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Leng X, Wang H, Cao L, Chang R, Zhang S, Xu C, Yu J, Xu X, Qu C, Xu Z, Liu G. Overexpressing GLUTAMINE SYNTHETASE 1;2 maintains carbon and nitrogen balance under high-ammonium conditions and results in increased tolerance to ammonium toxicity in hybrid poplar. JOURNAL OF EXPERIMENTAL BOTANY 2024; 75:4052-4073. [PMID: 38497908 DOI: 10.1093/jxb/erae124] [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: 11/25/2023] [Accepted: 03/16/2024] [Indexed: 03/19/2024]
Abstract
The glutamine synthetase/glutamic acid synthetase (GS/GOGAT) cycle plays important roles in N metabolism, growth, development, and stress resistance in plants. Excess ammonium (NH4+) restricts growth, but GS can help to alleviate its toxicity. In this study, the 84K model clone of hybrid poplar (Populus alba × P. tremula var. glandulosa), which has reduced biomass accumulation and leaf chlorosis under high-NH4+ stress, showed less severe symptoms in transgenic lines overexpressing GLUTAMINE SYNTHETASE 1;2 (GS1;2-OE), and more severe symptoms in RNAi lines (GS1;2-RNAi). Compared with the wild type, the GS1;2-OE lines had increased GS and GOGAT activities and higher contents of free amino acids, soluble proteins, total N, and chlorophyll under high-NH4+ stress, whilst the antioxidant and NH4+ assimilation capacities of the GS1;2-RNAi lines were decreased. The total C content and C/N ratio in roots and leaves of the overexpression lines were higher under stress, and there were increased contents of various amino acids and sugar alcohols, and reduced contents of carbohydrates in the roots. Under high-NH4+ stress, genes related to amino acid biosynthesis, sucrose and starch degradation, galactose metabolism, and the antioxidant system were significantly up-regulated in the roots of the overexpression lines. Thus, overexpression of GS1;2 affected the carbon and amino acid metabolism pathways under high-NH4+ stress to help maintain the balance between C and N metabolism and alleviate the symptoms of toxicity. Modification of the GS/GOGAT cycle by genetic engineering is therefore a potential strategy for improving the NH4+ tolerance of cultivated trees.
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Affiliation(s)
- Xue Leng
- State Key Laboratory of Tree Genetics and Breeding, Northeast Forestry University, Harbin 150040, China
- College of Agriculture, Jilin Agricultural Science and Technology University, Jilin 132109, China
| | - Hanzeng Wang
- College of Agriculture, Jilin Agricultural Science and Technology University, Jilin 132109, China
| | - Lina Cao
- State Key Laboratory of Tree Genetics and Breeding, Northeast Forestry University, Harbin 150040, China
| | - Ruhui Chang
- College of Life Science, Northeast Forestry University, Harbin 150040, China
| | - Shuang Zhang
- College of Life Science, Northeast Forestry University, Harbin 150040, China
| | - Caifeng Xu
- State Key Laboratory of Tree Genetics and Breeding, Northeast Forestry University, Harbin 150040, China
| | - Jiajie Yu
- State Key Laboratory of Tree Genetics and Breeding, Northeast Forestry University, Harbin 150040, China
| | - Xiuyue Xu
- State Key Laboratory of Tree Genetics and Breeding, Northeast Forestry University, Harbin 150040, China
| | - Chunpu Qu
- State Key Laboratory of Tree Genetics and Breeding, Northeast Forestry University, Harbin 150040, China
- College of Forestry, Guizhou University, Guiyang 550025, China
| | - Zhiru Xu
- State Key Laboratory of Tree Genetics and Breeding, Northeast Forestry University, Harbin 150040, China
- College of Life Science, Northeast Forestry University, Harbin 150040, China
| | - Guanjun Liu
- State Key Laboratory of Tree Genetics and Breeding, Northeast Forestry University, Harbin 150040, China
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Liao HS, Lee KT, Chung YH, Chen SZ, Hung YJ, Hsieh MH. Glutamine induces lateral root initiation, stress responses, and disease resistance in Arabidopsis. PLANT PHYSIOLOGY 2024; 195:2289-2308. [PMID: 38466723 DOI: 10.1093/plphys/kiae144] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/09/2023] [Revised: 02/06/2024] [Accepted: 02/20/2024] [Indexed: 03/13/2024]
Abstract
The production of glutamine (Gln) from NO3- and NH4+ requires ATP, reducing power, and carbon skeletons. Plants may redirect these resources to other physiological processes using Gln directly. However, feeding Gln as the sole nitrogen (N) source has complex effects on plants. Under optimal concentrations, Arabidopsis (Arabidopsis thaliana) seedlings grown on Gln have similar primary root lengths, more lateral roots, smaller leaves, and higher amounts of amino acids and proteins compared to those grown on NH4NO3. While high levels of Gln accumulate in Arabidopsis seedlings grown on Gln, the expression of GLUTAMINE SYNTHETASE1;1 (GLN1;1), GLN1;2, and GLN1;3 encoding cytosolic GS1 increases and expression of GLN2 encoding chloroplastic GS2 decreases. These results suggest that Gln has distinct effects on regulating GLN1 and GLN2 gene expression. Notably, Arabidopsis seedlings grown on Gln have an unexpected gene expression profile. Compared with NH4NO3, which activates growth-promoting genes, Gln preferentially induces stress- and defense-responsive genes. Consistent with the gene expression data, exogenous treatment with Gln enhances disease resistance in Arabidopsis. The induction of Gln-responsive genes, including PATHOGENESIS-RELATED1, SYSTEMIC ACQUIRED RESISTANCE DEFICIENT1, WRKY54, and WALL ASSOCIATED KINASE1, is compromised in salicylic acid (SA) biosynthetic and signaling mutants under Gln treatments. Together, these results suggest that Gln may partly interact with the SA pathway to trigger plant immunity.
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Affiliation(s)
- Hong-Sheng Liao
- Institute of Plant and Microbial Biology, Academia Sinica, Taipei 11529, Taiwan
| | - Kim-Teng Lee
- Institute of Plant and Microbial Biology, Academia Sinica, Taipei 11529, Taiwan
- Molecular and Biological Agricultural Sciences, The Taiwan International Graduate Program, Academia Sinica, Taipei 11529, Taiwan
- Biotechnology Center, National Chung-Hsing University, Taichung 40227, Taiwan
| | - Yi-Hsin Chung
- Institute of Plant and Microbial Biology, Academia Sinica, Taipei 11529, Taiwan
| | - Soon-Ziet Chen
- Institute of Plant and Microbial Biology, Academia Sinica, Taipei 11529, Taiwan
| | - Yi-Jie Hung
- Institute of Plant and Microbial Biology, Academia Sinica, Taipei 11529, Taiwan
- Department of Life Sciences, National Central University, Taoyuan 32001, Taiwan
| | - Ming-Hsiun Hsieh
- Institute of Plant and Microbial Biology, Academia Sinica, Taipei 11529, Taiwan
- Molecular and Biological Agricultural Sciences, The Taiwan International Graduate Program, Academia Sinica, Taipei 11529, Taiwan
- Biotechnology Center, National Chung-Hsing University, Taichung 40227, Taiwan
- Department of Life Sciences, National Central University, Taoyuan 32001, Taiwan
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Lodovici A, Buoso S, Miras-Moreno B, Lucini L, Garcia-Perez P, Tomasi N, Pinton R, Zanin L. Peculiarity of the early metabolomic response in tomato after urea, ammonium or nitrate supply. PLANT PHYSIOLOGY AND BIOCHEMISTRY : PPB 2024; 211:108666. [PMID: 38723490 DOI: 10.1016/j.plaphy.2024.108666] [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: 02/16/2024] [Revised: 04/18/2024] [Accepted: 04/24/2024] [Indexed: 05/26/2024]
Abstract
Nitrogen (N) is the nutrient most applied in agriculture as fertilizer (as nitrate, Nit; ammonium, A; and/or urea, U, forms) and its availability strongly constrains the crop growth and yield. To investigate the early response (24 h) of N-deficient tomato plants to these three N forms, a physiological and molecular study was performed. In comparison to N-deficient plants, significant changes in the transcriptional, metabolomic and ionomic profiles were observed. As a probable consequence of N mobility in plants, a wide metabolic modulation occurred in old leaves rather than in young leaves. The metabolic profile of U and A-treated plants was more similar than Nit-treated plant profile, which in turn presented the lowest metabolic modulation with respect to N-deficient condition. Urea and A forms induced some changes at the biosynthesis of secondary metabolites, amino acids and phytohormones. Interestingly, a specific up-regulation by U and down-regulation by A of carbon synthesis occurred in roots. Along with the gene expression, data suggest that the specific N form influences the activation of metabolic pathways for its assimilation (cytosolic GS/AS and/or plastidial GS/GOGAT cycle). Urea induced an up-concentration of Cu and Mn in leaves and Zn in whole plant. This study highlights a metabolic reprogramming depending on the N form applied, and it also provide evidence of a direct relationship between urea nutrition and Zn concentration. The understanding of the metabolic pathways activated by the different N forms represents a milestone in improving the efficiency of urea fertilization in crops.
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Affiliation(s)
- Arianna Lodovici
- Department of Agricultural, Food, Environmental and Animal Sciences, University of Udine, Via delle Scienze 206 - 33100, Udine, Italy.
| | - Sara Buoso
- Department of Agricultural, Food, Environmental and Animal Sciences, University of Udine, Via delle Scienze 206 - 33100, Udine, Italy.
| | - Begoña Miras-Moreno
- Department for Sustainable Food Process, Research Centre for Nutrigenomics and Proteomics, Università Cattolica del Sacro Cuore, Piacenza, Italy.
| | - Luigi Lucini
- Department for Sustainable Food Process, Research Centre for Nutrigenomics and Proteomics, Università Cattolica del Sacro Cuore, Piacenza, Italy.
| | - Pascual Garcia-Perez
- Department for Sustainable Food Process, Research Centre for Nutrigenomics and Proteomics, Università Cattolica del Sacro Cuore, Piacenza, Italy.
| | - Nicola Tomasi
- Department of Agricultural, Food, Environmental and Animal Sciences, University of Udine, Via delle Scienze 206 - 33100, Udine, Italy.
| | - Roberto Pinton
- Department of Agricultural, Food, Environmental and Animal Sciences, University of Udine, Via delle Scienze 206 - 33100, Udine, Italy.
| | - Laura Zanin
- Department of Agricultural, Food, Environmental and Animal Sciences, University of Udine, Via delle Scienze 206 - 33100, Udine, Italy.
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Liu L, Chen Z, Zhang N, Liu J, Tian Z, Sun C. Transcriptomic and metabolomic analysis provides insight into imazethapyr toxicity to non-target plants. ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH INTERNATIONAL 2024; 31:28368-28378. [PMID: 38532215 DOI: 10.1007/s11356-024-32967-x] [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: 11/13/2023] [Accepted: 03/14/2024] [Indexed: 03/28/2024]
Abstract
Imazethapyr is a widely used imidazolinone herbicide worldwide, and its potential adverse effects on non-target plants have raised concerns. Understanding the mechanisms of imazethapyr phytotoxicity is crucial for its agro-ecological risk assessment. Here, the comprehensive molecular responses and metabolic alterations of Arabidopsis in response to imazethapyr were investigated. Our results showed that root exposure to imazethapyr inhibited shoot growth, reduced chlorophyll contents, induced photoinhibition and decreased photosynthetic activity. By non-target metabolomic analysis, we identified 75 metabolites that were significantly changed after imazethapyr exposure, and they are mainly enriched in carbohydrate, lipid and amino acid metabolism. Transcriptomic analysis confirmed that imazethapyr significantly downregulated the genes involved in photosynthetic electron transport and the carbon cycle. In detail, 48 genes in the photosynthetic lightreaction and 11 genes in Calvin cycle were downregulated. Additionally, the downregulation of genes related to electron transport in mitochondria provides strong evidence for imazethapyr inhibiting photosynthetic carbon fixation and cellular energy metabolism as one of mechanisms of toxicity. These results revealed the molecular and metabolic basis of imazethapyr toxicity on non-target plants, contributing to environmental risk assessment and mitigate negative impact of imazethapyr residues in agricultural soils.
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Affiliation(s)
- Lijuan Liu
- Key Laboratory of Pollution Exposure and Health Intervention of Zhejiang Province, Interdisciplinary Research Academy (IRA), Zhejiang Shuren University, Hangzhou, 310015, China
| | - Ziyu Chen
- Key Laboratory of Pollution Exposure and Health Intervention of Zhejiang Province, Interdisciplinary Research Academy (IRA), Zhejiang Shuren University, Hangzhou, 310015, China
| | - Nan Zhang
- MOE Key Laboratory of Environment Remediation and Ecological Health, College of Environmental & Resource Sciences, Zhejiang University, Hangzhou, 310058, China
| | - Jiahui Liu
- Key Laboratory of Pollution Exposure and Health Intervention of Zhejiang Province, Interdisciplinary Research Academy (IRA), Zhejiang Shuren University, Hangzhou, 310015, China
| | - Zhongling Tian
- Key Laboratory of Pollution Exposure and Health Intervention of Zhejiang Province, Interdisciplinary Research Academy (IRA), Zhejiang Shuren University, Hangzhou, 310015, China
| | - Chengliang Sun
- MOE Key Laboratory of Environment Remediation and Ecological Health, College of Environmental & Resource Sciences, Zhejiang University, Hangzhou, 310058, China.
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Huang Y, Ji Z, Zhang S, Li S. Function of hormone signaling in regulating nitrogen-use efficiency in plants. JOURNAL OF PLANT PHYSIOLOGY 2024; 294:154191. [PMID: 38335845 DOI: 10.1016/j.jplph.2024.154191] [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: 12/24/2023] [Revised: 02/01/2024] [Accepted: 02/04/2024] [Indexed: 02/12/2024]
Abstract
Nitrogen (N) is one of the most important nutrients for crop plant performance, however, the excessive application of nitrogenous fertilizers in agriculture significantly increases production costs and causes severe environmental problems. Therefore, comprehensively understanding the molecular mechanisms of N-use efficiency (NUE) with the aim of developing new crop varieties that combine high yields with improved NUE is an urgent goal for achieving more sustainable agriculture. Plant NUE is a complex trait that is affected by multiple factors, of which hormones are known to play pivotal roles. In this review, we focus on the interaction between the biosynthesis and signaling pathways of plant hormones with N metabolism, and summarize recent studies on the interplay between hormones and N, including how N regulates multiple hormone biosynthesis, transport and signaling and how hormones modulate root system architecture (RSA) in response to external N sources. Finally, we explore potential strategies for promoting crop NUE by modulating hormone synthesis, transport and signaling. This provides insights for future breeding of N-efficient crop varieties and the advancement of sustainable agriculture.
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Affiliation(s)
- Yunzhi Huang
- State Key Laboratory of Crop Genetics & Germplasm Enhancement and Utilization, Nanjing Agricultural University, Nanjing, China
| | - Zhe Ji
- Department of Biology, University of Oxford, Oxford, UK
| | - Siyu Zhang
- State Key Laboratory of Crop Genetics & Germplasm Enhancement and Utilization, Nanjing Agricultural University, Nanjing, China
| | - Shan Li
- State Key Laboratory of Crop Genetics & Germplasm Enhancement and Utilization, Nanjing Agricultural University, Nanjing, China; Jiangsu Collaborative Innovation Center for Modern Crop Production, Nanjing Agricultural University, Nanjing, China.
