PP2A — Brassica juncea

Summary

BjPP2A (BJUB03G19430S) on Indian mustard chromosome B03 encodes a protein with serine/threonine phosphatase activity, protein tyrosine phosphatase activator activity, cis-trans proline isomerase activity, and DNA-binding transcription factor activity, belonging to the PPA2-like and metallo-dependent phosphatase-like families. The gene is associated with brassinosteroid signaling, regulation of seed size, and reproductive structure development. It is linked to responses to abscisic acid, gibberellin, heat, cold, salinity, and stress, as well as regulation of auxin polar transport, sugar-mediated signaling, and mitotic spindle organization. Associations include traits such as water use efficiency, flowering time, leaf senescence, root morphology, seed growth, anthocyanin content, cadmium concentration, and iron content. The product localizes to the nucleus, cytosol, mitochondria, and the PP2A complex. Studies of related genes in other species link the family to ABA sensitivity, seed germination, salt stress tolerance, and aluminum tolerance.