The trihelix family, one of the first TFs discovered in plants, is classified as GT factors due to their binding specificity for GT elements. The DNA-binding domain of GT factor features a typical trihelix (helix-loop-helix-loop-helix) structure that determines the specific binding of GT elements. Trihelix TF contain one or two trihelix DNA binding domains, and were divided into five clades, GT-1, GT-2, SH4, GTg and SIP1. The diverse function of trihelix TFs were characterized due to the extension of the family members, functions including regulation of light-dependent expression , responses to abiotic and abiotic stresses , and to roles in a range of developmental processes involving morphogenesis control of manifold flower organs and leaves , trichomes and embryos development. We identified 88 trihelix genes, including JTY(32), LWM(28) and F106(28), all genes were divided into 5 subfamilies.