I57 — Hordeum vulgare subsp. vulgare

Summary

HORVU.MOREX.R3.5HG0470030 (HvI57) on barley chromosome 5H encodes a thiolase family protein with acetyl-CoA C-acetyltransferase (EC 2.3.1.9) and 3-ketothiolase activity. The gene is associated with citrate secretion, glyoxysome organization, fatty acid beta-oxidation, jasmonic acid anabolism, green leaf volatile biosynthetic process, and upregulation of abscisic acid mediated signaling. It has been linked to acid soil tolerance, aluminum tolerance, manganese concentration, leaf chlorosis, photosynthetic rate, and grain yield. Additional associations include stomatal opening, potassium transport, seed yield, root length, lipid mobilization, and embryo development ending in seed dormancy. The product localizes to plastids, mitochondria, the ER, and plant-type vacuoles, and participates in the mevalonate pathway and secondary metabolism. Studies of related genes in other species link the family to potassium channel activity and guard cell ion flux.