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Biochemical and genetic characterization of a monomeric storage protein (T1) with an unusually high molecular weight in Triticum tauschii.
Theor Appl Genet. 2002 Feb; 104(2-3):497-504.TA

Abstract

The protein named T1, present in Triticum tauschii, was previously characterized as a high-molecular-weight (HMW) glutenin subunit with a molecular size similar to that of the y-type glutenin subunit-10 of Triticum aestivum. This protein was present along with other HMW glutenin subunits named 2(t) and T2, and was considered as part of the same allele at the Glu-D (t) 1locus of T. tauschii. This paper describes a re-evaluation of this protein, involving analyses of a collection of 173 accessions of T. tauschii, by SDS-PAGE of glutenin subunits after the extraction of monomeric protein. No accessions were found containing the three HMW glutenin subunits. On the other hand, 17 lines with HMW glutenin subunits having electrophoretic mobilities similar to subunits 2(t) and T2 were identified. The absence of T1 protein in these gel patterns has shown that protein T1 is not a component of the polymeric protein. Rather, the T1 protein is an omega-gliadin with an unusually high-molecular-weight. This conclusion is based on acidic polyacrylamide gel electrophoresis (A-PAGE), sodium dodecyl sulfate-polyacrylamide gel electrophoresis (SDS-PAGE), and two-dimensional gel electrophoresis (A-PAGE+ SDS-PAGE), together with analysis of its N-terminal amino-acids sequence. The inheritance of omega-gliadin T1 was studied through analyses of gliadins and HMW glutenins in 106 F(2)grains of a cross between synthetic wheat, L/18913, and the wheat cv Egret. HMW glutenin subunits and gliadins derived from T. tauschii (Glu-D (t) 1 and Gli-D (t) 1) segregated as alleles of the Glu-D1 and Gli-D1loci of bread wheat. A new locus encoding the omega-gliadin T1 was identified and named Gli-DT1. The genetic distance between this new locus and those of endosperm proteins encoded at the 1D chromosome were calculated. The Gli-DT1 locus is located on the short arm of chromosome 1D and the map distance between this locus and the Gli-D1 and Glu-D1 loci was calculated as 13.18 cM and 40.20 cM, respectively.

Authors+Show Affiliations

CSIRO Plant Industry, Grain Quality Research Laboratory, P.O. Box 7, North Ryde, NSW 1670 Australia.No affiliation info availableNo affiliation info availableNo affiliation info available

Pub Type(s)

Journal Article

Language

eng

PubMed ID

12582724

Citation

Gianibelli, M. C., et al. "Biochemical and Genetic Characterization of a Monomeric Storage Protein (T1) With an Unusually High Molecular Weight in Triticum Tauschii." TAG. Theoretical and Applied Genetics. Theoretische Und Angewandte Genetik, vol. 104, no. 2-3, 2002, pp. 497-504.
Gianibelli MC, Lagudah ES, Wrigley CW, et al. Biochemical and genetic characterization of a monomeric storage protein (T1) with an unusually high molecular weight in Triticum tauschii. Theor Appl Genet. 2002;104(2-3):497-504.
Gianibelli, M. C., Lagudah, E. S., Wrigley, C. W., & MacRitchie, F. (2002). Biochemical and genetic characterization of a monomeric storage protein (T1) with an unusually high molecular weight in Triticum tauschii. TAG. Theoretical and Applied Genetics. Theoretische Und Angewandte Genetik, 104(2-3), 497-504.
Gianibelli MC, et al. Biochemical and Genetic Characterization of a Monomeric Storage Protein (T1) With an Unusually High Molecular Weight in Triticum Tauschii. Theor Appl Genet. 2002;104(2-3):497-504. PubMed PMID: 12582724.
* Article titles in AMA citation format should be in sentence-case
TY - JOUR T1 - Biochemical and genetic characterization of a monomeric storage protein (T1) with an unusually high molecular weight in Triticum tauschii. AU - Gianibelli,M. C., AU - Lagudah,E. S., AU - Wrigley,C. W., AU - MacRitchie,F., PY - 2003/2/13/pubmed PY - 2003/2/13/medline PY - 2003/2/13/entrez SP - 497 EP - 504 JF - TAG. Theoretical and applied genetics. Theoretische und angewandte Genetik JO - Theor Appl Genet VL - 104 IS - 2-3 N2 - The protein named T1, present in Triticum tauschii, was previously characterized as a high-molecular-weight (HMW) glutenin subunit with a molecular size similar to that of the y-type glutenin subunit-10 of Triticum aestivum. This protein was present along with other HMW glutenin subunits named 2(t) and T2, and was considered as part of the same allele at the Glu-D (t) 1locus of T. tauschii. This paper describes a re-evaluation of this protein, involving analyses of a collection of 173 accessions of T. tauschii, by SDS-PAGE of glutenin subunits after the extraction of monomeric protein. No accessions were found containing the three HMW glutenin subunits. On the other hand, 17 lines with HMW glutenin subunits having electrophoretic mobilities similar to subunits 2(t) and T2 were identified. The absence of T1 protein in these gel patterns has shown that protein T1 is not a component of the polymeric protein. Rather, the T1 protein is an omega-gliadin with an unusually high-molecular-weight. This conclusion is based on acidic polyacrylamide gel electrophoresis (A-PAGE), sodium dodecyl sulfate-polyacrylamide gel electrophoresis (SDS-PAGE), and two-dimensional gel electrophoresis (A-PAGE+ SDS-PAGE), together with analysis of its N-terminal amino-acids sequence. The inheritance of omega-gliadin T1 was studied through analyses of gliadins and HMW glutenins in 106 F(2)grains of a cross between synthetic wheat, L/18913, and the wheat cv Egret. HMW glutenin subunits and gliadins derived from T. tauschii (Glu-D (t) 1 and Gli-D (t) 1) segregated as alleles of the Glu-D1 and Gli-D1loci of bread wheat. A new locus encoding the omega-gliadin T1 was identified and named Gli-DT1. The genetic distance between this new locus and those of endosperm proteins encoded at the 1D chromosome were calculated. The Gli-DT1 locus is located on the short arm of chromosome 1D and the map distance between this locus and the Gli-D1 and Glu-D1 loci was calculated as 13.18 cM and 40.20 cM, respectively. SN - 1432-2242 UR - https://www.unboundmedicine.com/medline/citation/12582724/Biochemical_and_genetic_characterization_of_a_monomeric_storage_protein__T1__with_an_unusually_high_molecular_weight_in_Triticum_tauschii_ L2 - https://dx.doi.org/10.1007/s00122-001-0778-z DB - PRIME DP - Unbound Medicine ER -
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