RDR6 — Brassica oleracea var. botrytis

Summary

BoRDR6 (BOLND125_C04P036210.1_BOLND125_V1) on cauliflower chromosome 4 encodes an RNA-dependent RNA polymerase (RdRP) with RNA-binding domains, placing it in the RDR6 family. The gene is associated with post-transcriptional gene silencing, including trans-acting siRNA processing, virus-induced PTGS, and antiviral responses. It has been linked to vegetative phase change, shoot apical meristem maintenance, carpel and pistil development, and pollen recognition. Associations with vitamin A, vitamin E, chlorophyll, and wax anabolism, as well as heat acclimation and response to heat, have been noted. Traits connected to BoRDR6 include viral disease response, leaf morphology, chlorophyll and anthocyanin content, and abiotic stress response. The protein localises to the cytoplasm, nucleus, endoplasmic reticulum, stress granules, and the RNA-dependent RNA polymerase complex. Studies of related genes in other species link the family to leaf polarity, fertility, seed dormancy, and antiviral immunity.