DREB2 — Brassica juncea

Summary

BJUB07G20490S, designated BjDREB2, encodes a protein of the AP2/ERF family with DNA-binding and NAD ADP-ribosyltransferase activity, localised to both the nucleus and cytoplasm. In Indian mustard, this gene is associated with responses to abiotic stresses including drought, heat, ozone, oxidative stress, and osmotic stress, as well as with hormone signalling pathways involving ethylene, abscisic acid, and jasmonic acid. It is linked to cuticle and wax biosynthesis, nitric oxide metabolism, photoperiodic flowering, pollen development, and lateral root morphogenesis. Associations with agronomic traits include yield, shoot dry weight, starch content, plant height, root development and thickness, stomatal resistance, and disease tolerance. Studies of related genes in other species connect the family to stress adaptation, cell death, meristem maintenance, and hormone sensitivity.