Plant Genetic Engineering Laboratory, School of Agriculture and Food Sciences, University of Queensland, Brisbane 4072, Australia.
Trends Plant Sci. 2012 Oct;17(10):563-8. doi: 10.1016/j.tplants.2012.06.002. Epub 2012 Jun 28.
Recently, two important yield quantitative trait loci (QTLs), GS3 and DEP1, have been cloned in rice (Oryza sativa). Although their relationship has not been established in the 'rice literature', a recent report identified them as heterotrimeric G protein γ subunits. This identification has profound consequences for our current understanding of both QTLs and the plant G protein signaling network and this opinion article discusses how manipulation of G protein signaling may lead to yield improvements in rice and other crop species. Finally, a mechanistic model to explain the seemingly conflicting phenotypes produced by different GS3 and DEP1 alleles is proposed.
最近，两个重要的产量数量性状位点（QTL），GS3 和 DEP1，在水稻（Oryza sativa）中被克隆。尽管它们之间的关系在“水稻文献”中尚未建立，但最近的一份报告将它们鉴定为异三聚体 G 蛋白γ亚基。这一鉴定对我们目前对 QTL 和植物 G 蛋白信号网络的理解产生了深远的影响，本观点文章讨论了如何操纵 G 蛋白信号可能导致水稻和其他作物物种产量的提高。最后，提出了一个机制模型来解释不同的 GS3 和 DEP1 等位基因产生的看似矛盾的表型。
