OsGRETCHENHAGEN3-2 modulates rice seed storability via accumulation of abscisic acid and protective substances.

ABSTRACT: Seed storability largely determines the vigor of seeds during storage and is significant in agriculture and ecology. However, the underlying genetic basis remains unclear. In the present study, we report the cloning and characterization of the rice (Oryza sativa) indole-3-acetic acid (IAA)-amido synthetase gene GRETCHEN HAGEN3-2 (OsGH3-2) associated with seed storability. OsGH3-2 was identified by performing a genome-wide association study in rice germplasms with linkage mapping in chromosome substitution segment lines, contributing to the wide variation of seed viability in the populations after long periods of storage and artificial ageing. OsGH3-2 was dominantly expressed in the developing seeds and catalyzed IAA conjugation to amino acids, forming inactive auxin. Transgenic overexpress

SUBMITTER: Yuan Z 

PROVIDER: S-EPMC8154041 | biostudies-literature | 2021 May

REPOSITORIES: biostudies-literature