MDH — Phaseolus vulgaris

Summary

PHAVU_003G189700 (PvMDH) encodes a malate dehydrogenase (MDH) with NAD-L-malate dehydrogenase activity, belonging to the malate dehydrogenase type 1 family. In French bean, this gene is associated with malate metabolism, the TCA cycle, glyoxylate cycle, and chloroplast stroma protein import. It is linked to responses to light, heat, cold, and bacterial defence, as well as embryo development and seed dormancy. The encoded protein localises to plastid stroma, chloroplast inner membrane, envelope, and mitochondrial lumen. PvMDH is associated with photosynthetic rate, quantum yield, stomatal resistance, chloroplast development, seed coat colour, and high temperature stress response. It is also connected to thermotolerance, heat stress tolerance, oxidative stress tolerance, and plastid genome stability. Studies of related genes in other species link the MDH family to chloroplast development under heat stress.