ABF1 — Cucumis melo

Summary

MELO3C018458.2 (CmABF1) on melon chromosome 2 encodes a protein of the BZIP46-like family and bZIP superfamily, with annotated molecular functions including calcium-dependent PKC activity, Ca2+/CaM-dependent kinase activity, calcium-dependent protein serine/threonine kinase activity, protein kinase binding, phosphatase activity, protein phosphatase activity, cis-regulatory region sequence-specific DNA binding, protein serine/threonine phosphatase activity, transcription coactivator activity, protein phosphorylated amino acid binding, kinase binding, calcium ion binding, ubiquitin-protein transferase activity, and kinase activity. The gene is associated with upregulation of chlorophyll breakdown, positive regulation of leaf senescence, regulation of abscisic acid-mediated signalling, regulation of stomatal opening, glucose-mediated signalling, far-red signalling, endosomal transport, and unsaturated fatty acid and triglyceride anabolism. It has been linked to numerous agronomic traits including biomass yield, photosynthetic ability, seed set percent, vegetative vigor, tuberous root weight, linoleic and linolenic acid content, lignin biosynthesis, plant male sterility, photoperiod-sensitive flowering time, water stress response, and responses to cadmium, aluminum, iron, and nitrate. Studies of related genes in other species connect the family to drought, heat, cold, and salinity tolerance, as well as tuberization and storage root yield.