PP2A — Brassica juncea

Summary

BjPP2A (BJUB05G08010S) on Indian mustard chromosome B05 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 calcineurin-like phosphoprotein phosphatase families. The gene is associated with brassinosteroid signaling, regulation of seed size, and reproductive structure development. It has been linked to responses to abscisic acid, gibberellin, heat, cold, salinity, and stress, as well as regulation of auxin polar transport, sugar-mediated signaling, mitotic spindle organization, and seed germination. Associations include traits such as water use efficiency, flowering time, leaf senescence, root morphology, anthocyanin content, cadmium concentration, and iron content. The protein localizes to the nucleus, cytosol, mitochondria, and PP2A complex. Related genes in other species link the family to ABA signaling, seed dormancy, drought tolerance, and stomatal aperture.