salinity stress and nitrogen availability in plants has been studied, with nitric oxide identified as a potential mediator of responses to salt stress. Conversely, excessive use of nitrate fertilizers can lead to health and environmental issues. Therefore, alternative strategies, such as establishing nitrogen fixation in plants through diazotrophic microbiota, have been explored to reduce reliance on synthetic fertilizers. Ultimately, genomics can identify new genes related to nitrogen fixation, which could be harnessed to improve plant productivity.
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Affiliation(s)
- Omar Zayed
- Department of Botany and Plant Sciences, University of California Riverside, Riverside, CA 9250, USA;
- Genetics Department, Faculty of Agriculture, Menoufia University, Shebin El-Kom 32511, Egypt;
| | - Omar A. Hewedy
- Genetics Department, Faculty of Agriculture, Menoufia University, Shebin El-Kom 32511, Egypt;
- Department of Plant Agriculture, University of Guelph, 50 Stone Road East, Guelph, ON N1G 2W1, Canada
| | - Ali Abdelmoteleb
- Botany Department, Faculty of Agriculture, Menoufia University, Shebin El-Kom 32511, Egypt;
| | - Mohammed Ali
- Maryout Research Station, Genetic Resources Department, Desert Research Center, 1 Mathaf El-Matarya St., El-Matareya, Cairo 11753, Egypt;
| | - Mohamed S. Youssef
- Botany and Microbiology Department, Faculty of Science, Kafrelsheikh University, Kafrelsheikh 33516, Egypt;
- Department of Plant Science, University of Manitoba, Winnipeg, MB R3T 2N2, Canada
| | - Ahmed F. Roumia
- Department of Agricultural Biochemistry, Faculty of Agriculture, Menoufia University, Shibin El-Kom 32514, Egypt;
| | - Danelle Seymour
- Department of Botany and Plant Sciences, University of California Riverside, Riverside, CA 9250, USA;
| | - Ze-Chun Yuan
- Agriculture and Agri-Food Canada, 1391 Sandford Street, London, ON N5V 4T3, Canada
- Department of Microbiology and Immunology, The University of Western Ontario, 1151 Richmond Street, London, ON N6A 5B7, Canada
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10
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Farouk S, El-Hady MAMA, El-Sherpiny MA, Hassan MM, Alamer KH, Al-Robai SA, Ali EF, El-Bauome HA. Effect of Dopamine on Growth, Some Biochemical Attributes, and the Yield of Crisphead Lettuce under Nitrogen Deficiency. HORTICULTURAE 2023; 9:945. [DOI: 10.3390/horticulturae9080945] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 09/02/2023]
Abstract
Nitrogen (N) represents the most important nutrient for plant growth and productivity, but extreme and ineffective usage of N fertilizer results in boosted plant production expenditures and environmental contamination. For the world’s sustainable food production and environmental profits, there has been increased research interest in reducing the use of N fertilization along with improving plant N deficiency (ND) tolerance. Dopamine (DA), a potential antioxidant, mediates several physio-biochemical processes in plants under normal or stressful conditions. However, their roles in increasing ND tolerance in crisphead lettuce are not well-documented. We investigate the role of DA concentration (0.50 and 100 µM) on the growth and yield of crisphead lettuce plants under ND. Under normal conditions (100% recommended N fertilizer dose), DA (50 and 100 μM) application significantly enhanced growth, chlorophyll concentration, N%, antioxidant enzymes activity, as well as yield and its components, decreased nitrate accumulation and oxidative biomarkers compared to untreated plants (0 μM DA). ND significantly decreased plant growth and yield attributes as well as evoked oxidative impairment and nitrate accumulation as compared to 100% recommended N fertilizer dose in the absence of DA. However, within ND conditions, the application of DA concentrations significantly mitigated ND-induced oxidative burst and improved plant growth, chlorophyll concentration, N%, nitrate concentration, peroxidase, catalase, superoxide dismutase, total soluble solid, vitamin C, dry matter %, and total sugars, over 0 μM DA treated plants. Current findings highlighted that exogenous application of 100 μM DA could reinforce the crisphead lettuce plant’s resilience to ND by minimizing reactive oxygen species accumulation and promoting enzymatic antioxidants alongside growth, yield, and quality improvement. The beneficial effects of DA in lessening ND’s drastic impacts on crisphead lettuce resulted from upregulating antioxidant enzyme activity, impairment of oxidative biomarkers, and maintaining chlorophyll levels. The current findings open pioneering prospects to reduce nitrogen fertilization by DA application without any drastic effect on plant productivity. But further research is needed to fully understand DA effects and their mechanisms in inducing ND tolerance in different plant species, including crisphead lettuce.
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Affiliation(s)
- Saad Farouk
- Agricultural Botany Department, Faculty of Agriculture, Mansoura University, Mansoura 35516, Egypt
| | | | - Mohamed A. El-Sherpiny
- Water and Environment Research Institute, Agriculture Research Centre, El-Gama St., Giza 12619, Egypt
| | - Mohamed M. Hassan
- Department of Biology, College of Science, Taif University, P.O. Box 11099, Taif 21944, Saudi Arabia
| | - Khalid H. Alamer
- Biological Sciences Department, Faculty of Science and Arts, King Abdulaziz University, Rabigh 21911, Saudi Arabia
| | - Sami Asir Al-Robai
- Department of Biology, Faculty of Science, Al-Baha University, Al-Baha P.O. Box 1988, Saudi Arabia
| | - Esmat F. Ali
- Department of Biology, College of Science, Taif University, P.O. Box 11099, Taif 21944, Saudi Arabia
| | - Hemat A. El-Bauome
- Vegetable and Floriculture Department, Faculty of Agriculture, Mansoura University, Mansoura 35516, Egypt
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11
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Chen M, Zhu K, Xie J, Liu J, Qiao Z, Tan P, Peng F. Ammonium-nitrate mixtures dominated by NH 4+-N promote the growth of pecan ( Carya illinoinensis) through enhanced N uptake and assimilation. FRONTIERS IN PLANT SCIENCE 2023; 14:1186818. [PMID: 37313261 PMCID: PMC10258329 DOI: 10.3389/fpls.2023.1186818] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 03/15/2023] [Accepted: 04/27/2023] [Indexed: 06/15/2023]
Abstract
Nitrogen (N) limits plant productivity, and its uptake and assimilation may be regulated by N sources, N assimilating enzymes, and N assimilation genes. Mastering the regulatory mechanisms of N uptake and assimilation is a key way to improve plant nitrogen use efficiency (NUE). However, it is poorly known how these factors interact to influence the growth process of pecans. In this study, the growth, nutrient uptake and N assimilation characteristics of pecan were analyzed by aeroponic cultivation at varying NH4 +/NO3 - ratios (0/0, 0/100,25/75, 50/50, 75/25,100/0 as CK, T1, T2, T3, T4, and T5). The results showed that T4 and T5 treatments optimally promoted the growth, nutrient uptake and N assimilating enzyme activities of pecan, which significantly increased aboveground biomass, average relative growth rate (RGR), root area, root activity, free amino acid (FAA) and total organic carbon (TOC) concentrations, nitrate reductase (NR), nitrite reductase (NiR), glutamine synthetase (GS), glutamate synthase (Fd-GOGAT and NADH-GOGAT), and glutamate dehydrogenase (GDH) activities. According to the qRT-PCR results, most of the N assimilation genes were expressed at higher levels in leaves and were mainly significantly up-regulated under T1 and T4 treatments. Correlation analysis showed that a correlation between N assimilating enzymes and N assimilating genes did not necessarily exist. The results of partial least squares path model (PLS-PM) analysis indicated that N assimilation genes could affect the growth of pecan by regulating N assimilation enzymes and nutrients. In summary, we suggested that the NH4 +/NO3 - ratio of 75:25 was more beneficial to improve the growth and NUE of pecan. Meanwhile, we believe that the determination of plant N assimilation capacity should be the result of a comprehensive analysis of N concentration, N assimilation enzymes and related genes.
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Affiliation(s)
- Mengyun Chen
- College of Forestry, Nanjing Forestry University, Nanjing, China
- Co-Innovation Center for Sustainable Forestry in Southern China, College of Forestry, Nanjing Forestry University, Nanjing, China
| | - Kaikai Zhu
- College of Forestry, Nanjing Forestry University, Nanjing, China
- Co-Innovation Center for Sustainable Forestry in Southern China, College of Forestry, Nanjing Forestry University, Nanjing, China
| | - Junyi Xie
- College of Forestry, Nanjing Forestry University, Nanjing, China
- Department of Ecology, Nanjing Forestry University, Nanjing, China
| | - Junping Liu
- College of Forestry, Nanjing Forestry University, Nanjing, China
- Co-Innovation Center for Sustainable Forestry in Southern China, College of Forestry, Nanjing Forestry University, Nanjing, China
| | - Zhenbing Qiao
- College of Forestry, Nanjing Forestry University, Nanjing, China
- Co-Innovation Center for Sustainable Forestry in Southern China, College of Forestry, Nanjing Forestry University, Nanjing, China
| | - Pengpeng Tan
- College of Forestry, Nanjing Forestry University, Nanjing, China
- Co-Innovation Center for Sustainable Forestry in Southern China, College of Forestry, Nanjing Forestry University, Nanjing, China
| | - Fangren Peng
- College of Forestry, Nanjing Forestry University, Nanjing, China
- Co-Innovation Center for Sustainable Forestry in Southern China, College of Forestry, Nanjing Forestry University, Nanjing, China
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12
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Zhu S, Li W, Yan S, Shi W. Transcriptomic Analysis of Differentially Expressed Genes in Arabidopsis thaliana Overexpressing BnMYB2 from Boehmeria nivea under Cadmium Stress. Catalysts 2023. [DOI: 10.3390/catal13040662] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 03/30/2023] Open
Abstract
Boehmeria nivea (ramie) is an important fiber crop with strong tolerance to cadmium (Cd). In our previous study, a novel MYB transcription factor gene from ramie, BnMYB2, was found to positively regulate Cd tolerance and accumulation in the transgenic Arabidopsis thaliana lines. Herein, transcriptome sequencing was performed to identify the differentially expressed genes involved in cadmium response between the wild-type (WT) and BnMYB2 overexpressed lines; 1598 differentially expressed genes (DEGs) were detected in the shoot. GO and KEGG analysis indicated that the majority of DEGs belonged to the categories of transcription factors, plant hormone signal transduction and nitrogen metabolism. The expression level of the Ib subgroup bHLH genes (AtbHLH38, AtbHLH39, AtbHLH100 and AtbHLH101) and nitrogen assimilation-related genes (AtNIA1, AtNIA2, AtNIR1 and AtASN2) were significantly higher than that of WT, accompanied with the positive changes in iron (Fe) and total nitrogen content in the shoot of BnMYB2 overexpression lines. Several DEGs belonging to the bZIP transcription factor family or SAUR family were also found up-regulated in the transgenic plants. These results provide important clues for elucidating how the molecular mechanisms of BnMYB2 regulate plant response to Cd stress.
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13
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Transcriptome and Metabolome Reveal the Molecular Mechanism of Barley Genotypes Underlying the Response to Low Nitrogen and Resupply. Int J Mol Sci 2023; 24:ijms24054706. [PMID: 36902137 PMCID: PMC10003240 DOI: 10.3390/ijms24054706] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/08/2022] [Revised: 02/16/2023] [Accepted: 02/27/2023] [Indexed: 03/05/2023] Open
Abstract
Nitrogen is one of the most important mineral elements for plant growth and development. Excessive nitrogen application not only pollutes the environment, but also reduces the quality of crops. However, are few studies on the mechanism of barley tolerance to low nitrogen at both the transcriptome and metabolomics levels. In this study, the nitrogen-efficient genotype (W26) and the nitrogen-sensitive genotype (W20) of barley were treated with low nitrogen (LN) for 3 days and 18 days, then treated with resupplied nitrogen (RN) from 18 to 21 days. Later, the biomass and the nitrogen content were measured, and RNA-seq and metabolites were analyzed. The nitrogen use efficiency (NUE) of W26 and W20 treated with LN for 21 days was estimated by nitrogen content and dry weight, and the values were 87.54% and 61.74%, respectively. It turned out to have a significant difference in the two genotypes under the LN condition. According to the transcriptome analysis, 7926 differentially expressed genes (DEGs) and 7537 DEGs were identified in the leaves of W26 and W20, respectively, and 6579 DEGs and 7128 DEGs were found in the roots of W26 and W20, respectively. After analysis of the metabolites, 458 differentially expressed metabolites (DAMs) and 425 DAMs were found in the leaves of W26 and W20, respectively, and 486 DAMs and 368 DAMs were found in the roots of W26 and W20, respectively. According to the KEGG joint analysis of DEGs and DAMs, it was discovered that glutathione (GSH) metabolism was the pathway of significant enrichment in the leaves of both W26 and W20. In this study, the metabolic pathways of nitrogen metabolism and GSH metabolism of barley under nitrogen were constructed based on the related DAMs and DEGs. In leaves, GSH, amino acids, and amides were the main identified DAMs, while in roots, GSH, amino acids, and phenylpropanes were mainly found DAMs. Finally, some nitrogen-efficient candidate genes and metabolites were selected based on the results of this study. The responses of W26 and W20 to low nitrogen stress were significantly different at the transcriptional and metabolic levels. The candidate genes that have been screened will be verified in future. These data not only provide new insights into how barley responds to LN, but also provide new directions for studying the molecular mechanisms of barley under abiotic stress.
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14
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Yuan X, Cui K, Chen Y, Xu W, Li P, He Y. Response of microbial community and biological nitrogen removal to the accumulation of nonylphenol in sequencing batch reactor. INTERNATIONAL JOURNAL OF ENVIRONMENTAL SCIENCE AND TECHNOLOGY : IJEST 2023; 20:1-12. [PMID: 36817166 PMCID: PMC9923645 DOI: 10.1007/s13762-023-04825-9] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 03/30/2022] [Revised: 08/23/2022] [Accepted: 02/02/2023] [Indexed: 06/18/2023]
Abstract
The widespread existence of nonylphenol in the environmental rendered from wastewater discharge has become a growing concern for its endocrine disrupting effects on microorganisms. In this study, the performance of nitrifying and denitrifying microbial community in a sequencing batch reactor (SBR) was investigated under different nonylphenol concentrations. The SBR was shown to be less effective in nitrogen removal at higher concentration of nonylphenol. Proteobacteria, Bacteroidetes, and Actinobacteria were characterized by 454 pyrosequencing as the dominant bacteria, nitrogen removal functional bacteria in these three phyla were inhibited by nonylphenol, and Proteobacteria and Actinobacteria were more sensitive to nonylphenol. With the accumulation of nonylphenol, the population of the most abundant denitrifying bacteria (Thauera spp.) and nitrifying bacteria (Nitrosomonas spp.) significantly reduced. Microbial diversity increased due to nonylphenol perturbation, which is indicated by the changes in microbial alpha diversity. Principal component analysis showed high similarity between microbial community in low and high concentration of nonylphenol, and the core genera involved in nitrogen removal had a low correlation with other genera shown in co-occurrence network. Moreover, linear discriminant analysis effect size analysis revealed intergroup differences in microorganisms. The mechanism of accumulated NP on the diversity and metabolism of the microbial community was examined. This paper established a theoretical foundation for the treatment of NP-containing wastewater and provided hints for further research about NP impact on biological nitrogen removal. Graphical abstract Supplementary Information The online version contains supplementary material available at 10.1007/s13762-023-04825-9.
