ABF2 — Beta vulgaris subsp. vulgaris

Summary

BVRB_7G169340 (ABF2, AREB1) encodes a bZIP domain-containing protein with calcium-dependent protein kinase activity, protein phosphatase activity, sequence-specific DNA binding, cis-regulatory region sequence-specific DNA binding, and transcription coactivator activity. In sugar beet, ABF2 is associated with upregulation of chlorophyll breakdown, positive regulation of leaf senescence and autophagy, regulation of stomatal opening, detection of nutrient, glucose-mediated signalling, far red signalling, response to herbicide and carbon dioxide, and downregulation of lateral root development. It localises to the nucleus, cytosol, plasmalemma, mitochondria, Golgi, and plasmodesmata. The gene is linked to traits including tuberous root tuber weight, sucrose content, biomass yield, seed set percent, submergence tolerance, water stress response trait, photoperiod-sensitive flowering time trait, and vegetative vigor. Related genes in other species link the family to drought tolerance, seed maturation, and germination rate.