CBL1 — Triticum turgidum subsp. durum

Summary

TRITD1BV1G194200, designated TtCBL1 on durum wheat chromosome 1B, encodes a calcineurin B-like protein with EF-hand calcium-binding domains and annotated calcium ion sensor activity, along with methylthioadenosine nucleosidase, ATPase inhibitor, protein kinase regulator and voltage-gated anion channel activities. The gene is associated with thermomorphogenesis, monoatomic ion homeostasis, regulation of potassium transport, response to pH and nitrogen levels, reproductive processes, and circadian clock temperature compensation. It has been connected to spot blotch, leaf yellowing tolerance, water stress and temperature stress responses, powdery mildew disease response, root system morphology, vegetative vigor, and photoperiod-sensitive flowering time. Localisation evidence links the product to the nucleotide-activated protein kinase complex, aleurone grain membrane, root hair tip, pollen tube, and nuclear speck. Studies of related genes in other species connect the CBL family to potassium deficiency tolerance, salt and drought stress responses, root meristem development, seed oil content, and ethylene biosynthesis.