SPS — Asparagus officinalis

Summary

A4U43_C07F1840, symbol SPS and preferred name AoSPS in asparagus (Asparagus officinalis) on chromosome 7, encodes a protein with spermine synthase and spermidine synthase activities (EC 2.5.1.16) and belongs to the spermidine synthase eukaryotic family. The gene is associated with polyamine, spermidine, and spermine anabolism, as well as carbohydrate storage, sucrose metabolism, autotrophy, nitric oxide storage, and defence response to bacteria. It is linked to traits including carbohydrate and sucrose content, net photosynthetic and respiration rates, jasmonic acid content, high temperature stress response, disease tolerance, and salt tolerance. Phenotypic associations include drought and salt stress responses, thermotolerance, disease resistance to Botrytis cinerea and Pseudomonas syringae, nematode susceptibility, and root growth inhibition. The protein localises to the cytosol, cytoplasm, nucleus, mitochondria, and plasmalemma.