PP2A — Brassica juncea

Summary

BJUA09G16110S, designated BjPP2A-3, encodes a serine/threonine protein phosphatase belonging to the PPA2-like family, with protein phosphatase activity and regulator activity. In Indian mustard, this gene is associated with brassinosteroid signaling, TOR signaling, and the regulation of nitrogen utilization. It is linked to seed development, seed size, leaf size, and leaf senescence, as well as root mass density and primary root development. The gene product localizes to the PP2A complex, nucleus, and cytosol, and is associated with responses to cold, abscisic acid, and stress. Studies of related genes in other species link the family to altered ABA sensitivity, agravitropic root growth, and reduced seed germination, though these are not established for BjPP2A-3 itself.