BAS — Beta vulgaris subsp. vulgaris

Summary

BvBAS (BVRB_7G177990) on sugar beet chromosome Bvchr7_un.sca005 encodes an oxidosqualene cyclase with multiple annotated activities including marneral, baruol, arabidiol, camelliol C, lupeol, and beta-amyrin synthase activities, as well as mutase activity. The protein contains squalene cyclase and terpenoid cyclase domains. BvBAS is associated with triterpenoid, saponin, and auxin biosynthesis, and with responses to nitric oxide, hydrogen peroxide, fungal molecules, jasmonic acid, and ethylene. It localises to the endoplasmic reticulum membrane, adiposome, plasmodesma, mitochondria, and nucleus. The gene is linked to root length, disease resistance, powdery mildew resistance, penetration resistance, callose deposition, leaf senescence, flowering time, embryogenesis, and cell expansion. Studies of related genes in other species connect the family to nonhost resistance, penetration resistance, lupeol and beta-amyrin synthesis, and cuticular water barrier formation.