Comparative Metabolomics Combined with Physiological Analysis Revealed Cadmium Tolerance Mechanism in Indica Rice (Oryza sativa L.)

文献类型： 外文期刊

第一作者： Chang, Weixia

作者： Chang, Weixia;Wang, Wei;Cao, Guodong;Zhao, Xingchen;Su, Xiuli;Chen, Yi;Wu, Jiabin;Yang, Zhu;Cai, Zongwei;Shi, Zhangsheng;Liu, Chaolei;Shang, Lianguang

作者机构：

关键词： rice; cadmium stress; tolerant genotype; physiology; metabolomics

期刊名称：JOURNAL OF AGRICULTURAL AND FOOD CHEMISTRY （ 影响因子：6.1； 五年影响因子：6.3 ）

ISSN： 0021-8561

年卷期： 2023 年 71 卷 20 期

页码：

收录情况： SCI

摘要： Cadmium (Cd) pollution reduces rice production and quality, putting food security and human health at risk. We conducted comparative physiology and metabolomic analyses in two indica rice ('NH199' and 'NH224') to elucidate the Cdtolerance mechanism. Cd hampered rice growth, induced oxidative stress, and changed the metabolomics profiling of the root. The biochemical and physiological analysis demonstrated that NH224 exhibited a more potent Cd-tolerance ability than NH199. Cd was primarily distributed in root, and NH224 had a lower Cd translocation factor than NH199 by about 24%. The metabolomic analysis revealed 180 and 177 differentially accumulated metabolites between Cd-stressed seedlings and the controls in NH224 and NH199, respectively. In NH224, amino acids biosynthesis, hormone metabolism, lipids-related metabolism, phenylalanine metabolism, and phenylpropanoid biosynthesis pathways were more active and highly associated with antioxidant defense system, biosynthesis of the cell wall and phytochelatins, and maintenance of plasma membrane stability. These findings provide insights into the metabolic profiles of rice following Cd stress and the screening and breeding of Cd-tolerant rice varieties.

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