Arabidopsis CALMODULIN-BINDING PROTEIN 60b plays dual roles in plant immunity.

ABSTRACT: Arabidopsis SYSTEMIC ACQUIRED RESISTANCE DEFICIENT 1 (SARD1) and CALMODULIN-BINDING PROTEIN 60g (CBP60g) are two master transcription factors that regulate many defense-related genes in plant immunity. They are required for immunity downstream of the receptor-like protein SUPPRESSOR OF NPR1-1, CONSTITUTIVE 2 (SNC2). Constitutive defense responses in the gain-of-function autoimmune snc2-1D mutant are modestly affected in either sard1 or cbp60g single mutants but completely suppressed in the sard1 cbp60g double mutant. Here we report that CBP60b, another member of the CBP60 family, also functions as a positive regulator of SNC2-mediated immunity. Loss-of-function mutations of CBP60b suppress the constitutive expression of SARD1 and enhanced di

SUBMITTER: Huang W 

PROVIDER: S-EPMC8577148 | biostudies-literature | 2021 Nov

REPOSITORIES: biostudies-literature