APX — Glycine max

Summary

GmAPX (GLYMA_11G150243V4) on soybean chromosome 11 encodes a haem peroxidase with L-ascorbate peroxidase activity, also annotated for p-coumarate 3-hydroxylase activity, siRNA and miRNA binding, RNA endonuclease activity, and protein kinase activity. The gene is associated with the ascorbate-glutathione cycle, xanthophyll cycle, chlororespiration, cell wall repair, and positive regulation of stomatal complex development. It localises to the peroxisome membrane, chloroplast thylakoid membrane, stress granule, and plasmodesma. GmAPX is linked to numerous agronomic traits including relative chlorophyll content, net photosynthetic rate, water use efficiency, bacterial blight disease resistance, submergence tolerance, seed viability, biomass yield, days to flowering, and linolenic acid content. It is also associated with drought tolerance, heat stress memory, photoprotection, and H2O2 homeostasis. Studies of related genes in other species connect the family to oxidative stress tolerance, heat tolerance, root development, and pathogen defense.