GW8 — Triticum aestivum

Summary

TRAESCS5A02G286700, designated TaGW8 (also known as TaSPL13-5A, TaSPL18, or SPL13), encodes an SBP-type domain-containing protein with DNA-binding transcription activator activity. This bread wheat gene on chromosome 5A is associated with grain length, grain yield per plant, spikelet number, spike length, ear number, grains per spike, and tiller number. It is linked to heading time, days to maturity, stem elongation, and floral organ identity. The gene is associated with cell wall modification, cuticle and wax anabolism, very-long-chain fatty acid metabolism, and cellular response to auxin stimulus. Associations also include seminal root length, leaf length, cold tolerance, oxidative stress response, and protein content. The encoded protein localizes to the nucleus. Studies of related genes in other species link the family to vegetative phase change, grain size, and drought tolerance.