The plastid‐localized lipoamide dehydrogenase 1 is crucial for redox homeostasis, tolerance to arsenic stress and fatty acid biosynthesis in rice

• Published in: The New phytologist Vol. 242; no. 6; pp. 2604 - 2619
• Main Authors: Chen, Ting‐Ting, Zhao, Peng, Wang, Yuan, Wang, Han‐Qing, Tang, Zhu, Hu, Han, Liu, Yu, Xu, Ji‐Ming, Mao, Chuan‐Zao, Zhao, Fang‐Jie, Wu, Zhong‐Chang
• Format: Journal Article
• Language: English
• Published: England Wiley Subscription Services, Inc 01.06.2024
• Subjects: Adaptation, Physiological - drug effects; Adaptation, Physiological - genetics; Arsenates; Arsenic; Arsenic - toxicity; Arsenite; arsenites; Arsenites - toxicity; Biological stress; Biosynthesis; Complementation; Contamination; Crop yield; Dehydrogenase; Dehydrogenases; Dihydrolipoamide Dehydrogenase - genetics; Dihydrolipoamide Dehydrogenase - metabolism; Fatty acids; Fatty Acids - biosynthesis; Gene Expression Regulation, Plant - drug effects; genes; Genetics; genomics; Homeostasis; Hypersensitivity; Localization; loss-of-function mutation; LPD1; Meristems; Mesophyll; Mutants; Mutation - genetics; NADH; Nicotinamide adenine dinucleotide; Oryza - drug effects; Oryza - genetics; Oryza - metabolism; Oxidation-Reduction - drug effects; Oxidative stress; Oxidative Stress - drug effects; oxidoreductases; Phytotoxicity; Plant Proteins - genetics; Plant Proteins - metabolism; Plant Roots - drug effects; Plant Roots - metabolism; Plant tissues; Plastids; Plastids - drug effects; Plastids - metabolism; Reactive oxygen species; Reactive Oxygen Species - metabolism; Redox; Rice; root meristems; Roots; ROS; Soil contamination; Soil pollution; Stress, Physiological - drug effects; Stress, Physiological - genetics; Stroma; Toxicity; Toxicity tolerance; Vascular tissue; Redox; LPD1; NADH; arsenic; ROS

Summary Soil contamination with arsenic (As) can cause phytotoxicity and reduce crop yield. The mechanisms of As toxicity and tolerance are not fully understood. In this study, we used a forward genetics approach to isolate a rice mutant, ahs1, that exhibits hypersensitivity to both arsenate and ars...