Transcription factor that binds specifically to the DNA sequence 5'-AACAAAC-3' (PubMed:19170933). Acts as a positive regulator of hypersensitive cell death (PubMed:10571865, PubMed:12119395). Acts as a positive regulator of salicylic acid synthesis (PubMed:16730712). Regulates very-long-chain fatty acid biosynthesis (PubMed:18326828). Acts cooperatively with BZR2 to promote expression of a subset of brassinosteroids target genes (PubMed:19170933). Transcriptional activity and hypersensitive response control negatively regulated by PLA2-ALPHA (PubMed:20696912). Involved in the regulation of abscisic acid (ABA) signaling (PubMed:22814374). Increased levels of MYB30 can accelerate flowering both in long and short days through the regulation of FT (PubMed:24587042). Interacts with MIEL1 (PubMed:23403577). Interacts with BZR2 (PubMed:19170933). Interacts with PLA2-ALPHA (PubMed:20696912). Expressed in vascular tissues of leaves, hypocotyl and roots. Expressed in 2-week-old seedlings, in the early stages of development. Up-regulated during hypersensitive response, but no expression detected during compatible interaction with pathogens (PubMed:10571865). Specifically induced in the inoculated zone 4 hours post pathogen infection (PubMed:20696912). Up-regulated by jasmonic acid and salicylic acid (PubMed:16463103, PubMed:16730712). Transcriptionally regulated by BZR2 (PubMed:19170933). The N-terminus (11-116) contains a fully active minimal DNA-binding domain. Ubiquitinated by MIEL1. Sumoylated at Lys-283 by SIZ1. Stabilizes MYB30 and is required for its function in ABA signaling. Simultaneous S-nitrosylation at Cys-49 and CYS-53 negatively regulates DNA-binding activity. Altered brassinosteroids response phenotypes (PubMed:19170933). Hypersensitivity to ABA during germination and seedling growth (PubMed:22814374). An article reported regulation of transcriptional activity and hypersensitive response control by Xanthomonas type III effector XopD; however, this paper was later retracted.