Mutation of RGG2, which encodes a type B heterotrimeric G protein γ subunit, increases grain size and yield production in rice.

ABSTRACT: Heterotrimeric G proteins, which consist of G_α , G_β and G_γ subunits, function as molecular switches that regulate a wide range of developmental processes in plants. In this study, we characterised the function of rice RGG2, which encodes a type B G_γ subunit, in regulating grain size and yield production. The expression levels of RGG2 were significantly higher than those of other rice G_γ -encoding genes in all tissues tested, suggesting that RGG2 plays essential roles in rice growth and development. By regulating cell expansion, overexpression of RGG2 in Nipponbare (NIP) led to reduced plant height and decreased grain size. By contrast, two mutants generated by the clustered, regularly interspaced, short palindromic repeat (CRISPR)/CRIS

SUBMITTER: Miao J 

PROVIDER: S-EPMC6381795 | biostudies-literature | 2019 Mar

REPOSITORIES: biostudies-literature