PP2A — Cucumis melo

Summary

MELO3C012042.2 (symbol PP2A, CmPP2A) on melon chromosome 11 encodes a protein with serine/threonine phosphatase activity, protein phosphatase regulator activity, and protein tyrosine phosphatase activator activity, belonging to the PPA2-like and calcineurin-like phosphoesterase families. The gene is associated with brassinosteroid signaling, TOR signaling, regulation of stomatal opening, chloroplast avoidance movement, and protein dephosphorylation. It has been linked to numerous agronomic traits including seed yield, biomass yield, leaf elongation rate, root hair length, lateral root length, transpiration rate, cadmium concentration, nitrate sensitivity, phosphorus uptake, and responses to high temperature, osmotic stress, and aluminum. The encoded protein localizes to the PP2A complex, nucleus, cytosol, plasmalemma, mitochondria, and ER membrane. Studies of related genes in other species link the family to phosphorus deficiency tolerance, potassium uptake, iron acquisition, salinity tolerance, and disease resistance.