AP2 — Triticum turgidum subsp. durum

Summary

TRITD3AV1G009580, designated TtAP2 (also known as AP2 or PTI6) on durum wheat chromosome 3A, encodes a protein of the AP2/ERF ERF subfamily, characterized by an AP2/ERF domain and DNA-binding domain superfamily. The protein localizes to the nucleus and exhibits DNA-binding transcription factor activity with transcription cis-regulatory region binding. TtAP2 is associated with meristem development, morphogenesis, defense response, response to abiotic stimulus, homeostasis, and DNA-dependent transcription. It has been linked to spike density, grains per spike, spike length, anthesis time, plant height, and grain yield. Studies of related genes in other species connect the AP2/ERF family to additional traits such as seed length, panicle weight, spikelet fertility, and grain weight per spike.