Knock-Down the Expression of Brassinosteroid Receptor TaBRI1 Reduces Photosynthesis, Tolerance to High Light and High Temperature Stresses and Grain Yield in Wheat.

ABSTRACT: Brassinosteroid (BR)-deficient or -insensitive mutants exhibited altered plant architecture with the potential to impact yield, the underlying physiological and molecular mechanisms are still to be explored. In this study, we cloned three BR receptor homologous genes TaBRI1-A1, -B1 and -D1 from hexaploid wheat (Triticum estivum L.) and further isolated the TaBRI1-A1, TaBRI1-D1 deletion mutants from the ion beam-induced mutants of variety Xiaoyan81, TaBRI1-A1 and TaBRI1-D1 in which the expression of total receptor TaBRI1 was significantly decreased. The TaBRI1 knock-down mutants exhibited relatively erect leaves and a significant decrease in the 1000-grain weight. Further studies showed that TaBRI1 knock-down mutants show

SUBMITTER: Fang J 

PROVIDER: S-EPMC7411796 | biostudies-literature | 2020 Jul

REPOSITORIES: biostudies-literature