Exogenous gamma-aminobutyric acid (GABA) improves salt-inhibited nitrogen metabolism and the anaplerotic reaction of the tricarboxylic acid cycle by regulating GABA-shunt metabolism in maize seedlings
文献类型： 外文期刊
作者： Wang, Yongchao 1 ; Cao, Hongzhang 1 ; Wang, Shancong 1 ; Guo, Jiameng 1 ; Dou, Hangyu 1 ; Qiao, Jiangfang 3 ; Yang, Qinghua 1 ; Shao, Ruixin 1 ; Wang, Hao 1 ;
作者机构： 1.Henan Agr Univ, Coll Agron, Zhengzhou 450046, Peoples R China
2.Henan Engn Res Ctr crop Chem Control, Zhengzhou 450046, Peoples R China
3.Henan Acad Agr Sci, Cereal Inst, Zhengzhou 450099, Peoples R China
关键词： gamma-Aminobutyric acid; Maize; Nitrogen metabolism; Tricarboxylic acid cycle; Oxidative damage; Salt tolerance
期刊名称：ECOTOXICOLOGY AND ENVIRONMENTAL SAFETY （ 影响因子：6.8； 五年影响因子：6.9 ）
ISSN： 0147-6513
年卷期： 2023 年 254 卷
页码：
收录情况： SCI
摘要： Salinity stress hampers the growth of most crop plants and reduces yield considerably. In addition to its role in metabolism, gamma-aminobutyric acid (GABA) plays a special role in the regulation of salinity stress tolerance in plants, though the underlying physiological mechanism remains poorly understood. In order to study the physiological mechanism of GABA pathway regulated carbon and nitrogen metabolism and tis relationship with salt resistance of maize seedlings, we supplemented seedlings with exogenous GABA under salt stress. In this study, we showed that supplementation with 0.5 mmol.L-1 (0.052 mg.g(-1)) GABA alleviated salt toxicity in maize seedling leaves, ameliorated salt-induced oxidative stress, and increased antioxidant enzyme activity. Applying exogenous GABA maintained chloroplast structure and relieved chlorophyll degradation, thus improving the photosynthetic performance of the leaves. Due to the improvement in photosynthesis, sugar accumulation also increased. Endogenous GABA content and GABA transaminase (GABA-T) and succinate semialdehyde dehydrogenase (SSADH) activity were increased, while glutamate decarboxylase (GAD) activity was decreased, via the exogenous application of GABA under salt stress. Meanwhile, nitrogen metabolism and the tricarboxylic acid (TCA) cycle were activated by the supply of GABA. In general, through the regulation of GABA-shunt metabolism, GABA activated enzymes related to nitrogen metabolism and replenished the key substrates of the TCA cycle, thereby improving the balance of carbon and nitrogen metabolism of maize and improving salt tolerance.
- 相关文献
作者其他论文 更多>>
-
Genome-wide association study of maize resistance to Pythium aristosporum stalk rot
作者：Hou, Mengwei;Cao, Yanyong;Jia, Tengjiao;Yang, Jiwei;Han, Shengbo;Wang, Lifeng;Li, Jingjing;Wang, Hao;Zhang, Lili;Li, Huiyong;Zhang, Xingrui;Duan, Canxing;Zhang, Shulin;Wu, Xiaolin
关键词：maize stalk rot; Pythium aristosporum; genome-wide association study; resistance gene; leucine-rich repeat receptor-like kinase; virus-induced gene silencing
-
Proteomics Analysis Reveals Hormone Metabolic Process Involved in the Regulation of Kernel Water Content Induced by Exogenous Abscisic Acid in Maize
