KT1 — Glycine max

Summary

GmKT1 (GLYMA_05G010600V4) on soybean chromosome 5 encodes a voltage-sensitive potassium channel with ATPase inhibitor activity, calcium-dependent protein serine/threonine phosphatase activity, and calcium ion binding. It is associated with potassium ion import across the plasma membrane, regulation of membrane potential, cellular potassium ion homeostasis, and response to calcium ions. The gene is linked to numerous agronomically important traits including yield, photosynthetic rate, chlorophyll content, plant height, root length, root mass density, seed growth and development, days to flowering, germination rate, leaf chlorosis, and responses to salt, alkali, low temperature, water stress, and nutrient sensitivities. It localizes to the tonoplast, ER membrane, plasmodesma, plastid, and mitochondria. Studies of related genes in other species connect this family to potassium acquisition, low potassium tolerance, and salt tolerance.