GGT1 — Hordeum vulgare subsp. vulgare

Summary

HORVU.MOREX.R3.5HG0481320 (HvGGT1) on barley chromosome 5H encodes a pyridoxal phosphate-dependent aminotransferase with glutamate-glyoxylate, alanine-glyoxylate, nicotianamine, L-alanine:2-oxoglutarate and L-tyrosine-2-oxoglutarate transaminase activities, classified as EC 2.6.1.2. The gene is associated with photorespiration, L-alanine and tyrosine breakdown, ethylene anabolism, and response to cadmium and hypoxia. In barley, HvGGT1 has been linked to pre-harvest sprouting and hypoxia sensitivity. The gene is also associated with grain filling period, photosynthetic rate, seed dormancy, seed yield, flowering time, plant size, trichome development, disease resistance, senescence, and ABA sensitivity. The product localises to multiple compartments including the amyloplast membrane, chloroplast stroma, mitochondria, cytosol and nucleus.