CBF3 — Arabidopsis thaliana

Summary

AT4G25480 (CBF3, also known as DREB1A) encodes a protein of the AP2/ERF domain family that binds cis-regulatory DNA sequences and possesses histone acetylase activity. In Arabidopsis, CBF3 is associated with anthocyanin accumulation, storage root yield, plant growth, transpiration efficiency, and salinity tolerance. The gene is linked to numerous biological processes including raffinose and strigolactone anabolism, chlorophyll metabolism, glucose mediated signalling, and regulation of signal transduction. It localises to the nucleus and cytoplasm and is connected to the histone acetylase complex. CBF3 is associated with traits such as tuberous root weight, spikelet fertility, chilling stress response, photosynthetic ability, proline content, and leaf temperature. Studies of related genes in other species link the family to cold, freezing, dehydration, and salt stress tolerance, as well as heat tolerance and tuber induction.