AP1 — Triticum turgidum subsp. durum

Summary

TRITD7BV1G007440, designated TtAP1, encodes a MADS-box domain-containing protein on durum wheat chromosome 7B. The protein exhibits RNA polymerase II transcription regulatory region sequence-specific DNA binding and protein dimerization activity, localising to the nucleus. This gene is associated with regulation of developmental processes, including meristem determinacy, carpel development, specification of floral organ identity, and flower development. It has been linked to anthesis time and grain yield. Related genes in other species, such as MADS5, MADS4, and LHS1, link this gene family to floral meristem identity and inflorescence architecture, though these specific associations are not yet established in durum wheat.