Analysis of LMW-GS, α- and γ-Gliadin Gene Coding Sequences from Triticum macha

Novel LMW-GS (low molecular weight glutenin subunit), α- and γ-gliadin from Triticum macha accessions were characterized via genomic PCR, which can do favor to improve the wheat quality. The complete coding regions of two α-gliadin, two γ-gliadin and two LMW-GS gene sequences, which designed as Gli-Mal, Gli-Ma2, Gli-Mr1, Gli-Mr2, Glu-LM1 and Glu-LM2, encoded the mature proteins with 307, 241, 348, 302, 474 and 377 amino acid residues, respectively. Gli-Mal and Gli-Ma2 were recognized as pseudogenes due to the in-frame stop codons. The amino acid sequences deduced from these gene sequences were characterized with the typical structure of α- or γ-gliadin or LMW- m type proteins with the exception of Gli-Ma2. Phylogenetic analysis showed Gli-Mal was closely related to those from T. aestivum, whereas Gli-Ma2 seemed to be more homologous with the gene sequences from Dasypyrum breviaristatum. Gli-Mr1 was closely related to those from T. turgidum ssp. dicoccoides, while Gli-Mr2 was the nearest to those from T. aestivum. Glu-LM1 was closely related to those from Aegilops tauschii, whereas Glu-LM2 seemed to be more homologous with those from T. durum.