BIK1 — Brassica oleracea var. botrytis

Summary

BoBIK1 (BOLND125_C04P073060.1_BOLND125_V1) on cauliflower chromosome 4 encodes a plant serine/threonine protein kinase with multiple annotated molecular functions including guanylyl cyclase activity, NAD(P)H oxidase H2O2-forming activity, peptide receptor activity, transmembrane receptor protein tyrosine and serine/threonine kinase activities, and steroid, SNARE, and histone H2AS1 kinase binding. The gene is associated with pattern-triggered immunity signalling, defence response to bacteria, reactive oxygen species metabolism, callose deposition, autophagy regulation, and anther wall tapetum differentiation. It has been linked to numerous traits including bacterial blight disease resistance, brassinosteroid and gibberellin content, lignin biosynthesis, phosphorus uptake, aluminium and temperature stress responses, aphid and nematode responses, root and shoot elongation, leaf rolling, and phototropism. The protein localises to the plasma membrane, endosome, plastid, mitochondria, plasmodesma, and nucleolus. Studies of related genes in other species link the family to flagellin perception, defence responses, ROS burst, and brassinosteroid sensitivity.