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Title

Characterization of α/β- and γ-gliadins in commercial varieties and breeding lines of durum wheat using MALDI-TOF and A-PAGE gels

AuthorsMarín, Santiago ; Gil Humanes, Javier ; Hernando, Alberto; Barro Losada, Francisco
Issue DateDec-2011
PublisherSpringer
CitationBiochemical Genetics 49(11-12): 735-747 (2011)
AbstractIn this work, gliadin composition has been analyzed in 33 accessions of durum wheat using MALDI-TOF MS and compared with A-PAGE results. The MALDI-TOF MS spectra were 29,900-42,500 Da, which corresponds to the α/β- and γ-gliadin regions in A-PAGE. The average of gliadin peaks per line was 23 for MALDI-TOF MS and only 14.8 bands for A-PAGE. MALDI-TOF MS identified 33 gliadin peaks in the durum wheat collection, 20 of which were unique peaks present in 7 lines. A-PAGE analysis identified 30 bands, of which only 4 were unique. Thus, the MALDI-TOF MS method was more sensitive than A-PAGE for identifying α/β- and γ-gliadins in the 33 durum wheat lines studied. Phylogenetic analyses performed using MALDI-TOF MS data assigned the durum wheat lines to two groups. The utility of MALDI-TOF MS to determine relationships among genotypes and for identification of durum wheat accessions is discussed. © 2011 Springer Science Media, LLC.
URIhttp://hdl.handle.net/10261/84799
DOI10.1007/s10528-011-9446-4
Identifiersdoi: 10.1007/s10528-011-9446-4
issn: 0006-2928
e-issn: 1573-4927
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