APX — Solanum lycopersicum

Summary

SOLYC06G005150.3 (SlAPX) encodes a haem peroxidase family protein with L-ascorbate peroxidase activity, also annotated with p-coumarate 3-hydroxylase, siRNA binding, and protein kinase activities. In tomato, SlAPX1 is associated with drought resistance. The gene is linked to numerous agronomic traits including grain yield, fruit diameter and volume, leaf moisture content, stay green trait, chlorophyll content, canopy temperature, seedling height, tiller number, stem thickness, total soluble sugar content, and germination ratio. Associations extend to stress responses such as thermotolerance, excess light stress tolerance, oxidative stress resistance, cold response, water-use efficiency, and fungal disease response. The encoded protein localises to the peroxisome membrane, chloroplast thylakoid membrane, stress granule, and plasmodesma, and is associated with regulation of sodium transport, cell wall organisation, and vascular transport.