TFIIB — Brassica oleracea var. botrytis

Summary

BoTFIIB, located on chromosome 8 of cauliflower (Brassica oleracea var. botrytis), encodes a protein with TFIIB_cyclin and Cyclin-like_sf domains. The protein possesses DNA-binding transcription factor activity, binds TATA-box-binding protein, double-stranded DNA, and zinc, and is associated with transcription preinitiation complex assembly, RNA polymerase III transcription, and DNA-templated transcription initiation. BoTFIIB is associated with numerous developmental and stress-related traits, including inflorescence length and development, cotyledon morphogenesis, leaf and root development, trichome morphogenesis, endosperm development, and pollen tube growth and guidance. It is also linked to responses to viruses, sucrose, water stress, low temperature, oxidative stress, and abscisic acid, as well as yield, chlorophyll content, plant height, flowering time, and disease tolerance traits such as downy mildew, powdery mildew, and aphid response. Studies of related genes in other species connect the family to pollen tube growth, organ size, and drought, salt, cold, and hypoxia stress responses.