HD3A — Triticum aestivum

Summary

TRAESCS7D02G111600 (TaHD3A, also known as TaVRN3-7D or TaRFT1-7D) on wheat chromosome 7D encodes a phosphatidylethanolamine-binding protein (PEBP family). The gene is associated with the regulation of flowering time, photoperiodism, and the transition from vegetative to reproductive phase, as well as responses to short-day conditions and vernalization. TaHD3A has been linked to numerous agronomic traits including heading time, spike weight, grains per spike, grain length and width, seed weight, harvest index, ear number, spikelet density, peduncle length, awn length, leaf dimensions, canopy temperature, frost damage, and grain dormancy. The protein localizes to the cytoplasm, nucleus, and endoplasmic reticulum. Studies of related genes in other species connect the family to floral meristem identity, heading date, and grain traits.