SAG12 — Brassica oleracea var. botrytis

Summary

BoSAG12 (BOLND125_C02P058590.1) on cauliflower chromosome 2 encodes a papain-like cysteine peptidase, a member of the peptidase C1A family with cysteine-type peptidase activity and thiol endopeptidase activity. The gene is associated with programmed cell death involved in cell development, floral organ senescence, and leaf senescence, as well as responses to abscisic acid, ethylene, auxin, cytokinin, gibberellin, glucose, fructose, and sucrose. It is linked to defence response to fungi, response to UV-B, regeneration, and proteolysis. The encoded protein localises to senescence-associated vacuoles, lysosomes, protein storage vacuoles, and the ER lumen. Associations with agronomic traits include drought resistance, flooding tolerance, seed yield, nitrogen remobilization, and seed nitrogen content. Studies of related genes in other species link the family to developmental senescence, cadmium-induced programmed cell death, and traits including leaf chlorosis, biomass yield, and chlorophyll content.