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Liu H, Ni B, Duan A, He C, Zhang J. High Frankia abundance and low diversity of microbial community are associated with nodulation specificity and stability of sea buckthorn root nodule. FRONTIERS IN PLANT SCIENCE 2024; 15:1301447. [PMID: 38450407 PMCID: PMC10915256 DOI: 10.3389/fpls.2024.1301447] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 09/25/2023] [Accepted: 02/05/2024] [Indexed: 03/08/2024]
Abstract
Introduction Actinorhizal symbioses are gaining attention due to the importance of symbiotic nitrogen fixation in sustainable agriculture. Sea buckthorn (Hippophae L.) is an important actinorhizal plant, yet research on the microbial community and nitrogen cycling in its nodules is limited. In addition, the influence of environmental differences on the microbial community of sea buckthorn nodules and whether there is a single nitrogen-fixing actinomycete species in the nodules are still unknown. Methods We investigated the diversity, community composition, network associations and nitrogen cycling pathways of the microbial communities in the root nodule (RN), nodule surface soil (NS), and bulk soil (BS) of Mongolian sea buckthorn distributed under three distinct ecological conditions in northern China using 16S rRNA gene and metagenomic sequencing. Combined with the data of environmental factors, the effects of environmental differences on different sample types were analyzed. Results The results showed that plants exerted a clear selective filtering effect on microbiota, resulting in a significant reduction in microbial community diversity and network complexity from BS to NS to RN. Proteobacteria was the most abundant phylum in the microbiomes of BS and NS. While RN was primarily dominated by Actinobacteria, with Frankia sp. EAN1pec serving as the most dominant species. Correlation analysis indicated that the host determined the microbial community composition in RN, independent of the ecological and geographical environmental changes of the sea buckthorn plantations. Nitrogen cycle pathway analyses showed that RN microbial community primarily functions in nitrogen fixation, and Frankia sp. EAN1pec was a major contributor to nitrogen fixation genes in RN. Discussion This study provides valuable insights into the effects of eco-geographical environment on the microbial communities of sea buckthorn RN. These findings further prove that the nodulation specificity and stability of sea buckthorn root and Frankia sp. EAN1pec may be the result of their long-term co-evolution.
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Affiliation(s)
- Hong Liu
- State Key Laboratory of Tree Genetics and Breeding & Key Laboratory of Tree Breeding and Cultivation, National Forestry and Grassland Administration, Research Institute of Forestry, Chinese Academy of Forestry, Beijing, China
| | - Bingbing Ni
- State Key Laboratory of Tree Genetics and Breeding & Key Laboratory of Tree Breeding and Cultivation, National Forestry and Grassland Administration, Research Institute of Forestry, Chinese Academy of Forestry, Beijing, China
| | - Aiguo Duan
- State Key Laboratory of Tree Genetics and Breeding & Key Laboratory of Tree Breeding and Cultivation, National Forestry and Grassland Administration, Research Institute of Forestry, Chinese Academy of Forestry, Beijing, China
| | - Caiyun He
- State Key Laboratory of Tree Genetics and Breeding & Key Laboratory of Tree Breeding and Cultivation, National Forestry and Grassland Administration, Research Institute of Forestry, Chinese Academy of Forestry, Beijing, China
| | - Jianguo Zhang
- State Key Laboratory of Tree Genetics and Breeding & Key Laboratory of Tree Breeding and Cultivation, National Forestry and Grassland Administration, Research Institute of Forestry, Chinese Academy of Forestry, Beijing, China
- Collaborative Innovation Center of Sustainable Forestry in Southern China, Nanjing Forestry University, Nanjing, China
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Li J, Li Q, Guo N, Xian Q, Lan B, Nangia V, Mo F, Liu Y. Polyamines mediate the inhibitory effect of drought stress on nitrogen reallocation and utilization to regulate grain number in wheat. JOURNAL OF EXPERIMENTAL BOTANY 2024; 75:1016-1035. [PMID: 37813095 DOI: 10.1093/jxb/erad393] [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: 05/26/2023] [Accepted: 10/05/2023] [Indexed: 10/11/2023]
Abstract
Drought stress poses a serious threat to grain formation in wheat. Nitrogen (N) plays crucial roles in plant organ development; however, the physiological mechanisms by which drought stress affects plant N availability and mediates the formation of grains in spikes of winter wheat are still unclear. In this study, we determined that pre-reproductive drought stress significantly reduced the number of fertile florets and the number of grains formed. Transcriptome analysis demonstrated that this was related to N metabolism, and in particular, the metabolism pathways of arginine (the main precursor for synthesis of polyamine) and proline. Continuous drought stress restricted plant N accumulation and reallocation rates, and plants preferentially allocated more N to spike development. As the activities of amino acid biosynthesis enzymes and catabolic enzymes were inhibited, more free amino acids accumulated in young spikes. The expression of polyamine synthase genes was down-regulated under drought stress, whilst expression of genes encoding catabolic enzymes was enhanced, resulting in reductions in endogenous spermidine and putrescine. Treatment with exogenous spermidine optimized N allocation in young spikes and leaves, which greatly alleviated the drought-induced reduction in the number of grains per spike. Overall, our results show that pre-reproductive drought stress affects wheat grain numbers by regulating N redistribution and polyamine metabolism.
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Affiliation(s)
- Juan Li
- College of Agronomy, Northwest A&F University, Taicheng Road 3, Yangling, Shaanxi, 712100, PR China
| | - Qi Li
- College of Agronomy, Northwest A&F University, Taicheng Road 3, Yangling, Shaanxi, 712100, PR China
| | - Nian Guo
- College of Agronomy, Northwest A&F University, Taicheng Road 3, Yangling, Shaanxi, 712100, PR China
| | - Qinglin Xian
- College of Agronomy, Northwest A&F University, Taicheng Road 3, Yangling, Shaanxi, 712100, PR China
| | - Bing Lan
- College of Agronomy, Northwest A&F University, Taicheng Road 3, Yangling, Shaanxi, 712100, PR China
| | - Vinay Nangia
- International Center for Agricultural Research in the Dry Areas (ICARDA), P.O. Box 6299-10112, Rabat, Morocco
| | - Fei Mo
- College of Agronomy, Northwest A&F University, Taicheng Road 3, Yangling, Shaanxi, 712100, PR China
| | - Yang Liu
- College of Agronomy, Northwest A&F University, Taicheng Road 3, Yangling, Shaanxi, 712100, PR China
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Lu L, Wang Q, Zhang W, Gao M, Xv Y, Li S, Dong H, Chen D, Yan P, Dong Z. Urea Coated with Polyaspartic Acid-Chitosan Increases Foxtail Millet ( Setaria italica L. Beauv.) Grain Yield by Improving Nitrogen Metabolism. PLANTS (BASEL, SWITZERLAND) 2024; 13:415. [PMID: 38337948 PMCID: PMC10857690 DOI: 10.3390/plants13030415] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/28/2023] [Revised: 01/26/2024] [Accepted: 01/26/2024] [Indexed: 02/12/2024]
Abstract
Innovative measures of nitrogen (N) fertilization to increase season-long N availability is essential for gaining the optimal foxtail millet (Setaria italica L. Beauv.) productivity and N use efficiency. A split plot field experiment was conducted using the foxtail millet variety Huayougu 9 in 2020 and 2021 in Northeast China to clarify the physiological mechanism of a novel polyaspartic acid-chitosan (PAC)-coated urea on N assimilation and utilization from foxtail millet. Conventional N fertilizer (CN) and the urea-coated -PAC treatments were tested under six nitrogen fertilizer application levels of 0, 75, 112.5, 150, 225, and 337.5 kg N ha-1. The results showed that compared to CN, PN increased the foxtail millet yield by 5.53-15.75% and 10.43-16.17% in 2020 and 2021, respectively. PN increased the leaf area index and dry matter accumulation by 7.81-18.15% and 12.91-41.92%, respectively. PN also enhanced the activities of nitrate reductase, glutamine synthetase, glutamic oxaloacetic transaminase, and glutamic-pyruvic transaminase, thereby increasing the soluble protein in the leaf, plant, and grain N content at harvest compared to CN. Consequently, partial factor productivity from applied N, the agronomic efficiency of applied N, recovery efficiency of applied N, and physiological efficiency of applied N of foxtail millet under PN treatments compared to CN were increased. The improvement effect of the items above was more noticeable under the low-middle N application levels (75, 112.5, and 150 kg N ha-1). In conclusion, the PAC could achieve the goal of high yield and high N use efficiency in foxtail millet under the background of a one-time basic fertilizer application.
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Affiliation(s)
- Lin Lu
- Institute of Crop Sciences, Chinese Academy of Agricultural Sciences, Beijing 100081, China; (L.L.); (W.Z.); (Y.X.); (H.D.); (D.C.)
| | - Qi Wang
- Beijing Agricultural Technology Extension, Beijing 100029, China;
| | - Wei Zhang
- Institute of Crop Sciences, Chinese Academy of Agricultural Sciences, Beijing 100081, China; (L.L.); (W.Z.); (Y.X.); (H.D.); (D.C.)
- College of Resources and Environment, Shanxi Agricultural University, Jinzhong 030801, China
| | - Ming Gao
- Institute of Crop Resources Sciences, Jilin Academy of Agricultural Sciences, Changchun 130033, China; (M.G.); (S.L.)
| | - Yanli Xv
- Institute of Crop Sciences, Chinese Academy of Agricultural Sciences, Beijing 100081, China; (L.L.); (W.Z.); (Y.X.); (H.D.); (D.C.)
| | - Shujie Li
- Institute of Crop Resources Sciences, Jilin Academy of Agricultural Sciences, Changchun 130033, China; (M.G.); (S.L.)
| | - Haosheng Dong
- Institute of Crop Sciences, Chinese Academy of Agricultural Sciences, Beijing 100081, China; (L.L.); (W.Z.); (Y.X.); (H.D.); (D.C.)
| | - Disu Chen
- Institute of Crop Sciences, Chinese Academy of Agricultural Sciences, Beijing 100081, China; (L.L.); (W.Z.); (Y.X.); (H.D.); (D.C.)
| | - Peng Yan
- Institute of Crop Sciences, Chinese Academy of Agricultural Sciences, Beijing 100081, China; (L.L.); (W.Z.); (Y.X.); (H.D.); (D.C.)
| | - Zhiqiang Dong
- Institute of Crop Sciences, Chinese Academy of Agricultural Sciences, Beijing 100081, China; (L.L.); (W.Z.); (Y.X.); (H.D.); (D.C.)
- College of Resources and Environment, Shanxi Agricultural University, Jinzhong 030801, China
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He S, Wang H, Lv M, Li S, Song J, Wang R, Jiang S, Jiang L, Zhang S, Li X. Nanopore Direct RNA Sequencing Reveals the Short-Term Salt Stress Response in Maize Roots. PLANTS (BASEL, SWITZERLAND) 2024; 13:405. [PMID: 38337938 PMCID: PMC10857558 DOI: 10.3390/plants13030405] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/27/2023] [Revised: 01/09/2024] [Accepted: 01/24/2024] [Indexed: 02/12/2024]
Abstract
Transcriptome analysis, relying on the cutting-edge sequencing of cDNA libraries, has become increasingly prevalent within functional genome studies. However, the dependence on cDNA in most RNA sequencing technologies restricts their ability to detect RNA base modifications. To address this limitation, the latest Oxford Nanopore Direct RNA Sequencing (ONT DRS) technology was employed to investigate the transcriptome of maize seedling roots under salt stress. This approach aimed to unveil both the RNA transcriptional profiles and alterations in base modifications. The analysis of the differential expression revealed a total of 1398 genes and 2223 transcripts that exhibited significant variation within the maize root system following brief exposure to salt stress. Enrichment analyses, such as the Gene Ontology (GO) and Kyoto Encyclopedia of Genes and Genomes (KEGG) pathway assessments, highlighted the predominant involvement of these differentially expressed genes (DEGs) in regulating ion homeostasis, nitrogen metabolism, amino acid metabolism, and the phytohormone signaling pathways. The protein-protein interaction (PPI) analysis showed the participation of various proteins related to glycolytic metabolism, nitrogen metabolism, amino acid metabolism, abscisic acid signaling, and the jasmonate signaling pathways. It was through this intricate molecular network that these proteins collaborated to safeguard root cells against salt-induced damage. Moreover, under salt stress conditions, the occurrence of variable shear events (AS) in RNA modifications diminished, the average length of poly(A) tails underwent a slight decrease, and the number of genes at the majority of the variable polyadenylation (APA) sites decreased. Additionally, the levels of N5-methylcytosine (m5C) and N6-methyladenosine (m6A) showed a reduction. These results provide insights into the mechanisms of early salt tolerance in maize.
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Affiliation(s)
| | | | | | | | | | | | | | | | - Shuxin Zhang
- National Key Laboratory of Wheat Improvement, College of Life Sciences, Shandong Agricultural University, Tai’an 271018, China; (S.H.); (H.W.); (M.L.); (S.L.); (J.S.); (R.W.); (S.J.); (L.J.)
| | - Xiang Li
- National Key Laboratory of Wheat Improvement, College of Life Sciences, Shandong Agricultural University, Tai’an 271018, China; (S.H.); (H.W.); (M.L.); (S.L.); (J.S.); (R.W.); (S.J.); (L.J.)
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Nan Y, Xie Y, He H, Wu H, Gao L, Atif A, Zhang Y, Tian H, Hui J, Gao Y. Integrated BSA-seq and RNA-seq analysis to identify candidate genes associated with nitrogen utilization efficiency (NUtE) in rapeseed (Brassica napus L.). Int J Biol Macromol 2024; 254:127771. [PMID: 38287600 DOI: 10.1016/j.ijbiomac.2023.127771] [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: 08/12/2023] [Revised: 10/26/2023] [Accepted: 10/27/2023] [Indexed: 01/31/2024]
Abstract
Rapeseed (Brassica napus L.) is one of the important oil crops, with a high demand for nitrogen (N). It is essential to explore the potential of rapeseed to improve nitrogen utilization efficiency (NUtE). Rapeseed is an allotetraploid crop with a relatively large and complex genome, and there are few studies on the mapping of genes related to NUtE regulation. In this study, we used the combination of bulk segregant analysis sequencing (BSA-Seq) and RNA sequencing (RNA-Seq) to analyze the N-efficient genotype 'Zheyou 18' and N-inefficient genotype 'Sollux', to identify the genetic regulatory mechanisms. Several candidate genes were screened, such as the high-affinity nitrate transporter gene NRT2.1 (BnaC08g43370D) and the abscisic acid (ABA) signal transduction-related genes (BnaC02g14540D, BnaA03g20760D, and BnaA05g01330D). BnaA05g01330D was annotated as ABA-INDUCIBLE bHLH-TYPE TRANSCRIPTION FACTOR (AIB/bHLH17), which was highly expressed in the root. The results showed that the primary root length of the ataib mutant was significantly longer than that of the wild type under low N conditions. Overexpression of BnaA5.AIB could reduce the NUtE under low N levels in Arabidopsis (Arabidopsis thaliana). Candidate genes identified in this study may be involved in the regulation of NUtE in rapeseed, and new functions of AIB in orchestrating N uptake and utilization have been revealed. It is indicated that BnaA5.AIB may be the key factor that links ABA to N signaling and a negative regulator of NUtE. It will provide a theoretical basis and application prospect for resource conservation, environmental protection, and sustainable agricultural development.
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Affiliation(s)
- Yunyou Nan
- College of Natural Resources and Environment, Northwest A&F University, Yangling, Shaanxi, China
| | - Yuyu Xie
- College of Natural Resources and Environment, Northwest A&F University, Yangling, Shaanxi, China
| | - Huiying He
- College of Natural Resources and Environment, Northwest A&F University, Yangling, Shaanxi, China
| | - Han Wu
- College of Natural Resources and Environment, Northwest A&F University, Yangling, Shaanxi, China
| | - Lixing Gao
- College of Natural Resources and Environment, Northwest A&F University, Yangling, Shaanxi, China
| | - Ayub Atif
- College of Natural Resources and Environment, Northwest A&F University, Yangling, Shaanxi, China
| | - Yanfeng Zhang
- Hybrid Rapeseed Research Center of Shaanxi Province, Yangling, Shaanxi, China
| | - Hui Tian
- College of Natural Resources and Environment, Northwest A&F University, Yangling, Shaanxi, China.
| | - Jing Hui
- College of Natural Resources and Environment, Northwest A&F University, Yangling, Shaanxi, China.
| | - Yajun Gao
- College of Natural Resources and Environment, Northwest A&F University, Yangling, Shaanxi, China; Key Laboratory of Plant Nutrition and the Agri-environment in Northwest China, Ministry of Agriculture, Yangling, Shaanxi, China.