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Affiliation(s)
- X. Yuan
- School of Resources and Environmental Engineering, Hefei University of Technology, Hefei, 246011 China
| | - K. Cui
- School of Resources and Environmental Engineering, Hefei University of Technology, Hefei, 246011 China
| | - Y. Chen
- School of Resources and Environmental Engineering, Hefei University of Technology, Hefei, 246011 China
| | - W. Xu
- Zhejiang Lab, Hangzhou, 310012 China
| | - P. Li
- School of Environmental Science and Engineering, Shanghai Jiao Tong University, Shanghai, 200240 China
| | - Y. He
- School of Environmental Science and Engineering, Shanghai Jiao Tong University, Shanghai, 200240 China
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15
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Cao L, Xu C, Sun Y, Niu C, Leng X, Hao B, Ma J, Liu Z, Xu Z, Yang C, Liu G. Genome-wide identification of glutamate synthase gene family and expression patterns analysis in response to carbon and nitrogen treatment in Populus. Gene 2023; 851:146996. [DOI: 10.1016/j.gene.2022.146996] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/12/2022] [Revised: 08/01/2022] [Accepted: 10/18/2022] [Indexed: 11/06/2022]
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16
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Duarte-Aké F, Márquez-López RE, Monroy-González Z, Borbolla-Pérez V, Loyola-Vargas VM. The source, level, and balance of nitrogen during the somatic embryogenesis process drive cellular differentiation. PLANTA 2022; 256:113. [PMID: 36367589 DOI: 10.1007/s00425-022-04009-8] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/26/2022] [Accepted: 10/03/2022] [Indexed: 06/16/2023]
Abstract
Since the discovery of somatic embryogenesis (SE), it has been evident that nitrogen (N) metabolism is essential during morphogenesis and cell differentiation. Usually, N is supplied to cultures in vitro in three forms, ammonium (NH4+), nitrate (NO3-), and amino N from amino acids (AAs). Although most plants prefer NO3- to NH4+, NH4+ is the primary form route to be assimilated. The balance of NO3- and NH4+ determines if the morphological differentiation process will produce embryos. That the N reduction of NO3- is needed for both embryo initiation and maturation is well-established in several models, such as carrot, tobacco, and rose. It is clear that N is indispensable for SE, but the mechanism that triggers the signal for embryo formation remains unknown. Here, we discuss recent studies that suggest an optimal endogenous concentration of auxin and cytokinin is closely related to N supply to plant tissue. From a molecular and biochemical perspective, we explain N's role in embryo formation, hypothesizing possible mechanisms that allow cellular differentiation by changing the nitrogen source.
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Affiliation(s)
- Fátima Duarte-Aké
- Centro de Investigación Científica de Yucatán, Unidad de Bioquímica y Biología Molecular de Plantas, Mérida, Yucatán, Mexico
| | - Ruth E Márquez-López
- Instituto Politécnico Nacional, Centro Interdisciplinario de Investigación para el Desarrollo Integral Regional, Unidad Oaxaca, Santa Cruz Xoxocotlán, C.P., 71230, Oaxaca, Oaxaca, Mexico
| | - Zurisadai Monroy-González
- Centro de Investigación Científica de Yucatán, Unidad de Bioquímica y Biología Molecular de Plantas, Mérida, Yucatán, Mexico
| | - Verónica Borbolla-Pérez
- Centro de Investigación Científica de Yucatán, Unidad de Bioquímica y Biología Molecular de Plantas, Mérida, Yucatán, Mexico
| | - Víctor M Loyola-Vargas
- Centro de Investigación Científica de Yucatán, Unidad de Bioquímica y Biología Molecular de Plantas, Mérida, Yucatán, Mexico.
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17
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Huang Y, Chen Y, Wen D, Zhao P, Li F, Li L, Du R, Shi H, Deng T, Du Y. Biochar-based molybdenum slow-release fertilizer enhances nitrogen assimilation in Chinese flowering cabbage (Brassica parachinensis). CHEMOSPHERE 2022; 303:134663. [PMID: 35447204 DOI: 10.1016/j.chemosphere.2022.134663] [Citation(s) in RCA: 4] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/13/2022] [Revised: 04/07/2022] [Accepted: 04/17/2022] [Indexed: 06/14/2023]
Abstract
Low molybdenum (Mo) bioavailability in acidic soil obstructs vegetable nitrogen assimilation and thus increases the health risk of vegetable ingestion due to nitrate accumulation. Constantly providing available Mo in acidic soil is a challenge for decreasing nitrate accumulation in vegetables. In this study, three Mo application methods, including biochar-based Mo slow-release fertilizer (Mo-biochar), seed dressing, and basal application, were investigated to enhance Mo bioavailability in acidic soil and nitrogen assimilation in Chinese flowering cabbage (Brassica parachinensis). The results showed that Mo-biochar constantly and sufficiently supplied Mo nutrients throughout the growing period of Brassica parachinensis, as evidenced by the soil available Mo, plant Mo uptake, and Mo values. The improved Mo supply was attributed to the alleviation of acidic soil (pH from 5.10 to 6.99) and the slow release of Mo adsorbed on biochar. Mo-biochar increased the nitrate reductase (NR) activity by 238.6% and glutamate dehydrogenase activity by 27.5%, indicating an enhancement of the rate-limiting steps of nitrogen assimilation, especially for nitrate reduction and amino acid synthesis. The increase in Mo-containing NR could be directly ascribed to the high level of Mo in Brassica parachinensis. Compared with the control, the nitrate content of Brassica parachinensis decreased by 42.9% due to the nitrate reduction induced by increased NR. Additionally, Mo-biochar was beneficial to vegetable growth and quality. In contrast, the transformation from NO3- to NH4+ was blocked with Mo seed dressing and basal application because of low Mo bioavailability in the soil, resulting in a high nitrate content in Brassica parachinensis. Conclusively, Mo-biochar can slowly release Mo and improve the neutral environment for Mo bioavailability, which is an effective strategy to mitigate the high nitrate accumulation of vegetables planted in acidic soil.
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Affiliation(s)
- Yongdong Huang
- Institute of Quality Standard and Monitoring Technology for Agro-products of Guangdong Academy of Agricultural Sciences, Guangzhou, 510640, PR China; Key Laboratory of Testing and Evaluation for Agro-product Safety and Quality, Ministry of Agriculture, Guangzhou, 510640, PR China
| | - Yongjian Chen
- Guangdong Agricultural Science Monitoring Technology Co., Ltd, Guangzhou, 510640, PR China
| | - Dian Wen
- Institute of Quality Standard and Monitoring Technology for Agro-products of Guangdong Academy of Agricultural Sciences, Guangzhou, 510640, PR China; Key Laboratory of Testing and Evaluation for Agro-product Safety and Quality, Ministry of Agriculture, Guangzhou, 510640, PR China
| | - Peihua Zhao
- Institute of Quality Standard and Monitoring Technology for Agro-products of Guangdong Academy of Agricultural Sciences, Guangzhou, 510640, PR China; Key Laboratory of Testing and Evaluation for Agro-product Safety and Quality, Ministry of Agriculture, Guangzhou, 510640, PR China
| | - Furong Li
- Institute of Quality Standard and Monitoring Technology for Agro-products of Guangdong Academy of Agricultural Sciences, Guangzhou, 510640, PR China; Key Laboratory of Testing and Evaluation for Agro-product Safety and Quality, Ministry of Agriculture, Guangzhou, 510640, PR China
| | - Lei Li
- Guangdong Agricultural Science Monitoring Technology Co., Ltd, Guangzhou, 510640, PR China
| | - Ruiying Du
- Institute of Quality Standard and Monitoring Technology for Agro-products of Guangdong Academy of Agricultural Sciences, Guangzhou, 510640, PR China; Key Laboratory of Testing and Evaluation for Agro-product Safety and Quality, Ministry of Agriculture, Guangzhou, 510640, PR China.
| | - Hanzhi Shi
- Institute of Quality Standard and Monitoring Technology for Agro-products of Guangdong Academy of Agricultural Sciences, Guangzhou, 510640, PR China; Key Laboratory of Testing and Evaluation for Agro-product Safety and Quality, Ministry of Agriculture, Guangzhou, 510640, PR China
| | - Tenghaobo Deng
- Institute of Quality Standard and Monitoring Technology for Agro-products of Guangdong Academy of Agricultural Sciences, Guangzhou, 510640, PR China; Key Laboratory of Testing and Evaluation for Agro-product Safety and Quality, Ministry of Agriculture, Guangzhou, 510640, PR China
| | - Yingqiong Du
- Institute of Quality Standard and Monitoring Technology for Agro-products of Guangdong Academy of Agricultural Sciences, Guangzhou, 510640, PR China; Key Laboratory of Testing and Evaluation for Agro-product Safety and Quality, Ministry of Agriculture, Guangzhou, 510640, PR China
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18
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Gong J, Zhang Z, Wang B, Shi J, Zhang W, Dong Q, Song L, Li Y, Liu Y. N addition rebalances the carbon and nitrogen metabolisms of Leymus chinensis through leaf N investment. PLANT PHYSIOLOGY AND BIOCHEMISTRY : PPB 2022; 185:221-232. [PMID: 35714430 DOI: 10.1016/j.plaphy.2022.06.001] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/08/2021] [Revised: 04/26/2022] [Accepted: 06/01/2022] [Indexed: 06/15/2023]
Abstract
Intensifying nitrogen (N) deposition disturbs the growth of grassland plants due to an imbalance between their carbon (C) and N metabolism. However, it's unclear how plant physiological strategies restore balance. We investigated the effects of multiple N addition levels (0-25 g N m-2 yr-1) on the coordination of C and N metabolism in a dominant grass (Leymus chinensis) in a semiarid grassland in northern China. To do so, we evaluated photosynthetic parameters, leaf N allocation, C- and N-based metabolites, and metabolic enzymes. We found that a moderate N level (10 g N m-2 yr-1) promoted carboxylation and electron transport by allocating more N to the photosynthetic apparatus and increasing ribulose bisphosphate carboxylase/oxygenase activity, thereby increasing photosynthetic capacity. The highest N level (25 g N m-2 yr-1) promoted N investment in nonphotosynthetic pathways and increased the free amino acids in the leaves. N addition stimulated the accumulation of C and N compounds across organs by activating sucrose phosphate synthase, nitrate reductase, and glutamine synthetase. This enhancement triggered a transformation of primary metabolites (nonstructural carbohydrates, proteins, amino acids) to secondary metabolites (flavonoids, phenols, and alkaloids) for temporary storage or as defense compounds. Citric acid, as the C skeleton for enhanced N metabolism, decreased significantly, and malic acid increased by catalysis of phosphoenolpyruvate carboxylase. Our findings show the adaptability of L. chinensis to different N-addition levels by adjusting its allocations of C and N metabolic compounds and confirm the roles of C and N coordination by grassland plants in these adaptations.
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Affiliation(s)
- Jirui Gong
- State Key Laboratory of Earth Surface Processes and Resource Ecology, School of Natural Resources, Faculty of Geographical Science, Beijing Normal University, No. 19 Xinjiekouwai Street, Haidian District, Beijing 100875, China.
| | - Zihe Zhang
- State Key Laboratory of Earth Surface Processes and Resource Ecology, School of Natural Resources, Faculty of Geographical Science, Beijing Normal University, No. 19 Xinjiekouwai Street, Haidian District, Beijing 100875, China.
| | - Biao Wang
- College of Materials Science and Engineering, College of Architecture and Urban Planning, Chongqing Jiaotong University, Chongqing, 400074, China.
| | - Jiayu Shi
- State Key Laboratory of Earth Surface Processes and Resource Ecology, School of Natural Resources, Faculty of Geographical Science, Beijing Normal University, No. 19 Xinjiekouwai Street, Haidian District, Beijing 100875, China.
| | - Weiyuan Zhang
- State Key Laboratory of Earth Surface Processes and Resource Ecology, School of Natural Resources, Faculty of Geographical Science, Beijing Normal University, No. 19 Xinjiekouwai Street, Haidian District, Beijing 100875, China.
| | - Qi Dong
- State Key Laboratory of Earth Surface Processes and Resource Ecology, School of Natural Resources, Faculty of Geographical Science, Beijing Normal University, No. 19 Xinjiekouwai Street, Haidian District, Beijing 100875, China.
| | - Liangyuan Song
- State Key Laboratory of Earth Surface Processes and Resource Ecology, School of Natural Resources, Faculty of Geographical Science, Beijing Normal University, No. 19 Xinjiekouwai Street, Haidian District, Beijing 100875, China.
| | - Ying Li
- State Key Laboratory of Earth Surface Processes and Resource Ecology, School of Natural Resources, Faculty of Geographical Science, Beijing Normal University, No. 19 Xinjiekouwai Street, Haidian District, Beijing 100875, China.
| | - Yingying Liu
- State Key Laboratory of Earth Surface Processes and Resource Ecology, School of Natural Resources, Faculty of Geographical Science, Beijing Normal University, No. 19 Xinjiekouwai Street, Haidian District, Beijing 100875, China.
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19
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Wen B, Gong X, Deng W, Chen X, Li D, Fu X, Li L, Tan Q. The apple GARP family gene MdHHO3 regulates the nitrate response and leaf senescence. FRONTIERS IN PLANT SCIENCE 2022; 13:932767. [PMID: 36017256 PMCID: PMC9398197 DOI: 10.3389/fpls.2022.932767] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 04/30/2022] [Accepted: 07/19/2022] [Indexed: 06/15/2023]
Abstract
The regulation of plant gene expression by nitrate is a complex regulatory process. Here, we identified 90 GARP family genes in apples by genome-wide analysis. As a member of the GARP gene family, the expression of MdHHO3 (Malus domestica HYPERSENSITIVITY TO LOW PHOSPHATE-ELICITED PRIMARY ROOT SHORTENING1 HOMOLOG 3) is upregulated under N (nitrogen) supply. The results of DNA-binding site analysis and electrophoretic mobility shift assays (EMSA) showed that MdHHO3 binds to the motif-containing GAATC. Furthermore, MdHHO3 binds to its promoter sequence and inhibits its activity. In addition, the overexpression of MdHHO3 in apple calli resulted in less accumulation of nitrate in 35S:MdHHO3-GFP calli and downregulated the expression of the nitrate transport-related genes but upregulated the expression of the nitrate assimilation-related genes. Similarly, the expression of the nitrate transport-related genes was downregulated and the expression of the nitrate assimilation-related genes was upregulated in MdHHO3 overexpression Arabidopsis and tobacco plants. Interaction experiments showed that MdHHO3 could bind to the promoter MdNRT2.1 (NITRATE TRANSPORTER 2.1) and negatively regulate its expression. Moreover, the exposure of MdHHO3-overexpressing Arabidopsis and tobacco to nitrate deficiency resulted in an early senescence phenotype as compared to the WT plants. These results show that MdHHO3 can not only negatively regulate nitrate accumulation in response to nitrate but also promote early leaf senescence under nitrate deficiency. This information may be useful to further reveal the mechanism of the nitrate response and demonstrates that nitrate deficiency induces leaf senescence in apples.
