STM — Cucumis sativus

Summary

CsSTM (CSA_2G372170) on cucumber chromosome 2 encodes a serine hydroxymethyltransferase (SHMT) with glycine hydroxymethyltransferase activity, pyridoxal phosphate binding, and additional annotated molecular functions including glutamate synthase activity, thiol-dependent deubiquitinase activity, and DNA-binding transcription factor activity. The gene is associated with carpel formation, floral whorl morphogenesis, sex determination, internode patterning, and maintenance of inflorescence meristem identity. It is linked to shoot and root meristem development, fruit growth, phyllotaxy, plant height, leaf shape, chlorophyll content, photosynthetic rate, flowering time, and responses to oxidative stress, disease, and salinity. Localisation evidence links the product to chloroplast thylakoid and envelope, mitochondrial lumen, stromule, and the respiratory chain complex I. Related genes in other species are associated with photorespiration, one-carbon metabolism, basal immunity, drought and salt tolerance, and stomatal closure.