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11
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Kobercová E, Melo P, Fischer L. Validating the role of glutamine synthetase GLN2 during photorespiration in Arabidopsis thaliana. PLANT PHYSIOLOGY 2023; 194:324-328. [PMID: 37787606 PMCID: PMC10756748 DOI: 10.1093/plphys/kiad521] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/22/2023] [Revised: 09/18/2023] [Accepted: 09/20/2023] [Indexed: 10/04/2023]
Affiliation(s)
- Eliška Kobercová
- Faculty of Science, Department of Experimental Plant Biology, Charles University, Viničná 5, Prague 2, 128 44, Czech Republic
| | - Paula Melo
- Faculty of Sciences, Department of Biology and GreenUPorto - Research Centre on Sustainable Agrifood Production, University of Porto, Rua do Campo Alegre s/n, Porto, 4169-007, Portugal
| | - Lukáš Fischer
- Faculty of Science, Department of Experimental Plant Biology, Charles University, Viničná 5, Prague 2, 128 44, Czech Republic
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12
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Julian R, Patrick RM, Li Y. Organ-specific characteristics govern the relationship between histone code dynamics and transcriptional reprogramming during nitrogen response in tomato. Commun Biol 2023; 6:1225. [PMID: 38044380 PMCID: PMC10694154 DOI: 10.1038/s42003-023-05601-8] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/16/2022] [Accepted: 11/17/2023] [Indexed: 12/05/2023] Open
Abstract
Environmental stimuli trigger rapid transcriptional reprogramming of gene networks. These responses occur in the context of the local chromatin landscape, but the contribution of organ-specific dynamic chromatin modifications in responses to external signals remains largely unexplored. We treated tomato seedlings with a supply of nitrate and measured the genome-wide changes of four histone marks, the permissive marks H3K27ac, H3K4me3, and H3K36me3 and repressive mark H3K27me3, in shoots and roots separately, as well as H3K9me2 in shoots. Dynamic and organ-specific histone acetylation and methylation were observed at functionally relevant gene loci. Integration of transcriptomic and epigenomic datasets generated from the same organ revealed largely syngenetic relations between changes in transcript levels and histone modifications, with the exception of H3K27me3 in shoots, where an increased level of this repressive mark is observed at genes activated by nitrate. Application of a machine learning approach revealed organ-specific rules regarding the importance of individual histone marks, as H3K36me3 is the most successful mark in predicting gene regulation events in shoots, while H3K4me3 is the strongest individual predictor in roots. Our integrated study substantiates a view that during plant environmental responses, the relationships between histone code dynamics and gene regulation are highly dependent on organ-specific contexts.
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Affiliation(s)
- Russell Julian
- Department of Horticulture & Landscape Architecture, Purdue University, West Lafayette, IN, 47907, USA
- Center for Plant Biology, Purdue University, West Lafayette, IN, 47907, USA
| | - Ryan M Patrick
- Department of Horticulture & Landscape Architecture, Purdue University, West Lafayette, IN, 47907, USA
- Center for Plant Biology, Purdue University, West Lafayette, IN, 47907, USA
| | - Ying Li
- Department of Horticulture & Landscape Architecture, Purdue University, West Lafayette, IN, 47907, USA.
- Center for Plant Biology, Purdue University, West Lafayette, IN, 47907, USA.
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13
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Brambilla M, Chiari G, Commisso M, Nerva L, Musetti R, Petraglia A, Degola F. Glutamate dehydrogenase in "Liverworld"-A study in selected species to explore a key enzyme of plant primary metabolism in Marchantiophyta. PHYSIOLOGIA PLANTARUM 2023; 175:e14071. [PMID: 38148220 DOI: 10.1111/ppl.14071] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/02/2023] [Revised: 10/20/2023] [Accepted: 10/23/2023] [Indexed: 12/28/2023]
Abstract
In plants, glutamate dehydrogenase (GDH) is an ubiquitous enzyme that catalyzes the reversible amination of 2-oxoglutarate in glutamate. It contributes to both the amino acid homeostasis and the management of intracellular ammonium, and it is regarded as a key player at the junction of carbon and nitrogen assimilation pathways. To date, information about the GDH of terrestrial plants refers to a very few species only. We focused on selected species belonging to the division Marchantiophyta, providing the first panoramic overview of biochemical and functional features of GDH in liverworts. Native electrophoretic analyses showed an isoenzymatic profile less complex than what was reported for Arabidposis thaliana and other angiosperms: the presence of a single isoform corresponding to an α-homohexamer, differently prone to thermal inactivation on a species- and organ-basis, was found. Sequence analysis conducted on amino acid sequences confirmed a high similarity of GDH in modern liverworts with the GDH2 protein of A. thaliana, strengthening the hypothesis that the duplication event that gave origin to GDH1-homolog gene from GDH2 occurred after the evolutionary bifurcation that separated bryophytes and tracheophytes. Experiments conducted on Marchantia polymorpha and Calypogeia fissa grown in vitro and compared to A. thaliana demonstrated through in gel activity detection and monodimensional Western Blot that the aminating activity of GDH resulted in strongly enhanced responses to ammonium excess in liverworts as well, even if at a different extent compared to Arabidopsis and other vascular species. The comparative analysis by bi-dimensional Western Blot suggested that the regulation of the enzyme could be, at least partially, untied from the protein post-translational pattern. Finally, immuno-electron microscopy revealed that the GDH enzyme localizes at the subcellular level in both mitochondria and chloroplasts of parenchyma and is specifically associated to the endomembrane system in liverworts.
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Affiliation(s)
- Martina Brambilla
- Department of Chemistry, Life Science and Environmental Sustainability, University of Parma, Parma, Italy
| | - Giorgio Chiari
- Department of Chemistry, Life Science and Environmental Sustainability, University of Parma, Parma, Italy
| | - Mauro Commisso
- Department of Biotechnology, University of Verona, Verona, Italy
| | - Luca Nerva
- Council for Agricultural Research and Economics - Research Centre for Viticulture and Enology (CREA-VE), Conegliano, Italy
| | - Rita Musetti
- Department of Land, Environment, Agriculture and Forestry, University of Padova, Padova, Italy
| | - Alessandro Petraglia
- Department of Chemistry, Life Science and Environmental Sustainability, University of Parma, Parma, Italy
| | - Francesca Degola
- Department of Chemistry, Life Science and Environmental Sustainability, University of Parma, Parma, Italy
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14
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Wenck S, Mix T, Fischer M, Hackl T, Seifert S. Opening the Random Forest Black Box of 1H NMR Metabolomics Data by the Exploitation of Surrogate Variables. Metabolites 2023; 13:1075. [PMID: 37887402 PMCID: PMC10608983 DOI: 10.3390/metabo13101075] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/18/2023] [Revised: 10/05/2023] [Accepted: 10/10/2023] [Indexed: 10/28/2023] Open
Abstract
The untargeted metabolomics analysis of biological samples with nuclear magnetic resonance (NMR) provides highly complex data containing various signals from different molecules. To use these data for classification, e.g., in the context of food authentication, machine learning methods are used. These methods are usually applied as a black box, which means that no information about the complex relationships between the variables and the outcome is obtained. In this study, we show that the random forest-based approach surrogate minimal depth (SMD) can be applied for a comprehensive analysis of class-specific differences by selecting relevant variables and analyzing their mutual impact on the classification model of different truffle species. SMD allows the assignment of variables from the same metabolites as well as the detection of interactions between different metabolites that can be attributed to known biological relationships.
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Affiliation(s)
- Soeren Wenck
- Institute of Food Chemistry, Hamburg School of Food Science, University of Hamburg, Grindelallee 117, 20146 Hamburg, Germany (M.F.); (T.H.)
| | - Thorsten Mix
- Institute of Organic Chemistry, University of Hamburg, Martin-Luther-King-Platz 6, 20146 Hamburg, Germany;
| | - Markus Fischer
- Institute of Food Chemistry, Hamburg School of Food Science, University of Hamburg, Grindelallee 117, 20146 Hamburg, Germany (M.F.); (T.H.)
| | - Thomas Hackl
- Institute of Food Chemistry, Hamburg School of Food Science, University of Hamburg, Grindelallee 117, 20146 Hamburg, Germany (M.F.); (T.H.)
- Institute of Organic Chemistry, University of Hamburg, Martin-Luther-King-Platz 6, 20146 Hamburg, Germany;
| | - Stephan Seifert
- Institute of Food Chemistry, Hamburg School of Food Science, University of Hamburg, Grindelallee 117, 20146 Hamburg, Germany (M.F.); (T.H.)
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15
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Zhang C, Li Y, Yang T, Shi M. Overexpression of PsAMT1.2 in poplar enhances nitrogen utilization and resistance to drought stress. TREE PHYSIOLOGY 2023; 43:1796-1810. [PMID: 37384396 DOI: 10.1093/treephys/tpad082] [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: 01/28/2023] [Revised: 06/07/2023] [Accepted: 06/20/2023] [Indexed: 07/01/2023]
Abstract
Ammonium is an important form of inorganic nitrogen, which is essential for plant growth and development, and the uptake of ammonium is mediated by different members of ammonium transporters (AMTs). It is reported that PsAMT1.2 is specially expressed in the root of poplar, and the overexpression of PsAMT1.2 could improve plant growth and the salt tolerance of poplar. However, the role of AMTs in plant drought and low nitrogen (LN) resistance remains unclear. To understand the role of PsAMT1.2 in drought and LN tolerance, the response of PsAMT1.2-overexpression poplar to polyethylene glycol (PEG)-simulated drought stress (5% PEG) under LN (0.001 mM NH4NO3) and moderate nitrogen (0.5 mM NH4NO3) conditions was investigated. The PsAMT1.2-overexpression poplar showed better growth with increased stem increment, net photosynthetic rate, chlorophyll content, root length, root area, average root diameter and root volume under drought and/or LN stress compared with the wild type (WT). Meanwhile, the content of malondialdehyde significantly decreased, and the activities of superoxide dismutase and catalase significantly increased in the roots and leaves of PsAMT1.2-overexpression poplar compared with WT. The content of NH4+ and NO2- in the roots and leaves of PsAMT1.2-overexpression poplar was increased, and nitrogen metabolism-related genes, such as GS1.3, GS2, Fd-GOGAT and NADH-GOGAT, were significantly upregulated in the roots and/or leaves of PsAMT1.2-overexpression poplar compared with WT under drought and LN stress. The result of this study would be helpful for understanding the function of PsAMT1.2 in plant drought and LN tolerance and also provides a new insight into improving the drought and LN tolerance of Populus at the molecular level.
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Affiliation(s)
- Chunxia Zhang
- College of Forestry, Northwest A&F University, 3 Taicheng Road, Yangling 712100, Shaanxi Province, China
| | - Yang Li
- College of Forestry, Northwest A&F University, 3 Taicheng Road, Yangling 712100, Shaanxi Province, China
| | - Tianli Yang
- College of Forestry, Northwest A&F University, 3 Taicheng Road, Yangling 712100, Shaanxi Province, China
| | - Mengting Shi
- College of Forestry, Northwest A&F University, 3 Taicheng Road, Yangling 712100, Shaanxi Province, China
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16
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Zhu J, Dai W, Chen B, Cai G, Wu X, Yan G. Research Progress on the Effect of Nitrogen on Rapeseed between Seed Yield and Oil Content and Its Regulation Mechanism. Int J Mol Sci 2023; 24:14504. [PMID: 37833952 PMCID: PMC10572985 DOI: 10.3390/ijms241914504] [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: 08/23/2023] [Revised: 09/10/2023] [Accepted: 09/19/2023] [Indexed: 10/15/2023] Open
Abstract
Rapeseed (Brassica napus L.) is one of the most important oil crops in China. Improving the oil production of rapeseed is an important way to ensure the safety of edible oil in China. Oil production is an important index that reflects the quality of rapeseed and is determined by the oil content and yield. Applying nitrogen is an important way to ensure a strong and stable yield. However, the seed oil content has been shown to be reduced in most rapeseed varieties after nitrogen application. Thus, it is critical to screen elite germplasm resources with stable or improved oil content under high levels of nitrogen, and to investigate the molecular mechanisms of the regulation by nitrogen of oil accumulation. However, few studies on these aspects have been published. In this review, we analyze the effect of nitrogen on the growth and development of rapeseed, including photosynthetic assimilation, substance distribution, and the synthesis of lipids and proteins. In this process, the expression levels of genes related to nitrogen absorption, assimilation, and transport changed after nitrogen application, which enhanced the ability of carbon and nitrogen assimilation and increased biomass, thus leading to a higher yield. After a crop enters the reproductive growth phase, photosynthates in the body are transported to the developing seed for protein and lipid synthesis. However, protein synthesis precedes lipid synthesis, and a large number of photosynthates are consumed during protein synthesis, which weakens lipid synthesis. Moreover, we suggest several research directions, especially for exploring genes involved in lipid and protein accumulation under nitrogen regulation. In this study, we summarize the effects of nitrogen at both the physiological and molecular levels, aiming to reveal the mechanisms of nitrogen regulation in oil accumulation and, thereby, provide a theoretical basis for breeding varieties with a high oil content.
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Affiliation(s)
| | | | | | | | | | - Guixin Yan
- The Key Laboratory of Biology and Genetic Improvement of Oil Crops, The Ministry of Agriculture and Rural Affairs of the PRC, Oil Crops Research Institute of the Chinese Academy of Agricultural Sciences, Wuhan 430062, China; (J.Z.)
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17
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Hooker JC, Smith M, Zapata G, Charette M, Luckert D, Mohr RM, Daba KA, Warkentin TD, Hadinezhad M, Barlow B, Hou A, Lefebvre F, Golshani A, Cober ER, Samanfar B. Differential gene expression provides leads to environmentally regulated soybean seed protein content. FRONTIERS IN PLANT SCIENCE 2023; 14:1260393. [PMID: 37790790 PMCID: PMC10544915 DOI: 10.3389/fpls.2023.1260393] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 07/17/2023] [Accepted: 08/23/2023] [Indexed: 10/05/2023]
Abstract
Soybean is an important global source of plant-based protein. A persistent trend has been observed over the past two decades that soybeans grown in western Canada have lower seed protein content than soybeans grown in eastern Canada. In this study, 10 soybean genotypes ranging in average seed protein content were grown in an eastern location (control) and three western locations (experimental) in Canada. Seed protein and oil contents were measured for all lines in each location. RNA-sequencing and differential gene expression analysis were used to identify differentially expressed genes that may account for relatively low protein content in western-grown soybeans. Differentially expressed genes were enriched for ontologies and pathways that included amino acid biosynthesis, circadian rhythm, starch metabolism, and lipid biosynthesis. Gene ontology, pathway mapping, and quantitative trait locus (QTL) mapping collectively provide a close inspection of mechanisms influencing nitrogen assimilation and amino acid biosynthesis between soybeans grown in the East and West. It was found that western-grown soybeans had persistent upregulation of asparaginase (an asparagine hydrolase) and persistent downregulation of asparagine synthetase across 30 individual differential expression datasets. This specific difference in asparagine metabolism between growing environments is almost certainly related to the observed differences in seed protein content because of the positive correlation between seed protein content at maturity and free asparagine in the developing seed. These results provided pointed information on seed protein-related genes influenced by environment. This information is valuable for breeding programs and genetic engineering of geographically optimized soybeans.
