PI3K — Brassica oleracea

Summary

BoPI3K, the cabbage gene on chromosome 4, encodes a phosphatidylinositol 3-kinase of the VPS34 class III type, possessing protein serine/threonine kinase activity, ATP binding, and protein binding functions. It is associated with phosphatidylinositol 3-phosphate biosynthesis, macroautophagy, pexophagy, endocytosis, secretion, late endosome-to-vacuole transport, microgametogenesis, the MAPK cascade, activation of defence response to bacteria, regulation of stomatal closure, response to salt and salicylate, and reactive oxygen species metabolism. The gene is linked to leaf senescence, pollen germination and development, proline accumulation, salt stress response, root hair growth, heat stress recovery, and cellular homeostasis. Studies of related genes in other species connect the family to plant growth and development, disease resistance, stomatal closure, and abnormal pollen development.