AP1 — Brachypodium distachyon

Summary

BRADI_1G59250V3 (AP1) encodes a MADS-box transcription factor containing a K-box domain and MEF2-like domain, with RNA polymerase II-specific DNA-binding and transcription corepressor activity. In Brachypodium distachyon, this gene is associated with regulation of the vegetative-to-reproductive phase transition, vernalization response, inflorescence and floral meristem identity, fruit and floral organ development, and root meristem size. It has been linked to agronomically important traits including flowering time, photoperiod sensitivity, spikelet meristem identity, inflorescence architecture, grain weight, heading date, panicle development, forage yield, and drought tolerance. The gene is also connected to responses to UV light, high temperature, cytokinin, and brassinosteroids, as well as anthocyanin content and leaf senescence. Related genes in other species are linked to flower senescence, abscission, grain shape, and tiller architecture.