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The team of academician Zhongkang discovers a new mechanism for regulating rice grain shape |
Recently, the team of Academician of the Chinese Academy of Sciences and the researcher of the Institute of Botany of the Chinese Academy of Sciences, the team of Zhang Qifa, the academician of the Chinese Academy of Sciences and the professor of Huazhong Agricultural University, and the team of Fu Xiangdong, a researcher of the Institute of Genetics and Development of the Chinese Academy of Sciences, found that the E3 ubiquitin ligase CLG1 can pan The G protein γ subunit GS3 is vegetarianized, and it mediates the degradation of GS3 through the endosomal pathway, changes the G protein signal, and regulates the length of rice grains
.
Related research results were published in "Molecular Plants"
.
Rice grain shape is one of the important factors affecting its yield, and it is also an important commodity trait
.
People in different regions have different preferences for the appearance of rice grains, so regulating the aspect ratio of rice grains has become one of the breeding goals
.
The T-DNA insertion mutant clg1-1 (Chang Li Geng1-1) previously obtained by researchers has a long-grain phenotype
.
Map-based cloning and transcription analysis revealed that CLG1 encodes an E3 ubiquitin ligase, and CLG1 expression in clg1-1 was significantly increased
.
By analyzing the genetic sequence polymorphism of different varieties, the researchers found that the Arg163Ser change of CLG1 protein was significantly related to the grain length traits of the core collection, and CLG1163S had higher ligase activity
.
These results reveal a new mechanism of endosomal degradation pathway regulating grain shape, and the CLG1-GS3 module provides new genetic resources for rice molecular design and breeding
.
The first author of the paper for the Chinese Academy of Sciences Botany Yang Wensi Ph.
D.
, corresponding author was inspired by Zhang and the Chinese Academy of Botany researcher Xu Yun far
.
Related work was funded by the National Key Research and Development Program and China's Modern Agricultural Industrial Technology System Project
.
Chinese Academy of Sciences
Related paper information: https://doi.
org/10.
https://doi.
org/10.
1016/j.
molp.
2021.
06.
027