A novel OsGST gene encoding 9glutathione reductase negatively regulates cadmium accumulation in rice
文献类型: 外文期刊
作者: Guo, Rui 1 ; Li, Su 1 ; Gao, Yong Qiang 1 ; He, Jia Tong 1 ; Wang, Hao Yu 1 ; Chen, Jin 3 ; Huang, Jiu 2 ; Shen, Ren Fang 1 ; Zhu, Xiao Fang 1 ;
作者机构: 1.Chinese Acad Sci, Inst Soil Sci, State Key Lab Soil & Sustainable Agr, Nanjing 210008, Peoples R China
2.China Univ Min & Technol, Sch Environm Sci & Spatial Informat, Xuzhou 221116, Peoples R China
3.Jiangxi Acad Agr Sci, Soil & Fertilizer & Resources & Environm Inst, Nanchang 330200, Peoples R China
4.Jinggangshan Inst Red Soil, Jian 343016, Jiangxi, Peoples R China
关键词: Antioxidant; Cd; OsGST; Rice; ROS
期刊名称:JOURNAL OF HAZARDOUS MATERIALS ( 影响因子:12.2; 五年影响因子:11.9 )
ISSN: 0304-3894
年卷期: 2024 年 476 卷
页码:
收录情况: SCI
摘要: Cadmium (Cd) accumulates in rice and then moves up the food chain, causing serious health problems for humans. Glutathione S-transferase (GST) binds exogenous hazardous compounds to glutathione (GSH), which performs a variety of roles in plant responses to Cd stress. Here, Cd stimulated the transcripts of a novel OsGST gene, and the OsGST protein, which was localized in the nucleus and cytoplasm, was also induced by Cd. In OsGST deletion mutant lines generated by CRISPR/Cas9, more Cd was accumulated, and Cd hypersensitive phenotypes were observed, while transgenic lines overexpressing OsGST exhibited enhanced Cd tolerance and less Cd accumulation. Further analysis indicated that the osgst mutants exhibited considerably greater reactive oxygen species (ROS) and higher GSH level, and the antioxidant activity associated genes' expression were down-regulated, imply that OsGST controlled rice Cd accumulation and resistance through preserving the equilibrium of the GSH and redox in rice.
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