MAPK3 — Brassica juncea

Summary

BJUB08G15360S (MAPK3) on chromosome B08 of Indian mustard (Brassica juncea) encodes a mitogen-activated protein kinase 3, a member of the MAPK family with a protein kinase domain and serine/threonine kinase activity, and has MAPKK activity (EC 2.7.11.24). The gene is associated with diverse biological processes including defence responses to bacteria and fungi, innate immunity, response to wounding, UV-C, cold, and salinity, as well as ABA signalling, cell death, cell division, and intracellular signal transduction. It is linked to root elongation, vegetative structure development, and growth and developmental processes. The encoded protein localises to both the cytoplasm and nucleus. MAPK3 is also associated with water use efficiency and drought tolerance. Studies of related genes in other species link the family to low temperature stress response.