BG1 — Oryza sativa Japonica

Summary

OsBG1 (OS09G0533200) in rice encodes a glycoside hydrolase family 17 protein with lichenase and glucan endo-1,3-beta-D-glucosidase activity, as well as protein homodimerization activity. The gene is associated with diverse biological processes including downregulation and regulation of photosynthesis, cytokinin transport, biofilm formation, polyketide anabolism, 1,3-beta-glucan breakdown, digestion, cellulose anabolism, regeneration, MAPK cascade, translation initiation, syngamy, chlorophyll fluorescence, lateral root development, and stomatal movement. It localizes to the vacuole and extracellular space. OsBG1 is linked to numerous agronomically important traits such as grain shape, size, weight, number, and yield, as well as amylose and sucrose content, plant height, panicle length, leaf length, seed size, embryoless seed, brittle culm, transpiration rate, stomatal resistance, and protein content. Studies of related genes in other species further connect the family to glucan metabolism.