Establishment and Application of Multiplex PCR Systems Based on Molecular Markers for HMW-GSs in Wheat
文献类型: 外文期刊
作者: Yao, Chuxuan 1 ; Zhang, Cuimian 3 ; Bi, Caili 2 ; Zhou, Shuo 1 ; Dong, Fushuang 1 ; Liu, Yongwei 1 ; Yang, Fan 1 ; Jiao, Bo 1 ; Zhao, He 1 ; Lyu, Mengyu 1 ; Wang, Haibo 1 ; Chai, Jianfang 1 ;
作者机构: 1.Hebei Acad Agr & Forestry Sci, Inst Biotechnol & Food Sci, Plant Genet Engn Ctr Hebei Prov, Shijiazhuang 050051, Hebei, Peoples R China
2.Hebei Normal Univ, Life Sci Coll, Shijiazhuang 050024, Hebei, Peoples R China
3.Hebei Acad Agr & Forestry Sci, Inst Agr Resources & Environm, Shijiazhuang 050051, Hebei, Peoples R China
关键词: Bx7(OE); multiplex PCR markers; HMW-GSs; wheat quality
期刊名称:AGRICULTURE-BASEL ( 影响因子:3.408; 五年影响因子:3.459 )
ISSN:
年卷期: 2022 年 12 卷 4 期
页码:
收录情况: SCI
摘要: High-molecular-weight glutenin subunits (HMW-GSs) encoded by alleles at the Glu-A1, Glu-B1, and Glu-D1 loci confer unique end-use quality properties of common wheat (Triticum aestivum L.). Wheat accessions with the high-quality HMW-GSs combination of Ax2*/Bx7(OE)/Dx5 usually exhibit strong gluten characteristics. In order to stack these three high-quality subunit genes by molecular markers in strong gluten wheat breeding, an agarose gel-based multiplex PCR marker for these high-quality HMW-GSs and two agarose gel-based multiplex PCR markers detecting the homozygosity of Ax2* and Bx7(OE) subunits were developed. These markers were verified in an F-2 segregating population from a cross between a medium-gluten winter wheat cultivar with the HMW-GSs combination of Ax null/Bx7 + By8/Dx4 + Dy12 and a strong-gluten spring wheat cultivar with the HMW-GSs combination of Ax2*/Bx7(OE) + By8*/Dx5 + Dy10. By integrating the newly established multiplex PCR markers and a published co-dominant PCR marker of the Dx5 subunit, a complete molecular marker selection system was established. After multiple rounds of molecular marker-assisted selection with the system, 17 homozygous winter wheat lines that stacked the three high-quality HMW-GSs were generated. The gluten strength of these homozygous lines was comparable to their strong-gluten parent, but significantly higher than that of their medium-gluten parent by measuring their lactic acid-sodium dodecyl sulfate solvent retention capacities of whole wheat meal. The multiplex PCR systems established in the present study can be used for molecular marker-assisted selection of strong gluten wheats.
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