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Natural variation in Glume Coverage 1 causes naked grains in sorghum

Agriculture

Natural variation in Glume Coverage 1 causes naked grains in sorghum

P. Xie, S. Tang, et al.

Discover how *GC1*, an atypical G protein γ subunit, plays a critical role in regulating sorghum glume coverage. This groundbreaking research, conducted by Peng Xie and colleagues, reveals the genetic variations that influence protein stability and the selection signature found in naked sorghum cultivars, paving the way for innovations in grain breeding.

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Playback language: English
Abstract
This study identifies *GC1* (Glume Coverage 1), encoding an atypical G protein γ subunit, as a major gene negatively regulating sorghum glume coverage. Naturally truncated *GC1* variations accumulate at higher protein levels, affecting patatin-related phospholipase SbpPLAII-1 stability. A strong positive selection signature around *GC1* is found in naked sorghum cultivars. The findings reveal a crucial domestication event via subtle glume development regulation by *GC1* C-terminus variation, establishing a strategy for future naked grain breeding.
Publisher
Nature Communications
Published On
Feb 25, 2022
Authors
Peng Xie, Sanyuan Tang, Chengxuan Chen, Huili Zhang, Feifei Yu, Chao Li, Huimin Wei, Yi Sui, Chuanyin Wu, Xianmin Diao, Yaorong Wu, Qi Xie
Tags
sorghum
GC1
glume coverage
genetic variation
breeding strategy
protein stability
domestication

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