BUS1 — Brassica oleracea

Summary

BoBUS1 (BOLC102_C05P014760.1) on cabbage chromosome 5 encodes a cytochrome P450 enzyme with tryptophan N-monooxygenase, tyrosine N-hydroxylase, isoleucine N-monooxygenase, valine N-monooxygenase, L-phenylalanine N-monooxygenase, fatty acid in-chain hydroxylase, and general monooxygenase activities. This gene is associated with glucosinolate and camalexin biosynthesis, auxin (IAA) production, cyanogenic glycoside and dhurrin metabolism, and defense responses including induced systemic resistance, callose deposition, and response to insects and oomycetes. It is linked to pollen exine formation, anther development, tropism, and glutathione biosynthesis. Localized to the endoplasmic reticulum and nucleus, BoBUS1 is associated with stem thickness, leaf width, root branching, shoot branching, apical dominance, sugar and amino acid content, carotenoid biosynthesis, and photooxidative stress tolerance. Related genes in other species link the family to aliphatic glucosinolate content and plant morphology.