NDLI: Molecular cytogenetic characterization of a new wheat–rye 4R chromosome translocation line resistant to powdery mildew

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Molecular cytogenetic characterization of a new wheat–rye 4R chromosome translocation line resistant to powdery mildew

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Molecular cytogenetic characterization of a new wheat–rye 4R chromosome translocation line resistant to powdery mildew

Content Provider	Springer Nature Link
Author	An, Diaoguo Zheng, Qi Zhou, Yilin Ma, Pengtao Lv, Zhenling Li, Lihui Li, Bin Luo, Qiaoling Xu, Hongxing Xu, Yunfeng
Copyright Year	2013
Abstract	Rye is an important and valuable gene resource for wheat improvement. However, due to extensive growing of cultivars with disease resistance genes from short arm of rye chromosome 1R and coevolution of pathogen virulence and host resistance, these cultivars successively lost resistance to pathogens. Identification and deployment of new resistance gene sources in rye are, therefore, of especial importance and urgency. A new wheat–rye line, designated as WR41-1, was produced through distant hybridization and chromosome engineering protocols between common wheat cultivar Xiaoyan 6 and rye cultivar German White. It was proved to be a new wheat–rye T4BL·4RL and T7AS·4RS translocation line using sequential genomic in situ hybridization (GISH), multicolor fluorescence in situ hybridization (mc-FISH), and expressed sequence tag-simple sequence repeat (EST-SSR) marker analysis. WR41-1 showed high levels of resistance to powdery mildew (Blumeria graminis f. sp. tritici, Bgt) pathogens prevalent in China at the adult growth stage and 13 of 23 Bgt isolates tested at the seedling stage. According to its resistant pattern to 23 different Bgt isolates, WR41-1 may possess new gene(s) for resistance to powdery mildew, which differed from previously identified and known powdery mildew genes from rye (Pm7, Pm8, Pm17, and Pm20). In addition, WR41-1 was cytologically stable, had a desirable fertility, and is expected to be useful in wheat improvement.
Starting Page	419
Ending Page	432
Page Count	14
File Format	PDF
ISSN	09673849
Journal	Chromosome Research
Volume Number	21
Issue Number	4
e-ISSN	15736849
Language	English
Publisher	Springer Netherlands
Publisher Date	2013-07-09
Publisher Place	Dordrecht
Access Restriction	One Nation One Subscription (ONOS)
Subject Keyword	Secale cereale chromosome translocation Blumeria graminis GISH and FISH EST-based marker wheat Cell Biology Human Genetics Animal Genetics and Genomics Plant Genetics & Genomics
Content Type	Text
Resource Type	Article
Subject	Genetics

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