ABF1 — Daucus carota subsp. sativus

Summary

DCAR_019240 (DcABF1) on carrot chromosome 5 encodes a BZIP46-like protein with calcium-dependent protein kinase activity, protein phosphatase activity, and cis-regulatory DNA binding. It is associated with regulation of abscisic acid-mediated signalling, upregulation of chlorophyll breakdown, positive regulation of leaf senescence, glucose-mediated signalling, and regulation of stomatal opening. The gene has been linked to tuberous root weight and size, biomass yield, seed set percent, photosynthetic ability, vegetative vigor, and photoperiod-sensitive flowering time. Associations also include responses to drought, water stress, salinity, aluminum, cadmium, iron, and nitrate, as well as lignin biosynthesis, linoleic and linolenic acid content, and disease response to powdery mildew. Related genes in other species connect the ABF family to drought tolerance, cold tolerance, heat stress response, and tuberization.