KT1 — Oryza sativa Japonica

Summary

OsKT1 (OS08G0466200) on rice chromosome 8 encodes a potassium transporter belonging to the HAK/KUP/KT family, with domains characteristic of K+ transport (K_trans_C, K_trans_N) and annotated molecular functions for both potassium and sodium transporter activity. The gene is associated with potassium and sodium concentration, potassium uptake, and salinity response, including activation of salinity response. It is associated with pollen development and germination, leaf senescence, cellular homeostasis, and glutathione metabolism. Localised to the membrane and plasmalemma, OsKT1 is also associated with grain yield, relative chlorophyll and sucrose content, proline content, drought tolerance, and growth stage. Related genes in other species support the family’s broader roles in ion homeostasis and stress responses.