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Affiliation(s)
- Julia C. Hooker
- Ottawa Research and Development Centre, Agriculture and Agri-Food Canada, Ottawa, ON, Canada
- Department of Biology, Ottawa Institute of Systems Biology, Carleton University, Ottawa, ON, Canada
| | - Myron Smith
- Department of Biology, Ottawa Institute of Systems Biology, Carleton University, Ottawa, ON, Canada
| | - Gerardo Zapata
- Canadian Centre for Computational Genomics, Montréal, QC, Canada
| | - Martin Charette
- Ottawa Research and Development Centre, Agriculture and Agri-Food Canada, Ottawa, ON, Canada
| | - Doris Luckert
- Ottawa Research and Development Centre, Agriculture and Agri-Food Canada, Ottawa, ON, Canada
| | - Ramona M. Mohr
- Brandon Research Centre, Agriculture and Agri-Food Canada, Brandon, MB, Canada
| | - Ketema A. Daba
- Crop Development Centre, University of Saskatchewan, Saskatoon, SK, Canada
| | | | - Mehri Hadinezhad
- Ottawa Research and Development Centre, Agriculture and Agri-Food Canada, Ottawa, ON, Canada
| | - Brent Barlow
- Crop Development Centre, University of Saskatchewan, Saskatoon, SK, Canada
| | - Anfu Hou
- Morden Research and Development Centre, Agriculture and Agri-Food Canada, Morden, MB, Canada
| | | | - Ashkan Golshani
- Department of Biology, Ottawa Institute of Systems Biology, Carleton University, Ottawa, ON, Canada
| | - Elroy R. Cober
- Ottawa Research and Development Centre, Agriculture and Agri-Food Canada, Ottawa, ON, Canada
| | - Bahram Samanfar
- Ottawa Research and Development Centre, Agriculture and Agri-Food Canada, Ottawa, ON, Canada
- Department of Biology, Ottawa Institute of Systems Biology, Carleton University, Ottawa, ON, Canada
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18
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Sanow S, Kuang W, Schaaf G, Huesgen P, Schurr U, Roessner U, Watt M, Arsova B. Molecular Mechanisms of Pseudomonas-Assisted Plant Nitrogen Uptake: Opportunities for Modern Agriculture. MOLECULAR PLANT-MICROBE INTERACTIONS : MPMI 2023; 36:536-548. [PMID: 36989040 DOI: 10.1094/mpmi-10-22-0223-cr] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/19/2023]
Abstract
Pseudomonas spp. make up 1.6% of the bacteria in the soil and are found throughout the world. More than 140 species of this genus have been identified, some beneficial to the plant. Several species in the family Pseudomonadaceae, including Azotobacter vinelandii AvOP, Pseudomonas stutzeri A1501, Pseudomonas stutzeri DSM4166, Pseudomonas szotifigens 6HT33bT, and Pseudomonas sp. strain K1 can fix nitrogen from the air. The genes required for these reactions are organized in a nitrogen fixation island, obtained via horizontal gene transfer from Klebsiella pneumoniae, Pseudomonas stutzeri, and Azotobacter vinelandii. Today, this island is conserved in Pseudomonas spp. from different geographical locations, which, in turn, have evolved to deal with different geo-climatic conditions. Here, we summarize the molecular mechanisms behind Pseudomonas-driven plant growth promotion, with particular focus on improving plant performance at limiting nitrogen (N) and improving plant N content. We describe Pseudomonas-plant interaction strategies in the soil, noting that the mechanisms of denitrification, ammonification, and secondary metabolite signaling are only marginally explored. Plant growth promotion is dependent on the abiotic conditions and differs at sufficient and deficient N. The molecular controls behind different plant responses are not fully elucidated. We suggest that superposition of transcriptome, proteome, and metabolome data and their integration with plant phenotype development through time will help fill these gaps. The aim of this review is to summarize the knowledge behind Pseudomonas-driven nitrogen fixation and to point to possible agricultural solutions. [Formula: see text] Copyright © 2023 The Author(s). This is an open access article distributed under the CC BY 4.0 International license.
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Affiliation(s)
- Stefan Sanow
- Institute for Bio- and Geosciences, Plant Sciences (IBG-2), Forschungszentrum Juelich GmbH, Germany
- School of BioSciences, Faculty of Science, The University of Melbourne, Parkville, 3010 Victoria, Australia
| | - Weiqi Kuang
- College of life and Environmental Sciences, Hunan University of Arts and Science, China
| | - Gabriel Schaaf
- Institute of Crop Science and Resource Conservation, University of Bonn, 53115 Bonn, Germany
| | - Pitter Huesgen
- Central institute for Engineering, Electronics and Analytics (ZEA-3), Forschungszentrum Juelich GmbH, Germany
| | - Ulrich Schurr
- Institute for Bio- and Geosciences, Plant Sciences (IBG-2), Forschungszentrum Juelich GmbH, Germany
| | - Ute Roessner
- Research School of Biology, The Australian National University, Acton, 2601 Australian Capital Territory, Australia
| | - Michelle Watt
- School of BioSciences, Faculty of Science, The University of Melbourne, Parkville, 3010 Victoria, Australia
| | - Borjana Arsova
- Institute for Bio- and Geosciences, Plant Sciences (IBG-2), Forschungszentrum Juelich GmbH, Germany
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19
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Sun AZ, Chen JH, Jin XQ, Li H, Guo FQ. Supplementing the Nuclear-Encoded PSII Subunit D1 Induces Dramatic Metabolic Reprogramming in Flag Leaves during Grain Filling in Rice. PLANTS (BASEL, SWITZERLAND) 2023; 12:3009. [PMID: 37631220 PMCID: PMC10458752 DOI: 10.3390/plants12163009] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/28/2023] [Revised: 08/11/2023] [Accepted: 08/14/2023] [Indexed: 08/27/2023]
Abstract
Our previous study has demonstrated that the nuclear-origin supplementation of the PSII core subunit D1 protein stimulates growth and increases grain yields in transgenic rice plants by enhancing photosynthetic efficiency. In this study, the underlying mechanisms have been explored regarding how the enhanced photosynthetic capacity affects metabolic activities in the transgenic plants of rice harboring the integrated transgene RbcSPTP-OspsbA cDNA, cloned from rice, under control of the AtHsfA2 promoter and N-terminal fused with the plastid-transit peptide sequence (PTP) cloned from the AtRbcS. Here, a comparative metabolomic analysis was performed using LC-MS in flag leaves of the transgenic rice plants during the grain-filling stage. Critically, the dramatic reduction in the quantities of nucleotides and certain free amino acids was detected, suggesting that the increased photosynthetic assimilation and grain yield in the transgenic plants correlates with the reduced contents of free nucleotides and the amino acids such as glutamine and glutamic acid, which are cellular nitrogen sources. These results suggest that enhanced photosynthesis needs consuming more free nucleotides and nitrogen sources to support the increase in biomass and yields, as exhibited in transgenic rice plants. Unexpectedly, dramatic changes were measured in the contents of flavonoids in the flag leaves, suggesting that a tight and coordinated relationship exists between increasing photosynthetic assimilation and flavonoid biosynthesis. Consistent with the enhanced photosynthetic efficiency, the substantial increase was measured in the content of starch, which is the primary product of the Calvin-Benson cycle, in the transgenic rice plants under field growth conditions.
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Affiliation(s)
- Ai-Zhen Sun
- The National Key Laboratory of Plant Molecular Genetics and CAS Center for Excellence in Molecular Plant Sciences, Institute of Plant Physiology & Ecology, Chinese Academy of Sciences, Shanghai 200032, China; (A.-Z.S.); (J.-H.C.); (X.-Q.J.); (H.L.)
| | - Juan-Hua Chen
- The National Key Laboratory of Plant Molecular Genetics and CAS Center for Excellence in Molecular Plant Sciences, Institute of Plant Physiology & Ecology, Chinese Academy of Sciences, Shanghai 200032, China; (A.-Z.S.); (J.-H.C.); (X.-Q.J.); (H.L.)
| | - Xue-Qi Jin
- The National Key Laboratory of Plant Molecular Genetics and CAS Center for Excellence in Molecular Plant Sciences, Institute of Plant Physiology & Ecology, Chinese Academy of Sciences, Shanghai 200032, China; (A.-Z.S.); (J.-H.C.); (X.-Q.J.); (H.L.)
- University of Chinese Academy of Sciences, Beijing 100049, China
| | - Han Li
- The National Key Laboratory of Plant Molecular Genetics and CAS Center for Excellence in Molecular Plant Sciences, Institute of Plant Physiology & Ecology, Chinese Academy of Sciences, Shanghai 200032, China; (A.-Z.S.); (J.-H.C.); (X.-Q.J.); (H.L.)
- University of Chinese Academy of Sciences, Beijing 100049, China
| | - Fang-Qing Guo
- The National Key Laboratory of Plant Molecular Genetics and CAS Center for Excellence in Molecular Plant Sciences, Institute of Plant Physiology & Ecology, Chinese Academy of Sciences, Shanghai 200032, China; (A.-Z.S.); (J.-H.C.); (X.-Q.J.); (H.L.)
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20
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Ma X, Nian J, Yu H, Zhang F, Feng T, Kou L, Zhang J, Wang D, Li H, Chen L, Dong G, Xie X, Wang G, Qian Q, Li J, Zuo J. Linking glucose signaling to nitrogen utilization by the OsHXK7-ARE4 complex in rice. Dev Cell 2023; 58:1489-1501.e5. [PMID: 37413992 DOI: 10.1016/j.devcel.2023.06.003] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/06/2022] [Revised: 04/09/2023] [Accepted: 06/09/2023] [Indexed: 07/08/2023]
Abstract
How reciprocal regulation of carbon and nitrogen metabolism works is a long-standing question. In plants, glucose and nitrate are proposed to act as signaling molecules, regulating carbon and nitrogen metabolism via largely unknown mechanisms. Here, we show that the MYB-related transcription factor ARE4 coordinates glucose signaling and nitrogen utilization in rice. ARE4 is retained in the cytosol in complexing with the glucose sensor OsHXK7. Upon sensing a glucose signal, ARE4 is released, is translocated into the nucleus, and activates the expression of a subset of high-affinity nitrate transporter genes, thereby boosting nitrate uptake and accumulation. This regulatory scheme displays a diurnal pattern in response to circadian changes of soluble sugars. The are4 mutations compromise in nitrate utilization and plant growth, whereas overexpression of ARE4 increases grain size. We propose that the OsHXK7-ARE4 complex links glucose to the transcriptional regulation of nitrogen utilization, thereby coordinating carbon and nitrogen metabolism.
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Affiliation(s)
- Xiaohui Ma
- State Key Laboratory of Plant Genomics, Institute of Genetics and Developmental Biology, Chinese Academy of Sciences, Beijing 100101, China; College of Advanced Agricultural Sciences, University of Chinese Academy of Sciences, Beijing 100049, China
| | - Jinqiang Nian
- State Key Laboratory of Plant Genomics, Institute of Genetics and Developmental Biology, Chinese Academy of Sciences, Beijing 100101, China; College of Advanced Agricultural Sciences, University of Chinese Academy of Sciences, Beijing 100049, China
| | - Hong Yu
- State Key Laboratory of Plant Genomics, Institute of Genetics and Developmental Biology, Chinese Academy of Sciences, Beijing 100101, China
| | - Fengxia Zhang
- State Key Laboratory of Plant Genomics, Institute of Genetics and Developmental Biology, Chinese Academy of Sciences, Beijing 100101, China
| | - Tianpeng Feng
- State Key Laboratory of Plant Genomics, Institute of Genetics and Developmental Biology, Chinese Academy of Sciences, Beijing 100101, China; College of Advanced Agricultural Sciences, University of Chinese Academy of Sciences, Beijing 100049, China
| | - Liquan Kou
- State Key Laboratory of Plant Genomics, Institute of Genetics and Developmental Biology, Chinese Academy of Sciences, Beijing 100101, China
| | - Jian Zhang
- State Key Laboratory of Plant Genomics, Institute of Genetics and Developmental Biology, Chinese Academy of Sciences, Beijing 100101, China
| | - Danfeng Wang
- State Key Laboratory of Plant Genomics, Institute of Genetics and Developmental Biology, Chinese Academy of Sciences, Beijing 100101, China; College of Advanced Agricultural Sciences, University of Chinese Academy of Sciences, Beijing 100049, China
| | - Hanwen Li
- State Key Laboratory of Plant Genomics, Institute of Genetics and Developmental Biology, Chinese Academy of Sciences, Beijing 100101, China; College of Advanced Agricultural Sciences, University of Chinese Academy of Sciences, Beijing 100049, China
| | - Lichao Chen
- State Key Laboratory of Plant Genomics, Institute of Genetics and Developmental Biology, Chinese Academy of Sciences, Beijing 100101, China; College of Advanced Agricultural Sciences, University of Chinese Academy of Sciences, Beijing 100049, China
| | - Guojun Dong
- State Key Laboratory of Rice Biology, China National Rice Research Institute, Chinese Academy of Agricultural Sciences, Hangzhou 310006, China
| | - Xianzhi Xie
- Institute of Wetland Agriculture and Ecology, Shandong Academy of Agricultural Sciences, Jinan 250100, China
| | - Guodong Wang
- State Key Laboratory of Plant Genomics, Institute of Genetics and Developmental Biology, Chinese Academy of Sciences, Beijing 100101, China; College of Advanced Agricultural Sciences, University of Chinese Academy of Sciences, Beijing 100049, China
| | - Qian Qian
- State Key Laboratory of Rice Biology, China National Rice Research Institute, Chinese Academy of Agricultural Sciences, Hangzhou 310006, China
| | - Jiayang Li
- State Key Laboratory of Plant Genomics, Institute of Genetics and Developmental Biology, Chinese Academy of Sciences, Beijing 100101, China; College of Advanced Agricultural Sciences, University of Chinese Academy of Sciences, Beijing 100049, China.
| | - Jianru Zuo
- State Key Laboratory of Plant Genomics, Institute of Genetics and Developmental Biology, Chinese Academy of Sciences, Beijing 100101, China; College of Advanced Agricultural Sciences, University of Chinese Academy of Sciences, Beijing 100049, China; C.A.S. Center for Excellence in Molecular Plant Sciences, Chinese Academy of Sciences, Beijing 100101, China; Hainan Seed Laboratory, Sanya 572025, Hainan, China.
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21
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Wang J, Wang Y, Gu Z, Mou H, Sun H. Stimulating carbon and nitrogen metabolism of Chlorella pyrenoidosa to treat aquaculture wastewater and produce high-quality protein in plate photobioreactors. THE SCIENCE OF THE TOTAL ENVIRONMENT 2023; 878:163061. [PMID: 36963682 DOI: 10.1016/j.scitotenv.2023.163061] [Citation(s) in RCA: 3] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/29/2023] [Revised: 03/08/2023] [Accepted: 03/21/2023] [Indexed: 05/13/2023]
Abstract
Wastewater treatment by microalgae is the economical and environmentally friendly strategy, but is still challenged with the strict discharge standards and valuable biomass exploitations. The carbon and nitrogen metabolism of Chlorella pyrenoidosa was improved by the red LED light and starch addition to treat Tilapia aquaculture wastewater (T-AW) and produce protein simultaneously in a plate photobioreactor. The red LED light was applied to improve the nutrient removals at an outdoor temperature, but the concentrations except total nitrogen did not satisfy the discharge standards. After starch addition, the removal efficiencies of total phosphorus, total nitrogen, chemical oxygen demand, and total ammonia nitrogen were 85.15, 96.96, 88.53, and 98.01 % in a flat-plate photobioreactor, respectively, which met the discharge standards and the protein production reached 0.60 g/L. At a molecular level, the metabolic flux and transcriptome analyses showed that red light promoted carbon flux of the Embden-Meyerhof-Pranas pathway and tricarboxylic cycle, and upregulated the levels of genes encoding α-amylase, glutamine synthetase, glutamate dehydrogenase, nitrate transporter, and ammonium transporter, which facilitated nutrients removal and provided nitrogen sources for protein biosynthesis. The harvesting C. pyrenoidosa possessed the 62 % essential amino acids and great lipid composition for biofuels. This study provided a new orientation for outdoor wastewater treatment and protein production by collaboratively regulating the carbon and nitrogen metabolism of microalgae.
