DREB2 — Brassica juncea

Summary

BJUA03G26840S (BjDREB2) on Indian mustard chromosome A03 encodes a transcription factor with an AP2/ERF domain, DNA-binding and transcription cis-regulatory region binding activities, and NAD ADP-ribosyltransferase activity. The gene is associated with responses to heat, ozone, oxidative stress, superoxide, ethylene, and jasmonic acid signalling, as well as photoperiodic flowering, pollen development, embryo development, lateral root morphogenesis, and defence against bacteria. It localises to both the nucleus and cytoplasm. Associations with agronomic traits include shoot dry weight, starch content, yield, plant height, root development and thickness, stomatal resistance, cell elongation, meristem identity, disease tolerance, and salt tolerance. The gene is also linked to drought, heat, osmotic, and oxidative stress responses, as well as hormone sensitivities and root-to-shoot signalling. Studies of related genes in other species connect the family to stress adaptation, cell death, and ozone sensitivity.