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Author		Sun S., Wang L., Mao H., Shao L., Li X., Xiao J., Ouyang Y., Zhang Q.
Title		A G-protein pathway determines grain size.in rice.
Abstract: 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.
Journal		Nat Commun
Country		China
Volume		9(1)
Pages		851
Year		2018
PubMed ID		29487318
PubMed Central ID		5829277
DOI		10.1038/s41467-018-03141-y
URL		-
Relation
Gene		D1 DEP1 GGC2 LK3 RGB1
INSD		-
Strain	Wild Core Collection	-
	Induced Mutation Lines(NIG Collection)	-
	Sterile Seed Strain	-
	Lethal Embryo Mutantion Strain	-
	Stages in Each Organ - Muant Lines (Gene)	-
	Cultivated Varieties(NIG Collection)	-
Stages in Each Organ		-