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Affiliation(s)
- Jia Wang
- College of Food Science and Engineering, Ocean University of China, Qingdao 266003, China
| | - Yuxin Wang
- College of Food Science and Engineering, Ocean University of China, Qingdao 266003, China
| | - Ziqiang Gu
- College of Food Science and Engineering, Ocean University of China, Qingdao 266003, China
| | - Haijin Mou
- College of Food Science and Engineering, Ocean University of China, Qingdao 266003, China.
| | - Han Sun
- Institute for Advanced Study, Shenzhen University, Shenzhen 518060, China.
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22
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Sun M, Jordan B, Creasy G, Zhu YF. UV-B Radiation Induced the Changes in the Amount of Amino Acids, Phenolics and Aroma Compounds in Vitis vinifera cv. Pinot Noir Berry under Field Conditions. Foods 2023; 12:2350. [PMID: 37372561 DOI: 10.3390/foods12122350] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/24/2023] [Revised: 05/17/2023] [Accepted: 05/23/2023] [Indexed: 06/29/2023] Open
Abstract
High UV-B radiation can challenge Pinot noir growth in the wine-making region of the Southern Hemisphere. The aim of this work was to determine UV-B effects on amino acids, phenolic composition and aroma compounds of Pinot noir fruit. Sunlight exposure with or without UV-B did not affect fruit production capacity, °Brix and total amino acids in the vineyard over the two years. This research reported increased contents of skin anthocyanin and skin total phenolics in berry skins under UV-B. The research showed that there were no changes in C6 compounds. Some monoterpenes concentrations were decreased by UV-B. The information also indicated how important leaf canopy management was for vineyard management. Therefore, UV radiation potentially affected fruit ripeness and crop load, and even stimulated the accumulation of phenolic compounds that may affect Pinot noir quality. This research reported that canopy management (UV-B exposure) may be a good way for vineyard management to increase the accumulation of anthocyanins and tannins in berry skins.
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Affiliation(s)
- Meng Sun
- Centre for Viticulture and Oenology, Faculty of Agriculture and Life Sciences, Lincoln University, Christchurch 7647, New Zealand
- Institute of Pomology, Jiangsu Academy of Agricultural Sciences/Jiangsu Key Laboratory for Horticultural Crop Genetic Improvement, No. 50 Zhongling Street, Nanjing 210014, China
| | - Brian Jordan
- Centre for Viticulture and Oenology, Faculty of Agriculture and Life Sciences, Lincoln University, Christchurch 7647, New Zealand
| | - Glen Creasy
- Centre for Viticulture and Oenology, Faculty of Agriculture and Life Sciences, Lincoln University, Christchurch 7647, New Zealand
- SCEA Terre des 2 Sources, La Plaine, 34190 Montoulieu, France
| | - Yi-Fan Zhu
- College of Food Science and Technology, Yunnan Agricultural University, Kunming 650201, China
- Centre for Viticulture and Oenology, Faculty of Agriculture and Life Sciences, Lincoln University, Christchurch 7647, New Zealand
- University Engineering Research Center for Grape & Wine of Yunan Province, Yunnan Agricultural University, Kunming 650201, China
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23
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Abdelsattar AM, Elsayed A, El-Esawi MA, Heikal YM. Enhancing Stevia rebaudiana growth and yield through exploring beneficial plant-microbe interactions and their impact on the underlying mechanisms and crop sustainability. PLANT PHYSIOLOGY AND BIOCHEMISTRY : PPB 2023; 198:107673. [PMID: 37030249 DOI: 10.1016/j.plaphy.2023.107673] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/27/2022] [Revised: 03/22/2023] [Accepted: 03/27/2023] [Indexed: 05/07/2023]
Abstract
Stevia rebaudiana is an important medicinal plant which represents the most important sugar substitute in many countries. Poor seed germination of this plant is a critical problem that affects the final yield and the availability of the products in the market. Continuous cropping without supplying soil nutrients is also a serious issue as it results in declining soil fertility. This review highlights the important use of beneficial bacteria for the enhancement of Stevia rebaudiana growth and its dynamic interactions in the phyllosphere, rhizosphere, and endosphere. Fertilizers can increase crop yield and preserve and improve soil fertility. There is a rising concern that prolonged usage of chemical fertilizers may have negative impacts on the ecosystem of the soil. On the other hand, soil health and fertility are improved by plant growth-promoting bacteria which could eventually increase plant growth and productivity. Accordingly, a biocompatible strategy involving beneficial microorganisms inoculation is applied to boost plant growth and reduce the negative effects of chemical fertilizers. Plants benefit extensively from endophytic bacteria, which promote growth and induce resistance to pathogens and stresses. Additionally, several plant growth-promoting bacteria are able to produce amino acids, polyamines, and hormones that can be used as alternatives to chemicals. Therefore, understanding the dynamic interactions between bacteria and Stevia can help make the favorable bacterial bio-formulations, use them more effectively, and apply them to Stevia to improve yield and quality.
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Affiliation(s)
- Amal M Abdelsattar
- Botany Department, Faculty of Science, Mansoura University, 35516, Mansoura, Egypt.
| | - Ashraf Elsayed
- Botany Department, Faculty of Science, Mansoura University, 35516, Mansoura, Egypt
| | - Mohamed A El-Esawi
- Botany Department, Faculty of Science, Tanta University, 31527, Tanta, Egypt; Photobiology Research Group, Sorbonne Université CNRS, 75005, Paris, France
| | - Yasmin M Heikal
- Botany Department, Faculty of Science, Mansoura University, 35516, Mansoura, Egypt
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24
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Choi SJ, Lee Z, Jeong E, Kim S, Seo JS, Um T, Shim JS. Signaling pathways underlying nitrogen transport and metabolism in plants. BMB Rep 2023; 56:56-64. [PMID: 36658636 PMCID: PMC9978367] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/18/2022] [Indexed: 01/21/2023] Open
Abstract
Nitrogen (N) is an essential macronutrient required for plant growth and crop production. However, N in soil is usually insufficient for plant growth. Thus, chemical N fertilizer has been extensively used to increase crop production. Due to negative effects of N rich fertilizer on the environment, improving N usage has been a major issue in the field of plant science to achieve sustainable production of crops. For that reason, many efforts have been made to elucidate how plants regulate N uptake and utilization according to their surrounding habitat over the last 30 years. Here, we provide recent advances focusing on regulation of N uptake, allocation of N by N transporting system, and signaling pathway controlling N responses in plants. [BMB Reports 2023; 56(2): 56-64].
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Affiliation(s)
- Su Jeong Choi
- School of Biological Sciences and Technology, Chonnam National University, Gwangju 61186, Korea
| | - Zion Lee
- School of Biological Sciences and Technology, Chonnam National University, Gwangju 61186, Korea
| | - Eui Jeong
- School of Biological Sciences and Technology, Chonnam National University, Gwangju 61186, Korea
| | - Sohyun Kim
- School of Biological Sciences and Technology, Chonnam National University, Gwangju 61186, Korea
| | - Jun Sung Seo
- Crop Biotechnology Institute, Green Bio Science and Technology, Seoul National University, Pyeongchang 25354, Korea
| | - Taeyoung Um
- Agriculture and Life Sciences Research Institute, Kangwon National University, Chuncheon 24341, Korea
| | - Jae Sung Shim
- School of Biological Sciences and Technology, Chonnam National University, Gwangju 61186, Korea,Corresponding author. Tel: +82-62-530-0507; Fax: +82-62-530-2199; E-mail:
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25
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Zhao L, Tang Q, Song Z, Yin Y, Wang G, Li Y. Increasing the yield of drip-irrigated rice by improving photosynthetic performance and enhancing nitrogen metabolism through optimizing water and nitrogen management. FRONTIERS IN PLANT SCIENCE 2023; 14:1075625. [PMID: 36909451 PMCID: PMC9997648 DOI: 10.3389/fpls.2023.1075625] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 10/20/2022] [Accepted: 02/13/2023] [Indexed: 06/18/2023]
Abstract
Drip irrigation under plastic film mulching is an important technique to achieve water-conserving and high-efficiency rice (Oryza sativa L.) production in arid areas, but the grain yield of drip-irrigated rice is much lower than the expected yield (10.9-12.05 t·hm-2) in practical production applications. Therefore, we hope to further understand the photosynthetic physiological mechanism of drip-irrigated rice yield formation by optimizing water and nitrogen management during the growth period and provide a scientific reference for improving yield and nitrogen use efficiency (NUE) of drip-irrigated rice in arid areas. In 2020 and 2021, T-43 (a drought-resistant; V1) and Liangxiang-3 (a drought-sensitive cultivar; V2) were cultivated under two water treatments (W1: limited drip irrigation, 10200 m3·hm-2; W2: deficit drip irrigation, 8670 m3·hm-2) and three nitrogen fertilization modes with different ratios of seedling fertilizer:tillering fertilizer:panicle fertilizer:grain fertilizer (N1, 30%:50%:13%:7%; N2, 20%:40%:30%:10%; and N3, 10%:30%:40%:20%). The photosynthetic characteristics, nitrogen metabolism, yield, and NUE were analysed. The results showed that compared with other treatments, the W1N2 resulted in 153.4-930.3% higher glutamate dehydrogenase (GDH) contents and 19.2-49.7% higher net photosynthetic rates (P n) in the leaves of the two cultivars at 20 days after heading, as well as higher yields and NUE. The two cultivars showed no significant difference in the physiological changes at the panicle initiation stage, but the P n, abscisic acid (ABA), indole acetic acid (IAA), gibberellic acid (GA3), and zeatin riboside (ZR) levels of V1 were higher than those of V2 by 53.1, 25.1, 21.1, 46.3 and 36.8%, respectively, at 20 days after heading. Hence, V1 had a higher yield and NUE than V2. Principal component analysis revealed that P n and GDH were the most important physiological factors affecting rice yield performance. In summary, the W1N2 treatment simultaneously improved the yield and NUE of the drought-resistant rice cultivar (T-43) by enhancing the photosynthetic characteristics and nitrogen transport capacity and coordinating the balance of endogenous hormones (ABA, IAA, GA3, and ZR) in the leaves.
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Affiliation(s)
- Lei Zhao
- Key Laboratory of Oasis Eco-Agriculture, Xinjiang Production and Construction Group, Shihezi University, Shihezi, Xinjiang, China
| | - Qingyun Tang
- Key Laboratory of Oasis Eco-Agriculture, Xinjiang Production and Construction Group, Shihezi University, Shihezi, Xinjiang, China
| | - Zhiwen Song
- Key Laboratory of Oasis Eco-Agriculture, Xinjiang Production and Construction Group, Shihezi University, Shihezi, Xinjiang, China
| | - Yongan Yin
- Xinjiang Tianye Group Ltd., Shihezi, Xinjiang, China
| | - Guodong Wang
- Institute of Farmland Water Conservancy and Soil-Fertilizer, Xinjiang Academy of Agricultural Reclamation Science or Key Laboratory of Northwest Oasis Water-Saving Agriculture, Ministry of Agriculture and Rural Affairs, Shihezi, Xinjiang, China
| | - Yuxiang Li
- Key Laboratory of Oasis Eco-Agriculture, Xinjiang Production and Construction Group, Shihezi University, Shihezi, Xinjiang, China
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26
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Construction of minitype glutamate sensor for in vivo monitoring of L-glutamate in plant. Microchem J 2023. [DOI: 10.1016/j.microc.2023.108505] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/07/2023]
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27
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New Insight into Short Time Exogenous Formaldehyde Application Mediated Changes in Chlorophytum comosum L. (Spider Plant) Cellular Metabolism. Cells 2023; 12:cells12020232. [PMID: 36672168 PMCID: PMC9857029 DOI: 10.3390/cells12020232] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/14/2022] [Revised: 12/24/2022] [Accepted: 12/28/2022] [Indexed: 01/09/2023] Open
Abstract
Chlorophytum comosum L. plants are known to effectively absorb air pollutants, including formaldehyde (HCHO). Since the metabolic and defense responses of C. comosum to HCHO are poorly understood, in the present study, biochemical changes in C. comosum leaves induced by 48 h exposure to exogenous HCHO, applied as 20 mg m-3, were analyzed. The observed changes showed that HCHO treatment caused no visible harmful effects on C. comosum leaves and seemed to be effectively metabolized by this plant. HCHO application caused no changes in total chlorophyll (Chl) and Chl a content, increased Chl a/b ratio, and decreased Chl b and carotenoid content. HCHO treatment affected sugar metabolism, towards the utilization of sucrose and synthesis or accumulation of glucose, and decreased activities of aspartate and alanine aminotransferases, suggesting that these enzymes do not play any pivotal role in amino acid transformations during HCHO assimilation. The total phenolic content in leaf tissues did not change in comparison to the untreated plants. The obtained results suggest that HCHO affects nitrogen and carbohydrate metabolism, effectively influencing photosynthesis, shortly after plant exposure to this volatile compound. It may be suggested that the observed changes are related to early HCHO stress symptoms or an early step of the adaptation of cells to HCHO treatment. The presented results confirm for the first time the direct influence of short time HCHO exposure on the studied parameters in the C. comosum plant leaf tissues.
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28
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Zhang C, Li M, Rauf A, Khalil AA, Shan Z, Chen C, Rengasamy KRR, Wan C. Process and applications of alginate oligosaccharides with emphasis on health beneficial perspectives. Crit Rev Food Sci Nutr 2023; 63:303-329. [PMID: 34254536 DOI: 10.1080/10408398.2021.1946008] [Citation(s) in RCA: 11] [Impact Index Per Article: 11.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/07/2023]
Abstract
Alginates are linear polymers comprising 40% of the dry weight of algae possess various applications in food and biomedical industries. Alginate oligosaccharides (AOS), a degradation product of alginate, is now gaining much attention for their beneficial role in food, pharmaceutical and agricultural industries. Hence this review was aimed to compile the information on alginate and AOS (prepared from seaweeds) during 1994-2020. As per our knowledge, this is the first review on the potential use of alginate oligosaccharides in different fields. The alginate derivatives are grouped according to their applications. They are involved in the isolation process and show antimicrobial, antioxidant, anti-inflammatory, antihypertension, anticancer, and immunostimulatory properties. AOS also have significant applications in prebiotics, nutritional supplements, plant growth development and others products.
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Affiliation(s)
- Chunhua Zhang
- College of Agriculture and Forestry, Pu'er University, Pu'er, Yunnan, China
| | - Mingxi Li
- Research Center of Tea and Tea Culture, College of Agronomy, Jiangxi Agricultural University, Nanchang, Jiangxi, China
| | - Abdur Rauf
- Department of Chemistry, University of Swabi, Khyber Pakhtunkhwa (KP), Pakistan
| | - Anees Ahmed Khalil
- University Institute of Diet and Nutritional Sciences, Faculty of Diet and Nutritional Sciences, The University of Lahore, Lahore, Pakistan
| | - Zhiguo Shan
- College of Agriculture and Forestry, Pu'er University, Pu'er, Yunnan, China
| | - Chuying Chen
- Research Center of Tea and Tea Culture, College of Agronomy, Jiangxi Agricultural University, Nanchang, Jiangxi, China
| | - Kannan R R Rengasamy
- Green Biotechnologies Research Centre of Excellence, University of Limpopo, Polokwane, Sovenga, South Africa
| | - Chunpeng Wan
- Research Center of Tea and Tea Culture, College of Agronomy, Jiangxi Agricultural University, Nanchang, Jiangxi, China
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29
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Wang Y, Liu Y, Qu S, Liang W, Sun L, Ci D, Ren Z, Fan LM, Qian W. Nitrogen starvation induces genome-wide activation of transposable elements in Arabidopsis. JOURNAL OF INTEGRATIVE PLANT BIOLOGY 2022; 64:2374-2384. [PMID: 36178606 DOI: 10.1111/jipb.13376] [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: 06/30/2022] [Accepted: 09/30/2022] [Indexed: 06/16/2023]
Abstract
Nitrogen (N) availability is a major limiting factor for plant growth and agricultural productivity. Although the gene regulation network in response to N starvation has been extensively studied, it remains unknown whether N starvation has an impact on the activity of transposable elements (TEs). Here, we report that TEs can be transcriptionally activated in Arabidopsis under N starvation conditions. Through genetic screening of idm1-14 suppressors, we cloned GLU1, which encodes a glutamate synthase that catalyzes the synthesis of glutamate in the primary N assimilation pathway. We found that glutamate synthase 1 (GLU1) and its functional homologs GLU2 and glutamate transport 1 (GLT1) are redundantly required for TE silencing, suggesting that N metabolism can regulate TE activity. Transcriptome and methylome analyses revealed that N starvation results in genome-wide TE activation without inducing obvious alteration of DNA methylation. Genetic analysis indicated that N starvation-induced TE activation is also independent of other well-established epigenetic mechanisms, including histone methylation and heterochromatin decondensation. Our results provide new insights into the regulation of TE activity under stressful environments in planta.
