SPMS — Cicer arietinum

Summary

LOC101503750 (CaSPMS) on chickpea chromosome 5 encodes a protein with spermine synthase and spermidine synthase activities, belonging to the spermidine/spermine synthase family. It also shows DNA-binding transcription factor activity and binds cis-regulatory regions. The gene is associated with polyamine, spermine, and spermidine anabolism, as well as primary metabolism and amino acid anabolism. CaSPMS is linked to induced systemic resistance, defense response by callose deposition in cell wall, and response to insect and response to bacteria. It has been connected to traits including photosynthetic rate, jasmonic acid content, high temperature stress response, disease tolerance, and salt tolerance. Localization evidence places the product in mitochondria, cytosol, plasma membrane, cytoplasm, and nucleus. Studies of related genes in other species link the family to heat stress tolerance, resistance to bacterial pathogens, callose deposition, and indolic glucosinolate biosynthesis.