FRK1 — Arabidopsis thaliana

Summary

AT2G19190, designated FRK1 (FLG22-induced receptor-like kinase 1) in Arabidopsis thaliana, encodes a leucine-rich repeat receptor-like kinase (LRR-RLK) with malectin-like and protein kinase domains, exhibiting protein serine/threonine kinase activity and histone H2AS1 kinase activity. The gene is associated with immune activation, induced systemic resistance, the MAPK cascade, calcium ion import and signaling, stomatal closure, metabolic burst, and secretion. It has been linked to pigment, hormone, and phenylpropanoid anabolism, as well as nonsense-mediated mRNA decay, somatic embryogenesis, regeneration, cellular homeostasis, and memory. Associations with leaf senescence, seed maturation, and seed dormancy have been noted. The protein localizes to the membrane and extracellular region. Related genes in other species are linked to drought tolerance.