DRB1 — Beta vulgaris subsp. vulgaris

Summary

BvDRB1 (BVRB_5G123360) on sugar beet chromosome Bvchr5_un.sca002 encodes a DRBM domain-containing protein with dsRNA binding, ribonuclease III, RNA methyltransferase, and protein phosphatase activities. It is associated with pri-miRNA and pre-miRNA processing, long siRNA processing, RNA virus-induced gene silencing, and gene silencing by miRNA-directed mRNA cleavage. The gene is linked to regulation of seed maturation, adaxial/abaxial pattern formation, leaf proximal/distal pattern formation, and shoot meristem development. Associations include adult leaf morphology, floral organ morphology, inflorescence development, stamen and anther morphology, vegetative vigor, peduncle length, adventitious root number, seed viability, viral and aphid response traits, phosphorus uptake, and UV-B light sensitivity. Studies of related genes in other species connect the DRB family to miRNA production, small RNA stability, photomorphogenesis, root development, cold stress tolerance, and fungal resistance.