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Affiliation(s)
- Yue Wang
- State Key Laboratory of Protein and Plant Gene Research, School of Advanced Agricultural Sciences, Peking University, Beijing, 100871, China
- School of Life Sciences, Peking University, Beijing, 100871, China
| | - Yi Liu
- School of Life Sciences, Peking University, Beijing, 100871, China
| | - Shaofeng Qu
- State Key Laboratory of Protein and Plant Gene Research, School of Advanced Agricultural Sciences, Peking University, Beijing, 100871, China
| | - Wenjie Liang
- School of Life Sciences, Peking University, Beijing, 100871, China
| | - Linhua Sun
- State Key Laboratory of Protein and Plant Gene Research, School of Advanced Agricultural Sciences, Peking University, Beijing, 100871, China
| | - Dong Ci
- Peking University Institute of Advanced Agricultural Sciences, Weifang, 261000, China
| | - Zhitong Ren
- State Key Laboratory of Protein and Plant Gene Research, School of Advanced Agricultural Sciences, Peking University, Beijing, 100871, China
| | - Liu-Min Fan
- School of Life Sciences, Peking University, Beijing, 100871, China
| | - Weiqiang Qian
- State Key Laboratory of Protein and Plant Gene Research, School of Advanced Agricultural Sciences, Peking University, Beijing, 100871, China
- Peking University Institute of Advanced Agricultural Sciences, Weifang, 261000, China
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30
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Xing J, Cao X, Zhang M, Wei X, Zhang J, Wan X. Plant nitrogen availability and crosstalk with phytohormones signallings and their biotechnology breeding application in crops. PLANT BIOTECHNOLOGY JOURNAL 2022. [PMID: 36435985 DOI: 10.1111/pbi.13971] [Citation(s) in RCA: 10] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/13/2022] [Revised: 10/27/2022] [Accepted: 11/20/2022] [Indexed: 06/16/2023]
Abstract
Nitrogen (N), one of the most important nutrients, limits plant growth and crop yields in sustainable agriculture system, in which phytohormones are known to play essential roles in N availability. Hence, it is not surprising that massive studies about the crosstalk between N and phytohormones have been constantly emerging. In this review, with the intellectual landscape of N and phytohormones crosstalk provided by the bibliometric analysis, we trace the research story of best-known crosstalk between N and various phytohormones over the last 20 years. Then, we discuss how N regulates various phytohormones biosynthesis and transport in plants. In reverse, we also summarize how phytohormones signallings modulate root system architecture (RSA) in response to N availability. Besides, we expand to outline how phytohormones signallings regulate uptake, transport, and assimilation of N in plants. Further, we conclude advanced biotechnology strategies, explain their application, and provide potential phytohormones-regulated N use efficiency (NUE) targets in crops. Collectively, this review provides not only a better understanding on the recent progress of crosstalk between N and phytohormones, but also targeted strategies for improvement of NUE to increase crop yields in future biotechnology breeding of crops.
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Affiliation(s)
- Jiapeng Xing
- Research Center of Biology and Agriculture, Shunde Innovation School, School of Chemistry and Biological Engineering, University of Science and Technology Beijing (USTB), Beijing, China
- Beijing Engineering Laboratory of Main Crop Bio-Tech Breeding, Beijing International Science and Technology Cooperation Base of Bio-Tech Breeding, Zhongzhi International Institute of Agricultural Biosciences, Beijing, China
| | - Xiaocong Cao
- Research Center of Biology and Agriculture, Shunde Innovation School, School of Chemistry and Biological Engineering, University of Science and Technology Beijing (USTB), Beijing, China
- Beijing Engineering Laboratory of Main Crop Bio-Tech Breeding, Beijing International Science and Technology Cooperation Base of Bio-Tech Breeding, Zhongzhi International Institute of Agricultural Biosciences, Beijing, China
| | - Mingcai Zhang
- State Key Laboratory of Plant Physiology and Biochemistry, College of Agronomy and Biotechnology, China Agricultural University, Beijing, China
| | - Xun Wei
- Research Center of Biology and Agriculture, Shunde Innovation School, School of Chemistry and Biological Engineering, University of Science and Technology Beijing (USTB), Beijing, China
- Beijing Engineering Laboratory of Main Crop Bio-Tech Breeding, Beijing International Science and Technology Cooperation Base of Bio-Tech Breeding, Zhongzhi International Institute of Agricultural Biosciences, Beijing, China
| | - Juan Zhang
- Research Center of Biology and Agriculture, Shunde Innovation School, School of Chemistry and Biological Engineering, University of Science and Technology Beijing (USTB), Beijing, China
- Beijing Engineering Laboratory of Main Crop Bio-Tech Breeding, Beijing International Science and Technology Cooperation Base of Bio-Tech Breeding, Zhongzhi International Institute of Agricultural Biosciences, Beijing, China
| | - Xiangyuan Wan
- Research Center of Biology and Agriculture, Shunde Innovation School, School of Chemistry and Biological Engineering, University of Science and Technology Beijing (USTB), Beijing, China
- Beijing Engineering Laboratory of Main Crop Bio-Tech Breeding, Beijing International Science and Technology Cooperation Base of Bio-Tech Breeding, Zhongzhi International Institute of Agricultural Biosciences, Beijing, China
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31
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Glutamine Synthetase Contributes to the Regulation of Growth, Conidiation, Sclerotia Development, and Resistance to Oxidative Stress in the Fungus Aspergillus flavus. Toxins (Basel) 2022; 14:toxins14120822. [PMID: 36548719 PMCID: PMC9785230 DOI: 10.3390/toxins14120822] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/25/2022] [Revised: 11/12/2022] [Accepted: 11/21/2022] [Indexed: 11/27/2022] Open
Abstract
The basic biological function of glutamine synthetase (Gs) is to catalyze the conversion of ammonium and glutamate to glutamine. This synthetase also performs other biological functions. However, the roles of Gs in fungi, especially in filamentous fungi, are not fully understood. Here, we found that conditional disruption of glutamine synthetase (AflGsA) gene expression in Aspergillus flavus by using a xylose promoter leads to a complete glutamine deficiency. Supplementation of glutamine could restore the nutritional deficiency caused by AflGsA expression deficiency. Additionally, by using the xylose promoter for the downregulation of AflgsA expression, we found that AflGsA regulates spore and sclerotic development by regulating the transcriptional levels of sporulation genes abaA and brlA and the sclerotic generation genes nsdC and nsdD, respectively. In addition, AflGsA was found to maintain the balance of reactive oxygen species (ROS) and to aid in resisting oxidative stress. AflGsA is also involved in the regulation of light signals through the production of glutamine. The results also showed that the recombinant AflGsA had glutamine synthetase activity in vitro and required the assistance of metal ions. The inhibitor molecule L-α-aminoadipic acid suppressed the activity of rAflGsA in vitro and disrupted the morphogenesis of spores, sclerotia, and colonies in A. flavus. These results provide a mechanistic link between nutrition metabolism and glutamine synthetase in A. flavus and suggest a strategy for the prevention of fungal infection.
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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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Cui X, He H, Hu S, Zhang B, Cai H. Synergistic Interaction between Copper and Nitrogen-Uptake, Translocation, and Distribution in Rice Plant. PLANTS (BASEL, SWITZERLAND) 2022; 11:2612. [PMID: 36235478 PMCID: PMC9572941 DOI: 10.3390/plants11192612] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 09/13/2022] [Revised: 09/28/2022] [Accepted: 09/29/2022] [Indexed: 06/16/2023]
Abstract
Interactions among nutrients have been widely recognized in plants and play important roles in crop growth and yield formation. However, the interplay of Cu and N in rice plants is not yet clear. In this study, rice plants were grown with different combinations of Cu and N supply. The effects of Cu-N interaction on the growth, yield production, Cu and N transport, and gene expression levels were analyzed. The results showed that the effect of N supply on rice growth and yield formation was more pronounced than that of Cu supply. The Cu supply significantly improved the uptake of N (by 9.52-30.64%), while the N supply significantly promoted the root-to-shoot translocation of Cu (by 27.28-38.45%) and distributed more Cu (1.85-19.16%) into the shoots and leaves. The results of qRT-PCR showed that +Cu significantly up-regulated the expression levels of both NO3- and NH4+ transporter genes OsNRTs and OsAMTs, including OsNRT1.1B, OsNRT2.1, OsNRT2.3a, OsNRT2.4, OsAMT1.2, OsAMT1.3, and OsAMT3.1. Meanwhile, +N significantly up-regulated the expression levels of Cu transporter genes OsHMA5 and OsYSL16. In addition, the supply of Cu up-regulated the expression levels of OsGS1;2, OsGS2, and OsNADH-GOGAT to 12.61-, 6.48-, and 6.05-fold, respectively. In conclusion, our study demonstrates a synergistic effect between Cu and N in rice plants. It is expected that our results would be helpful to optimize the application of N and Cu fertilizers in agriculture.
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Affiliation(s)
- Xinlong Cui
- Microelement Research Center, Huazhong Agricultural University, Wuhan 430070, China
- College of Resources and Environment, Huazhong Agricultural University, Wuhan 430070, China
| | - Hua He
- College of Resources and Environment, Huazhong Agricultural University, Wuhan 430070, China
| | - Shengwang Hu
- College of Resources and Environment, Huazhong Agricultural University, Wuhan 430070, China
| | - Banfa Zhang
- College of Resources and Environment, Huazhong Agricultural University, Wuhan 430070, China
| | - Hongmei Cai
- Microelement Research Center, Huazhong Agricultural University, Wuhan 430070, China
- College of Resources and Environment, Huazhong Agricultural University, Wuhan 430070, China
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Sun C, Sun N, Ou Y, Gong B, Jin C, Shi Q, Lin X. Phytomelatonin and plant mineral nutrition. JOURNAL OF EXPERIMENTAL BOTANY 2022; 73:5903-5917. [PMID: 35767844 DOI: 10.1093/jxb/erac289] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/19/2022] [Accepted: 06/29/2022] [Indexed: 05/27/2023]
Abstract
Plant mineral nutrition is critical for agricultural productivity and for human nutrition; however, the availability of mineral elements is spatially and temporally heterogeneous in many ecosystems and agricultural landscapes. Nutrient imbalances trigger intricate signalling networks that modulate plant acclimation responses. One signalling agent of particular importance in such networks is phytomelatonin, a pleiotropic molecule with multiple functions. Evidence indicates that deficiencies or excesses of nutrients generally increase phytomelatonin levels in certain tissues, and it is increasingly thought to participate in the regulation of plant mineral nutrition. Alterations in endogenous phytomelatonin levels can protect plants from oxidative stress, influence root architecture, and influence nutrient uptake and efficiency of use through transcriptional and post-transcriptional regulation; such changes optimize mineral nutrient acquisition and ion homeostasis inside plant cells and thereby help to promote growth. This review summarizes current knowledge on the regulation of plant mineral nutrition by melatonin and highlights how endogenous phytomelatonin alters plant responses to specific mineral elements. In addition, we comprehensively discuss how melatonin influences uptake and transport under conditions of nutrient shortage.
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Affiliation(s)
- Chengliang Sun
- MOE Key Laboratory of Environment Remediation and Ecological Health, College of Environmental & Resource Sciences, Zhejiang University, Hangzhou, PR China
| | - Nan Sun
- MOE Key Laboratory of Environment Remediation and Ecological Health, College of Environmental & Resource Sciences, Zhejiang University, Hangzhou, PR China
| | - Yiqun Ou
- MOE Key Laboratory of Environment Remediation and Ecological Health, College of Environmental & Resource Sciences, Zhejiang University, Hangzhou, PR China
| | - Biao Gong
- College of Horticulture Science and Engineering, Shandong Agricultural University, Taian, PR China
| | - Chongwei Jin
- MOE Key Laboratory of Environment Remediation and Ecological Health, College of Environmental & Resource Sciences, Zhejiang University, Hangzhou, PR China
| | - Qinghua Shi
- College of Horticulture Science and Engineering, Shandong Agricultural University, Taian, PR China
| | - Xianyong Lin
- MOE Key Laboratory of Environment Remediation and Ecological Health, College of Environmental & Resource Sciences, Zhejiang University, Hangzhou, PR China
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Sakuraba Y. Molecular basis of nitrogen starvation-induced leaf senescence. FRONTIERS IN PLANT SCIENCE 2022; 13:1013304. [PMID: 36212285 PMCID: PMC9538721 DOI: 10.3389/fpls.2022.1013304] [Citation(s) in RCA: 9] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/06/2022] [Accepted: 09/08/2022] [Indexed: 06/01/2023]
Abstract
Nitrogen (N), a macronutrient, is often a limiting factor in plant growth, development, and productivity. To adapt to N-deficient environments, plants have developed elaborate N starvation responses. Under N-deficient conditions, older leaves exhibit yellowing, owing to the degradation of proteins and chlorophyll pigments in chloroplasts and subsequent N remobilization from older leaves to younger leaves and developing organs to sustain plant growth and productivity. In recent years, numerous studies have been conducted on N starvation-induced leaf senescence as one of the representative plant responses to N deficiency, revealing that leaf senescence induced by N deficiency is highly complex and intricately regulated at different levels, including transcriptional, post-transcriptional, post-translational and metabolic levels, by multiple genes and proteins. This review summarizes the current knowledge of the molecular mechanisms associated with N starvation-induced leaf senescence.
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Adu BG, Argete AYS, Egawa S, Nagano AJ, Shimizu A, Ohmori Y, Fujiwara T. A Koshihikari X Oryza rufipogon Introgression Line with a High Capacity to Take up Nitrogen to Maintain Growth and Panicle Development under Low Nitrogen Conditions. PLANT & CELL PHYSIOLOGY 2022; 63:1215-1229. [PMID: 35791818 DOI: 10.1093/pcp/pcac097] [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: 03/21/2022] [Revised: 06/15/2022] [Accepted: 07/05/2022] [Indexed: 06/15/2023]
Abstract
Nitrogen (N) is an important macronutrient for plant growth and development. Currently, N fertilizers are required for the efficient production of modern crops such as rice due to their limited capacity to take up N when present at low concentrations. Wild rice represents a useful genetic resource for improving crop responses to low nutrient stress. Here, we describe the isolation and characterization of an introgression line, KRIL37, that carries a small region of the Oryza rufipogon genome in the Oryza sativa L. cv Koshihikari (KH) background. This line was found to grow better under low N conditions and have similar or lower C/N ratios in aerial portions compared to those in the parental KH cultivar, suggesting that KRIL37 has a higher capacity to take up and assimilate N when present at low concentrations. KRIL37 performance in the field was also better than that of KH cultivated without N and fertilizer (-F). Transcriptome analyses of 3-week-old seedlings based on RNA-sequencing revealed that KH induced a wider suite of genes than the tolerant line KRIL37 in response to low N conditions. Some ammonium transporters and N assimilation genes were found to be induced under low N in KRIL37, but not in KH. Our findings suggest that the superior growth performance of KRIL37 under limited N conditions could be due to the expression of wild alleles influencing N uptake and assimilation. Our study demonstrates the potential to use wild rice genomes to improve modern crops for low nutrient tolerance.
