A Gγ protein regulates alkaline sensitivity in crops
Huili ZhangBreeding Base of State Key Laboratory of Land Degradation and Ecological Restoration of North Western China, School of Agriculture, Ningxia University, Yinchuan 750021, ChinaFeifei YuCollege of Grassland Science and Technology, China Agricultural University, Beijing 100083, ChinaPeng XieState Key Laboratory of Plant Genomics, Institute of Genetics and Developmental Biology, The Innovative Academy of Seed Design, Chinese Academy of Sciences, Beijing 100101, ChinaShengyuan SunJiangsu Key Laboratory of Crop Genetics and Physiology and Co-Innovation Center for Modern Production Technology of Grain Crops, Key Laboratory of Plant Functional Genomics of the Ministry of Education, Yangzhou University, Yangzhou 225009, ChinaXinhua QiaoNational Laboratory of Biomacromolecules, CAS Center for Excellence in Biomacromolecules, Institute of Biophysics, Chinese Academy of Sciences, Beijing 100101, ChinaSanyuan TangState Key Laboratory of Plant Genomics, Institute of Genetics and Developmental Biology, The Innovative Academy of Seed Design, Chinese Academy of Sciences, Beijing 100101, ChinaChengxuan ChenNational Laboratory of Biomacromolecules, CAS Center for Excellence in Biomacromolecules, Institute of Biophysics, Chinese Academy of Sciences, Beijing 100101, ChinaSen YangState Key Laboratory of Plant Genomics, Institute of Genetics and Developmental Biology, The Innovative Academy of Seed Design, Chinese Academy of Sciences, Beijing 100101, ChinaCuo MeiState Key Laboratory of Plant Genomics, Institute of Genetics and Developmental Biology, The Innovative Academy of Seed Design, Chinese Academy of Sciences, Beijing 100101, ChinaDekai YangState Key Laboratory of Plant Genomics, Institute of Genetics and Developmental Biology, The Innovative Academy of Seed Design, Chinese Academy of Sciences, Beijing 100101, ChinaYaorong WuState Key Laboratory of Plant Genomics, Institute of Genetics and Developmental Biology, The Innovative Academy of Seed Design, Chinese Academy of Sciences, Beijing 100101, ChinaRan XiaState Key Laboratory of Plant Genomics, Institute of Genetics and Developmental Biology, The Innovative Academy of Seed Design, Chinese Academy of Sciences, Beijing 100101, ChinaXu LiNational Key Laboratory of Crop Genetic Improvement and National Centre of Plant Gene Research (Wuhan), Hubei Hongshan Laboratory, Huazhong Agricultural University, Wuhan 430070, ChinaJun LüNational Key Laboratory of Crop Genetic Improvement and National Centre of Plant Gene Research (Wuhan), Hubei Hongshan Laboratory, Huazhong Agricultural University, Wuhan 430070, ChinaYuxi LiuNational Key Laboratory of Crop Genetic Improvement and National Centre of Plant Gene Research (Wuhan), Hubei Hongshan Laboratory, Huazhong Agricultural University, Wuhan 430070, ChinaXiaowei XieBreeding Base of State Key Laboratory of Land Degradation and Ecological Restoration of North Western China, School of Agriculture, Ningxia University, Yinchuan 750021, ChinaDongmei MaBreeding Base of State Key Laboratory of Land Degradation and Ecological Restoration of North Western China, School of Agriculture, Ningxia University, Yinchuan 750021, ChinaXing XuBreeding Base of State Key Laboratory of Land Degradation and Ecological Restoration of North Western China, School of Agriculture, Ningxia University, Yinchuan 750021, ChinaZhengwei LiangNortheast Institute of Geography and Agroecology, Daan National Station for Agro-ecosystem Observation and Research, Chinese Academy of Sciences, Changchun 130102, ChinaZhonghui FengUniversity of Chinese Academy of Sciences, Beijing 100049, ChinaXiahe HuangState Key Laboratory of Plant Genomics, Institute of Genetics and Developmental Biology, The Innovative Academy of Seed Design, Chinese Academy of Sciences, Beijing 100101, ChinaHong YuState Key Laboratory of Plant Genomics, Institute of Genetics and Developmental Biology, The Innovative Academy of Seed Design, Chinese Academy of Sciences, Beijing 100101, ChinaGuifu LiuState Key Laboratory of Plant Genomics, Institute of Genetics and Developmental Biology, The Innovative Academy of Seed Design, Chinese Academy of Sciences, Beijing 100101, ChinaYingchun WangState Key Laboratory of Plant Genomics, Institute of Genetics and Developmental Biology, The Innovative Academy of Seed Design, Chinese Academy of Sciences, Beijing 100101, ChinaJiayang LiState Key Laboratory of Plant Genomics, Institute of Genetics and Developmental Biology, The Innovative Academy of Seed Design, Chinese Academy of Sciences, Beijing 100101, ChinaQifa ZhangNational Key Laboratory of Crop Genetic Improvement and National Centre of Plant Gene Research (Wuhan), Hubei Hongshan Laboratory, Huazhong Agricultural University, Wuhan 430070, ChinaChang ChenNational Laboratory of Biomacromolecules, CAS Center for Excellence in Biomacromolecules, Institute of Biophysics, Chinese Academy of Sciences, Beijing 100101, ChinaYidan OuyangNational Key Laboratory of Crop Genetic Improvement and National Centre of Plant Gene Research (Wuhan), Hubei Hongshan Laboratory, Huazhong Agricultural University, Wuhan 430070, ChinaQi XieNational Center of Technology Innovation for Maize, State Key Laboratory of Maize Germplasm Innovation and Molecular Breeding, Syngenta Group China, Beijing 102206, China
2023en
ABI
Abstract
The use of alkaline salt lands for crop production is hindered by a scarcity of knowledge and breeding efforts for plant alkaline tolerance. Through genome association analysis of sorghum, a naturally high-alkaline–tolerant crop, we detected a major locus, Alkaline Tolerance 1 ( AT1 ), specifically related to alkaline-salinity sensitivity. An at1 allele with a carboxyl-terminal truncation increased sensitivity, whereas knockout of AT1 increased tolerance to alkalinity in sorghum, millet, rice, and maize. AT1 encodes an atypical G protein γ subunit that affects the phosphorylation of aquaporins to modulate the distribution of hydrogen peroxide (H 2 O 2 ) . These processes appear to protect plants against oxidative stress by alkali. Designing knockouts of AT1 homologs or selecting its natural nonfunctional alleles could improve crop productivity in sodic lands.
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