RDR6 — Brassica oleracea

Summary

BoRDR6 (BOLC102_C01P032950.1) on cabbage chromosome 1 encodes an RNA-dependent RNA polymerase with RNA-directed RNA polymerase (RdRP) activity, RNA binding capacity, and ubiquitin ligase binding. The gene is associated with post-transcriptional gene silencing, trans-acting siRNA processing, virus-induced PTGS, and RNA breakdown. It is linked to vegetative phase change, shoot apical meristem maintenance, carpel and pistil development, head development, morphogenesis, chlorophyll and wax anabolism, and pollen recognition. Associations include leaf width and morphology, anthocyanin content, viral disease response, abiotic stress response, and leaf composition. The protein localises to the cytoplasm, nucleus, endoplasmic reticulum, stress granules, and the RNA-directed RNA polymerase complex. Studies of related genes in other species link the family to disease resistance, self-incompatibility, antiviral RNA silencing, and narrow leaf phenotypes.