PG2 — Brassica juncea

Summary

BJUB06G04350S (symbol PG2, preferred name BjADPG1) on Indian mustard chromosome B06 encodes a protein with exo-D-galacturonase activity and polygalacturonase activity, belonging to the Glyco_hydro_28 and pectin lyase fold families. The gene is associated with pectin breakdown, cell wall organization and modification involved in abscission, as well as dehiscence of anthers and fruit, fruit ripening, auxin anabolism, ABA signaling, and carbohydrate metabolism. Its product localizes to the amyloplast, apoplast, and extracellular space. BjADPG1 is associated with defense response and cell wall remodeling. Studies of related genes in other species connect the family to silique dehiscence and seed dispersal, and sequence similarity links the family to silique fruit morphology and lignin content traits.