Staff Publications

Staff Publications

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    'Staff publications' is the digital repository of Wageningen University & Research

    'Staff publications' contains references to publications authored by Wageningen University staff from 1976 onward.

    Publications authored by the staff of the Research Institutes are available from 1995 onwards.

    Full text documents are added when available. The database is updated daily and currently holds about 240,000 items, of which 72,000 in open access.

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    Comparison of the chromosome maps around a resistance hot spot on chromosome 5 of potato and tomato using BAC-FISH painting
    Achenbach, U.C. ; Tang, X.M. ; Ballvora, A. ; Jong, H. de; Gebhardt, C. - \ 2010
    Genome 53 (2010)2. - ISSN 0831-2796 - p. 103 - 110.
    in-situ hybridization - zea-mays l. - broad-spectrum resistance - globodera-pallida - phytophthora-infestans - pachytene chromosomes - gene-cluster - metaphase chromosomes - arabidopsis-thaliana - solanum-spegazzinii
    Potato chromosome 5 harbours numerous genes for important qualitative and quantitative traits, such as resistance to the root cyst nematode Globodera pallida and the late blight fungus, Phytophthora infestans. The genes make up part of a “hot spot” for resistances to various pathogens covering a genetic map length of 3 cM between markers GP21 and GP179. We established the physical size and position of this region on chromosome 5 in potato and tomato using fluorescence in situ hybridization (FISH) on pachytene chromosomes. Five potato bacterial artificial chromosome (BAC) clones with the genetically anchored markers GP21, R1-contig (proximal end), CosA, GP179, and StPto were selected, labeled with different fluorophores, and hybridized in a five-colour FISH experiment. Our results showed the location of the BAC clones in the middle of the long arm of chromosome 5 in both potato and tomato. Based on chromosome measurements, we estimate the physical size of the GP21–GP179 interval at 0.85 Mb and 1.2 Mb in potato and tomato, respectively. The GP21–GP179 interval is part of a genome segment known to have inverted map positions between potato and tomato.
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