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Affiliation(s)
- Binbin Wen
- College of Horticulture Science and Engineering, Shandong Agricultural University, Tai’an, China
- State Key Laboratory of Crop Biology, Shandong Agricultural University, Tai’an, China
| | - Xingyao Gong
- College of Horticulture Science and Engineering, Shandong Agricultural University, Tai’an, China
- State Key Laboratory of Crop Biology, Shandong Agricultural University, Tai’an, China
| | - Wenpeng Deng
- College of Horticulture Science and Engineering, Shandong Agricultural University, Tai’an, China
- State Key Laboratory of Crop Biology, Shandong Agricultural University, Tai’an, China
| | - Xiude Chen
- College of Horticulture Science and Engineering, Shandong Agricultural University, Tai’an, China
- State Key Laboratory of Crop Biology, Shandong Agricultural University, Tai’an, China
- Shandong Collaborative Innovation Center for Fruit and Vegetable Production With High Quality and Efficiency, Shandong Agricultural University, Tai’an, China
| | - Dongmei Li
- College of Horticulture Science and Engineering, Shandong Agricultural University, Tai’an, China
- State Key Laboratory of Crop Biology, Shandong Agricultural University, Tai’an, China
- Shandong Collaborative Innovation Center for Fruit and Vegetable Production With High Quality and Efficiency, Shandong Agricultural University, Tai’an, China
| | - Xiling Fu
- College of Horticulture Science and Engineering, Shandong Agricultural University, Tai’an, China
- State Key Laboratory of Crop Biology, Shandong Agricultural University, Tai’an, China
- Shandong Collaborative Innovation Center for Fruit and Vegetable Production With High Quality and Efficiency, Shandong Agricultural University, Tai’an, China
| | - Ling Li
- College of Horticulture Science and Engineering, Shandong Agricultural University, Tai’an, China
- State Key Laboratory of Crop Biology, Shandong Agricultural University, Tai’an, China
- Shandong Collaborative Innovation Center for Fruit and Vegetable Production With High Quality and Efficiency, Shandong Agricultural University, Tai’an, China
| | - Qiuping Tan
- College of Horticulture Science and Engineering, Shandong Agricultural University, Tai’an, China
- State Key Laboratory of Crop Biology, Shandong Agricultural University, Tai’an, China
- Shandong Collaborative Innovation Center for Fruit and Vegetable Production With High Quality and Efficiency, Shandong Agricultural University, Tai’an, China
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20
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Liu L, Weng Y, Fang J, Zhao Z, Du S. Understanding the effect of GO on nitrogen assimilation in wheat through transcriptomics and metabolic process analysis. CHEMOSPHERE 2022; 296:134000. [PMID: 35192852 DOI: 10.1016/j.chemosphere.2022.134000] [Citation(s) in RCA: 8] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/13/2022] [Revised: 02/12/2022] [Accepted: 02/13/2022] [Indexed: 06/14/2023]
Abstract
The extensive use of graphene oxide (GO) has resulted in its inevitable entry into the environment. It has been established that GO is detrimental to nitrogen accumulation in plants, as nitrogen is one of the most important nutrient for plant growth. However, its influence on nitrogen assimilation has not yet been investigated comprehensively. Based on the analysis of transcriptomics and nitrogen metabolites, this study showed that 400 mg L-1 GO exposure downregulated most of the genes encoding nitrogen-assimilating enzymes, including nitrate reductase (NR), glutamine synthetase (GS), glutamate synthase (GOGAT), and glutamate dehydrogenase (GDH). The activities of the above enzymes in wheat roots were also reduced with GO addition, and the activities of NR and GS, the rate-limiting enzymes of nitrate and ammonium assimilation, were approximately 75% and 76% lower with 400 mg L-1 GO supply, respectively, compared to those upon control treatment. Correspondingly, GO appears to exert a negative effect on multiple nitrogen assimilation products, including nitrous nitrogen, ammonium nitrogen, glutamine, glutamate, and soluble protein. In summary, this study showed that GO has adverse effects on the nitrogen assimilation of plants, and NR and GS are the most affected sites. Our findings would provide deeper insights into the physiological and molecular mechanisms underlying GO phytotoxicity.
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Affiliation(s)
- Lijuan Liu
- Key Laboratory of Pollution Exposure and Health Intervention Technology of Zhejiang Province, Interdisciplinary Research Academy (IRA), Zhejiang Shuren University, Hangzhou, 310015, China
| | - Yineng Weng
- College of Environmental Science and Engineering, Zhejiang Gongshang University, Hangzhou, 310018, China
| | - Jin Fang
- College of Environmental Science and Engineering, Zhejiang Gongshang University, Hangzhou, 310018, China
| | - Zijing Zhao
- Key Laboratory of Pollution Exposure and Health Intervention Technology of Zhejiang Province, Interdisciplinary Research Academy (IRA), Zhejiang Shuren University, Hangzhou, 310015, China
| | - Shaoting Du
- Key Laboratory of Pollution Exposure and Health Intervention Technology of Zhejiang Province, Interdisciplinary Research Academy (IRA), Zhejiang Shuren University, Hangzhou, 310015, China.
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21
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Oszvald M, Hassall KL, Hughes D, Torres-Ballesteros A, Clark I, Riche AB, Heuer S. Genetic Diversity in Nitrogen Fertiliser Responses and N Gas Emission in Modern Wheat. FRONTIERS IN PLANT SCIENCE 2022; 13:816475. [PMID: 35646002 PMCID: PMC9137425 DOI: 10.3389/fpls.2022.816475] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/17/2021] [Accepted: 01/20/2022] [Indexed: 06/08/2023]
Abstract
Crops assimilate nitrogen (N) as ammonium via the glutamine synthetase/glutamate synthase (GS/GOGAT) pathway which is of central importance for N uptake and potentially represents a bottle neck for N fertiliser-use efficiency. The aim of this study was to assess whether genetic diversity for N-assimilation capacity exists in wheat and could be exploited for breeding. Wheat plants rapidly, within 6 h, responded to N application with an increase in GS activity. This was not accompanied by an increase in GS gene transcript abundance and a comparison of GS1 and GS2 protein models revealed a high degree of sequence conservation. N responsiveness amongst ten wheat varieties was assessed by measuring GS enzyme activity, leaf tissue ammonium, and by a leaf-disc assay as a proxy for apoplastic ammonia. Based on these data, a high-GS group showing an overall positive response to N could be distinguished from an inefficient, low-GS group. Subsequent gas emission measurements confirmed plant ammonia emission in response to N application and also revealed emission of N2O when N was provided as nitrate, which is in agreement with our current understanding that N2O is a by-product of nitrate reduction. Taken together, the data suggest that there is scope for improving N assimilation capacity in wheat and that further investigations into the regulation and role of GS-GOGAT in NH3 emission is justified. Likewise, emission of the climate gas N2O needs to be reduced, and future research should focus on assessing the nitrate reductase pathway in wheat and explore fertiliser management options.
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Affiliation(s)
- Maria Oszvald
- Plant Science Department, Rothamsted Research, Harpenden, United Kingdom
| | - Kirsty L. Hassall
- Computational and Analytical Sciences, Rothamsted Research, Harpenden, United Kingdom
| | - David Hughes
- Computational and Analytical Sciences, Rothamsted Research, Harpenden, United Kingdom
| | | | - Ian Clark
- Sustainable Agriculture Sciences, Rothamsted Research, Harpenden, United Kingdom
| | - Andrew B. Riche
- Plant Science Department, Rothamsted Research, Harpenden, United Kingdom
| | - Sigrid Heuer
- Plant Science Department, Rothamsted Research, Harpenden, United Kingdom
- Department of Crop Improvement and Resilience, NIAB, Cambridge, United Kingdom
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22
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Wei X, Yang Y, Yao J, Han J, Yan M, Zhang J, Shi Y, Wang J, Mu C. Improved Utilization of Nitrate Nitrogen Through Within-Leaf Nitrogen Allocation Trade-Offs in Leymus chinensis. FRONTIERS IN PLANT SCIENCE 2022; 13:870681. [PMID: 35574094 PMCID: PMC9096725 DOI: 10.3389/fpls.2022.870681] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 02/07/2022] [Accepted: 03/21/2022] [Indexed: 06/15/2023]
Abstract
The Sharply increasing atmospheric nitrogen (N) deposition may substantially impact the N availability and photosynthetic capacity of terrestrial plants. Determining the trade-off relationship between within-leaf N sources and allocation is therefore critical for understanding the photosynthetic response to nitrogen deposition in grassland ecosystems. We conducted field experiments to examine the effects of inorganic nitrogen addition (sole NH4 +, sole NO3 - and mixed NH4 +/NO3 -: 50%/50%) on N assimilation and allocation by Leymus chinensis. The leaf N allocated to the photosynthetic apparatus (NPSN) and chlorophyll content per unit area (Chlarea) were significantly positively correlated with the photosynthetic N-use efficiency (PNUE). The sole NO3 - treatment significantly increased the plant leaf PNUE and biomass by increasing the photosynthetic N allocation and Chlarea. Under the NO3 treatment, L. chinensis plants devoted more N to their bioenergetics and light-harvesting systems to increase electron transfer. Plants reduced the cell wall N allocation or increased their soluble protein concentrations to balance growth and defense under the NO3 treatment. In the sole NH4 + treatment, however, plants decreased their N allocation to photosynthetic components, but increased their N allocation to the cell wall and elsewhere. Our findings demonstrated that within-leaf N allocation optimization is a key adaptive mechanism by which plants maximize their PNUE and biomass under predicted future global changes.
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Affiliation(s)
- Xiaowei Wei
- Key Laboratory of Vegetation Ecology of the Ministry of Education, Jilin Songnen Grassland Ecosystem National Observation and Research Station, Institute of Grassland Science, Northeast Normal University, Changchun, China
- Key Laboratory for Plant Resources Science and Green Production, Jilin Normal University, Siping, China
| | - Yuheng Yang
- Key Laboratory of Vegetation Ecology of the Ministry of Education, Jilin Songnen Grassland Ecosystem National Observation and Research Station, Institute of Grassland Science, Northeast Normal University, Changchun, China
| | - Jialiang Yao
- Key Laboratory of Vegetation Ecology of the Ministry of Education, Jilin Songnen Grassland Ecosystem National Observation and Research Station, Institute of Grassland Science, Northeast Normal University, Changchun, China
| | - Jiayu Han
- Key Laboratory of Vegetation Ecology of the Ministry of Education, Jilin Songnen Grassland Ecosystem National Observation and Research Station, Institute of Grassland Science, Northeast Normal University, Changchun, China
| | - Ming Yan
- Key Laboratory of Vegetation Ecology of the Ministry of Education, Jilin Songnen Grassland Ecosystem National Observation and Research Station, Institute of Grassland Science, Northeast Normal University, Changchun, China
| | - Jinwei Zhang
- Key Laboratory of Vegetation Ecology of the Ministry of Education, Jilin Songnen Grassland Ecosystem National Observation and Research Station, Institute of Grassland Science, Northeast Normal University, Changchun, China
| | - Yujie Shi
- Key Laboratory of Vegetation Ecology of the Ministry of Education, Jilin Songnen Grassland Ecosystem National Observation and Research Station, Institute of Grassland Science, Northeast Normal University, Changchun, China
| | - Junfeng Wang
- Key Laboratory of Vegetation Ecology of the Ministry of Education, Jilin Songnen Grassland Ecosystem National Observation and Research Station, Institute of Grassland Science, Northeast Normal University, Changchun, China
| | - Chunsheng Mu
- Key Laboratory of Vegetation Ecology of the Ministry of Education, Jilin Songnen Grassland Ecosystem National Observation and Research Station, Institute of Grassland Science, Northeast Normal University, Changchun, China
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23
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Cao J, Zheng X, Xie D, Zhou H, Shao S, Zhou J. Autophagic pathway contributes to low-nitrogen tolerance by optimizing nitrogen uptake and utilization in tomato. HORTICULTURE RESEARCH 2022; 9:uhac068. [PMID: 35669705 PMCID: PMC9164271 DOI: 10.1093/hr/uhac068] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 11/08/2021] [Accepted: 03/09/2022] [Indexed: 06/15/2023]
Abstract
Autophagy is a primary process involved in the degradation and reuse of redundant or damaged cytoplasmic components in eukaryotes. Autophagy has been demonstrated to facilitate nutrient recycling and remobilization by delivering intracellular materials to the vacuole for degradation in plants under nutrient starvation. However, the role of autophagy in nitrogen (N) uptake and utilization remains unknown. Here, we report that the ATG6-dependent autophagic pathway regulates N utilization in tomato (Solanum lycopersicum) under low-nitrogen (LN) conditions. Autophagy-disrupted mutants exhibited weakened biomass production and N accumulation compared with wild-type (WT), while ATG6 overexpression promoted autophagy and biomass production under LN stress. The N content in atg6 mutants decreased while that in ATG6-overexpressing lines increased due to the control of N transporter gene expression in roots under LN conditions. Furthermore, ATG6-dependent autophagy enhanced N assimilation efficiency and protein production in leaves. Nitrate reductase and nitrite reductase activities and expression were compromised in atg6 mutants but were enhanced in ATG6-overexpressing plants under LN stress. Moreover, ATG6-dependent autophagy increased plant carbon fixation and photosynthetic capacity. The quantum yield of photosystem II, photosynthetic N use efficiency and photosynthetic protein accumulation were compromised in atg6 mutants but were restored in ATG6-overexpressing plants. A WT scion grafted onto atg6 mutant rootstock and an atg6 scion grafted onto WT rootstock both exhibited inhibited LN-induced autophagy and N uptake and utilization. Thus, ATG6-dependent autophagy regulates not only N uptake and utilization as well as carbon assimilation but also nutrient recycling and remobilization in tomato plants experiencing LN stress.
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Affiliation(s)
- Jiajian Cao
- College of Horticulture, Hunan Agricultural University, Nonda Road 1, Changsha, 410128, China
- Department of Horticulture/Zhejiang Provincial Key Laboratory of Horticultural Plant Integrative Biology, Zhejiang University, Yuhangtang Road 866, Hangzhou, 310058, China
| | - Xuelian Zheng
- Department of Horticulture/Zhejiang Provincial Key Laboratory of Horticultural Plant Integrative Biology, Zhejiang University, Yuhangtang Road 866, Hangzhou, 310058, China
| | - Dongling Xie
- Department of Horticulture/Zhejiang Provincial Key Laboratory of Horticultural Plant Integrative Biology, Zhejiang University, Yuhangtang Road 866, Hangzhou, 310058, China
| | - Hui Zhou
- Department of Horticulture/Zhejiang Provincial Key Laboratory of Horticultural Plant Integrative Biology, Zhejiang University, Yuhangtang Road 866, Hangzhou, 310058, China
| | - Shujun Shao
- Department of Horticulture/Zhejiang Provincial Key Laboratory of Horticultural Plant Integrative Biology, Zhejiang University, Yuhangtang Road 866, Hangzhou, 310058, China
- Key Laboratory of Horticultural Plants Growth, Development and Quality Improvement, Agricultural Ministry of China, Yuhangtang Road 866, Hangzhou, 310058, China
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24
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Zhang X, Ma Q, Li F, Ding Y, Yi Y, Zhu M, Ding J, Li C, Guo W, Zhu X. Transcriptome Analysis Reveals Different Responsive Patterns to Nitrogen Deficiency in Two Wheat Near-Isogenic Lines Contrasting for Nitrogen Use Efficiency. BIOLOGY 2021; 10:biology10111126. [PMID: 34827119 PMCID: PMC8614915 DOI: 10.3390/biology10111126] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 09/18/2021] [Revised: 10/29/2021] [Accepted: 11/01/2021] [Indexed: 12/30/2022]
Abstract
Simple Summary Nitrogen (N) limitation is the key factor for wheat production worldwide. Therefore, the development of genotypes with improved nitrogen use efficiency (NUE) is a prerequisite for sustainable and productive agriculture. Exploring the molecular mechanisms of low N stress tolerance is significant for breeding wheat cultivars with high NUE. To clarify the underlying molecular mechanisms of enhanced resilience to low N in high-NUE wheat, we performed an RNA sequencing (RNA-seq) analysis. In the current research, two wheat near-isogenic lines (NILs) differing dramatically in NUE were used to measure gene expression differences under different N treatments. There was a dramatic difference between two wheat NILs in response to N deficiency at the transcriptional level, and the classification of identified candidate genes may provide new valuable insights into the resilience mechanism of wheat. Abstract The development of crop cultivars with high nitrogen use efficiency (NUE) under low-N fertilizer inputs is imperative for sustainable agriculture. However, there has been little research on the molecular mechanisms underlying enhanced resilience to low N in high-NUE plants. The comparison of the transcriptional responses of genotypes contrasting for NUE will facilitate an understanding of the key molecular mechanism of wheat resilience to low-N stress. In the current study, the RNA sequencing (RNA-seq) technique was employed to investigate the genotypic difference in response to N deficiency between two wheat NILs (1Y, high-NUE, and 1W, low-NUE). In our research, high- and low-NUE wheat NILs showed different patterns of gene expression under N-deficient conditions, and these N-responsive genes were classified into two major classes, including “frontloaded genes” and “relatively upregulated genes”. In total, 103 and 45 genes were identified as frontloaded genes in high-NUE and low-NUE wheat, respectively. In summary, our study might provide potential directions for further understanding the molecular mechanism of high-NUE genotypes adapting to low-N stress.
