Definition of the low molecular weight glutenin subunit gene family members in a set of standard bread wheat (Triticum aestivum L.) varieties |
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| Institution: | 1. Dept. of Crop and Soil Sciences, Washington State University, Pullman, WA, USA;2. USDA-ARS Western Wheat Quality Laboratory, Pullman, WA, USA;3. CIMMYT. Global Wheat Program, Km 45 Carretera México-Veracruz, El Batán, C.P. 56237, Texcoco, Estado de México, Mexico;1. Triticeae Research Institute, Sichuan Agricultural University, Wenjiang 611130, PR China;2. Key Laboratory of Crop Genetic Resources and Improvement, Ministry of Education, Sichuan Agricultural University, Ya''an 625014, PR China;1. National Institute of Agricultural Science, RDA, Jeonju, 54874, Republic of Korea;2. National Institute of Crop Science, RDA, Wanju, 55365, Republic of Korea;3. USDA-ARS, Western Regional Research Center, 800 Buchanan Street, Albany, CA, 94710, USA;4. Department of Crop Science and Agriculture, Chonbuk National University, Jeonju, 54896, Republic of Korea;1. Council for Agricultural Research and Economics, Research Centre for Genomics and Bioinformatics (CREA-GB), Via San Protaso 302, 29017 Fiorenzuola d’Arda (PC), Italy;2. Coop Italia, Via del lavoro 6/8, 40033 Casalecchio di Reno (BO), Italy;3. Barilla G. e R. Fratelli, Via Mantova 166, 43122 Parma, Italy;1. Institute of Crop Science, National Wheat Improvement Center, Chinese Academy of Agricultural Sciences (CAAS), 12 Zhongguancun South Street, Beijing, 100081, China;2. International Maize and Wheat Improvement Center (CIMMYT), c/o CAAS, 12 Zhongguancun South Street, Beijing, 100081, China;3. Queensland Alliance for Agriculture and Food Innovation, The University of Queensland, St Lucia, QLD, 4072, Australia;4. International Maize and Wheat Improvement Center (CIMMYT), Yenimahalle, Ankara, 06170, Turkey;5. Department of Plant Sciences, Quaid-i-Azam University, Islamabad, 45320, Pakistan;1. Department of Agricultural, Food and Forest Sciences, Università Degli Studi di Palermo, Viale Delle Scienze 13, Building 4, 90128, Palermo, Italy;2. Faculty of Engineering Technology, Katholieke Universiteit Leuven, Gebroeders de Smetstraat 1, 9000, Ghent, Belgium;3. Stazione Consorziale Sperimentale di Granicoltura per La Sicilia, Via Sirio, Borgo Santo Pietro, 195041, Caltagirone (CT), Italy |
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| Abstract: | Low-molecular-weight glutenin subunits (LMW-GS) are a class of seed storage proteins that play a major role in the determination of the viscoelastic properties of wheat dough. The LMW-GSs are encoded by multi-gene families at the Glu-A3, Glu-B3 and Glu-D3 loci, with more than 15 genes present in most bread wheat varieties. However, the genic profile associated with different alleles has not been clearly defined. Here, the LMW-GSs in a set of standard varieties were analyzed using molecular markers. In most cases, each Glu-3 allele was represented by a specific haplotype; however, some alleles were undistinguishable. The Glu-A3e and Glu-A3g alleles showed an identical marker haplotype, as did the alleles Glu-B3c and Glu-B3d, and Glu-B3f and Glu-B3ab. In contrast, two haplotypes among varieties designated Glu-D3c were differentiated. The marker profiles present at the Glu-D3 locus exhibited less variation compared to the genes at the Glu-A3 and Glu-B3 loci. Results show the potential of the LMW-GS gene marker system in the characterization of the LMW-GS alleles present in specific bread wheat varieties, and its reconciliation with protein-based nomenclature. This approach will advance the understanding of the contribution of each of the LMW-GS gene alleles in the control of the end-use quality. |
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| Keywords: | Low-molecular-weight glutenin subunits Alleles Molecular marker Bread wheat |
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