POX5.1 — Triticum aestivum

Summary

TRAESCS2A03G107600, designated TaPOX5.1 on bread wheat chromosome 2A, encodes a secretory haem peroxidase (EC 1.11.1.7) with lactoperoxidase activity, heme binding and metal binding. The product is localised to the plant-type cell wall and extracellular space. TaPOX5.1 is associated with responses to submergence, salinity, and salicylic acid signalling, as well as regulation of seed germination and coleoptile growth under submergence. It is associated with numerous agronomic traits including canopy temperature depression, drought susceptibility index, leaf moisture content, flag leaf area, relative chlorophyll content, spike weight, grain moisture content, starch digestibility, abscisic acid content, and root fresh weight. Related genes in other species are linked to drought sensitivity and lateral root length.