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Affiliation(s)
- Xinbo Zhang
- Jiangsu Key Laboratory of Crop Genetics and Physiology/Jiangsu Key Laboratory of Crop Cultivation and Physiology, Agricultural College of Yangzhou University, Yangzhou 225009, China; (X.Z.); (Q.M.); (F.L.); (Y.D.); (M.Z.); (J.D.); (C.L.); (W.G.)
| | - Quan Ma
- Jiangsu Key Laboratory of Crop Genetics and Physiology/Jiangsu Key Laboratory of Crop Cultivation and Physiology, Agricultural College of Yangzhou University, Yangzhou 225009, China; (X.Z.); (Q.M.); (F.L.); (Y.D.); (M.Z.); (J.D.); (C.L.); (W.G.)
| | - Fujian Li
- Jiangsu Key Laboratory of Crop Genetics and Physiology/Jiangsu Key Laboratory of Crop Cultivation and Physiology, Agricultural College of Yangzhou University, Yangzhou 225009, China; (X.Z.); (Q.M.); (F.L.); (Y.D.); (M.Z.); (J.D.); (C.L.); (W.G.)
| | - Yonggang Ding
- Jiangsu Key Laboratory of Crop Genetics and Physiology/Jiangsu Key Laboratory of Crop Cultivation and Physiology, Agricultural College of Yangzhou University, Yangzhou 225009, China; (X.Z.); (Q.M.); (F.L.); (Y.D.); (M.Z.); (J.D.); (C.L.); (W.G.)
| | - Yuan Yi
- Jiangsu Xuhuai Regional Institute of Agricultural Science, Xuzhou 221131, China;
| | - Min Zhu
- Jiangsu Key Laboratory of Crop Genetics and Physiology/Jiangsu Key Laboratory of Crop Cultivation and Physiology, Agricultural College of Yangzhou University, Yangzhou 225009, China; (X.Z.); (Q.M.); (F.L.); (Y.D.); (M.Z.); (J.D.); (C.L.); (W.G.)
- Co-Innovation Center for Modern Production Technology of Grain Crops, Yangzhou University, Yangzhou 225009, China
| | - Jinfeng Ding
- Jiangsu Key Laboratory of Crop Genetics and Physiology/Jiangsu Key Laboratory of Crop Cultivation and Physiology, Agricultural College of Yangzhou University, Yangzhou 225009, China; (X.Z.); (Q.M.); (F.L.); (Y.D.); (M.Z.); (J.D.); (C.L.); (W.G.)
- Co-Innovation Center for Modern Production Technology of Grain Crops, Yangzhou University, Yangzhou 225009, China
| | - Chunyan Li
- Jiangsu Key Laboratory of Crop Genetics and Physiology/Jiangsu Key Laboratory of Crop Cultivation and Physiology, Agricultural College of Yangzhou University, Yangzhou 225009, China; (X.Z.); (Q.M.); (F.L.); (Y.D.); (M.Z.); (J.D.); (C.L.); (W.G.)
- Co-Innovation Center for Modern Production Technology of Grain Crops, Yangzhou University, Yangzhou 225009, China
| | - Wenshan Guo
- Jiangsu Key Laboratory of Crop Genetics and Physiology/Jiangsu Key Laboratory of Crop Cultivation and Physiology, Agricultural College of Yangzhou University, Yangzhou 225009, China; (X.Z.); (Q.M.); (F.L.); (Y.D.); (M.Z.); (J.D.); (C.L.); (W.G.)
- Co-Innovation Center for Modern Production Technology of Grain Crops, Yangzhou University, Yangzhou 225009, China
| | - Xinkai Zhu
- Jiangsu Key Laboratory of Crop Genetics and Physiology/Jiangsu Key Laboratory of Crop Cultivation and Physiology, Agricultural College of Yangzhou University, Yangzhou 225009, China; (X.Z.); (Q.M.); (F.L.); (Y.D.); (M.Z.); (J.D.); (C.L.); (W.G.)
- Co-Innovation Center for Modern Production Technology of Grain Crops, Yangzhou University, Yangzhou 225009, China
- Joint International Research Laboratory of Agriculture and Agri-Product Safety, The Ministry of Education of China, Yangzhou University, Yangzhou 225009, China
- Correspondence:
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25
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Chen Z, Niu J, Guo Z, Sui X, Xu N, Kareem HA, Hassan MU, Zhang Q, Cui J, Wang Q. Integrating transcriptome and physiological analyses to elucidate the essential biological mechanisms of graphene phytotoxicity of alfalfa (Medicago sativa L.). ECOTOXICOLOGY AND ENVIRONMENTAL SAFETY 2021; 220:112348. [PMID: 34015633 DOI: 10.1016/j.ecoenv.2021.112348] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/30/2021] [Revised: 05/10/2021] [Accepted: 05/12/2021] [Indexed: 06/12/2023]
Abstract
The phytotoxicity of nanoparticles has attracted considerable interest, given the broad applications of nanomaterials in different fields. Alfalfa (Medicago sativa L.) is a major forage crop grown worldwide with a high protein content. The molecular regulation mechanisms involved in nanomaterial-treated alfalfa were examined in this research. In our lab, 18 cDNA libraries of Golden Empress (GE) and Bara 310SC (SC) under control (CK), middle (10 g kg-1)- and high (20 g kg-1)-graphene stress treatments were constructed in 2019. All clean reads were matched to the reference Medicago_truncatula genome, the mapping ratio was higher than 50%, and a total of 3946 differentially expressed genes (DEGs) were obtained. The number of DEGs that reflect transcriptional activity is proportional to the degree of stress. For example, 1241/610 and 1794/1422 DEGs were identified as significant in the leaves of GE/SC under mid- and high-graphene treatment, respectively. Furthermore, GO analysis of the DEGs annotated in some significant biochemical process terms included 'response to abiotic stimulus', 'oxidation-reduction process', 'protein kinase activity', and 'oxidoreductase activity'. KEGG pathway analysis of the DEGs revealed strongly mediated graphene-responsive genes in alfalfa mainly linked to the 'biosynthesis of amino acids', 'isoflavonoid biosynthesis', 'linoleic acid metabolism', and 'phenylpropanoid biosynthesis' pathways. In addition, hundreds of DEGs, including photosynthetic, antioxidant enzyme, nitrogen metabolism, and metabolic sucrose and starch genes, have been identified as potentially involved in the response to graphene. Physiological findings revealed that enzymes related to the metabolism of nitrogen play a crucial role in the adaptation of graphene stress to alfalfa. Ultimately, in response to graphene stress, a preliminary regulatory mechanism was proposed for the self-protective mechanism of alfalfa, which helps to explain the phytotoxicity of the molecular mechanism of nanoparticle-treated crops.
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Affiliation(s)
- Zhao Chen
- College of Grassland Agriculture, Northwest A&F University, Yangling 712100, Shaanxi Province, China
| | - Junpeng Niu
- College of Grassland Agriculture, Northwest A&F University, Yangling 712100, Shaanxi Province, China
| | - Zhipeng Guo
- College of Grassland Agriculture, Northwest A&F University, Yangling 712100, Shaanxi Province, China
| | - Xin Sui
- College of Grassland Agriculture, Northwest A&F University, Yangling 712100, Shaanxi Province, China
| | - Nan Xu
- College of Grassland Agriculture, Northwest A&F University, Yangling 712100, Shaanxi Province, China
| | - Hafiz Abdul Kareem
- College of Grassland Agriculture, Northwest A&F University, Yangling 712100, Shaanxi Province, China
| | - Mahmood Ul Hassan
- College of Grassland Agriculture, Northwest A&F University, Yangling 712100, Shaanxi Province, China
| | - Quan Zhang
- Jiuquan Daye Seed Industry Co. Ltd., Jiefang Road 325#, Suzhouqu, Jiuquan 735000, Gansu Province, China
| | - Jian Cui
- College of Life Science, Northwest A&F University, Yangling 712100, Shaanxi Province, China
| | - Quanzhen Wang
- College of Grassland Agriculture, Northwest A&F University, Yangling 712100, Shaanxi Province, China.
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26
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Kaya C, Ugurlar F, Ashraf M, Noureldeen A, Darwish H, Ahmad P. Methyl Jasmonate and Sodium Nitroprusside Jointly Alleviate Cadmium Toxicity in Wheat ( Triticum aestivum L.) Plants by Modifying Nitrogen Metabolism, Cadmium Detoxification, and AsA-GSH Cycle. FRONTIERS IN PLANT SCIENCE 2021; 12:654780. [PMID: 34421936 PMCID: PMC8374870 DOI: 10.3389/fpls.2021.654780] [Citation(s) in RCA: 17] [Impact Index Per Article: 5.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/17/2021] [Accepted: 04/21/2021] [Indexed: 05/18/2023]
Abstract
The principal intent of the investigation was to examine the influence of joint application of methyl jasmonate (MeJA, 10 μM) and a nitric oxide-donor sodium nitroprusside (SNP, 100 μM) to wheat plants grown under cadmium (Cd as CdCl2, 100 μM) stress. Cd stress suppressed plant growth, chlorophylls (Chl), and PSII maximum efficiency (F v /F m ), but it elevated leaf and root Cd, and contents of leaf proline, phytochelatins, malondialdehyde, and hydrogen peroxide, as well as the activity of lipoxygenase. MeJA and SNP applied jointly or singly improved the concentrations of key antioxidant biomolecules, e.g., reduced glutathione and ascorbic acid and the activities of the key oxidative defense system enzymes such as catalase, superoxide dismutase, dehydroascorbate reductase, glutathione S-transferase, and glutathione reductase. Exogenously applied MeJA and SNP jointly or singly also improved nitrogen metabolism by activating the activities of glutamine synthetase, glutamate synthase, and nitrate and nitrite reductases. Compared with individual application of MeJA or SNP, the combined application of both showed better effect in terms of improving plant growth and key metabolic processes and reducing tissue Cd content, suggesting a putative interactive role of both compounds in alleviating Cd toxicity in wheat plants. MAIN FINDINGS The main findings are that exogenous application of methyl jasmonate and nitric oxide-donor sodium nitroprusside alleviated the cadmium (Cd)-induced adverse effects on growth of wheat plants grown under Cd by modulating key physiological processes and up-regulating enzymatic antioxidants and the ascorbic acid-glutathione cycle-related enzymes.
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Affiliation(s)
- Cengiz Kaya
- Soil Science and Plant Nutrition Department, Harran University, Sanliurfa, Turkey
| | - Ferhat Ugurlar
- Soil Science and Plant Nutrition Department, Harran University, Sanliurfa, Turkey
| | - Muhammad Ashraf
- Department of Botany, University of Agriculture, Faisalabad, Pakistan
| | - Ahmed Noureldeen
- Department of Biology, College of Sciences, Taif University, Taif, Saudi Arabia
| | - Hadeer Darwish
- Department of Biotechnology, College of Sciences, Taif University, Taif, Saudi Arabia
| | - Parvaiz Ahmad
- Department of Botany, S.P. College Srinagar, Jammu and Kashmir, India
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27
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Imran M, Hussain S, Rana MS, Saleem MH, Rasul F, Ali KH, Potcho MP, Pan S, Duan M, Tang X. Molybdenum improves 2-acetyl-1-pyrroline, grain quality traits and yield attributes in fragrant rice through efficient nitrogen assimilation under cadmium toxicity. ECOTOXICOLOGY AND ENVIRONMENTAL SAFETY 2021; 211:111911. [PMID: 33453638 DOI: 10.1016/j.ecoenv.2021.111911] [Citation(s) in RCA: 41] [Impact Index Per Article: 13.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/16/2020] [Revised: 12/15/2020] [Accepted: 01/05/2021] [Indexed: 05/22/2023]
Abstract
Cadmium (Cd) toxicity causes severe perturbations in nitrogen (N) uptake and assimilation, and thereby interrupts normal plant growth. Molybdenum (Mo), a necessary trace element, plays important roles in N metabolism through regulating N assimilatory enzymes activities and expressions in higher plants. Taking this into account, a pot experiment was performed to explore the role of Mo in alleviating Cd-induced inhibitory effects on physio-biochemical processes, N metabolism, yield attributes and grain quality characters of two fragrant rice cultivars; Guixiangzhan and Meixiangzhan-2. Both the fragrant rice cultivars were treated with two levels of each Cd concentrations (0 and 100 mg/kg) and Mo treatments (0 and 0.15 mg/kg). The results revealed that Cd toxicity significantly reduced (p < 0.05) plant dry biomass, gaseous exchange attributes, chlorophyll contents, N utilizing and assimilatory enzymes activities, 2-acetyl-1-pyrroline (2AP) contents and grain yield in both cultivars; however, more severe inhibitions were observed in Meixiangzhan-2 than Guixiangzhan. Nevertheless, Mo application alleviated Cd stress and enhanced 2AP content and grain yield by 75.05% and 67.94% in Guixiangzhan and 87.71% and 83.51% in Meixiangzhan-2, respectively compared with no Mo application. Moreover, Mo application improved photosynthesis, chloroplast configuration, soluble protein and proline contents and also strengthened the N assimilatory pathway through efficient NO3- utilization, higher nitrate reductase, nitrite reductase, glutamine synthetase and glutamate synthase activities and transcript levels under Cd stress. Collectively, our results imply that Mo-induced enhancement in N utilization and assimilation improved yield and grain quality characters of fragrant rice cultivars under Cd stress.
