Characterization ofPm68, a new powdery mildew resistance gene on chromosome 2BS of Greek durum wheat TRI 1796
文献类型： 外文期刊
作者： He, Huagang 1 ; Liu, Renkang 1 ; Ma, Pengtao 3 ; Du, Haonan 1 ; Zhang, Huanhuan 2 ; Wu, Qiuhong 4 ; Yang, Lijun 5 ; Gong, 1 ;
作者机构： 1.Jiangsu Univ, Sch Food & Biol Engn, Zhenjiang 212013, Jiangsu, Peoples R China
2.Jiangsu Univ, Sch Environm, Zhenjiang 212013, Jiangsu, Peoples R China
3.Yantai Univ, Coll Life Sci, Yantai 264005, Peoples R China
4.Chinese Acad Sci, Inst Genet & Dev Biol, State Key Lab Plant Cell & Chromosome Engn, Beijing 100101, Peoples R China
5.Hubei Acad Agr Sci, Inst Plant Protect & Soil Sci, Wuhan 430064, Peoples R China
6.USDA ARS, Reg Res Ctr, 800 Buchanan St, Albany, CA 94710 USA
期刊名称：THEORETICAL AND APPLIED GENETICS （ 影响因子：5.699； 五年影响因子：5.565 ）
ISSN： 0040-5752
年卷期：
页码：
收录情况： SCI
摘要： Key message New powdery mildew resistance genePm68was found in the terminal region of chromosome 2BS of Greek durum wheat TRI 1796. The co-segregated molecular markers could be used for MAS. Durum wheat (Triticum turgidumL. var.durumDesf.) is not only an important cereal crop for pasta making, but also a genetic resource for common wheat improvement. In the present study, a Greek durum wheat TRI 1796 was found to confer high resistance to all 22 tested isolates ofBlumeria graminisf. sp.tritici(Bgt). Inheritance study on theF(1)plants and theF(2)population derived from the cross TRI 1796/PI 584832 revealed that the resistance in TRI 1796 was controlled by a single dominant gene, herein designatedPm68. Using the bulked segregant RNA-Seq (BSR-Seq) analysis combined with molecular analysis,Pm68was mapped to the terminal part of the short arm of chromosome 2B and flanked by markersXdw04andXdw12/Xdw13with genetic distances of 0.22 cM each. According to the reference genome of durum wheat cv. Svevo, the corresponding physical region spanned thePm68locus was about 1.78-Mb, in which a number of disease resistance-related genes were annotated. This study reports the new powdery mildew resistance genePm68that would be a valuable resource for improvement of both common wheat and durum wheat. The co-segregated markers (Xdw05-Xdw11) developed here would be useful tools for marker-assisted selection (MAS) in breeding.
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