DREB2B — Zea mays

Summary

ZM00001EB347600, designated DREB2B (also known as ZmDREB2A), encodes a DNA-binding transcription factor containing an AP2/ERF domain, localised to the nucleus. In maize, this gene is directly associated with drought tolerance. It has been linked to a wide range of biological processes, including raffinose metabolism, hormone metabolism, polyamine anabolism, and responses to water transport and drought recovery. Associations with agronomically important traits include grain yield, plant height, anthesis-silking interval, biomass yield, net photosynthetic rate, water use efficiency, seed longevity, and tolerance to chilling, heat, cold, and salinity. The gene is also connected to traits such as leaf size, root length, chlorophyll content, proline content, and osmotic adjustment capacity. Studies of related genes in other species link the DREB2 family to abiotic stress tolerance, including heat, salt, osmotic, and freezing stress.