DREB2 — Pisum sativum

Summary

PsDREB2 (PSAT2G030560) on garden pea chromosome 2LG1 encodes a protein with an AP2/ERF DNA-binding domain and annotated activities including DNA binding, transcription cis-regulatory region binding, transcription coactivator activity, NAD ADP-ribosyltransferase activity, and ubiquitin-protein transferase activity. The gene is associated with diverse biological processes such as upregulation of chlorophyll breakdown, leaf senescence, defense response, flower development, photoperiodism, ethylene and glucose signalling, nitric oxide anabolism, stomatal complex patterning, trichome branching, and responses to superoxide and ozone. It localises to the nucleus, cytoplasm, nucleolus, RNA polymerase II/IV/V complexes, and the Mediator complex. Associations with agronomic traits include yield, plant height, chlorophyll content, photosynthetic rate, transpiration rate, stomatal resistance, water stress response, osmotic sensitivity, root development, lateral root length, leaf senescence, and floral organ development. Related genes in other species are linked to enhanced dehydration tolerance, heat tolerance, drought response, and salinity tolerance.