KT1 — Glycine max

Summary

GLYMA_17G118300V4, designated GmKT1 (also known as GmAKT1), encodes a voltage-sensitive potassium channel protein containing ankyrin repeats, a cyclic nucleotide-binding domain, and a KHA domain. The product exhibits ATPase inhibitor activity, calcium-dependent protein serine/threonine phosphatase activity, and kinase binding. GmKT1 is associated with potassium ion import across the plasma membrane, regulation of membrane potential, cellular potassium ion homeostasis, and response to calcium ions. It localizes to the tonoplast, endoplasmic reticulum, plasmodesmata, plastid, and mitochondria. The gene is linked to numerous agronomic traits including yield, photosynthetic rate, transpiration rate, chlorophyll content, root length, plant height, seed development, germination rate, days to flowering, and responses to salt, alkali, water stress, low temperature, and nutrient sensitivity. Studies of related genes in other species connect the family to potassium acquisition, salt tolerance, and pollen tube growth.