DRB4 — Brassica oleracea var. botrytis

Summary

BoDRB4, located on cauliflower chromosome 8, encodes a double-stranded RNA-binding protein containing dsRBD domains and is annotated with ribonuclease III activity, dsRNA binding, miRNA binding, and identical protein binding. The gene is associated with RNA processing, including pre-miRNA processing, ta-siRNA processing, LsiRNA processing, and RNA VIGS, as well as gene silencing by miRNA-mediated mRNA cleavage and virus-induced PTGS. It is linked to vegetative phase change, leaf proximal/distal pattern formation, phloem or xylem histogenesis, and leaf vascular tissue pattern formation. BoDRB4 is associated with traits such as leaf margin morphology, leaf vein morphology, leaf size, flowering time, sulfur sensitivity, viral disease response, osmotic response sensitivity, root morphology, and anthocyanin content. The protein localizes to the nucleus, cytosol, D body, and nuclear body. Related genes in other species link the family to antiviral defense, transgenerational insect resistance, thermomorphogenesis, and root development.