Gene Details:

• MSU gene ID: LOC_Os03g04050
• RAPdb gene ID: Os03g0132800
• Gene Symbol: OsBSK1-1
• Genome: MSU7 ,  IRGSP-1.0
• Species: Oryza sativa

Functional Descriptions:

• We showed that knockout mutants of OsBSK1-1 are less sensitive to BR and exhibit a pleiotropic phenotype, including lower plant height, less tiller number and shortened grain length, whereas transgenic plants overexpressing a gain-of-function dominant mutant form of OsBSK1-1 (OsBSK1-1A295V) are hypersensitive to BR, and exhibit some enhanced BR-responsive phenotypes.
• Together, our results suggest that OsBSK1-1 may serve as a scaffold protein directly bridging OsBRI1 and OsGSK2 to positively regulate BR signalling, thus affecting plant architecture and grain size in rice.
• We found that OsBSK1-1 physically interacts with the BR receptor BRASSINOSTEROID INSENSITIVE1 (OsBRI1), and GLYCOGEN SYNTHASE KINASE2 (OsGSK2), a downstream component crucial for BR signalling.
• Moreover, we showed that OsBSK1-1 can be phosphorylated by OsBRI1 and can inhibit OsGSK2-mediated phosphorylation of BRASSINOSTEROID RESISTANT1 (OsBZR1).

Function-related keywords:

• grain ,  grain-length ,  grain-size ,  brassinosteroid ,  BR ,  Brassinosteroid ,  tiller ,  architecture ,  plant-height ,  plant-architecture ,  tiller-number

Literature:

• OsBSK1-2, an Orthologous of AtBSK1, Is Involved in Rice Immunity .  DOI:  10.3389/fpls.2017.00908 ;  PMID:  28680425
• BRASSINOSTEROID-SIGNALING KINASE1-1, a positive regulator of brassinosteroid signalling, modulates plant architecture and grain size in rice .  DOI:  10.1093/jxb/erac429 ;  PMID:  36346128

Related News:

Gene Resources:

• NCBI ID:
• UniProt accessions:

Sequences: