Communications Biology (Oct 2021)

A rice QTL GS3.1 regulates grain size through metabolic-flux distribution between flavonoid and lignin metabolons without affecting stress tolerance

  • Yi-Min Zhang,
  • Hong-Xiao Yu,
  • Wang-Wei Ye,
  • Jun-Xiang Shan,
  • Nai-Qian Dong,
  • Tao Guo,
  • Yi Kan,
  • You-Huang Xiang,
  • Hai Zhang,
  • Yi-Bing Yang,
  • Ya-Chao Li,
  • Huai-Yu Zhao,
  • Zi-Qi Lu,
  • Shuang-Qin Guo,
  • Jie-Jie Lei,
  • Ben Liao,
  • Xiao-Rui Mu,
  • Ying-Jie Cao,
  • Jia-Jun Yu,
  • Hong-Xuan Lin

DOI
https://doi.org/10.1038/s42003-021-02686-x
Journal volume & issue
Vol. 4, no. 1
pp. 1 – 14

Abstract

Read online

Zhang et al. report QTL GS3.1 as regulating rice grain size via metabolic flux allocation between two branches of phenylpropanoid metabolism. Their results identify the biosynthetic pathway for grain size regulation via a multidrug and toxic compounds extrusion transporter, and demonstrate enlarged grains, reduced flavonoid content, and increased lignin content in the panicles with GS3.1.