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Natural variation in Glume Coverage 1 causes naked grains in sorghum

Author

Listed:
  • Peng Xie

    (Chinese Academy of Sciences
    University of Chinese Academy of Sciences)

  • Sanyuan Tang

    (Chinese Academy of Sciences)

  • Chengxuan Chen

    (Chinese Academy of Sciences
    University of Chinese Academy of Sciences)

  • Huili Zhang

    (Chinese Academy of Sciences)

  • Feifei Yu

    (Chinese Academy of Sciences)

  • Chao Li

    (Chinese Academy of Sciences)

  • Huimin Wei

    (Chinese Academy of Sciences
    University of Chinese Academy of Sciences)

  • Yi Sui

    (Chinese Academy of Agricultural Sciences)

  • Chuanyin Wu

    (Chinese Academy of Agricultural Sciences)

  • Xianmin Diao

    (Chinese Academy of Agricultural Sciences)

  • Yaorong Wu

    (Chinese Academy of Sciences)

  • Qi Xie

    (Chinese Academy of Sciences
    University of Chinese Academy of Sciences)

Abstract

One of the most critical steps in cereal threshing is the ease with which seeds are detached from sticky glumes. Naked grains with low glume coverage have dramatically increased threshing efficiency and seed quality. Here, we demonstrate that GC1 (Glume Coverage 1), encoding an atypical G protein γ subunit, negatively regulates sorghum glume coverage. Naturally truncated variations of GC1 C-terminus accumulate at higher protein levels and affect the stability of a patatin-related phospholipase SbpPLAII-1. A strong positive selection signature around the GC1 genic region is found in the naked sorghum cultivars. Our findings reveal a crucial event during sorghum domestication through a subtle regulation of glume development by GC1 C-terminus variation, and establish a strategy for future breeding of naked grains.

Suggested Citation

  • Peng Xie & Sanyuan Tang & Chengxuan Chen & Huili Zhang & Feifei Yu & Chao Li & Huimin Wei & Yi Sui & Chuanyin Wu & Xianmin Diao & Yaorong Wu & Qi Xie, 2022. "Natural variation in Glume Coverage 1 causes naked grains in sorghum," Nature Communications, Nature, vol. 13(1), pages 1-13, December.
    • Handle: RePEc:nat:natcom:v:13:y:2022:i:1:d:10.1038_s41467-022-28680-3
    DOI: 10.1038/s41467-022-28680-3
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    1. Andrew H. Paterson & John E. Bowers & Rémy Bruggmann & Inna Dubchak & Jane Grimwood & Heidrun Gundlach & Georg Haberer & Uffe Hellsten & Therese Mitros & Alexander Poliakov & Jeremy Schmutz & Manuel S, 2009. "The Sorghum bicolor genome and the diversification of grasses," Nature, Nature, vol. 457(7229), pages 551-556, January.
    2. Huai Wang & Tina Nussbaum-Wagler & Bailin Li & Qiong Zhao & Yves Vigouroux & Marianna Faller & Kirsten Bomblies & Lewis Lukens & John F. Doebley, 2005. "The origin of the naked grains of maize," Nature, Nature, vol. 436(7051), pages 714-719, August.
    3. Shengyuan Sun & Lei Wang & Hailiang Mao & Lin Shao & Xianghua Li & Jinghua Xiao & Yidan Ouyang & Qifa Zhang, 2018. "A G-protein pathway determines grain size in rice," Nature Communications, Nature, vol. 9(1), pages 1-11, December.
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