MK1 — Solanum lycopersicum

Summary

SOLYC06G005170.3, designated MK1 or SlMPK3 on tomato chromosome 6, encodes a mitogen-activated protein kinase (MAPK) with serine/threonine and tyrosine kinase activities, ATP binding, and MAPKK activity. In tomato, MK1 is associated with pathogen and wound responses, bacterial wilt resistance, and seedling growth. The gene is linked to diverse biological processes including stilbene anabolism, tryptophan breakdown, RNAi activation, and responses to ether and UV-A. MK1 localises to the cytoplasm and nucleus and is associated with pathways for root elongation, salinity response, and vegetative structure development. Associations with agronomic traits include stay green, canopy temperature, harvest index, leaf chlorophyll content, fruit size, sugar content, water use efficiency, drought tolerance, and disease and nematode resistance. Studies of related genes in other species link the family to mitogen-activated protein kinase activity (EC 2.7.12.2, 2.7.11.24).