RLK — Oryza sativa Japonica

Summary

Os02g0640500, designated SIT1 and also known as RLK, encodes a transmembrane receptor protein serine/threonine kinase with lectin domains, exhibiting histidine kinase activity and sugar binding. In rice, SIT1 is associated with salt tolerance and salt sensitivity, ethylene homeostasis, and root epidermal cell responses. The gene is associated with strigolactone anabolism, root system development, auxin transport, and gibberellin biosynthesis. Associations extend to grain yield, plant height, chlorophyll content, drought tolerance and sensitivity, stomatal resistance, and glume opening. The encoded protein localizes to the plasmalemma, extracellular region, nucleus, cytosol, endoplasmic reticulum, mitochondria, and plant-type vacuole. Studies of related genes in other species connect the SIT1 family to reactive oxygen species production, stomatal immunity, and ethylene production.