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Characterization of high- and low-molecular-weight glutenin subunits from Chinese Xinjiang wheat landraces and historical varieties

文献类型： 外文期刊

作者： Dai, Shoufen 1 ; Xu, Dongyang 1 ; Yan, Yongliang 2 ; Wen, Zhaojin 1 ; Zhang, Jinbo 2 ; Chen, Haixia 1 ; Lu, Zifeng 2 ; Li 1 ;

作者机构： 1.Sichuan Agr Univ, Triticeae Res Inst, Chengdu 611130, Sichuan, Peoples R China

2.Xinjiang Acad Agr Sci, Res Inst Crop Germplasm Resource, Urumqi 830091, Xinjiang Uygur, Peoples R China

关键词： Glu-1; Glu-3; SDS-PAGE; Allele specific PCR marker; Genetic diversity

期刊名称：JOURNAL OF FOOD SCIENCE AND TECHNOLOGY-MYSORE （ 影响因子：2.701； 五年影响因子：3.574 ）

ISSN： 0022-1155

年卷期： 2020 年 57 卷 10 期

页码：

收录情况： SCI

摘要： Landraces and historical varieties are necessary germplasms for genetic improvement of modern cereals. Allelic variations at the Glu-1 and Glu-3 loci in 300 common wheat landraces and 43 historical varieties from Xinjiang, China, were evaluated by Sodium-dodecyl-sulfate polyacrylamide gel electrophoresis (SDS-PAGE) and allele-specific molecular markers. Among the materials investigated, three, nine, and seven alleles were identified from the Glu-A1, Glu-B1, and Glu-D1 loci, respectively, and a total of 26 high-molecular-weight glutenin subunit (HMW-GS) combinations were found, of which 18 combinations were identified in landraces and historical varieties. Allelic frequency of HMW-GS combinations null, 7 + 8, 2 + 12 was found to be the highest in both the landraces (63.3%) and historical varieties (39.5%). Besides, some distinctive HMW-GS alleles, such as the novel Glu-B1 allele 6.1* + 8.1* and Glu-D1 alleles 2.6 + 12, 2.1 + 10.1, and 5** + 10 were observed in Xinjiang wheat landraces. Among the Glu-A3 and Glu-B3 loci of landraces and historical varieties, a total of eight and nine alleles were found, respectively. At each locus, two novel alleles were identified. A total of 33 low-molecular-weight glutenin subunit (LMW-GS) combinations of Glu-A3 and Glu-B3 were identified, with 31 and 14 combinations occurring in landraces and historical varieties, respectively, but only 10 combinations shared by both of them. As Glu-D1, Glu-A3, and Glu-B3 have highest contribution to the end-use quality and processing properties as compared to Glu-A1, Glu-B1, and Glu-D3 locus, the novel or distinctive HMW-GS and LMW-GS alleles in these loci could potentially be utilized for the improvement in the quality of modern wheat.

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