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Effects of GS3 and GL3.1 for Grain Size Editing by CRISPR/Cas9 in Rice

文献类型： 外文期刊

作者： Chen Yuyu 1 ; Zhu Aike 4 ; Xue Pao 1 ; Wen Xiaoxia 1 ; Cao Yongrun 1 ; Wang Beifang 1 ; Zhang Yue 1 ; Shah, Liaqat 1 ; Cheng 1 ;

作者机构： 1.China Natl Rice Res Inst, State Key Lab Rice Biol, Hangzhou 311401, Peoples R China

2.China Natl Rice Res Inst, Chinese Natl Ctr Rice Improvement, Hangzhou 311401, Peoples R China

3.Huazhong Agr Univ, Natl Key Lab Crop Genet Improvement, Wuhan 430070, Peoples R China

4.Nanchong Acad Agr Sci, Nanchong 637000, Peoples R China

关键词： rice; GS3; GL3.1; grain size; grain quality; grain yield; CRISPR/Cas9

期刊名称：RICE SCIENCE （ 影响因子：3.333； 五年影响因子：4.226 ）

ISSN： 1672-6308

年卷期： 2020 年 27 卷 5 期

页码：

收录情况： SCI

摘要： Grain size is one of key agronomic traits associated with grain yield and grain quality. Both major quantitative trait loci GS3 and GL3.1 play a predominant role in negative regulation of grain size. In this study, a CRISPR/Cas9-mediated multiplex genome editing system was used to simultaneously edit GS3 and GL3.1 in a typical japonica rice Nipponbare. In T-1 generation, we found that gs3 formed slender grain with lower chalkiness percentage, while gs3g13.1 produced larger grain with higher chalkiness percentage. In terms of other agronomic traits, flag leaf size, grain number and grain yield of both gs3 and gs3g13.1 mutants were affected. It is noteworthy that gs3 and gs3g13.1 mutants both led to dramatical reduction of grain number, thereby decreased grain yield. In conclusion, these results indicated that knockout of GS3 and GL3.1 could rapidly improve grain size, but probably have some negative influences on grain quality and grain yield.

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