HMG1 — Brassica oleracea var. botrytis

Summary

BoHMG1 (HMG1) on chromosome 8 of cauliflower (Brassica oleracea var. botrytis) encodes a hydroxymethylglutaryl-CoA reductase (NADPH) with the characteristic HMG-CoA reductase domains. The gene is associated with isoprenoid, sterol, triterpenoid and saponin biosynthesis, as well as C4 photosynthesis, abscission, anther development, and responses to jasmonic acid and absence of light. Its product localises to plastid, peroxisome, mitochondrial, chloroplast and ER membranes. BoHMG1 has been linked to flower colour, male fertility, plant growth, senescence, cardenolide and phytosterol production, and mevalonate synthesis. Related genes in other species are linked to mevalonate pathway regulation, phytosterol content, essential oil production, and developmental processes including root elongation, dwarfism, sterility and rapid leaf senescence.