SR1 — Brassica oleracea var. botrytis

Summary

BoSR1 (CAMTA3) on cauliflower chromosome 4 encodes a transcriptional co-regulator with calmodulin-binding, sequence-specific DNA-binding and protein-binding activities, containing CG-1, IQ motif, ankyrin repeat and P-loop NTPase domains. The gene is associated with upregulation of defense response to insect, extracellular ATP signaling, cellular response to cold, leaf senescence, regulation of transcription by RNA polymerase II, defence response to bacteria, defence response to fungi, and DNA-dependent transcription. Its product localises to both cytoplasm and nucleus. Associations with drought tolerance, small plants, elevated salicylic acid biosynthesis, high humidity response, elevated SA pathway expression, small stature, pathogen resistance, pollen tube growth, immunity, freezing tolerance, submergence tolerance, senescence, stress response, general stress response, ABA response, cold tolerance, biotic defense response, immunity against pathogenic microbes, alternative splicing, hyponastic movement, immune response, salt stress response, cold response, systemic acquired resistance, plant immune response, impaired cold-induced immunity, compromised bacterial resistance, and basal disease resistance have been reported. Studies of related genes in other species link the family to cold stress tolerance, disease resistance, salicylic acid levels, and impaired cold-induced immunity.