PAP1 — Brassica oleracea var. botrytis

Summary

BoPAP1, located on chromosome 8 of cauliflower (Brassica oleracea var. botrytis), encodes a purple acid phosphatase (PAP) family protein with phosphoenolpyruvate phosphatase, acid phosphatase, and protein phosphatase activities, and binds ferric iron, manganese, and zinc. The gene is associated with pigmentation, regulation of anthocyanin and flavonoid biosynthesis, cellular response to phosphate starvation, auxin and brassinosteroid signaling, and response to cold. It is linked to anthocyanin content, leaf vein morphology, abnormal leaf venation with reduced vein number, and premature senescence with leaf cell death. The product localizes to the vacuolar lumen, plant-type cell wall, extracellular region, and plasma membrane. Studies of related genes in other species connect the family to anthocyanin accumulation, flavonoid and phenylpropanoid biosynthesis, and antioxidant capacity.