PR3 — Solanum tuberosum

Summary

PGSC0003DMG400001528 (PR3, also known as CHTA2) on potato chromosome 2 encodes a protein with a glycosyl hydrolase family 19 catalytic domain and chitin-binding activity (EC 3.2.1.14). The gene is associated with chitin and polysaccharide breakdown, cell wall macromolecule catabolic processes, and secretion. It is linked to defence responses against fungi, systemic acquired resistance, induced systemic resistance, ethylene-mediated signalling, hypersensitive response cell death, and phenylpropanoid biosynthesis. Associations also include fatty acid elongation and vacuolar localisation. The gene is associated with pathogen and nematode resistance, salt tolerance, seed germination under salt stress, wilt symptom development, ethylene sensitivity, photosynthetic rate, chlorophyll content, anthocyanin biosynthesis, and mycorrhization. Related genes in other species connect the family to resistance against Botrytis cinerea, bacterial wilt, and viruses, as well as to traits including fruit weight, starch yield, and leaf area index.