BUS1 — Brassica oleracea var. botrytis

Summary

BoBUS1, also known as BoCYP79F2, BoCYP79F1, and SPS1, is a cytochrome P450 family protein on cauliflower chromosome 5. It encodes a monooxygenase with tryptophan N-monooxygenase, tyrosine N-hydroxylase, and several amino acid N-monooxygenase activities, and is associated with glucosinolate, cyanogenic glycoside, dhurrin, camalexin, and IAA biosynthesis, as well as tryptophan breakdown, lipid hydroxylation, and pollen exine formation. The gene is linked to induced systemic resistance, defense response by callose deposition, response to insects, defense against oomycetes, and anther development. It localizes to the endoplasmic reticulum and nucleus. Associations include shoot branching, apical dominance, root and shoot development, plant growth, glucosinolate profile and content (both short- and long-chain aliphatic), carotenoid biosynthesis, singlet oxygen quenching, and photooxidative stress tolerance. Related genes in other species are linked to aliphatic glucosinolate content and plant morphology.