Natural alleles of GLA for grain length and awn development were differently domesticated in rice subspecies japonica and indica.

ABSTRACT: Rice (Oryza sativa L.) cultivars harbour morphological and physiological traits different from those of wild rice (O. rufipogon Griff.), but the molecular mechanisms underlying domestication remain controversial. Here, we show that awn and long grain traits in the near-isogenic NIL-GLA are separately controlled by variations within the GLA (Grain Length and Awn Development) gene, a new allele of GAD1/RAE2, which encodes one member of the EFPL (epidermal patterning factor-like protein) family. Haplotype analyses and transgenic studies revealed that InDel1 (variation for grain length, VGL) in the promoter region of GLA (GLA^VGL ) increases grain length by promoting transcription of GLA. Absence of InDel3 (variation for awn formation, VA) in the coding region (CDS) of GLA (GLA^v

SUBMITTER: Zhang Y 

PROVIDER: S-EPMC6662114 | biostudies-literature | 2019 Aug

REPOSITORIES: biostudies-literature