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Affiliation(s)
- Muhammad Imran
- State Key Laboratory for Conservation and Utilization of Subtropical Agro-bioresources, College of Agriculture, South China Agricultural University, Guangzhou 510642, PR China; Scientific Observing and Experimental Station of Crop Cultivation in South China, Ministry of Agriculture and Rural Affairs, Guangzhou 510642, PR China; Guangzhou Key Laboratory for Science and Technology of Fragrant Rice, Guangzhou 510642, PR China
| | - Saddam Hussain
- Department of Agronomy, University of Agriculture, Faisalabad, Punjab 38040, Pakistan
| | - Muhammad Shoaib Rana
- Key Laboratory of Arable Land Conservation (Middle and Lower Reaches of Yangtze River), Ministry of Agriculture and Rural Affairs, Huazhong Agricultural University, Wuhan 430070, PR China
| | - Muhammad Hamzah Saleem
- College of Plant Science and Technology, Huazhong Agricultural University, Wuhan 430070, PR China
| | - Fahd Rasul
- Department of Agronomy, University of Agriculture, Faisalabad, Punjab 38040, Pakistan
| | - Kanwar Haris Ali
- State Key Laboratory for Conservation and Utilization of Subtropical Agro-bioresources, College of Agriculture, South China Agricultural University, Guangzhou 510642, PR China; Scientific Observing and Experimental Station of Crop Cultivation in South China, Ministry of Agriculture and Rural Affairs, Guangzhou 510642, PR China; Guangzhou Key Laboratory for Science and Technology of Fragrant Rice, Guangzhou 510642, PR China
| | - Mouloumdema Pouwedeou Potcho
- State Key Laboratory for Conservation and Utilization of Subtropical Agro-bioresources, College of Agriculture, South China Agricultural University, Guangzhou 510642, PR China; Scientific Observing and Experimental Station of Crop Cultivation in South China, Ministry of Agriculture and Rural Affairs, Guangzhou 510642, PR China; Guangzhou Key Laboratory for Science and Technology of Fragrant Rice, Guangzhou 510642, PR China
| | - Shenggang Pan
- State Key Laboratory for Conservation and Utilization of Subtropical Agro-bioresources, College of Agriculture, South China Agricultural University, Guangzhou 510642, PR China; Scientific Observing and Experimental Station of Crop Cultivation in South China, Ministry of Agriculture and Rural Affairs, Guangzhou 510642, PR China; Guangzhou Key Laboratory for Science and Technology of Fragrant Rice, Guangzhou 510642, PR China
| | - Meiyang Duan
- State Key Laboratory for Conservation and Utilization of Subtropical Agro-bioresources, College of Agriculture, South China Agricultural University, Guangzhou 510642, PR China; Scientific Observing and Experimental Station of Crop Cultivation in South China, Ministry of Agriculture and Rural Affairs, Guangzhou 510642, PR China; Guangzhou Key Laboratory for Science and Technology of Fragrant Rice, Guangzhou 510642, PR China
| | - Xiangru Tang
- State Key Laboratory for Conservation and Utilization of Subtropical Agro-bioresources, College of Agriculture, South China Agricultural University, Guangzhou 510642, PR China; Scientific Observing and Experimental Station of Crop Cultivation in South China, Ministry of Agriculture and Rural Affairs, Guangzhou 510642, PR China; Guangzhou Key Laboratory for Science and Technology of Fragrant Rice, Guangzhou 510642, PR China.
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Yang J, Yin Y, Yu D, He L, Shen S. Activation of MAPK signaling in response to nitrogen deficiency in Ulva prolifera (Chlorophyta). ALGAL RES 2021. [DOI: 10.1016/j.algal.2020.102153] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/12/2022]
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Wen B, Xiao W, Mu Q, Li D, Chen X, Wu H, Li L, Peng F. How does nitrate regulate plant senescence? PLANT PHYSIOLOGY AND BIOCHEMISTRY : PPB 2020; 157:60-69. [PMID: 33091797 DOI: 10.1016/j.plaphy.2020.08.041] [Citation(s) in RCA: 24] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/27/2020] [Revised: 08/21/2020] [Accepted: 08/23/2020] [Indexed: 05/19/2023]
Abstract
Nitrogen is an essential macronutrient for plant growth and development and plays an important role in the whole life process of plants. Nitrogen is an important component of amino acids, chlorophyll, plant hormones and secondary metabolites. Nitrogen deficiency leads to early senescence in plants, which is accompanied by changes in gene expression, metabolism, growth, development, and physiological and biochemical traits, which ensures efficient nitrogen recycling and enhances the plant's tolerance to low nitrogen. Therefore, it is very important to understand the adaptation mechanisms of plants under nitrogen deficiency for the efficient utilization of nitrogen and gene regulation. With the popularization of molecular biology, bioinformatics and transgenic technology, the metabolic pathways of nitrogen-deficient plants have been verified, and important progress has been made. However, how the responses of plants to nitrogen deficiency affect the biological processes of the plants is not well understood. The current research also cannot completely explain how the metabolic pathways identified show other reactions or phenotypes through interactions or cascades after nitrogen inhibition. Nitrate is the main form of nitrogen absorption. In this review, we discuss the role of nitrate in plant senescence. Understanding how nitrate inhibition affects nitrate absorption, transport, and assimilation; chlorophyll synthesis; photosynthesis; anthocyanin synthesis; and plant hormone synthesis is key to sustainable agriculture.
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Affiliation(s)
- Binbin Wen
- College of Horticulture Science and Engineering, Shandong Agricultural University, 61 Daizong Road, Tai'an, 271018, China; State Key Laboratory of Crop Biology, Shandong Agricultural University, 61 Daizong Road, Tai'an, 271018, China
| | - Wei Xiao
- College of Horticulture Science and Engineering, Shandong Agricultural University, 61 Daizong Road, Tai'an, 271018, China; State Key Laboratory of Crop Biology, Shandong Agricultural University, 61 Daizong Road, Tai'an, 271018, China
| | - Qin Mu
- College of Horticulture, Nanjing Agricultural University, 1 Weigang, Nanjing, 210095, China
| | - Dongmei Li
- College of Horticulture Science and Engineering, Shandong Agricultural University, 61 Daizong Road, Tai'an, 271018, China; State Key Laboratory of Crop Biology, Shandong Agricultural University, 61 Daizong Road, Tai'an, 271018, China
| | - Xiude Chen
- College of Horticulture Science and Engineering, Shandong Agricultural University, 61 Daizong Road, Tai'an, 271018, China; State Key Laboratory of Crop Biology, Shandong Agricultural University, 61 Daizong Road, Tai'an, 271018, China
| | - Hongyu Wu
- College of Horticulture Science and Engineering, Shandong Agricultural University, 61 Daizong Road, Tai'an, 271018, China; State Key Laboratory of Crop Biology, Shandong Agricultural University, 61 Daizong Road, Tai'an, 271018, China
| | - Ling Li
- College of Horticulture Science and Engineering, Shandong Agricultural University, 61 Daizong Road, Tai'an, 271018, China; State Key Laboratory of Crop Biology, Shandong Agricultural University, 61 Daizong Road, Tai'an, 271018, China.
| | - Futian Peng
- College of Horticulture Science and Engineering, Shandong Agricultural University, 61 Daizong Road, Tai'an, 271018, China; State Key Laboratory of Crop Biology, Shandong Agricultural University, 61 Daizong Road, Tai'an, 271018, China.
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30
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Yu X, Wang L, Ran L, Chen X, Sheng J, Yang Y, Wu Y, Chen G, Xiong F. New insights into the mechanism of storage protein biosynthesis in wheat caryopsis under different nitrogen levels. PROTOPLASMA 2020; 257:1289-1308. [PMID: 32405873 DOI: 10.1007/s00709-020-01489-x] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/28/2019] [Accepted: 02/12/2020] [Indexed: 06/11/2023]
Abstract
Effect of different nitrogen levels (0, 150, and 300 kg hm-2) at booting stage on storage protein biosynthesis and processing quality of wheat was investigated using microstructural and ultrastructural observation, RNA sequencing, and quality analysis in this study. The results showed that the storage protein genes encoding ω- and γ-gliadin and low molecular weight glutenin subunit were upregulated at N150, and the genes encoding α- or β-gliadin and avenin-like protein were upregulated at N300. Two nitrogen levels induced expression of some interesting regulating genes, such as USE1, STX1B_2_3, SEC23, SEC24, SEC61A, HSP A1_8, HSP20, and HSP90B/TRA1. These regulatory genes were enriched in the KEGG pathway protein export, SNARE interactions in vesicular transport, and protein processing in endoplasmic reticulum. The amount, morphology, and accumulation pattern of protein body in four different endosperm regions in developing caryopsis show different response to N150 and N300, of which N300 had greater influence than N150. N150 and N300 both enhanced the contents of protein components, endosperm fullness, grain hardness, and parameters of processing quality, with the latter showing a greater degree of influence. Contrary to the accumulation pattern of protein body, N300 reduced the ratio of the amount of starch granules to the area ratio of protein body to starch granule. Results suggested that the difference of different nitrogen levels affecting storage protein biosynthesis might be through affecting the expression of the encoding and regulating gene of storage protein.
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Affiliation(s)
- Xurun Yu
- Jiangsu Key Laboratory of Crop Genetics and Physiology/Co-Innovation Center for Modern Production Technology of Grain Crops, Joint International Research Laboratory of Agriculture and Agri-Product Safety of Ministry of Education of China, Yangzhou University, Yangzhou, 225009, China
| | - Leilei Wang
- Jiangsu Key Laboratory of Crop Genetics and Physiology/Co-Innovation Center for Modern Production Technology of Grain Crops, Joint International Research Laboratory of Agriculture and Agri-Product Safety of Ministry of Education of China, Yangzhou University, Yangzhou, 225009, China
| | - Liping Ran
- Guangling College of Yangzhou University, Yangzhou, China
| | - Xinyu Chen
- Jiangsu Key Laboratory of Crop Genetics and Physiology/Co-Innovation Center for Modern Production Technology of Grain Crops, Joint International Research Laboratory of Agriculture and Agri-Product Safety of Ministry of Education of China, Yangzhou University, Yangzhou, 225009, China
| | - Jieyue Sheng
- Jiangsu Key Laboratory of Crop Genetics and Physiology/Co-Innovation Center for Modern Production Technology of Grain Crops, Joint International Research Laboratory of Agriculture and Agri-Product Safety of Ministry of Education of China, Yangzhou University, Yangzhou, 225009, China
| | - Yang Yang
- Jiangsu Key Laboratory of Crop Genetics and Physiology/Co-Innovation Center for Modern Production Technology of Grain Crops, Joint International Research Laboratory of Agriculture and Agri-Product Safety of Ministry of Education of China, Yangzhou University, Yangzhou, 225009, China
| | - Yunfei Wu
- Jiangsu Key Laboratory of Crop Genetics and Physiology/Co-Innovation Center for Modern Production Technology of Grain Crops, Joint International Research Laboratory of Agriculture and Agri-Product Safety of Ministry of Education of China, Yangzhou University, Yangzhou, 225009, China
| | - Gang Chen
- Jiangsu Key Laboratory of Crop Genetics and Physiology/Co-Innovation Center for Modern Production Technology of Grain Crops, Joint International Research Laboratory of Agriculture and Agri-Product Safety of Ministry of Education of China, Yangzhou University, Yangzhou, 225009, China
| | - Fei Xiong
- Jiangsu Key Laboratory of Crop Genetics and Physiology/Co-Innovation Center for Modern Production Technology of Grain Crops, Joint International Research Laboratory of Agriculture and Agri-Product Safety of Ministry of Education of China, Yangzhou University, Yangzhou, 225009, China.
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31
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Li P, Zhang Y, Meng Q, Liu Y, Tuyiringire D, Chen Z, Liang S. Trichloroethylene inhibits nitrogen transformation and microbial community structure in Mollisol. ECOTOXICOLOGY (LONDON, ENGLAND) 2020; 29:801-813. [PMID: 32445014 DOI: 10.1007/s10646-020-02230-3] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Accepted: 05/05/2020] [Indexed: 06/11/2023]
Abstract
Trichloroethylene (TCE) is the most ubiquitous halogenated organic pollutant in the environment, it is one of the 129 priority control pollutants. In order to clarify the influence of TCE on microorganisms and nitrogen transformation in Mollisol is the core purpose of this study. Results showed that 10 mg kg-1 TCE is the concentration limit of ammonification in Mollisol. When the concentration of TCE reached 10 mg kg-1 and the effect lasted for over 7 days, the process of ammonia oxidation to nitric acid in Mollisol will be affected. TCE affected the process of nitrate (NO3-) transformation into nitrite (NO2-) by affecting the activity of nitrate reductase, thereby affected the denitrification process in soil. When the concentration of TCE is more than 10 mg kg-1 it reduced the ability of soil microorganisms to obtain nitrogen, thereby affecting soil nitrogen transformation. RDA (Redundancy analysis) showed that the activity of nitrate reductase and the number of nitrifying bacteria and denitrifying bacteria in soil was negatively correlated with the incubation of TCE. In addition, soil nitrate reductase, nitrite reductase, peroxidase activity, ammonifying bacteria, nitrifying bacteria and denitrifying bacteria were negatively correlated with TCE concentration. Beyond that PICRUSt (Phylogenetic Investigation of Communities by Reconstruction of Unobserved States) of functional gene structure depend on KEGG (Kyoto Encyclopedia of Genes and Genomes) showed that 20 mg kg-1 TCE significantly inhibited the metabolism of energy and other substances in Mollisol. Based on the above, it is found that TCE significantly affected nitrification and denitrification in Mollisol, thus the nitrogen transformation in Mollisol was affected by TCE contamination.
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Affiliation(s)
- Pengfei Li
- College of Resources and Environment, Northeast Agricultural University, 150030, Harbin, China
- College of Geographical Science, Harbin Normal University, 150025, Harbin, China
| | - Ying Zhang
- College of Resources and Environment, Northeast Agricultural University, 150030, Harbin, China.
| | - Qingjuan Meng
- College of Resources and Environment, Northeast Agricultural University, 150030, Harbin, China
| | - Ying Liu
- College of Resources and Environment, Northeast Agricultural University, 150030, Harbin, China
| | - Diogene Tuyiringire
- College of Resources and Environment, Northeast Agricultural University, 150030, Harbin, China
| | - Zhaobo Chen
- College of Environment and Resources, Dalian Minzu University, 18 Liaohe West Road, 116600, Dalian, China
| | - Shichao Liang
- College of Resources and Environment, Northeast Agricultural University, 150030, Harbin, China
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32
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Liu C, Gong X, Wang H, Dang K, Deng X, Feng B. Low-nitrogen tolerance comprehensive evaluation and physiological response to nitrogen stress in broomcorn millet (Panicum miliaceum L.) seedling. PLANT PHYSIOLOGY AND BIOCHEMISTRY : PPB 2020; 151:233-242. [PMID: 32234662 DOI: 10.1016/j.plaphy.2020.03.027] [Citation(s) in RCA: 16] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/31/2020] [Revised: 03/10/2020] [Accepted: 03/18/2020] [Indexed: 06/11/2023]
Abstract
Developing the new crop varieties with high productivity under low nitrogen (N) input is an important access to facilitate modern agricultural sustainability. In the present study, 20 broomcorn millet (Panicum miliaceum L.) varieties were characterized for their morphological and nutrient parameters to different low N levels in seedling. The results showed that 0.25 mM NH4NO3 was the standard concentration for the evaluation and identification of low-N tolerance. Through pearson's correlation analysis, principal component analysis, and subordinate function analysis, the tolerance of 20 varieties under N stress was evaluated and plant height, root length, shoot biomass, and shoot and root N content were considered as the evaluation system of low-N tolerance. Although leaves photosynthetic capacities and activities of N metabolism related enzymes showed the decreasing tendency to N stress, low-N tolerant varieties had higher activities in both leaves and roots as compared to low-N sensitive varieties. The work provides a reliable and comprehensive method for evaluating low-N tolerance in broomcorn millet and our data elucidate possible physiological adaptive mechanisms by which broomcorn millet tolerates N stress.
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Affiliation(s)
- Chunjuan Liu
- College of Life Sciences, Northwest A & F University, Yangling, Shaanxi, 712100, PR China
| | - Xiangwei Gong
- State Key Laboratory of Crop Stress Biology in Arid Areas/Shaanxi Research Station of Crop Gene Resources & Germplasm Enhancement, Ministry of Agriculture, College of Agronomy, Northwest A & F University, Yangling, Shaanxi, 712100, PR China
| | - Honglu Wang
- State Key Laboratory of Crop Stress Biology in Arid Areas/Shaanxi Research Station of Crop Gene Resources & Germplasm Enhancement, Ministry of Agriculture, College of Agronomy, Northwest A & F University, Yangling, Shaanxi, 712100, PR China
| | - Ke Dang
- State Key Laboratory of Crop Stress Biology in Arid Areas/Shaanxi Research Station of Crop Gene Resources & Germplasm Enhancement, Ministry of Agriculture, College of Agronomy, Northwest A & F University, Yangling, Shaanxi, 712100, PR China
| | - Xiping Deng
- College of Life Sciences, Northwest A & F University, Yangling, Shaanxi, 712100, PR China.
| | - Baili Feng
- State Key Laboratory of Crop Stress Biology in Arid Areas/Shaanxi Research Station of Crop Gene Resources & Germplasm Enhancement, Ministry of Agriculture, College of Agronomy, Northwest A & F University, Yangling, Shaanxi, 712100, PR China.
