STM — Brassica napus

Summary

BnSTM (DARMORV10_A08P22950.1) on chromosome A08 of oilseed rape encodes a serine hydroxymethyltransferase (SHMT) family protein with pyridoxal phosphate binding and glycine hydroxymethyltransferase activity. The gene is associated with glycine and L-serine metabolism, tetrahydrofolate interconversion, and the glycine cleavage system. It has been linked to shoot apical meristem development, inflorescence meristem identity, floral whorl morphogenesis, and phyllotaxy. Associations with agronomic traits include drought tolerance, salt tolerance, flowering time, leaf chlorosis, peduncle length, and fruit development. The gene is also connected to photorespiratory metabolism, oxidative stress response, and stomatal closure. Localization evidence places the product in mitochondria, chloroplast stroma and thylakoid, and the cytosol. Related genes in other species link the family to photorespiration, basal immunity, and stem growth.