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UDP-glucosyltransferase regulates grain size and abiotic stress tolerance associated with metabolic flux redirection in rice

Author

Listed:
  • Nai-Qian Dong

    (National Key Laboratory of Plant Molecular Genetics, CAS Centre for Excellence in Molecular Plant Sciences and Collaborative Innovation Center of Genetics & Development, Shanghai Institute of Plant Physiology & Ecology, Chinese Academic of Sciences)

  • Yuwei Sun

    (CAS-Key Laboratory of Synthetic Biology, CAS Center for Excellence in Molecular Plant Sciences, Shanghai Institute of Plant Physiology & Ecology, Chinese Academy of Sciences)

  • Tao Guo

    (National Key Laboratory of Plant Molecular Genetics, CAS Centre for Excellence in Molecular Plant Sciences and Collaborative Innovation Center of Genetics & Development, Shanghai Institute of Plant Physiology & Ecology, Chinese Academic of Sciences)

  • Chuan-Lin Shi

    (National Key Laboratory of Plant Molecular Genetics, CAS Centre for Excellence in Molecular Plant Sciences and Collaborative Innovation Center of Genetics & Development, Shanghai Institute of Plant Physiology & Ecology, Chinese Academic of Sciences
    University of the Chinese Academy of Sciences)

  • Yi-Min Zhang

    (National Key Laboratory of Plant Molecular Genetics, CAS Centre for Excellence in Molecular Plant Sciences and Collaborative Innovation Center of Genetics & Development, Shanghai Institute of Plant Physiology & Ecology, Chinese Academic of Sciences
    University of the Chinese Academy of Sciences)

  • Yi Kan

    (National Key Laboratory of Plant Molecular Genetics, CAS Centre for Excellence in Molecular Plant Sciences and Collaborative Innovation Center of Genetics & Development, Shanghai Institute of Plant Physiology & Ecology, Chinese Academic of Sciences
    University of the Chinese Academy of Sciences)

  • You-Huang Xiang

    (National Key Laboratory of Plant Molecular Genetics, CAS Centre for Excellence in Molecular Plant Sciences and Collaborative Innovation Center of Genetics & Development, Shanghai Institute of Plant Physiology & Ecology, Chinese Academic of Sciences
    University of the Chinese Academy of Sciences)

  • Hai Zhang

    (National Key Laboratory of Plant Molecular Genetics, CAS Centre for Excellence in Molecular Plant Sciences and Collaborative Innovation Center of Genetics & Development, Shanghai Institute of Plant Physiology & Ecology, Chinese Academic of Sciences
    School of Life Science and Technology, ShanghaiTech University)

  • Yi-Bing Yang

    (National Key Laboratory of Plant Molecular Genetics, CAS Centre for Excellence in Molecular Plant Sciences and Collaborative Innovation Center of Genetics & Development, Shanghai Institute of Plant Physiology & Ecology, Chinese Academic of Sciences
    University of the Chinese Academy of Sciences)

  • Ya-Chao Li

    (National Key Laboratory of Plant Molecular Genetics, CAS Centre for Excellence in Molecular Plant Sciences and Collaborative Innovation Center of Genetics & Development, Shanghai Institute of Plant Physiology & Ecology, Chinese Academic of Sciences
    School of Life Science and Technology, ShanghaiTech University)

  • Huai-Yu Zhao

    (National Key Laboratory of Plant Molecular Genetics, CAS Centre for Excellence in Molecular Plant Sciences and Collaborative Innovation Center of Genetics & Development, Shanghai Institute of Plant Physiology & Ecology, Chinese Academic of Sciences
    University of the Chinese Academy of Sciences)

  • Hong-Xiao Yu

    (National Key Laboratory of Plant Molecular Genetics, CAS Centre for Excellence in Molecular Plant Sciences and Collaborative Innovation Center of Genetics & Development, Shanghai Institute of Plant Physiology & Ecology, Chinese Academic of Sciences
    University of the Chinese Academy of Sciences)

  • Zi-Qi Lu

    (National Key Laboratory of Plant Molecular Genetics, CAS Centre for Excellence in Molecular Plant Sciences and Collaborative Innovation Center of Genetics & Development, Shanghai Institute of Plant Physiology & Ecology, Chinese Academic of Sciences
    School of Life Science and Technology, ShanghaiTech University)

  • Yong Wang

    (CAS-Key Laboratory of Synthetic Biology, CAS Center for Excellence in Molecular Plant Sciences, Shanghai Institute of Plant Physiology & Ecology, Chinese Academy of Sciences
    University of the Chinese Academy of Sciences)

  • Wang-Wei Ye

    (National Key Laboratory of Plant Molecular Genetics, CAS Centre for Excellence in Molecular Plant Sciences and Collaborative Innovation Center of Genetics & Development, Shanghai Institute of Plant Physiology & Ecology, Chinese Academic of Sciences)

  • Jun-Xiang Shan

    (National Key Laboratory of Plant Molecular Genetics, CAS Centre for Excellence in Molecular Plant Sciences and Collaborative Innovation Center of Genetics & Development, Shanghai Institute of Plant Physiology & Ecology, Chinese Academic of Sciences)

  • Hong-Xuan Lin

    (National Key Laboratory of Plant Molecular Genetics, CAS Centre for Excellence in Molecular Plant Sciences and Collaborative Innovation Center of Genetics & Development, Shanghai Institute of Plant Physiology & Ecology, Chinese Academic of Sciences
    University of the Chinese Academy of Sciences
    School of Life Science and Technology, ShanghaiTech University)

Abstract

Grain size is an important component trait of grain yield, which is frequently threatened by abiotic stress. However, little is known about how grain yield and abiotic stress tolerance are regulated. Here, we characterize GSA1, a quantitative trait locus (QTL) regulating grain size and abiotic stress tolerance associated with metabolic flux redirection. GSA1 encodes a UDP-glucosyltransferase, which exhibits glucosyltransferase activity toward flavonoids and monolignols. GSA1 regulates grain size by modulating cell proliferation and expansion, which are regulated by flavonoid-mediated auxin levels and related gene expression. GSA1 is required for the redirection of metabolic flux from lignin biosynthesis to flavonoid biosynthesis under abiotic stress and the accumulation of flavonoid glycosides, which protect rice against abiotic stress. GSA1 overexpression results in larger grains and enhanced abiotic stress tolerance. Our findings provide insights into the regulation of grain size and abiotic stress tolerance associated with metabolic flux redirection and a potential means to improve crops.

Suggested Citation

  • Nai-Qian Dong & Yuwei Sun & Tao Guo & Chuan-Lin Shi & Yi-Min Zhang & Yi Kan & You-Huang Xiang & Hai Zhang & Yi-Bing Yang & Ya-Chao Li & Huai-Yu Zhao & Hong-Xiao Yu & Zi-Qi Lu & Yong Wang & Wang-Wei Ye, 2020. "UDP-glucosyltransferase regulates grain size and abiotic stress tolerance associated with metabolic flux redirection in rice," Nature Communications, Nature, vol. 11(1), pages 1-16, December.
    • Handle: RePEc:nat:natcom:v:11:y:2020:i:1:d:10.1038_s41467-020-16403-5
    DOI: 10.1038/s41467-020-16403-5
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