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33
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Wen B, Li C, Fu X, Li D, Li L, Chen X, Wu H, Cui X, Zhang X, Shen H, Zhang W, Xiao W, Gao D. Effects of nitrate deficiency on nitrate assimilation and chlorophyll synthesis of detached apple leaves. PLANT PHYSIOLOGY AND BIOCHEMISTRY : PPB 2019; 142:363-371. [PMID: 31398585 DOI: 10.1016/j.plaphy.2019.07.007] [Citation(s) in RCA: 35] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/18/2019] [Revised: 07/02/2019] [Accepted: 07/02/2019] [Indexed: 05/10/2023]
Abstract
Nitrogen is one of the most important nutrients for plant growth and development. Nitrate nitrogen (NO3--N) is the main form of nitrogen taken up by plants. Understanding the effects of exogenous NO3--N on nitrogen metabolism at the gene expression and enzyme activity levels during nitrogen assimilation and chlorophyll synthesis is important for increasing nitrogen utilization efficiency. In this study, cell morphology, NO3--N uptake rates, the expression of key genes related to nitrogen assimilation and chlorophyll synthesis and enzyme activity in apple leaves under NO3--N deficiency were investigated. The results showed that the cell morphology of apple leaves was irreversibly deformed due to NO3--N deficiency. NO3--N was absorbed slightly one day after NO3--N deficiency treatment and effluxed after 3 days. The relative expression of genes encoding nitrogen assimilation enzymes and the activity of such enzymes decreased significantly after 1 day of NO3--N deficiency treatment. After treatment for 14 days, gene expression was upregulated, enzyme activity was increased, and NO3--N content was increased. NO3--N deficiency hindered the transformation of 5-aminobilinic acid (ALA) to porphobilinogen (PBG), suggesting a possible route by which NO3--N levels affect chlorophyll synthesis. Collectively, the results indicate that NO3--N deficiency affects enzyme activity by altering the expression of key genes in the nitrogen assimilation pathway, thereby suppressing NO3--N absorption and assimilation. NO3--N deficiency inhibits the synthesis of the chlorophyll precursor PBG, thereby hindering chlorophyll synthesis.
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Affiliation(s)
- Binbin Wen
- College of Horticulture Science and Engineering, Shandong Agricultural University, 61 Daizong Road, Tai'an, 271018, China; State Key Laboratory of Crop Biology, Shandong Agricultural University, 61 Daizong Road, Tai'an, 271018, China
| | - Chen Li
- College of Horticulture Science and Engineering, Shandong Agricultural University, 61 Daizong Road, Tai'an, 271018, China; State Key Laboratory of Crop Biology, Shandong Agricultural University, 61 Daizong Road, Tai'an, 271018, China
| | - Xiling Fu
- College of Horticulture Science and Engineering, Shandong Agricultural University, 61 Daizong Road, Tai'an, 271018, China; State Key Laboratory of Crop Biology, Shandong Agricultural University, 61 Daizong Road, Tai'an, 271018, China; Shandong Collaborative Innovation Center for Fruit and Vegetable Production with High Quality and Efficiency, Shandong Agricultural University, 61 Daizong Road, Tai'an, 271018, China
| | - Dongmei Li
- College of Horticulture Science and Engineering, Shandong Agricultural University, 61 Daizong Road, Tai'an, 271018, China; State Key Laboratory of Crop Biology, Shandong Agricultural University, 61 Daizong Road, Tai'an, 271018, China; Shandong Collaborative Innovation Center for Fruit and Vegetable Production with High Quality and Efficiency, Shandong Agricultural University, 61 Daizong Road, Tai'an, 271018, China
| | - Ling Li
- College of Horticulture Science and Engineering, Shandong Agricultural University, 61 Daizong Road, Tai'an, 271018, China; State Key Laboratory of Crop Biology, Shandong Agricultural University, 61 Daizong Road, Tai'an, 271018, China; Shandong Collaborative Innovation Center for Fruit and Vegetable Production with High Quality and Efficiency, Shandong Agricultural University, 61 Daizong Road, Tai'an, 271018, China
| | - Xiude Chen
- College of Horticulture Science and Engineering, Shandong Agricultural University, 61 Daizong Road, Tai'an, 271018, China; State Key Laboratory of Crop Biology, Shandong Agricultural University, 61 Daizong Road, Tai'an, 271018, China; Shandong Collaborative Innovation Center for Fruit and Vegetable Production with High Quality and Efficiency, Shandong Agricultural University, 61 Daizong Road, Tai'an, 271018, China
| | - Hongyu Wu
- College of Horticulture Science and Engineering, Shandong Agricultural University, 61 Daizong Road, Tai'an, 271018, China; State Key Laboratory of Crop Biology, Shandong Agricultural University, 61 Daizong Road, Tai'an, 271018, China; Shandong Collaborative Innovation Center for Fruit and Vegetable Production with High Quality and Efficiency, Shandong Agricultural University, 61 Daizong Road, Tai'an, 271018, China
| | - Xiaowen Cui
- College of Horticulture Science and Engineering, Shandong Agricultural University, 61 Daizong Road, Tai'an, 271018, China; State Key Laboratory of Crop Biology, Shandong Agricultural University, 61 Daizong Road, Tai'an, 271018, China
| | - Xinhao Zhang
- College of Horticulture Science and Engineering, Shandong Agricultural University, 61 Daizong Road, Tai'an, 271018, China; State Key Laboratory of Crop Biology, Shandong Agricultural University, 61 Daizong Road, Tai'an, 271018, China
| | - Hongyan Shen
- College of Horticulture Science and Engineering, Shandong Agricultural University, 61 Daizong Road, Tai'an, 271018, China; State Key Laboratory of Crop Biology, Shandong Agricultural University, 61 Daizong Road, Tai'an, 271018, China
| | - Wenqian Zhang
- College of Horticulture Science and Engineering, Shandong Agricultural University, 61 Daizong Road, Tai'an, 271018, China; Xintai Modern Agriculture Development Service Center, 819 Qingyun Road, Tai'an, 271200, China
| | - Wei Xiao
- College of Horticulture Science and Engineering, Shandong Agricultural University, 61 Daizong Road, Tai'an, 271018, China; State Key Laboratory of Crop Biology, Shandong Agricultural University, 61 Daizong Road, Tai'an, 271018, China; Shandong Collaborative Innovation Center for Fruit and Vegetable Production with High Quality and Efficiency, Shandong Agricultural University, 61 Daizong Road, Tai'an, 271018, China.
| | - Dongsheng Gao
- College of Horticulture Science and Engineering, Shandong Agricultural University, 61 Daizong Road, Tai'an, 271018, China; State Key Laboratory of Crop Biology, Shandong Agricultural University, 61 Daizong Road, Tai'an, 271018, China; Shandong Collaborative Innovation Center for Fruit and Vegetable Production with High Quality and Efficiency, Shandong Agricultural University, 61 Daizong Road, Tai'an, 271018, China.
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Li L, Gong H, Sun Z, Li T. Identification of conserved genes involved in nitrogen metabolic activities in wheat. PeerJ 2019; 7:e7281. [PMID: 31328042 PMCID: PMC6625498 DOI: 10.7717/peerj.7281] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/15/2018] [Accepted: 06/06/2019] [Indexed: 11/26/2022] Open
Abstract
Nitrogen (N) plays a very important role in crop growth and development. Many N-metabolism-related genes responsive to N application have been identified in many plants such as Arabidopsis, rice and maize; however, few genes have been reported in wheat, which is one of the most widely grown crops in the world. In this study, a wheat wild type with N dependent lesion mimic (LM) and its mutants without LM were used to identify conserved N-metabolism-related genes. TaPAP, TaUPS and TaNMR were differentially expressed among N levels both in the wild type and two of its mutants, and the expression patterns of these genes were further studied under application of three chemotypes of N (NH4+, NO3- and NH4NO3). The results showed that these genes are conserved N-metabolism-related genes and TaNMR is a novel player in N-metabolism.
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Affiliation(s)
- Lei 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, Yangzhou University, Yangzhou, China
| | - Hao Gong
- 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, Yangzhou University, Yangzhou, China
| | - Zhengxi Sun
- 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, Yangzhou University, Yangzhou, China
| | - Tao 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, Yangzhou University, Yangzhou, China.,Jiangsu Co-Innovation Center for Modern Production Technology of Grain Crops, Yangzhou University, Yangzhou, China
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35
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Imran M, Sun X, Hussain S, Ali U, Rana MS, Rasul F, Saleem MH, Moussa MG, Bhantana P, Afzal J, Elyamine AM, Hu CX. Molybdenum-Induced Effects on Nitrogen Metabolism Enzymes and Elemental Profile of Winter Wheat ( Triticum aestivum L.) Under Different Nitrogen Sources. Int J Mol Sci 2019; 20:ijms20123009. [PMID: 31226753 PMCID: PMC6627063 DOI: 10.3390/ijms20123009] [Citation(s) in RCA: 60] [Impact Index Per Article: 12.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/09/2019] [Revised: 05/30/2019] [Accepted: 06/01/2019] [Indexed: 12/14/2022] Open
Abstract
Different nitrogen (N) sources have been reported to significantly affect the activities and expressions of N metabolism enzymes and mineral elements concentrations in crop plants. However, molybdenum-induced effects in winter wheat cultivars have still not been investigated under different N sources. Here, a hydroponic study was carried out to investigate these effects on two winter wheat cultivars (‘97003’ and ‘97014’) as Mo-efficient and Mo-inefficient, respectively, under different N sources (NO3−, NH4NO3, and NH4+). The results revealed that the activities of nitrate reductase (NR) and nitrite reductase (NiR) followed the order of NH4NO3 > NO3− > NH4+ sources, while glutamine synthetase (GS) and glutamate synthase (GOGAT) followed the order of NH4+ > NH4NO3 > NO3− in both the wheat cultivars. However, Mo-induced effects in the activities and expressions of N metabolism enzymes under different N sources followed the order of NH4NO3 > NO3− > NH4+ sources, indicating that Mo has more complementary effects towards nitrate nutrition than the sole ammonium source in winter wheat. Interestingly, under −Mo-deprived conditions, cultivar ‘97003’ recorded more pronounced alterations in Mo-dependent parameters than ‘97014’ cultivar. Moreover, Mo application increased the proteins, amino acids, ammonium, and nitrite contents while concomitantly decreasing the nitrate contents in the same order of NH4NO3 > NO3− > NH4+ sources that coincides with the Mo-induced N enzymes activities and expressions. The findings of the present study indicated that Mo plays a key role in regulating the N metabolism enzymes and assimilatory products under all the three N sources; however, the extent of complementation exists in the order of NH4NO3 > NO3− > NH4+ sources in winter wheat. In addition, it was revealed that mineral elements profiles were mainly affected by different N sources, while Mo application generally had no significant effects on the mineral elements contents in the winter wheat leaves under different N sources.
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Affiliation(s)
- Muhammad Imran
- 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.
- Microelement Research Center, Huazhong Agricultural University, Wuhan 430070, China.
| | - Xuecheng Sun
- 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.
- Microelement Research Center, Huazhong Agricultural University, Wuhan 430070, China.
| | - Saddam Hussain
- Department of Agronomy, University of Agriculture Faisalabad, 38040 Punjab, Pakistan.
| | - Usman Ali
- College of Plant Science and Technology, Huazhong Agricultural University, Wuhan 430070, China.
| | - Muhammad Shoaib Rana
- 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.
- Microelement Research Center, Huazhong Agricultural University, Wuhan 430070, China.
| | - Fahd Rasul
- Department of Agronomy, University of Agriculture Faisalabad, 38040 Punjab, Pakistan.
| | - Muhammad Hamzah Saleem
- College of Plant Science and Technology, Huazhong Agricultural University, Wuhan 430070, China.
| | - Mohamed G Moussa
- 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.
- Microelement Research Center, Huazhong Agricultural University, Wuhan 430070, China.
- Soil and Water Research Department, Nuclear Research Center, Egyptian Atomic Energy Authority, Abou Zaabl 13759, Egypt.
| | - Parashuram Bhantana
- 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.
- Microelement Research Center, Huazhong Agricultural University, Wuhan 430070, China.
| | - Javaria Afzal
- 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.
- Microelement Research Center, Huazhong Agricultural University, Wuhan 430070, China.
| | - Ali Mohamed Elyamine
- 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.
- Microelement Research Center, Huazhong Agricultural University, Wuhan 430070, China.
- Faculty of Science and Technology, Department of Life Science, University of Comoros, Moroni 269, Comoros.
| | - Cheng Xiao Hu
- 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.
- Microelement Research Center, Huazhong Agricultural University, Wuhan 430070, China.
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36
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Ocaña-Pallarès E, Najle SR, Scazzocchio C, Ruiz-Trillo I. Reticulate evolution in eukaryotes: Origin and evolution of the nitrate assimilation pathway. PLoS Genet 2019; 15:e1007986. [PMID: 30789903 PMCID: PMC6400420 DOI: 10.1371/journal.pgen.1007986] [Citation(s) in RCA: 17] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/10/2018] [Revised: 03/05/2019] [Accepted: 01/25/2019] [Indexed: 01/17/2023] Open
Abstract
Genes and genomes can evolve through interchanging genetic material, this leading to reticular evolutionary patterns. However, the importance of reticulate evolution in eukaryotes, and in particular of horizontal gene transfer (HGT), remains controversial. Given that metabolic pathways with taxonomically-patchy distributions can be indicative of HGT events, the eukaryotic nitrate assimilation pathway is an ideal object of investigation, as previous results revealed a patchy distribution and suggested that the nitrate assimilation cluster of dikaryotic fungi (Opisthokonta) could have been originated and transferred from a lineage leading to Oomycota (Stramenopiles). We studied the origin and evolution of this pathway through both multi-scale bioinformatic and experimental approaches. Our taxon-rich genomic screening shows that nitrate assimilation is present in more lineages than previously reported, although being restricted to autotrophs and osmotrophs. The phylogenies indicate a pervasive role of HGT, with three bacterial transfers contributing to the pathway origin, and at least seven well-supported transfers between eukaryotes. In particular, we propose a distinct and more complex HGT path between Opisthokonta and Stramenopiles than the one previously suggested, involving at least two transfers of a nitrate assimilation gene cluster. We also found that gene fusion played an essential role in this evolutionary history, underlying the origin of the canonical eukaryotic nitrate reductase, and of a chimeric nitrate reductase in Ichthyosporea (Opisthokonta). We show that the ichthyosporean pathway, including this novel nitrate reductase, is physiologically active and transcriptionally co-regulated, responding to different nitrogen sources; similarly to distant eukaryotes with independent HGT-acquisitions of the pathway. This indicates that this pattern of transcriptional control evolved convergently in eukaryotes, favoring the proper integration of the pathway in the metabolic landscape. Our results highlight the importance of reticulate evolution in eukaryotes, by showing the crucial contribution of HGT and gene fusion in the evolutionary history of the nitrate assimilation pathway. One of the most relevant findings in evolution was that lineages, either genes or genomes, can evolve through interchanging genetic material. For example, exon shuffling can lead to genes with complete novel functions, and genomes can acquire novel functionalities by means of horizontal gene transfer (HGT). Whereas HGT is known to be an important driver of metabolic remodelling and ecological adaptations in Bacteria, its importance and prevalence in eukaryotes remains controversial. We show that HGT played a major role in the origin and evolution of the eukaryotic nitrate assimilation pathway, with several bacteria-to-eukaryote and eukaryote-to-eukaryote transfers promoting the acquisition of this ecologically-relevant pathway to autotrophs and to distinct groups of osmotrophs. Moreover, we also show that gene fusion was important in this evolutionary history, underlying the origin of the canonical eukaryotic nitrate reductase, but also of a non-canonical nitrate reductase that we describe in Ichthyosporea, a poorly-characterized eukaryotic group that includes many parasitic species. In conclusion, our results highlight the importance of reticulate evolution in eukaryotes, by showing the contribution of HGT and gene fusion in the evolutionary history of the nitrate assimilation pathway.
