D3 — Zea mays

Summary

ZM00001EB376660, designated D3 (also known as MAX2, ORE9, PPS), encodes an F-box protein MAX2 on maize chromosome 9. The product is a transcription regulator with DNA-binding and protein-binding activities, and it assembles into SCF ubiquitin ligase complexes. D3 is associated with the regulation of shoot morphogenesis, bud dilation, leaf senescence, de-etiolation, meristem organisation, auxin polar transport, phloem or xylem histogenesis, and responses to brassinosteroid and UV light. It has been linked to gibberellin biosynthesis, abscisic acid accumulation, and traits including shoot branching, tiller number, seed viability, carotenoid content, total soluble sugar content, root epidermal cell length, anther morphology, photoperiod-sensitive flowering time, and vegetative-to-reproductive phase transition. Studies of related genes in other species connect the family to strigolactone perception, axillary branching, root hair elongation, drought resistance, and pathogen resistance.