HAK1 — Hordeum vulgare subsp. vulgare

Summary

HvHAK1 on barley chromosome 3H encodes a protein with leucine-rich repeats and serine/threonine kinase activity, classified as EC 2.7.11.1. It exhibits histone H2AS1 kinase, steroid binding, SNARE binding, and signaling receptor activities. The gene is associated with potassium uptake, regulation of innate immune response, floral organ development, megasporogenesis, microsporogenesis, anther wall tapetum development, and regulation of stomatal complex development. It is linked to brassinosteroid sensitivity, salt tolerance, defense response, herbivore defense, shade avoidance, and root elongation. The protein localizes to the plasma membrane, endosome, plasmodesma, nucleus, and cytosol. Studies of related genes in other species connect the family to potassium acquisition, sodium uptake, grain yield, drought tolerance, pollen fertility, and germination rate.