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Affiliation(s)
- Bright G Adu
- Department of Applied Biological Chemistry, Graduate School of Agricultural and Life Sciences, The University of Tokyo, Yayoi, Bunkyo-ku, Tokyo, 113-8657 Japan
| | - Aizelle Y S Argete
- Department of Applied Biological Chemistry, Graduate School of Agricultural and Life Sciences, The University of Tokyo, Yayoi, Bunkyo-ku, Tokyo, 113-8657 Japan
| | - Sakiko Egawa
- Department of Applied Biological Chemistry, Graduate School of Agricultural and Life Sciences, The University of Tokyo, Yayoi, Bunkyo-ku, Tokyo, 113-8657 Japan
| | - Atsushi J Nagano
- Faculty of Agriculture, Ryukoku University, Otsu, 520-2194, Japan
- Institute of Advanced Biosciences, Keio University, Tsuruoka, 997-0017, Japan
| | - Akifumi Shimizu
- School of Environmental Science, The University of Shiga Prefecture, Hassaka-cho, Hikone-City, Shiga 522-8533 Japan
| | - Yoshihiro Ohmori
- Agricultural Bioinformatics Research Unit, Graduate School of Agricultural and Life Sciences, The University of Tokyo, Yayoi, Bunkyo-ku, Tokyo, 113-8657 Japan
| | - Toru Fujiwara
- Department of Applied Biological Chemistry, Graduate School of Agricultural and Life Sciences, The University of Tokyo, Yayoi, Bunkyo-ku, Tokyo, 113-8657 Japan
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37
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Comparative effects of nitrogen, phosphorus and potassium on Radopholus similis infection in East African highland banana plants as influenced by rhizosphere biota. SCIENTIFIC AFRICAN 2022. [DOI: 10.1016/j.sciaf.2022.e01320] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022] Open
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38
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Lee KT, Chung YH, Hsieh MH. The Arabidopsis glutamine synthetase2 mutants (gln2-1 and gln2-2) do not have abnormal phenotypes. PLANT PHYSIOLOGY 2022; 189:1906-1910. [PMID: 35567491 PMCID: PMC9342959 DOI: 10.1093/plphys/kiac224] [Citation(s) in RCA: 4] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/22/2022] [Accepted: 04/25/2022] [Indexed: 05/16/2023]
Abstract
The Arabidopsis glutamine synthetase2 mutants grow normally in the air, challenging the paradigm that chloroplastic GLUTAMINE SYNTHETASE2 is the primary enzyme to assimilate photorespiratory NH4+.
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Affiliation(s)
- Kim-Teng Lee
- Institute of Plant and Microbial Biology, Academia Sinica, Taipei 11529, Taiwan
- Molecular and Biological Agricultural Sciences, Taiwan International Graduate Program, Academia Sinica, Taipei 11529, Taiwan
| | - Yi-Hsin Chung
- Institute of Plant and Microbial Biology, Academia Sinica, Taipei 11529, Taiwan
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Hajheidari M, Gerlach N, Dorau K, Omidbakhshfard MA, Pesch L, Hofmann J, Hallab A, Ponce-Soto GY, Kuhalskaya A, Medeiros DB, Bourceret A, Usadel B, Mayer J, Fernie A, Mansfeldt T, Sonnewald U, Bucher M. Crop genetic diversity uncovers metabolites, elements, and gene networks predicted to be associated with high plant biomass yields in maize. PNAS NEXUS 2022; 1:pgac068. [PMID: 36741443 PMCID: PMC9896949 DOI: 10.1093/pnasnexus/pgac068] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 01/15/2022] [Accepted: 06/29/2022] [Indexed: 02/07/2023]
Abstract
Rapid population growth and increasing demand for food, feed, and bioenergy in these times of unprecedented climate change require breeding for increased biomass production on the world's croplands. To accelerate breeding programs, knowledge of the relationship between biomass features and underlying gene networks is needed to guide future breeding efforts. To this end, large-scale multiomics datasets were created with genetically diverse maize lines, all grown in long-term organic and conventional cropping systems. Analysis of the datasets, integrated using regression modeling and network analysis revealed key metabolites, elements, gene transcripts, and gene networks, whose contents during vegetative growth substantially influence the build-up of plant biomass in the reproductive phase. We found that S and P content in the source leaf and P content in the root during the vegetative stage contributed the most to predicting plant performance at the reproductive stage. In agreement with the Gene Ontology enrichment analysis, the cis-motifs and identified transcription factors associated with upregulated genes under phosphate deficiency showed great diversity in the molecular response to phosphate deficiency in selected lines. Furthermore, our data demonstrate that genotype-dependent uptake, assimilation, and allocation of essential nutrient elements (especially C and N) during vegetative growth under phosphate starvation plays an important role in determining plant biomass by controlling root traits related to nutrient uptake. These integrative multiomics results revealed key factors underlying maize productivity and open new opportunities for efficient, rapid, and cost-effective plant breeding to increase biomass yield of the cereal crop maize under adverse environmental factors.
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Affiliation(s)
| | - Nina Gerlach
- Institute for Plant Sciences, Cologne Biocenter, Cluster of Excellence on Plant Sciences, University of Cologne, D-50674 Cologne, Germany
| | - Kristof Dorau
- Faculty of Mathematics and Natural Sciences, Department of Geosciences, Institute of Geography, University of Cologne, Albertus‐Magnus‐Platz, D‐50923 Köln, Germany
| | - M Amin Omidbakhshfard
- Max Planck Institute of Molecular Plant Physiology, Department of Molecular Physiology, D-14476 Potsdam-Golm, Germany
| | - Lina Pesch
- Institute for Plant Sciences, Cologne Biocenter, Cluster of Excellence on Plant Sciences, University of Cologne, D-50674 Cologne, Germany
| | - Jörg Hofmann
- Division of Biochemistry, Department of Biology, Friedrich-Alexander-University Erlangen-Nürnberg, D-91054 Erlangen, Germany
| | - Asis Hallab
- Bioinformatics (IBG‐4), Forschungszentrum Jülich GmbH, D‐52425 Jülich, Germany
| | | | - Anastasiya Kuhalskaya
- Max Planck Institute of Molecular Plant Physiology, Department of Molecular Physiology, D-14476 Potsdam-Golm, Germany
| | - David B Medeiros
- Max Planck Institute of Molecular Plant Physiology, Department of Molecular Physiology, D-14476 Potsdam-Golm, Germany
| | | | | | - Björn Usadel
- Bioinformatics (IBG‐4), Forschungszentrum Jülich GmbH, D‐52425 Jülich, Germany,HHU Düsseldorf, Institute of Biological Data Science, Cluster of Excellence on Plant Sciences, D-40225 Düsseldorf, Germany
| | - Jochen Mayer
- Agroscope, Department of Agroecology and Environment, CH-8046 Zurich, Switzerland
| | - Alisdair Fernie
- Max Planck Institute of Molecular Plant Physiology, Department of Molecular Physiology, D-14476 Potsdam-Golm, Germany
| | - Tim Mansfeldt
- Faculty of Mathematics and Natural Sciences, Department of Geosciences, Institute of Geography, University of Cologne, Albertus‐Magnus‐Platz, D‐50923 Köln, Germany
| | - Uwe Sonnewald
- Division of Biochemistry, Department of Biology, Friedrich-Alexander-University Erlangen-Nürnberg, D-91054 Erlangen, Germany
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Wang M, Gong S, Fu L, Hu G, Li G, Hu S, Yang J. The Involvement of Antioxidant Enzyme System, Nitrogen Metabolism and Osmoregulatory Substances in Alleviating Salt Stress in Inbred Maize Lines and Hormone Regulation Mechanisms. PLANTS 2022; 11:plants11121547. [PMID: 35736698 PMCID: PMC9227288 DOI: 10.3390/plants11121547] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 05/07/2022] [Revised: 06/06/2022] [Accepted: 06/08/2022] [Indexed: 11/16/2022]
Abstract
Salt stress inhibited the growth of maize. B46 and NC236 were chosen as materials and NaCl concentrations (0, 55, 110, 165, and 220 mmol L−1) were set. We found the activities of SOD, POD, CAT, APX, GR, MDHAR, and DHAR decreased under NaCl stress. Compared with NC236, the contents of AsA and GSH, AsA/DHA and GSH/GSSG of B46 decreased. The content of O2−, H2O2, MDA, and EL of B46 increased. The contents of NO3− and NO2− decreased, while the content of NH4+ increased under high NaCl concentration. The activities of NR and NiR decreased, while the activities of GS and GOGAT increased first and then decreased. For B46 and NC236, the maximum of NADH-GDH and NAD-GDH appeared at 165 and 110 mmol L−1 NaCl concentration, respectively. Compared with B46, and the GOT and GPT activities of NC236 increased first and then decreased. With the increase of NaCl concentration, the contents of proline, soluble protein, and soluble sugar were increased. The Na+ content of B46 and NC236 increased, and the K+ content and K+/Na+ decreased. Compared with NC236, B46 had higher IAA content in leaf, higher Z + ZR content in leaf and root, and lower ABA content in leaf and root.
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Luo L, Zhu M, Jia L, Xie Y, Wang Z, Xuan W. Ammonium transporters cooperatively regulate rice crown root formation responding to ammonium nitrogen. JOURNAL OF EXPERIMENTAL BOTANY 2022; 73:3671-3685. [PMID: 35176162 DOI: 10.1093/jxb/erac059] [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: 06/14/2021] [Accepted: 02/16/2022] [Indexed: 06/14/2023]
Abstract
Crown roots (CRs) are major components of the rice root system. They form at the basal node of the shoot, and their development is greatly influenced by environmental factors. Ammonium nitrogen is known to impact plant root development through ammonium transporters (AMTs), but it remains unclear whether ammonium and AMTs play roles in rice CR formation. In this study, we revealed a significant role of ammonium, rather than nitrate, in regulating rice CR development. High ammonium supply increases CR formation but inhibits CR elongation. Genetic evidence showed that ammonium regulation of CR development relies on ammonium uptake mediated jointly by ammonium transporters OsAMT1;1, OsAMT1;2; OsAMT1;3, and OsAMT2;1, but not on root acidification which was the result of ammonium uptake. OsAMTs are also needed for glutamine-induced CR formation. Furthermore, we showed that polar auxin transport dependent on the PIN auxin efflux carriers acts downstream of ammonium uptake and assimilation to activate local auxin signaling at CR primordia, in turn promoting CR formation. Taken together, our results highlight a critical role for OsAMTs in cooperatively regulating CR formation through regulating auxin transport under nitrogen-rich conditions.
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Affiliation(s)
- Long Luo
- MOA Key Laboratory of Plant Nutrition and Fertilization in Lower-Middle Reaches of the Yangtze River and State Key Laboratory of Crop Genetics and Germplasm Enhancement, Nanjing Agricultural University, Nanjing 210095, China
| | - Ming Zhu
- MOA Key Laboratory of Plant Nutrition and Fertilization in Lower-Middle Reaches of the Yangtze River and State Key Laboratory of Crop Genetics and Germplasm Enhancement, Nanjing Agricultural University, Nanjing 210095, China
| | - Letian Jia
- MOA Key Laboratory of Plant Nutrition and Fertilization in Lower-Middle Reaches of the Yangtze River and State Key Laboratory of Crop Genetics and Germplasm Enhancement, Nanjing Agricultural University, Nanjing 210095, China
| | - Yuanming Xie
- MOA Key Laboratory of Plant Nutrition and Fertilization in Lower-Middle Reaches of the Yangtze River and State Key Laboratory of Crop Genetics and Germplasm Enhancement, Nanjing Agricultural University, Nanjing 210095, China
| | - Ziniu Wang
- MOA Key Laboratory of Plant Nutrition and Fertilization in Lower-Middle Reaches of the Yangtze River and State Key Laboratory of Crop Genetics and Germplasm Enhancement, Nanjing Agricultural University, Nanjing 210095, China
| | - Wei Xuan
- MOA Key Laboratory of Plant Nutrition and Fertilization in Lower-Middle Reaches of the Yangtze River and State Key Laboratory of Crop Genetics and Germplasm Enhancement, Nanjing Agricultural University, Nanjing 210095, China
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Marino D, Cañas RA, Betti M. Is plastidic glutamine synthetase essential for C 3 plants? A tale of photorespiratory mutants, ammonium tolerance and conifers. THE NEW PHYTOLOGIST 2022; 234:1559-1565. [PMID: 35279841 PMCID: PMC9314894 DOI: 10.1111/nph.18090] [Citation(s) in RCA: 8] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/21/2021] [Accepted: 02/23/2022] [Indexed: 05/19/2023]
Abstract
Agriculture faces the considerable challenge of having to adapt to a progressively changing climate (including the increase in CO2 levels and temperatures); environmental impact must be reduced while at the same time crop yields need to be maintained or increased to ensure food security. Under this scenario, increasing plants' nitrogen (N) use efficiency and minimizing the energy losses associated with photorespiration are two goals of crop breeding that are long sought after. The plastidic glutamine synthetase (GS2) enzyme stands at the crossroads of N assimilation and photorespiration, and is therefore a key candidate for the improvement of crop performance. The GS2 enzyme has long been considered essential for angiosperm survival under photorespiratory conditions. Surprisingly, in Arabidopsis GS2 is not essential for plant survival, and its absence confers tolerance towards ammonium stress, which is in conflict with the idea that NH4+ accumulation is one of the main causes of ammonium stress. Altogether, it appears that the 'textbook' view of this enzyme must be revisited, especially regarding the degree to which it is essential for plant growth under photorespiratory conditions, and the role of NH4+ assimilation during ammonium stress. In this article we open the debate on whether more or less GS2 is a desirable trait for plant productivity.
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Affiliation(s)
- Daniel Marino
- Department of Plant Biology and EcologyUniversity of the Basque Country (UPV/EHU)E‐48940LeioaSpain
- IkerbasqueBasque Foundation for ScienceE‐48011BilbaoSpain
| | - Rafael A. Cañas
- Integrative Molecular Biology LabUniversidad de MálagaCampus Universitario de Teatinos29071MálagaSpain
| | - Marco Betti
- Departamento de Bioquímica Vegetal y Biología Molecular, Facultad de QuímicaUniversidad de Sevilla41012SevillaSpain
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Geem KR, Kim J, Bae W, Jee MG, Yu J, Jang I, Lee DY, Hong CP, Shim D, Ryu H. Nitrate enhances the secondary growth of storage roots in Panax ginseng. J Ginseng Res 2022; 47:469-478. [DOI: 10.1016/j.jgr.2022.05.009] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/07/2022] [Revised: 05/13/2022] [Accepted: 05/23/2022] [Indexed: 10/18/2022] Open
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Alors D, Amses KR, James TY, Boussiba S, Zarka A. Paraphysoderma sedebokerense GlnS III Is Essential for the Infection of Its Host Haematococcus lacustris. J Fungi (Basel) 2022; 8:561. [PMID: 35736044 PMCID: PMC9224648 DOI: 10.3390/jof8060561] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/01/2022] [Revised: 05/11/2022] [Accepted: 05/14/2022] [Indexed: 02/05/2023] Open
Abstract
Glutamine synthetase (GlnS) is a key enzyme in nitrogen metabolism. We investigated the effect of the GlnS inhibitor glufosinate on the infection of H. lacustris by the blastocladialean fungus P. sedebokerense, assuming that interfering with the host nitrogen metabolism will affect the success of the parasite. Complete inhibition of infection, which could be bypassed by the GlnS product glutamine, was observed at millimolar concentrations of glufosinate. However, this effect of glufosinate was attributed to its direct interaction with the blastoclad and not the host, which results in development and growth inhibition of the blastoclad. In our P. sedebokerense draft genome, we found that the sequence of GlnS is related to another fungal GlnS, type III, found in many poor known phyla of fungi, including Blastocladiomycota and Chytridiomycota, and absent in the main subkingdom of fungi, the Dikarya. We further tested the ability of the blastoclad to utilize nitrate and ammonia as inorganic nitrogen sources and glutamine for growth. We found that P. sedebokerense equally use ammonia and glutamine and use also nitrate, but with less efficiency. Altogether, our results show that GlnS type III is mandatory for the development and growth of P. sedebokerense and could be an efficient target to develop strategies for the control of the fungal parasite of H. lacustris.
