The transcription factor BES1 interacts with HSFA1 to promote heat stress resistance of plants

ABSTRACT: Heat stress is a major environmental stress type that can limit plant growth and development. To survive sudden temperature increases, plants utilize the heat shock response, an ancient signaling pathway. Initial results had suggested that a role for brassinosteroids (BRs) in this response. Brassinosteroids are growth-promoting steroid hormones whose activity is mediated by transcription factors of the BES1/BZR1 subfamily. Here, we provide evidence that BES1 can contribute to heat stress signaling. In response to heat, BES1 is activated even in the absence of brassinosteroids, and directly binds to heat shock elements (HSEs), known binding sites of heat shock transcription factors (HSFs). HSFs of the HSFA1-type, can interact with BES1 and facilitate its activity in HSE binding. These find

SUBMITTER: Dr. Pablo Albertos 

PROVIDER: S-SCDT-EMBOJ-2021-108664 | biostudies-other |

REPOSITORIES: biostudies-other