BG1 — Oryza sativa Japonica

Summary

OsBG1 (OS05G0375400) on rice chromosome 5 encodes a glycosyl hydrolase family 17 protein with glucan exo-1,3-beta-glucosidase, endo-1,3-beta-D-glucosidase, cellulase and lichenase activities. The gene is associated with regulation of photosynthesis, cytokinin transport, immune response, stomatal movement, lateral root development, and 1,3-beta-glucan breakdown. It localises to the apoplast, plant-type cell wall, vacuole, ER, Golgi, plasmodesmata and secretory vesicles. OsBG1 has been linked to grain yield, grain weight, grain length, grain shape, amylose content, plant height, panicle length, seed size, leaf elongation rate, nitrate uptake, transpiration rate, stomatal resistance, and traits related to phosphate acquisition, anthocyanin accumulation, abscisic acid biosynthesis, and response to Magnaporthe oryzae and wounding. Studies of related genes in other species connect the group to plasmodesmatal conductivity, callose degradation, and defence against pathogens including Botrytis cinerea and viruses.