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Natural variations of zmsro1d modulate the trade-off between drought resistance and yield by affecting ZmRBOHC-mediated stomatal ROS production in maize

引用

Molecular Plant 2022年第10期15卷 1558-1574页

作者： Huajian Gao Junjun Cui Shengxue Liu Shuhui Wang Yongyan Lian Yunting Bai Tengfei Zhu Haohao Wu Yijie Wang Shiping Yang Xuefeng Li Junhong Zhuang Limei Chen Zhizhong Gong Feng Qin Key Laboratory of Plant Molecular Physiology Institute of BotanyChinese Academy of SciencesBeijing 100093China University of Chinese Academy of Sciences Beijing 100049China State Key Laboratory of Plant Physiology and Biochemistry College of Biological SciencesChina Agricultural UniversityBeijing 100193China Center for Crop Functional Genomics and Molecular Breeding China Agricultural UniversityBejing 100193China School of Life Science Institute of Life Science and Green DevelopmentHebei UniversityBaodingHebei071002China

While crop yields have historically increased,drought resistance has become a major concern in the context of global climate *** trade-off between crop yield and drought resistance is a common phenomenon;however,the underlying molecular modulators remain *** genome-wide association study,we revealed that three non-synonymous variants in a drought-resistant allele of zmsro1d-R resulted in plasma membrane localization and enhanced mono-AdP-ribosyltransferase activity of zmsro1d toward ZmRBOHC,which increased reactive oxygen species(ROS)levels in guard cells and promoted stomatal ***1d-R enhanced plant drought resilience and protected grain yields under drought conditions,but it led to yield drag under favorable *** contrast,loss-of-function mutants of ZmRBOHC showed remarkably increased yields under well-watered conditions,whereas they showed compromised drought ***,by analyzing 189 teosinte accessions,we found that the zmsro1d-R allele was present in teosinte but was selected against during maize domestication and modern ***,our work suggests that the allele frequency reduction of zmsro1d-R in breeding programs may have compromised maize drought resistance while increased ***,introduction of the zmsro1d-R allele into modern maize cultivars would contribute to food security under drought stress caused by global climate change.

关键词： zmsro1d stomatal ROS drought resistance yield maize

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