PR5 — Cicer arietinum

Summary

LOC101511345 (CaPR5) on chickpea chromosome 5 encodes a thaumatin-like protein belonging to the osmotin/thaumatin-like superfamily, with glucan endo-1,3-beta-D-glucosidase activity. The gene is associated with defence responses to fungi, viruses, and bacteria, as well as systemic acquired resistance and salicylic acid-mediated defence. CaPR5 is linked to responses to abscisic acid, ethylene, and salicylate, and to abiotic stress tolerance including salinity, drought, UV-B, and cadmium. It has been connected to nodulation, seed germination, regulation of anthocyanin anabolism, and self-incompatibility. The protein localises to the apoplast, plant-type cell wall, secretory vesicle, and vacuole. Studies of related genes in other species link the family to disease resistance, induced systemic resistance, nematode resistance, herbivore defence, cell wall integrity, and seed germination under salt stress.