Molecular Responses and Degradation Mechanisms of the Herbicide Diuron in Rice Crops

文献类型： 外文期刊

第一作者： Wang, Xiao Dong

作者： Wang, Xiao Dong;Zhang, Chen Yi;Hua, Yi Fei;Qin, Yi;Xiong, Xiao Hui;Zhu, Jian Liang;Lu, Yi Chen;Yuan, Yi;Asami, Tadao

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关键词： rice; transcriptome; diuron; metabolism fate; phytohormones

期刊名称：JOURNAL OF AGRICULTURAL AND FOOD CHEMISTRY （ 影响因子：5.895； 五年影响因子：6.048 ）

ISSN： 0021-8561

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页码：

收录情况： SCI

摘要： Diuron [DU; 3-(3,4-dichlorophenyl)-1,1-dimethylurea], a widely used herbicide for weed control, arouses ecological and health risks due to its environment persistence. Our findings revealed that DU at 0.125-2.0 mg L-1 caused oxidative damage to rice. RNA-sequencing profiles disclosed a globally genetic expression landscape of rice under DU treatment. DU mediated downregulated gene encoding photosynthesis and biosynthesis of protein, fatty acid, and carbohydrate. Conversely, it induced the upregulation of numerous genes involved in xenobiotic metabolism, detoxification, and anti-oxidation. Furthermore, 15 DU metabolites produced by metabolic genes were identified, 7 of which include two Phase I-based and 5 Phase II-based derivatives, were reported for the first time. The changes of resistance-related phytohormones, like JA, ABA, and SA, in terms of their contents and molecular-regulated signaling pathways positively responded to DU stress. Our work provides a molecular-scale perspective on the response of rice to DU toxicity and clarifies the biotransformation and degradation fate of DU in rice crops.

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