DREB2B — Triticum aestivum

Summary

TRAESCS1D02G223600 (symbol DREB2B, also known as Wdreb2) on bread wheat chromosome 1D encodes a transcription factor of the AP2/ERF family, possessing sequence-specific DNA binding and transcription cis-regulatory region binding activities. The gene is associated with abiotic stress tolerance, including responses to drought, salinity, heat, cold, and osmotic stress, as well as with ABA signalling, ethylene-mediated signalling, and defence responses. It has been linked to the upregulation of wax anabolism and cuticle anabolism, and to processes such as cold acclimation, embryogenesis, and homeostasis. The encoded protein localises to the nucleus. Associations with agronomic traits include grain protein content, starch content, seed size, ear number, days to flowering, net photosynthetic rate, transpiration rate, stomatal resistance, and tolerance to stem rust and stripe rust. Studies of related genes in other species link the DREB2 family to drought, salinity, osmotic stress, and freezing tolerance.