TaDA1, a conserved negative regulator of kernel size, has an additive effect with TaGW2 in common wheat (Triticum aestivum L.).

ABSTRACT: Kernel size is an important trait determining cereal yields. In this study, we cloned and characterized TaDA1, a conserved negative regulator of kernel size in wheat (Triticum aestivum). The overexpression of TaDA1 decreased the size and weight of wheat kernels, while its down-regulation using RNA interference (RNAi) had the opposite effect. Three TaDA1-A haplotypes were identified in Chinese wheat core collections, and a haplotype association analysis showed that TaDA1-A-HapI was significantly correlated with the production of larger kernels and higher kernel weights in modern Chinese cultivars. The haplotype effect resulted from a difference in TaDA1-A expression levels between genotypes, with TaDA1-A-HapI resulting in lower TaDA1-A expression levels. This favourable haplotype was found

SUBMITTER: Liu H 

PROVIDER: S-EPMC7152612 | biostudies-literature | 2020 May

REPOSITORIES: biostudies-literature