BG2 — Arabidopsis thaliana

Summary

AT3G57260, also known as BG2, PR2, or beta-1,3-glucanase 2, encodes a glucan endo-1,3-beta-D-glucosidase (EC 3.2.1.39) with glucan 1,3-beta-glucosidase and endo-1,4-D-glucanase activities, belonging to the Glyco_hydro_17 family. In Arabidopsis thaliana, this gene is associated with defense response, pathogen resistance, virus resistance, cell wall modification, and disease resistance to Botrytis cinerea. It is linked to cellular defense response, host invasion, polysaccharide metabolism, and phytoalexin biosynthesis. The protein localizes to the apoplast, cell wall, secretory vesicles, ER, Golgi, and vacuole. Associations with traits such as leaf size, chlorophyll content, photosynthetic rate, pollen fertility, nitrate uptake, sugar content, proline content, and salt and drought tolerance have been noted. Studies of related genes in other species connect the family to fruit width, grain size, and powdery mildew resistance.