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Affiliation(s)
- Eduard Ocaña-Pallarès
- Institut de Biologia Evolutiva (CSIC-Universitat Pompeu Fabra), Barcelona, Catalonia, Spain
- * E-mail: (EOP); (IRT)
| | - Sebastián R. Najle
- Institut de Biologia Evolutiva (CSIC-Universitat Pompeu Fabra), Barcelona, Catalonia, Spain
- Instituto de Biología Molecular y Celular de Rosario (IBR-CONICET) and Facultad de Ciencias Bioquímicas y Farmacéuticas, Universidad Nacional de Rosario, Ocampo y Esmeralda s/n, Rosario S2000FHQ, Argentina
| | - Claudio Scazzocchio
- Department of Microbiology, Imperial College, London, United Kingdom
- Institute for Integrative Biology of the Cell (I2BC), Gif-sur-Yvette, France
| | - Iñaki Ruiz-Trillo
- Institut de Biologia Evolutiva (CSIC-Universitat Pompeu Fabra), Barcelona, Catalonia, Spain
- Departament de Genètica, Microbiologia i Estadística, Facultat de Biologia, Institut de Recerca de la Biodiversitat (IRBio), Universitat de Barcelona (UB), Barcelona, Catalonia, Spain
- ICREA, Barcelona, Catalonia, Spain
- * E-mail: (EOP); (IRT)
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Ma G, Liu W, Li S, Zhang P, Wang C, Lu H, Wang L, Xie Y, Ma D, Kang G. Determining the Optimal N Input to Improve Grain Yield and Quality in Winter Wheat With Reduced Apparent N Loss in the North China Plain. FRONTIERS IN PLANT SCIENCE 2019; 10:181. [PMID: 30853966 PMCID: PMC6396033 DOI: 10.3389/fpls.2019.00181] [Citation(s) in RCA: 20] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/06/2018] [Accepted: 02/05/2019] [Indexed: 05/06/2023]
Abstract
Excessive or improper nitrogen (N) application rates negatively affect crop production and thereby environmental quality, particularly for winter wheat production in the North China Plain. Therefore, it is very important to optimize N fertilizer input to balance grain yield, environmental risk, and benefits under irrigated conditions. Three long-term stationary field experiments including five N levels, from 0 to 300 kg ha-1 [0 (N0), 90 (N90), 180 (N180), 240 (N240), and 300 (N300) kg ha-1] were carried out to investigate the effects of N regime on wheat yield, photosynthesis, and N balance at different sites. The grain yield and protein content increased quadratically with N rate, and the maximum values were 8087 kg ha-1 and 13.9% at N application rates of 250 and 337 kg N ha-1, respectively. N application increased the photosynthetic fluorescence parameters (Pn, Gs, and Tr) and N metabolism enzyme activities (NR and GS) which then increased grain yield. The leaching of soil nitrate into the deeper soil layers ( > 100 cm) increased with higher N fertilization and experimental years. The partial factor productivity (PFPN) was decreased by N because the apparent N loss increased with N application rate. In order to balance grain yield, N use efficiency (NUE), and N loss, the recommended N rate should be 120-171 kg N ha-1, and the corresponding yields and apparent N loss were 7278-7787 ka ha-1 and 22-37 kg ha-1, respectively.
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Affiliation(s)
- Geng Ma
- College of Agronomy, Henan Agricultural University, Zhengzhou, China
| | - Weixing Liu
- College of Agronomy, Henan Agricultural University, Zhengzhou, China
| | - Shasha Li
- College of Agronomy, Henan Agricultural University, Zhengzhou, China
| | - Panpan Zhang
- College of Agronomy, Henan Agricultural University, Zhengzhou, China
| | - Chenyang Wang
- College of Agronomy, Henan Agricultural University, Zhengzhou, China
- State Key Laboratory of Wheat and Maize Crop Science, Henan Agricultural University, Zhengzhou, China
- National Engineering Research Centre for Wheat, Henan Agricultural University, Zhengzhou, China
- *Correspondence: Chenyang Wang,
| | - Hongfang Lu
- College of Agronomy, Henan Agricultural University, Zhengzhou, China
- State Key Laboratory of Wheat and Maize Crop Science, Henan Agricultural University, Zhengzhou, China
- National Engineering Research Centre for Wheat, Henan Agricultural University, Zhengzhou, China
| | - Lifang Wang
- College of Agronomy, Henan Agricultural University, Zhengzhou, China
- State Key Laboratory of Wheat and Maize Crop Science, Henan Agricultural University, Zhengzhou, China
- National Engineering Research Centre for Wheat, Henan Agricultural University, Zhengzhou, China
| | - Yingxin Xie
- College of Agronomy, Henan Agricultural University, Zhengzhou, China
- State Key Laboratory of Wheat and Maize Crop Science, Henan Agricultural University, Zhengzhou, China
- National Engineering Research Centre for Wheat, Henan Agricultural University, Zhengzhou, China
| | - Dongyun Ma
- College of Agronomy, Henan Agricultural University, Zhengzhou, China
- State Key Laboratory of Wheat and Maize Crop Science, Henan Agricultural University, Zhengzhou, China
- National Engineering Research Centre for Wheat, Henan Agricultural University, Zhengzhou, China
| | - Guozhang Kang
- College of Agronomy, Henan Agricultural University, Zhengzhou, China
- State Key Laboratory of Wheat and Maize Crop Science, Henan Agricultural University, Zhengzhou, China
- National Engineering Research Centre for Wheat, Henan Agricultural University, Zhengzhou, China
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38
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Liao Q, Zhou T, Yao JY, Han QF, Song HX, Guan CY, Hua YP, Zhang ZH. Genome-scale characterization of the vacuole nitrate transporter Chloride Channel (CLC) genes and their transcriptional responses to diverse nutrient stresses in allotetraploid rapeseed. PLoS One 2018; 13:e0208648. [PMID: 30571734 PMCID: PMC6301700 DOI: 10.1371/journal.pone.0208648] [Citation(s) in RCA: 17] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/12/2018] [Accepted: 11/20/2018] [Indexed: 12/18/2022] Open
Abstract
The Chloride Channel (CLC) gene family is reported to be involved in vacuolar nitrate (NO3-) transport. Nitrate distribution to the cytoplasm is beneficial for enhancing NO3- assimilation and plays an important role in the regulation of nitrogen (N) use efficiency (NUE). In this study, genomic information, high-throughput transcriptional profiles, and gene co-expression analysis were integrated to identify the CLCs (BnaCLCs) in Brassica napus. The decreased NO3- concentration in the clca-2 mutant up-regulated the activities of nitrate reductase and glutamine synthetase, contributing to increase N assimilation and higher NUE in Arabidopsis thaliana. The genome-wide identification of 22BnaCLC genes experienced strong purifying selection. Segmental duplication was the major driving force in the expansion of the BnaCLC gene family. The most abundant cis-acting regulatory elements in the gene promoters, including DNA-binding One Zinc Finger, W-box, MYB, and GATA-box, might be involved in the transcriptional regulation of BnaCLCs expression. High-throughput transcriptional profiles and quantitative real-time PCR results showed that BnaCLCs responded differentially to distinct NO3- regimes. Transcriptomics-assisted gene co-expression network analysis identified BnaA7.CLCa-3 as the core member of the BnaCLC family, and this gene might play a central role in vacuolar NO3- transport in crops. The BnaCLC members also showed distinct expression patterns under phosphate depletion and cadmium toxicity. Taken together, our results provide comprehensive insights into the vacuolar BnaCLCs and establish baseline information for future studies on BnaCLCs-mediated vacuolar NO3- storage and its effect on NUE.
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Affiliation(s)
- Qiong Liao
- Southern Regional Collaborative Innovation Center for Grain and Oil Crops in China, College of Resources and Environmental Sciences, Hunan Agricultural University, Changsha, China
| | - Ting Zhou
- Southern Regional Collaborative Innovation Center for Grain and Oil Crops in China, College of Resources and Environmental Sciences, Hunan Agricultural University, Changsha, China
| | - Jun-yue Yao
- Southern Regional Collaborative Innovation Center for Grain and Oil Crops in China, College of Resources and Environmental Sciences, Hunan Agricultural University, Changsha, China
| | - Qing-fen Han
- Southern Regional Collaborative Innovation Center for Grain and Oil Crops in China, College of Resources and Environmental Sciences, Hunan Agricultural University, Changsha, China
| | - Hai-xing Song
- Southern Regional Collaborative Innovation Center for Grain and Oil Crops in China, College of Resources and Environmental Sciences, Hunan Agricultural University, Changsha, China
| | - Chun-yun Guan
- National Center of Oilseed Crops Improvement, Hunan Branch, Changsha, China
| | - Ying-peng Hua
- Southern Regional Collaborative Innovation Center for Grain and Oil Crops in China, College of Resources and Environmental Sciences, Hunan Agricultural University, Changsha, China
- * E-mail: (ZHZ); (YPH)
| | - Zhen-hua Zhang
- Southern Regional Collaborative Innovation Center for Grain and Oil Crops in China, College of Resources and Environmental Sciences, Hunan Agricultural University, Changsha, China
- * E-mail: (ZHZ); (YPH)
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Sakr S, Wang M, Dédaldéchamp F, Perez-Garcia MD, Ogé L, Hamama L, Atanassova R. The Sugar-Signaling Hub: Overview of Regulators and Interaction with the Hormonal and Metabolic Network. Int J Mol Sci 2018; 57:2367-2379. [PMID: 30149541 DOI: 10.1093/pcp/pcw157] [Citation(s) in RCA: 22] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/07/2016] [Revised: 08/07/2018] [Accepted: 09/05/2016] [Indexed: 05/25/2023] Open
Abstract
Plant growth and development has to be continuously adjusted to the available resources. Their optimization requires the integration of signals conveying the plant metabolic status, its hormonal balance, and its developmental stage. Many investigations have recently been conducted to provide insights into sugar signaling and its interplay with hormones and nitrogen in the fine-tuning of plant growth, development, and survival. The present review emphasizes the diversity of sugar signaling integrators, the main molecular and biochemical mechanisms related to the sugar-signaling dependent regulations, and to the regulatory hubs acting in the interplay of the sugar-hormone and sugar-nitrogen networks. It also contributes to compiling evidence likely to fill a few knowledge gaps, and raises new questions for the future.
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Affiliation(s)
- Soulaiman Sakr
- Institut de Recherche en Horticulture et Semences, Agrocampus-Ouest, INRA, Université d'Angers, SFR 4207 QUASAV, F-49045 Angers, France.
| | - Ming Wang
- Institut de Recherche en Horticulture et Semences, Agrocampus-Ouest, INRA, Université d'Angers, SFR 4207 QUASAV, F-49045 Angers, France.
| | - Fabienne Dédaldéchamp
- Equipe "Sucres & Echanges Végétaux-Environnement", Ecologie et Biologie des Interactions, Université de Poitiers, UMR CNRS 7267 EBI, Bâtiment B31, 3 rue Jacques Fort, TSA 51106, 86073 Poitiers CEDEX 9, France.
| | - Maria-Dolores Perez-Garcia
- Institut de Recherche en Horticulture et Semences, Agrocampus-Ouest, INRA, Université d'Angers, SFR 4207 QUASAV, F-49045 Angers, France.
| | - Laurent Ogé
- Institut de Recherche en Horticulture et Semences, Agrocampus-Ouest, INRA, Université d'Angers, SFR 4207 QUASAV, F-49045 Angers, France.
| | - Latifa Hamama
- Institut de Recherche en Horticulture et Semences, Agrocampus-Ouest, INRA, Université d'Angers, SFR 4207 QUASAV, F-49045 Angers, France.
| | - Rossitza Atanassova
- Equipe "Sucres & Echanges Végétaux-Environnement", Ecologie et Biologie des Interactions, Université de Poitiers, UMR CNRS 7267 EBI, Bâtiment B31, 3 rue Jacques Fort, TSA 51106, 86073 Poitiers CEDEX 9, France.
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40
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Sakr S, Wang M, Dédaldéchamp F, Perez-Garcia MD, Ogé L, Hamama L, Atanassova R. The Sugar-Signaling Hub: Overview of Regulators and Interaction with the Hormonal and Metabolic Network. Int J Mol Sci 2018; 19:ijms19092506. [PMID: 30149541 PMCID: PMC6165531 DOI: 10.3390/ijms19092506] [Citation(s) in RCA: 105] [Impact Index Per Article: 17.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/23/2018] [Revised: 08/07/2018] [Accepted: 08/13/2018] [Indexed: 12/31/2022] Open
Abstract
Plant growth and development has to be continuously adjusted to the available resources. Their optimization requires the integration of signals conveying the plant metabolic status, its hormonal balance, and its developmental stage. Many investigations have recently been conducted to provide insights into sugar signaling and its interplay with hormones and nitrogen in the fine-tuning of plant growth, development, and survival. The present review emphasizes the diversity of sugar signaling integrators, the main molecular and biochemical mechanisms related to the sugar-signaling dependent regulations, and to the regulatory hubs acting in the interplay of the sugar-hormone and sugar-nitrogen networks. It also contributes to compiling evidence likely to fill a few knowledge gaps, and raises new questions for the future.
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Affiliation(s)
- Soulaiman Sakr
- Institut de Recherche en Horticulture et Semences, Agrocampus-Ouest, INRA, Université d'Angers, SFR 4207 QUASAV, F-49045 Angers, France.
| | - Ming Wang
- Institut de Recherche en Horticulture et Semences, Agrocampus-Ouest, INRA, Université d'Angers, SFR 4207 QUASAV, F-49045 Angers, France.
| | - Fabienne Dédaldéchamp
- Equipe "Sucres & Echanges Végétaux-Environnement", Ecologie et Biologie des Interactions, Université de Poitiers, UMR CNRS 7267 EBI, Bâtiment B31, 3 rue Jacques Fort, TSA 51106, 86073 Poitiers CEDEX 9, France.
| | - Maria-Dolores Perez-Garcia
- Institut de Recherche en Horticulture et Semences, Agrocampus-Ouest, INRA, Université d'Angers, SFR 4207 QUASAV, F-49045 Angers, France.
| | - Laurent Ogé
- Institut de Recherche en Horticulture et Semences, Agrocampus-Ouest, INRA, Université d'Angers, SFR 4207 QUASAV, F-49045 Angers, France.
| | - Latifa Hamama
- Institut de Recherche en Horticulture et Semences, Agrocampus-Ouest, INRA, Université d'Angers, SFR 4207 QUASAV, F-49045 Angers, France.
| | - Rossitza Atanassova
- Equipe "Sucres & Echanges Végétaux-Environnement", Ecologie et Biologie des Interactions, Université de Poitiers, UMR CNRS 7267 EBI, Bâtiment B31, 3 rue Jacques Fort, TSA 51106, 86073 Poitiers CEDEX 9, France.
