VIN3 — Brassica oleracea var. botrytis

Summary

BoVIN3, encoded by BOLND125_C03P015380.1_BOLND125_V1 on chromosome 3 of cauliflower (Brassica oleracea var. botrytis), is a member of the VIN3-like protein family, containing VIN3-like_C and Oberon-like_PHD domains. The gene product has DNA-binding transcription factor activity and is associated with transcription corepressor and protein phosphorylated amino acid binding. BoVIN3 is associated with epigenetic regulation of gene expression, including epigenetic programming in the endosperm and downregulation of gene expression. It is linked to responses to cold, short-day flowering, hypoxia, and brassinosteroid-mediated signaling, as well as inflorescence development and regulation of flower development. The protein localizes to the nucleus, chromatin silencing complex, nuclear speck, and other cellular compartments. BoVIN3 is associated with agronomically important traits including flowering time, vernalization response, drought tolerance, seed germination, root morphology, nitrate uptake, and leaf composition. Studies of related genes in other species link the family to flowering and organ size.