CCD8 — Medicago truncatula

Summary

MTR_3G109610 (MtCCD8, also known as MAX4 or RMS1) on barrel medic chromosome 3 encodes a protein with a carotenoid cleavage dioxygenase domain and 9-cis-10'-apo-beta-carotenal cleavage oxygenase activity. The enzyme is localized to the chloroplast stroma and is associated with strigolactone, apocarotenoid, phytoene, and abscisic acid anabolism, as well as carotene and xanthophyll breakdown. MtCCD8 is linked to secondary shoot formation, leaf morphogenesis, nodulation, auxin anabolism, auxin polar transport, response to auxin, response to abscisic acid, response to thirst, response to herbicide, and associations with shoot branching, axillary branching, leaf senescence, somatic embryogenesis, shoot regeneration, root system architecture, and responses to phosphate starvation and nitrogen deficiency. Studies of related genes in other species link the family to lateral branching, flowering time, and endophytic fungal symbiosis.