OsMAPKKK5 affects brassinosteroid signal transduction via phosphorylating OsBSK1-1 and regulates rice plant architecture and yield.

ABSTRACT: Improving plant architecture and increasing yields are the main goals of rice breeders. However, yield is a complex trait influenced by many yield-related traits. Identifying and characterizing important genes in the coordinated network regulating complex rice traits and their interactions is conducive to cultivating high-yielding rice varieties. In this study, we determined that the interaction between mitogen-activated protein kinase kinase kinase5 (OsMAPKKK5) and brassinosteroid-signalling kinase1-1 (OsBSK1-1) regulates yield-related traits in rice. Specifically, OsMAPKKK5 phosphorylates OsBSK1-1, which enhances the interaction between these two proteins, but adversely affects the OsBSK1-1-OsBRI1 (BR insensitive1) and OsBSK1-1-OsPPKL1 (protein phosphatase with two Kelch-like domains) in

SUBMITTER: Yan P 

PROVIDER: S-EPMC12018843 | biostudies-literature | 2025 May

REPOSITORIES: biostudies-literature