SPMS — Cicer arietinum

Summary

LOC101492874 (CaSPMS) on chickpea chromosome 4 encodes a protein with spermine synthase and spermidine synthase activities, belonging to the spermidine/spermine synthase family. It is associated with polyamine, spermine, and spermidine anabolism, as well as primary and amino acid anabolism. The gene product localizes to the cytosol, nucleus, mitochondria, and plasma membrane. CaSPMS is linked to induced systemic resistance, defense response by callose deposition in cell wall, and response to insect and bacteria. It has been connected to agronomically relevant traits including photosynthetic rate, jasmonic acid content, high temperature stress response, disease tolerance, salt tolerance, drought tolerance, and thermotolerance. Additional associations include nematode susceptibility, root growth inhibition, and biosynthesis of glucosinolates and camalexin. Studies of related genes in other species link the family to heat stress tolerance, resistance to bacterial pathogens, callose deposition, and indolic glucosinolate biosynthesis.