PR5 — Asparagus officinalis

Summary

A4U43_C03F6360, designated PR5 (synonyms AoPR5, OSM-34, AoTLP1), encodes a protein belonging to the osmotin/thaumatin-like superfamily on asparagus chromosome 3. The product exhibits hydrolase activity, mRNA binding, and protein binding. PR5 is associated with defence responses to bacteria, fungi, and viruses, systemic acquired resistance, and regulation of anthocyanin anabolism. It is linked to responses to ethylene, UV-B, cadmium, and arachidonate, as well as to killing of cells of other organisms. The protein localises to the apoplast, plant-type cell wall, vacuole, cytoplasmic and secretory vesicles, plasmodesmata, membrane, mitochondria, and extracellular space. PR5 is associated with disease resistance, including resistance to Verticillium dahliae and Pseudomonas syringae, as well as with salt, drought, and osmotic stress tolerance, proline accumulation, and ABA and salicylic acid defence responses.