CCD8 — Medicago truncatula

Summary

MTR_7G063800, designated MtCCD8 (also known as CCD8B, MAX4, and RMS1), encodes a carotenoid cleavage dioxygenase with 9-cis-epoxycarotenoid dioxygenase activity, localised to the chloroplast stroma. The gene is associated with strigolactone and abscisic acid biosynthesis, apocarotenoid and phytoene anabolism, and carotene and xanthophyll breakdown. It has been linked to shoot and axillary branching, lateral shoot growth, leaf morphogenesis and senescence, nodulation, auxin transport and response, and secondary shoot formation. Phenotypic associations include phosphate and nitrogen starvation responses, root system architecture, somatic embryogenesis, shoot regeneration, and resistance to leafy gall syndrome. Related genes in other species are linked to lateral branching, flowering time, drought tolerance, and endophytic fungal symbiosis.