BG1 — Oryza sativa Japonica

Summary

OsBG1 (OS01G0944500) in rice encodes a glycoside hydrolase family 17 protein with lichenase and glucan endo-1,3-beta-D-glucosidase activity. The gene is associated with diverse biological processes including downregulation of photosynthesis, cytokinin transport, biofilm formation, polyketide anabolism, 1,3-beta-glucan breakdown, MAPK cascade, lateral root development, stomatal movement, and chlorophyll fluorescence. It has been linked to numerous agronomically important traits such as grain shape, grain length, grain weight, grain number, grain yield, amylose content, sucrose content, protein content, seed size, plant height, panicle length, leaf length, brittle culm, embryoless seed, transpiration rate, and stomatal resistance. The encoded protein localizes to the vacuole and extracellular space. Studies of related genes in other species link the family to EC 3.2.1.73 and EC 3.2.1.39 activities.