CBF1 — Solanum tuberosum

Summary

PGSC0003DMG400014311, also known as CBF1, CBF3, or DREB1C on potato chromosome 3, encodes a CRT-binding factor 3 protein containing an AP2/ERF DNA-binding domain. The gene product exhibits DNA-binding transcription factor activity, histone acetylase activity, and transcription coactivator activity, and localises to the nucleus and cytoplasm. In potato, CBF1 is associated with heat tolerance, cellular responses to drought and salinity, response to freezing, positive regulation of leaf senescence, upregulation of chlorophyll breakdown and wax anabolism, raffinose anabolism, ethylene anabolism, glucose-mediated signalling, and regulation of vegetative phase change. The gene has been linked to numerous traits including tuber size, leaf trichome density, net photosynthetic rate, transpiration rate, anthocyanin content, jasmonic acid content, and responses to water stress, nutrients, cytokinin, auxin, and brassinosteroids. Studies of related genes in other species connect the CBF family to freezing tolerance, drought tolerance, and pathogen resistance.