PP2A — Brassica juncea

Summary

BJUA06G35730S (BjPP2A-2) encodes a protein with PPA2-like, Ser/Thr-specific protein phosphatase, calcineurin-like phosphoesterase, and metallo-dependent protein phosphatase domains, and is annotated with protein phosphatase, kinase, and metal-binding activities. This Indian mustard gene on chromosome A06 is associated with brassinosteroid signaling, seed development, and regulation of seed size. It is linked to traits including biomass yield, seed yield, water use efficiency, leaf elongation rate, root mass density, flowering time, and stress responses such as cold, drought, and osmotic sensitivity. The gene is associated with regulation of stomatal opening and closure, abscisic acid signaling, TOR signaling, nitrogen utilization, sucrose metabolism, and fatty acid beta-oxidation. Related genes in other species link the PP2A family to ABA responsiveness in stomata, stomatal conductance, oil synthesis, and potassium uptake.