点击次数：

影响因子：12.14

DOI码：10.1038/s41467-018-03141-y

发表刊物：Nat Commun

关键字：G Protein，Grain size

摘要：Manipulating grain size is an effective strategy for increasing cereal yields. Here we identify a pathway composed of five subunits of the heterotrimeric G proteins that regulate grain length in rice. The Gbeta protein is essential for plant survival and growth. Galpha provides a foundation for grain size expansion. Three Ggamma proteins, DEP1, GGC2 and GS3, antagonistically regulate grain size. DEP1 and GGC2, individually or in combination, increase grain length when in complex with Gbeta. GS3, having no effect on grain size by itself, reduces grain length by competitively interacting with Gbeta. By combining different G-protein variants, we can decrease grain length by up to 35% or increase it by up to 19%, which leads to over 40% decreasing to 28% increasing of grain weight. The wide existence of such a conserved system among angiosperms suggests a possible general predictable approach to manipulating grain/organ sizes.

论文类型：SCI、

学科门类：农学

文献类型：SCI

卷号：9

期号：1

页面范围：851

是否译文：否

发表时间：2018-03-01

收录刊物：SCI