BG1 — Solanum lycopersicum

Summary

SlBG1 (SOLYC01G060010.3) encodes a glycosyl hydrolase family 17 protein with glucan exo-1,3-beta-glucosidase, lichenase, cellulase, and glucan endo-1,3-beta-D-glucosidase activities. In tomato, the gene is associated with herbivore defense and sugar/organic acid ratio. It has been linked to numerous traits including fruit weight, sugar content, protein content, germination rate, seed maturation, photosynthetic rate, chlorophyll content, root length, shoot fresh weight, and transpiration rate. Associations also include anthocyanin accumulation, abscisic acid biosynthesis, phosphate acquisition, and responses to biotic and abiotic stresses such as nematode resistance, drought tolerance, salt tolerance, and pathogen defense. The encoded protein localizes to the apoplast, plant-type cell wall, vacuole, secretory vesicle, Golgi complex, mitochondria, and cytosol. Studies of related genes in other species link the family to defense responses, cell wall modification, and organ size.