RGA (BOLND125_C07P033480.1_BOLND125_V1) — Brassica oleracea var. botrytis

Summary

BoRGA (RGA) on cauliflower chromosome 7 encodes a DELLA_N and GRAS domain-containing transcriptional co-regulator, annotated with gibberellin binding, phytochrome binding, blue light photoreceptor activity, and multiple other molecular functions including SMT3 activating enzyme, SUMO-specific endopeptidase, phosphatase, and FAD binding activities. The gene is associated with regulation of gibberellic acid-mediated signalling, inflorescence meristem growth, floral organ morphogenesis, trichome spacing and morphogenesis, detection of light, shade avoidance, systemic acquired resistance, and response to water-immersion restraint stress. It is linked to traits including flower number, fruit set and quality, leaf area, leaf trichome density, root width and epidermal cell length, seedling cotyledon size, copper sensitivity, iron and flavonoid content, total soluble sugar, and endosperm storage protein content. Studies of related genes in other species connect the family to drought tolerance, heat tolerance, clubroot resistance, parthenocarpy, root patterning, and reproductive tissue development.