作者：He, Jiawen;Li, Chuan;Zhang, Meiwei;Zhang, Panpan;Niu, Jun;Guo, Hanxiao;Mu, Weilin;Qiao, Jiangfang;He, Jiawen;Iqbal, Zubair;Shao, Ruixin
关键词：proteomics; kernel water content; exogenous abscisic acid; grain development; dehydration; differentially abundant proteins; gene ontology; grain-filling characteristics; yield
-
On correlation between canopy vegetation and growth indexes of maize varieties with different nitrogen efficiencies
作者：Wang, ShuaiLi;Wen, Tao;Xu, Jiamin;Gao, Gangqiang;Zhao, Yali;Li, Hongping;Liu, Tianxue;Zhao, Xia;Wang, ShuaiLi;Wen, Tao;Xu, Jiamin;Huang, Bao;Yan, Shufeng;Qiao, Jiangfang;Mu, Xinyuan;Yang, Jinliang;Wu, Lianhai;Wang, Hongwei
关键词：maize; nitrogen efficiency; vegetation indices; leaf nitrogen content; dry matter content
-
Stigma receptors control intraspecies and interspecies barriers in Brassicaceae
作者：Huang, Jiabao;Yang, Lin;Yang, Liu;Wu, Xiaoyu;Cui, Xiaoshuang;Zhang, Lili;Hui, Jiyun;Zhao, Yumei;Yang, Hongmin;Liu, Shangjia;Xu, Quanling;Pang, Maoxuan;Guo, Xinping;Cao, Yunyun;Chen, Yu;Ren, Xinru;Lv, Jinzhi;Yu, Jianqiang;Ding, Junyi;Xu, Gang;Wang, Nian;Zhang, Xiansheng;Duan, Qiaohong;Huang, Jiabao;Yang, Lin;Yang, Liu;Wu, Xiaoyu;Cui, Xiaoshuang;Zhang, Lili;Hui, Jiyun;Zhao, Yumei;Yang, Hongmin;Liu, Shangjia;Xu, Quanling;Pang, Maoxuan;Guo, Xinping;Cao, Yunyun;Chen, Yu;Ren, Xinru;Lv, Jinzhi;Yu, Jianqiang;Duan, Qiaohong;Wei, Xiaochun;Yuan, Yuxiang;Zhang, Xiaowei;Lin, Qinghui;Ma, Chaozhi;Dai, Cheng;Wang, Pengwei;Wang, Yongchao;Cheng, Fei;Zeng, Weiqing;Palanivelu, Ravishankar;Wu, Hen-Ming;Cheung, Alice Y.
关键词：
-
Ovary abortion in field-grown maize under water-deficit conditions is determined by photo-assimilation supply
作者：Tang, Yulou;Guo, Jiameng;Wang, Yongchao;Wang, Hao;Yang, Qinghua;Shao, Ruixin;Tang, Yulou;Guo, Jiameng;Wang, Yongchao;Wang, Hao;Yang, Qinghua;Shao, Ruixin;Jagadish, S. V. Krishna;Yang, Shenjiao;Xie, Kun;Qiao, Jiangfang;Deng, Lei
关键词：Maize; Water deficit; Ear differentiation stage; Ovary development; Photo-assimilation
-
The RppC-AvrRppC NLR-effector interaction mediates the resistance to southern corn rust in maize
作者：Deng, Ce;Lv, Meng;Li, Xueying;Zhao, Xiaodi;Du, Wenjie;Li, Zheng;Li, Huimin;Li, Zhimin;Tian, Zhiqiang;Yang, Qinghua;Chen, Yanhui;Tang, Jihua;Xiong, Wei;Sun, Juan;Ding, Junqiang;Deng, Ce;Lv, Meng;Li, Xueying;Zhao, Xiaodi;Du, Wenjie;Li, Zheng;Li, Zhimin;Tian, Zhiqiang;Yang, Qinghua;Chen, Yanhui;Tang, Jihua;Xiong, Wei;Sun, Juan;Ding, Junqiang;Leonard, April;Cahill, James;Li, Yurong;Thatcher, Shawn;Llaca, Victor;Fengler, Kevin;Marshall, Lisa;Harris, Charlotte;Tabor, Girma;Li, Bailin;Wang, Xintao;Hao, Junjie;Yan, Jianbing;Lai, Zhibing;Fei, Xiaohong;Song, Weibin;Lai, Jinsheng;Zhang, Xuecai;Xiong, Wei;Shu, Guoping;Wang, Yibo;Chang, Yuxiao;Zhu, Weiling
关键词：Key words; maize; Zea mays; RppC; AvrRppC; southern corn rust; SCR
-
Association Mapping and Transcriptome Analysis Reveal the Genetic Architecture of Maize Kernel Size
作者：Ma, Juan;Wang, Lifeng;Cao, Yanyong;Wang, Hao;Li, Huiyong
关键词：kernel size; kernel development; genome-wide association study; transcriptome; differentially expressed genes
