PGIP1 — Brassica napus

Summary

BnPGIP1 (PGIP1) on chromosome C09 of oilseed rape (Brassica napus) encodes a polygalacturonase inhibitor, a leucine-rich repeat protein with polygalacturonase inhibitor activity and enzyme inhibitor activity, and is also associated with receptor serine/threonine kinase binding and ATP binding. The gene is associated with defense response, signal transduction, polysaccharide metabolism, camalexin anabolism, regulation of cell growth, regulation of stomatal complex development, and specification of floral organ number. It localizes to the plant-type cell wall, apoplast, ER membrane, Golgi complex, plasmodesma, and secretory vesicle. BnPGIP1 is associated with root length, cyst nematode resistance, low pH tolerance, and aluminum tolerance. Studies of related genes in other species link the family to resistance to Botrytis cinerea and Fusarium head blight, as well as oligogalacturonide-mediated defense signaling.