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Brassinosteroids Confer Resistance to Isoproturon through OsBZR4-Mediated Degradation Genes in Rice (Oryza sativa L.)

文献类型： 外文期刊

作者： Su, Xiang Ning 1 ; Li, Chuan Ying 1 ; Liu, Xue Song 4 ; Zhang, Yu Ping 1 ;

作者机构： 1.Guangdong Acad Agr Sci, Res Inst Plant Protect, Guangzhou 510640, Peoples R China

2.Minist Agr & Rural Affairs, Key Lab Green Prevent & Control Fruits & Vegetable, Guangzhou 510640, Peoples R China

3.Key Lab High Technol Plant Protect Guangdong Prov, Guangzhou 510640, Peoples R China

4.Jiangsu Acad Agr Sci, Inst Agr Facil & Equipment, Nanjing 210014, Peoples R China

关键词： brassinosteroid; detoxification; isoproturon; metabolites; rice

期刊名称：JOURNAL OF AGRICULTURAL AND FOOD CHEMISTRY （ 影响因子：6.2； 五年影响因子：6.4 ）

ISSN： 0021-8561

年卷期： 2024 年 72 卷 37 期

页码：

收录情况： SCI

摘要： Plants have complex detoxification and metabolic systems that enable them to deal with environmental pollutants. We report accumulation of the pesticide isoproturon (IPU) in a BR signaling pathway for mutant bzr4-3/5 rice to be significantly higher than in wild-type (WT) rice controls and for exogenous 24-epibrassinolide to reverse toxic symptoms in WT rice but not in mutants. A genome-wide RNA sequencing study of WT/bzr4 rice is performed to identify transcriptomic changes and metabolic mechanisms under IPU exposure. Three differentially expressed genes in yeast cells increase the degradation rate of IPU in a growth medium by factors of 1.61, 1.51, and 1.29 after 72 h. Using UPLC/Q-TOF-MS/MS, five phase I metabolites and five phase II conjugates are characterized in rice grains, with concentrations generally decreasing in bzr4 rice grains. OsBZR4, a regulator of IPU degradation in rice, may eliminate IPU from edible parts of food crops by regulating downstream metabolic genes.

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