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Affiliation(s)
- David Alors
- Microalgal Biotechnology Laboratory, French Associates Institute for Agriculture and Biotechnology of Drylands, The Jacob Blaustein Institutes for Desert Research, Sede-Boker Campus Ben Gurion University of the Negev, Beersheba 8499000, Israel;
- Departamento de Biología y Químicas, Facultad de Recursos Naturales, Campus San Juan Pablo II, Universidad Católica de Temuco, Temuco 478 0694, Chile
| | - Kevin R. Amses
- Department of Ecology and Evolutionary Biology, University of Michigan, Ann Arbor, MI 48109, USA; (K.R.A.); (T.Y.J.)
| | - Timothy Y. James
- Department of Ecology and Evolutionary Biology, University of Michigan, Ann Arbor, MI 48109, USA; (K.R.A.); (T.Y.J.)
| | - Sammy Boussiba
- Microalgal Biotechnology Laboratory, French Associates Institute for Agriculture and Biotechnology of Drylands, The Jacob Blaustein Institutes for Desert Research, Sede-Boker Campus Ben Gurion University of the Negev, Beersheba 8499000, Israel;
| | - Aliza Zarka
- Microalgal Biotechnology Laboratory, French Associates Institute for Agriculture and Biotechnology of Drylands, The Jacob Blaustein Institutes for Desert Research, Sede-Boker Campus Ben Gurion University of the Negev, Beersheba 8499000, Israel;
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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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Shrestha V, Chhetri HB, Kainer D, Xu Y, Hamilton L, Piasecki C, Wolfe B, Wang X, Saha M, Jacobson D, Millwood RJ, Mazarei M, Stewart CN. The Genetic Architecture of Nitrogen Use Efficiency in Switchgrass ( Panicum virgatum L.). FRONTIERS IN PLANT SCIENCE 2022; 13:893610. [PMID: 35586220 PMCID: PMC9108870 DOI: 10.3389/fpls.2022.893610] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 03/10/2022] [Accepted: 04/01/2022] [Indexed: 06/15/2023]
Abstract
Switchgrass (Panicum virgatum L.) has immense potential as a bioenergy crop with the aim of producing biofuel as an end goal. Nitrogen (N)-related sustainability traits, such as nitrogen use efficiency (NUE) and nitrogen remobilization efficiency (NRE), are important factors affecting switchgrass quality and productivity. Hence, it is imperative to develop nitrogen use-efficient switchgrass accessions by exploring the genetic basis of NUE in switchgrass. For that, we used 331 diverse field-grown switchgrass accessions planted under low and moderate N fertility treatments. We performed a genome wide association study (GWAS) in a holistic manner where we not only considered NUE as a single trait but also used its related phenotypic traits, such as total dry biomass at low N and moderate N, and nitrogen use index, such as NRE. We have evaluated the phenotypic characterization of the NUE and the related traits, highlighted their relationship using correlation analysis, and identified the top ten nitrogen use-efficient switchgrass accessions. Our GWAS analysis identified 19 unique single nucleotide polymorphisms (SNPs) and 32 candidate genes. Two promising GWAS candidate genes, caffeoyl-CoA O-methyltransferase (CCoAOMT) and alfin-like 6 (AL6), were further supported by linkage disequilibrium (LD) analysis. Finally, we discussed the potential role of nitrogen in modulating the expression of these two genes. Our findings have opened avenues for the development of improved nitrogen use-efficient switchgrass lines.
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Affiliation(s)
- Vivek Shrestha
- Department of Plant Sciences, The University of Tennessee, Knoxville, Knoxville, TN, United States
- Center for Bioenergy Innovation, Oak Ridge National Laboratory, Oak Ridge, TN, United States
| | - Hari B. Chhetri
- Center for Bioenergy Innovation, Oak Ridge National Laboratory, Oak Ridge, TN, United States
| | - David Kainer
- Center for Bioenergy Innovation, Oak Ridge National Laboratory, Oak Ridge, TN, United States
| | - Yaping Xu
- Department of Plant Sciences, The University of Tennessee, Knoxville, Knoxville, TN, United States
- Center for Bioenergy Innovation, Oak Ridge National Laboratory, Oak Ridge, TN, United States
| | - Lance Hamilton
- Department of Plant Sciences, The University of Tennessee, Knoxville, Knoxville, TN, United States
- Center for Bioenergy Innovation, Oak Ridge National Laboratory, Oak Ridge, TN, United States
| | | | - Ben Wolfe
- Department of Plant Sciences, The University of Tennessee, Knoxville, Knoxville, TN, United States
- Center for Bioenergy Innovation, Oak Ridge National Laboratory, Oak Ridge, TN, United States
| | - Xueyan Wang
- Center for Bioenergy Innovation, Oak Ridge National Laboratory, Oak Ridge, TN, United States
- Noble Research Institute, Ardmore, OK, United States
| | - Malay Saha
- Center for Bioenergy Innovation, Oak Ridge National Laboratory, Oak Ridge, TN, United States
- Noble Research Institute, Ardmore, OK, United States
| | - Daniel Jacobson
- Center for Bioenergy Innovation, Oak Ridge National Laboratory, Oak Ridge, TN, United States
| | - Reginald J. Millwood
- Department of Plant Sciences, The University of Tennessee, Knoxville, Knoxville, TN, United States
- Center for Bioenergy Innovation, Oak Ridge National Laboratory, Oak Ridge, TN, United States
| | - Mitra Mazarei
- Department of Plant Sciences, The University of Tennessee, Knoxville, Knoxville, TN, United States
- Center for Bioenergy Innovation, Oak Ridge National Laboratory, Oak Ridge, TN, United States
| | - C. Neal Stewart
- Department of Plant Sciences, The University of Tennessee, Knoxville, Knoxville, TN, United States
- Center for Bioenergy Innovation, Oak Ridge National Laboratory, Oak Ridge, TN, United States
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Nitrogen assimilation-associated enzymes and nitrogen use efficiency of Pyropia yezoensis (Rhodophyta) in nitrate-sufficient conditions. ALGAL RES 2022. [DOI: 10.1016/j.algal.2022.102682] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022]
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48
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Singh P, Kumar K, Jha AK, Yadava P, Pal M, Rakshit S, Singh I. Global gene expression profiling under nitrogen stress identifies key genes involved in nitrogen stress adaptation in maize (Zea mays L.). Sci Rep 2022; 12:4211. [PMID: 35273237 PMCID: PMC8913646 DOI: 10.1038/s41598-022-07709-z] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/02/2021] [Accepted: 02/14/2022] [Indexed: 11/25/2022] Open
Abstract
Maize is a heavy consumer of fertilizer nitrogen (N) which not only results in the high cost of cultivation but may also lead to environmental pollution. Therefore, there is a need to develop N-use efficient genotypes, a prerequisite for which is a greater understanding of N-deficiency stress adaptation. In this study, comparative transcriptome analysis was performed using leaf and root tissues from contrasting inbred lines, viz., DMI 56 (tolerant to N stress) and DMI 81 (susceptible to N stress) to delineate the differentially expressed genes (DEGs) under low-N stress. The contrasting lines were grown hydroponically in modified Hoagland solution having either sufficient- or deficient-N, followed by high-throughput RNA-sequencing. A total of 8 sequencing libraries were prepared and 88–97% of the sequenced raw reads were mapped to the reference B73 maize genome. Genes with a p value ≤ 0.05 and fold change of ≥ 2.0 or ≤ − 2 were considered as DEGs in various combinations performed between susceptible and tolerant genotypes. DEGs were further classified into different functional categories and pathways according to their putative functions. Gene Ontology based annotation of these DEGs identified three different functional categories: biological processes, molecular function, and cellular component. The KEGG and Mapman based analysis revealed that most of the DEGs fall into various metabolic pathways, biosynthesis of secondary metabolites, signal transduction, amino acid metabolism, N-assimilation and metabolism, and starch metabolism. Some of the key genes involved in N uptake (high-affinity nitrate transporter 2.2 and 2.5), N assimilation and metabolism (glutamine synthetase, asparagine synthetase), redox homeostasis (SOD, POX), and transcription factors (MYB36, AP2-EREBP) were found to be highly expressed in the tolerant genotype compared to susceptible one. The candidate genes identified in the present study might be playing a pivotal role in low-N stress adaptation in maize and hence could be useful in augmenting further research on N metabolism and development of N-deficiency tolerant maize cultivars.
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Affiliation(s)
- Prabha Singh
- Indian Council of Agricultural Research-Indian Institute of Maize Research, Pusa Campus, New Delhi, 110012, India.,Indian Council of Agricultural Research-Indian Agricultural Research Institute, Pusa Campus, New Delhi, 110012, India.,Indian Council of Agricultural Research-Indian Grassland and Fodder Research Institute, Jhansi, 284003, India
| | - Krishan Kumar
- Indian Council of Agricultural Research-Indian Institute of Maize Research, Pusa Campus, New Delhi, 110012, India
| | - Abhishek Kumar Jha
- Indian Council of Agricultural Research-Indian Institute of Maize Research, Pusa Campus, New Delhi, 110012, India
| | - Pranjal Yadava
- Indian Council of Agricultural Research-Indian Agricultural Research Institute, Pusa Campus, New Delhi, 110012, India
| | - Madan Pal
- Indian Council of Agricultural Research-Indian Agricultural Research Institute, Pusa Campus, New Delhi, 110012, India
| | - Sujay Rakshit
- Indian Council of Agricultural Research-Indian Institute of Maize Research, Pusa Campus, New Delhi, 110012, India
| | - Ishwar Singh
- Indian Council of Agricultural Research-Indian Institute of Maize Research, Pusa Campus, New Delhi, 110012, India.
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Bovet L, Campanoni P, Lu J, Hilfiker A, Kleinhans S, Laparra H, Schwaar J, Lewis RS, Matsuba Y, Ma H, Dewey RE, Goepfert S. CLCNt2 Mediates Nitrate Content in Tobacco Leaf, Impacting the Production of Tobacco-Specific Nitrosamines in Cured Leaves. FRONTIERS IN PLANT SCIENCE 2022; 13:741078. [PMID: 35251070 PMCID: PMC8888935 DOI: 10.3389/fpls.2022.741078] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 07/14/2021] [Accepted: 01/18/2022] [Indexed: 06/14/2023]
Abstract
Nitrate accumulation in tobacco (Nicotiana tabacum L.) leaf, particularly in the burley (BU) type, is a reservoir for the generation of nitrosating agents responsible for the formation of tobacco-specific nitrosamines (TSNAs). TSNAs are mainly produced via the nitrosation of alkaloids occurring during the curing of tobacco leaves. Additional formation of TSNAs may also occur during tobacco storage, leaf processing and in some circumstances via pyrosynthesis during combustion. Two TSNA species, 4-(methylnitrosamino)-1-(3-pyridyl)-1-butanone (NNK) and N-nitrosonornicotine (NNN) are found in the tobacco products and have been documented to be animal carcinogens. A previous study showed that decreasing the accumulation of nitrate in tobacco leaf via the overexpression of a deregulated form of nitrate reductase is efficient to reduce the production of TSNAs. We pursue in finding another molecular genetic target to lower nitrate in BU tobacco. Suppressing expression or knocking-out CLCNt2 has a direct impact on leaf nitrate and TSNA reduction in cured leaves without altering biomass. This study provides now a straight path toward the development of new commercial tobacco varieties with reduced TSNA levels by breeding of variants deficient in active CLCNt2 copies.
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Affiliation(s)
- Lucien Bovet
- PMI R&D, Philip Morris Products S.A., Neuchatel, Switzerland
| | | | - Jian Lu
- Department of Crop and Soil Sciences, North Carolina State University, Raleigh, NC, United States
| | - Aurore Hilfiker
- PMI R&D, Philip Morris Products S.A., Neuchatel, Switzerland
| | | | - Hélène Laparra
- PMI R&D, Philip Morris Products S.A., Neuchatel, Switzerland
| | - Joanne Schwaar
- PMI R&D, Philip Morris Products S.A., Neuchatel, Switzerland
| | - Ramsey S. Lewis
- Department of Crop and Soil Sciences, North Carolina State University, Raleigh, NC, United States
| | - Yuki Matsuba
- Department of Crop and Soil Sciences, North Carolina State University, Raleigh, NC, United States
| | - Hong Ma
- Department of Crop and Soil Sciences, North Carolina State University, Raleigh, NC, United States
| | - Ralph E. Dewey
- Department of Crop and Soil Sciences, North Carolina State University, Raleigh, NC, United States
| | - Simon Goepfert
- PMI R&D, Philip Morris Products S.A., Neuchatel, Switzerland
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Budhlakoti N, Kushwaha AK, Rai A, Chaturvedi KK, Kumar A, Pradhan AK, Kumar U, Kumar RR, Juliana P, Mishra DC, Kumar S. Genomic Selection: A Tool for Accelerating the Efficiency of Molecular Breeding for Development of Climate-Resilient Crops. Front Genet 2022; 13:832153. [PMID: 35222548 PMCID: PMC8864149 DOI: 10.3389/fgene.2022.832153] [Citation(s) in RCA: 34] [Impact Index Per Article: 17.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/09/2021] [Accepted: 01/10/2022] [Indexed: 12/17/2022] Open
Abstract
Since the inception of the theory and conceptual framework of genomic selection (GS), extensive research has been done on evaluating its efficiency for utilization in crop improvement. Though, the marker-assisted selection has proven its potential for improvement of qualitative traits controlled by one to few genes with large effects. Its role in improving quantitative traits controlled by several genes with small effects is limited. In this regard, GS that utilizes genomic-estimated breeding values of individuals obtained from genome-wide markers to choose candidates for the next breeding cycle is a powerful approach to improve quantitative traits. In the last two decades, GS has been widely adopted in animal breeding programs globally because of its potential to improve selection accuracy, minimize phenotyping, reduce cycle time, and increase genetic gains. In addition, given the promising initial evaluation outcomes of GS for the improvement of yield, biotic and abiotic stress tolerance, and quality in cereal crops like wheat, maize, and rice, prospects of integrating it in breeding crops are also being explored. Improved statistical models that leverage the genomic information to increase the prediction accuracies are critical for the effectiveness of GS-enabled breeding programs. Study on genetic architecture under drought and heat stress helps in developing production markers that can significantly accelerate the development of stress-resilient crop varieties through GS. This review focuses on the transition from traditional selection methods to GS, underlying statistical methods and tools used for this purpose, current status of GS studies in crop plants, and perspectives for its successful implementation in the development of climate-resilient crops.
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Affiliation(s)
- Neeraj Budhlakoti
- ICAR- Indian Agricultural Statistics Research Institute, New Delhi, India
| | | | - Anil Rai
- ICAR- Indian Agricultural Statistics Research Institute, New Delhi, India
| | - K K Chaturvedi
- ICAR- Indian Agricultural Statistics Research Institute, New Delhi, India
| | - Anuj Kumar
- ICAR- Indian Agricultural Statistics Research Institute, New Delhi, India
| | | | - Uttam Kumar
- Borlaug Institute for South Asia (BISA), Ludhiana, India
| | | | | | - D C Mishra
- ICAR- Indian Agricultural Statistics Research Institute, New Delhi, India
| | - Sundeep Kumar
- ICAR- National Bureau of Plant Genetic Resources, New Delhi, India
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