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41
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Blomstedt CK, Rosati VC, Lindberg Møller B, Gleadow R. Counting the costs: nitrogen partitioning in Sorghum mutants. FUNCTIONAL PLANT BIOLOGY : FPB 2018; 45:705-718. [PMID: 32291046 DOI: 10.1071/fp17227] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/11/2017] [Accepted: 01/14/2018] [Indexed: 05/27/2023]
Abstract
Long-standing growth/defence theories state that the production of defence compounds come at a direct cost to primary metabolism when resources are limited. However, such trade-offs are inherently difficult to quantify. We compared the growth and nitrogen partitioning in wild type Sorghum bicolor (L.) Moench, which contains the cyanogenic glucoside dhurrin, with unique mutants that vary in dhurrin production. The totally cyanide deficient 1 (tcd1) mutants do not synthesise dhurrin at all whereas mutants from the adult cyanide deficient class 1 (acdc1) have decreasing concentrations as plants age. Sorghum lines were grown at three different concentrations of nitrogen. Growth, chemical analysis, physiological measurements and expression of key genes in biosynthesis and turnover were determined for leaves, stems and roots at four developmental stages. Nitrogen supply, ontogeny, tissue type and genotype were all important determinants of tissue nitrate and dhurrin concentration and turnover. The higher growth of acdc1 plants strongly supports a growth/defence trade-off. By contrast, tcd1 plants had slower growth early in development, suggesting that dhurrin synthesis and turnover may be beneficial for early seedling growth rather than being a cost. The relatively small trade-off between nitrate and dhurrin suggests these may be independently regulated.
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Affiliation(s)
- Cecilia K Blomstedt
- School of Biological Sciences, Monash University, Clayton, Vic. 3800, Australia
| | - Viviana C Rosati
- School of Biological Sciences, Monash University, Clayton, Vic. 3800, Australia
| | - Birger Lindberg Møller
- Plant Biochemistry Laboratory and VILLUM Research Centre for Plant Plasticity, Department of Plant and Environmental Sciences, University of Copenhagen, 40 Thorvaldsensvej, DK-1871 Frederiksberg C, Copenhagen, Denmark
| | - Ros Gleadow
- School of Biological Sciences, Monash University, Clayton, Vic. 3800, Australia
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Wang J, Nan Z, Christensen MJ, Zhang X, Tian P, Zhang Z, Niu X, Gao P, Chen T, Ma L. Effect of Epichloë gansuensis Endophyte on the Nitrogen Metabolism, Nitrogen Use Efficiency, and Stoichiometry of Achnatherum inebrians under Nitrogen Limitation. JOURNAL OF AGRICULTURAL AND FOOD CHEMISTRY 2018; 66:4022-4031. [PMID: 29648822 DOI: 10.1021/acs.jafc.7b06158] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/12/2023]
Abstract
The systemic fungal endophyte of the grass Achnatherum inebrians, Epichloë gansuensis, has important roles in enhancing resistance to biotic and abiotic stresses. In this work, we first evaluated the effects of E. gansuensis on nitrogen metabolism, nitrogen use efficiency, and stoichiometry of A. inebrians under varying nitrogen concentrations. The results demonstrated that E. gansuensis significantly improved the growth of A. inebrians under low nitrogen conditions. The fresh and dry weights, nitrogen reductase, nitrite reductase, and glutamine synthetase activity, NO3-, NH4+, N, and P content, and also the total N accumulation, N utilization efficiency, and N uptake efficiency were all higher in leaves of A. inebrians with E. ganusensis (E+) plants than A. inebrians plants without this endophyte (E-) under low nitrogen availability. In conclusion, E. gansuensis has positive effects on improving the growth of A. inebrians under low-nitrogen conditions by modulating the enzymes of nitrogen metabolism and enhancing nitrogen use efficiency.
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Affiliation(s)
- Jianfeng Wang
- The State Key Laboratory of Grassland Agro-ecosystems, College of Pastoral Agriculture Science and Technology , Lanzhou University , Lanzhou 730020 , Gansu , China
- Key Laboratory of Grassland Livestock Industry Innovation, Ministry of Agriculture, China, College of Pastoral Agriculture Science and Technology , Lanzhou University , Lanzhou 730020 , Gansu China
| | - Zhibiao Nan
- The State Key Laboratory of Grassland Agro-ecosystems, College of Pastoral Agriculture Science and Technology , Lanzhou University , Lanzhou 730020 , Gansu , China
- Key Laboratory of Grassland Livestock Industry Innovation, Ministry of Agriculture, China, College of Pastoral Agriculture Science and Technology , Lanzhou University , Lanzhou 730020 , Gansu China
| | - Michael J Christensen
- Retired scientist of AgResearch , Grasslands Research Centre , Private Bag 11-008, Palmerston North 4442 , New Zealand
| | - Xingxu Zhang
- The State Key Laboratory of Grassland Agro-ecosystems, College of Pastoral Agriculture Science and Technology , Lanzhou University , Lanzhou 730020 , Gansu , China
- Key Laboratory of Grassland Livestock Industry Innovation, Ministry of Agriculture, China, College of Pastoral Agriculture Science and Technology , Lanzhou University , Lanzhou 730020 , Gansu China
| | - Pei Tian
- The State Key Laboratory of Grassland Agro-ecosystems, College of Pastoral Agriculture Science and Technology , Lanzhou University , Lanzhou 730020 , Gansu , China
- Key Laboratory of Grassland Livestock Industry Innovation, Ministry of Agriculture, China, College of Pastoral Agriculture Science and Technology , Lanzhou University , Lanzhou 730020 , Gansu China
| | - Zhixin Zhang
- The State Key Laboratory of Grassland Agro-ecosystems, College of Pastoral Agriculture Science and Technology , Lanzhou University , Lanzhou 730020 , Gansu , China
- Key Laboratory of Grassland Livestock Industry Innovation, Ministry of Agriculture, China, College of Pastoral Agriculture Science and Technology , Lanzhou University , Lanzhou 730020 , Gansu China
| | - Xueli Niu
- The State Key Laboratory of Grassland Agro-ecosystems, College of Pastoral Agriculture Science and Technology , Lanzhou University , Lanzhou 730020 , Gansu , China
- Key Laboratory of Grassland Livestock Industry Innovation, Ministry of Agriculture, China, College of Pastoral Agriculture Science and Technology , Lanzhou University , Lanzhou 730020 , Gansu China
| | - Peng Gao
- The State Key Laboratory of Grassland Agro-ecosystems, College of Pastoral Agriculture Science and Technology , Lanzhou University , Lanzhou 730020 , Gansu , China
| | - Tao Chen
- The State Key Laboratory of Grassland Agro-ecosystems, College of Pastoral Agriculture Science and Technology , Lanzhou University , Lanzhou 730020 , Gansu , China
- Key Laboratory of Grassland Livestock Industry Innovation, Ministry of Agriculture, China, College of Pastoral Agriculture Science and Technology , Lanzhou University , Lanzhou 730020 , Gansu China
| | - Lixia Ma
- The State Key Laboratory of Grassland Agro-ecosystems, College of Pastoral Agriculture Science and Technology , Lanzhou University , Lanzhou 730020 , Gansu , China
- Key Laboratory of Grassland Livestock Industry Innovation, Ministry of Agriculture, China, College of Pastoral Agriculture Science and Technology , Lanzhou University , Lanzhou 730020 , Gansu China
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43
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Balotf S, Islam S, Kavoosi G, Kholdebarin B, Juhasz A, Ma W. How exogenous nitric oxide regulates nitrogen assimilation in wheat seedlings under different nitrogen sources and levels. PLoS One 2018; 13:e0190269. [PMID: 29320529 PMCID: PMC5761883 DOI: 10.1371/journal.pone.0190269] [Citation(s) in RCA: 36] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/13/2017] [Accepted: 12/11/2017] [Indexed: 12/17/2022] Open
Abstract
Nitrogen (N) is one of the most important nutrients for plants and nitric oxide (NO) as a signaling plant growth regulator involved in nitrogen assimilation. Understanding the influence of exogenous NO on nitrogen metabolism at the gene expression and enzyme activity levels under different sources of nitrogen is vitally important for increasing nitrogen use efficiency (NUE). This study investigated the expression of key genes and enzymes in relation to nitrogen assimilation in two Australian wheat cultivars, a popular high NUE cv. Spitfire and a normal NUE cv. Westonia, under different combinations of nitrogen and sodium nitroprusside (SNP) as the NO donor. Application of NO increased the gene expressions and activities of nitrogen assimilation pathway enzymes in both cultivars at low levels of nitrogen. At high nitrogen supplies, the expressions and activities of N assimilation genes increased in response to exogenous NO only in cv. Spitfire but not in cv. Westonia. Exogenous NO caused an increase in leaf NO content at low N supplies in both cultivars, while under high nitrogen treatments, cv. Spitfire showed an increase under ammonium nitrate (NH4NO3) treatment but cv. Westonia was not affected. N assimilation gene expression and enzyme activity showed a clear relationship between exogenous NO, N concentration and N forms in primary plant nitrogen assimilation. Results reveal the possible role of NO and different nitrogen sources on nitrogen assimilation in Triticum aestivum plants.
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Affiliation(s)
- Sadegh Balotf
- School of Veterinary and Life Science, Murdoch University, Perth, Western Australia, Australia
- Institute of Biotechnology, Shiraz University, Shiraz, Iran
| | - Shahidul Islam
- School of Veterinary and Life Science, Murdoch University, Perth, Western Australia, Australia
| | | | - Bahman Kholdebarin
- Department of Biology, Faculty of Sciences, Shiraz University, Shiraz, Iran
| | - Angela Juhasz
- School of Veterinary and Life Science, Murdoch University, Perth, Western Australia, Australia
| | - Wujun Ma
- School of Veterinary and Life Science, Murdoch University, Perth, Western Australia, Australia
- * E-mail:
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44
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Zhang Z, Xiong S, Wei Y, Meng X, Wang X, Ma X. The role of glutamine synthetase isozymes in enhancing nitrogen use efficiency of N-efficient winter wheat. Sci Rep 2017; 7:1000. [PMID: 28428629 PMCID: PMC5430530 DOI: 10.1038/s41598-017-01071-1] [Citation(s) in RCA: 39] [Impact Index Per Article: 5.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/07/2016] [Accepted: 03/27/2017] [Indexed: 11/26/2022] Open
Abstract
Glutamine synthetase (GS) isozymes play critical roles in nitrogen (N) metabolism. However, the exact relationship between GS and nitrogen use efficiency (NUE) remain unclear. We have selected and compared two wheat cultivars, YM49 and XN509, which were identified as the N-efficient and N-inefficient genotypes, respectively. In this study, agronomical, morphological, physiological and biochemical approaches were performed. The results showed that TaGS1 was high expressed post-anthesis, and TaGS2 was highly expressed pre-anthesis in N-efficient genotype compared to N-inefficient genotype. GS1 and GS2 isozymes were also separated by native-PAGE and found that the spatial and temporal distribution of GS isozymes, their expression of gene and protein subunits in source-sink-flow organs during development periods triggered the pool strength and influenced the N flow. According to the physiological role of GS isozymes, we illustrated four metabolic regulation points, by which acting collaboratively in different organs, accelerating the transport of nutrients to the grain. It suggested that the regulation of GS isozymes may promote flow strength and enhance NUE by a complex C-N metabolic mechanism. The relative activity or amount of GS1 and GS2 isozymes could be a potential marker to predict and select wheat genotypes with enhanced NUE.
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Affiliation(s)
- Zhiyong Zhang
- Collaborative Innovation Center of Henan Grain Crops, Henan Agricultural University, Zhengzhou, 450002, China
- College of Agronomy, Henan Agricultural University, Zhengzhou, 450002, China
- Key Laboratory of Physiology, Ecology and Genetic Improvement of Food Crops in HenanProvince, Zhengzhou, 450002, China
| | - Shuping Xiong
- Collaborative Innovation Center of Henan Grain Crops, Henan Agricultural University, Zhengzhou, 450002, China
- College of Agronomy, Henan Agricultural University, Zhengzhou, 450002, China
- Key Laboratory of Physiology, Ecology and Genetic Improvement of Food Crops in HenanProvince, Zhengzhou, 450002, China
| | - Yihao Wei
- Collaborative Innovation Center of Henan Grain Crops, Henan Agricultural University, Zhengzhou, 450002, China
- College of Agronomy, Henan Agricultural University, Zhengzhou, 450002, China
- Key Laboratory of Physiology, Ecology and Genetic Improvement of Food Crops in HenanProvince, Zhengzhou, 450002, China
| | - Xiaodan Meng
- Collaborative Innovation Center of Henan Grain Crops, Henan Agricultural University, Zhengzhou, 450002, China
- College of Agronomy, Henan Agricultural University, Zhengzhou, 450002, China
- Key Laboratory of Physiology, Ecology and Genetic Improvement of Food Crops in HenanProvince, Zhengzhou, 450002, China
| | - Xiaochun Wang
- Department of Biochemistry, College of Life Science, Henan Agriculture University, Zhengzhou, 450002, China.
| | - Xinming Ma
- Collaborative Innovation Center of Henan Grain Crops, Henan Agricultural University, Zhengzhou, 450002, China.
- College of Agronomy, Henan Agricultural University, Zhengzhou, 450002, China.
- Key Laboratory of Physiology, Ecology and Genetic Improvement of Food Crops in HenanProvince, Zhengzhou, 450002, China.
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Ma X, Zhu C, Yang N, Gan L, Xia K. γ-Aminobutyric acid addition alleviates ammonium toxicity by limiting ammonium accumulation in rice (Oryza sativa) seedlings. PHYSIOLOGIA PLANTARUM 2016; 158:389-401. [PMID: 27218863 DOI: 10.1111/ppl.12473] [Citation(s) in RCA: 17] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/02/2016] [Revised: 04/28/2016] [Accepted: 05/10/2016] [Indexed: 05/28/2023]
Abstract
Excessive use of nitrogen (N) fertilizer has increased ammonium (NH4+ ) accumulation in many paddy soils to levels that reduce rice vegetative biomass and yield. Based on studies of NH4+ toxicity in rice (Oryza sativa, Nanjing 44) seedlings cultured in agar medium, we found that NH4+ concentrations above 0.75 mM inhibited the growth of rice and caused NH4+ accumulation in both shoots and roots. Use of excessive NH4+ also induced rhizosphere acidification and inhibited the absorption of K, Ca, Mg, Fe and Zn in rice seedlings. Under excessive NH4+ conditions, exogenous γ-aminobutyric acid (GABA) treatment limited NH4+ accumulation in rice seedlings, reduced NH4+ toxicity symptoms and promoted plant growth. GABA addition also reduced rhizosphere acidification and alleviated the inhibition of Ca, Mg, Fe and Zn absorption caused by excessive NH4+ . Furthermore, we found that the activity of glutamine synthetase/NADH-glutamate synthase (GS; EC 6.3.1.2/NADH-GOGAT; EC1.4.1.14) in root increased gradually as the NH4+ concentration increased. However, when the concentration of NH4+ is more than 3 mM, GABA treatment inhibited NH4+ -induced increases in GS/NADH-GOGAT activity. The inhibition of ammonium assimilation may restore the elongation of seminal rice roots repressed by high NH4+ . These results suggest that mitigation of ammonium accumulation and assimilation is essential for GABA-dependent alleviation of ammonium toxicity in rice seedlings.
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Affiliation(s)
- Xiaoling Ma
- College of Life Sciences, Nanjing Agricultural University, Nanjing, 210095, China
| | - Changhua Zhu
- College of Life Sciences, Nanjing Agricultural University, Nanjing, 210095, China
| | - Na Yang
- College of Life Sciences, Nanjing Agricultural University, Nanjing, 210095, China
| | - Lijun Gan
- College of Life Sciences, Nanjing Agricultural University, Nanjing, 210095, China
| | - Kai Xia
- College of Life Sciences, Nanjing Agricultural University, Nanjing, 210095, China
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