Targeted development of microsatellite markers from the defined region of bovine Chromosome 6q21-31 |
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Authors: | Rosemarie Weikard T. Goldammer Ch. Kühn W. Barendse M. Schwerin |
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Affiliation: | (1) Forschungsinstitut für die Biologie landwirtschaftlicher Nutztiere, Forschungsbereich Molekularbiologie, Wilhelm-Stahl-Allee 2, D-18196 Dummerstorf, Germany, DE;(2) CSIRO Tropical Agriculture, Gehrman Labs, University of Queensland, St. Lucia 4072, Australia, AU |
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Abstract: | A methodical strategy for the isolation of microsatellite markers specific for targeted regions of bovine chromosomes is presented. The procedure involves directed microdissection of one defined subchromosomal area, its DOP-PCR-amplification and cloning. With this approach, a library specific to the BTA 6q21-31 chromosomal region was constructed. Eleven unique microsatellite-containing sequences were isolated, converted into sequence-tagged microsatellite sites, and characterized concerning their species-specific origin. Seven primer pairs generated bovine-specific PCR products and provided a set of microsatellite markers that generally revealed high informativity in the HF breed. Linkage analysis assigned six of them to their predefined subchromosomal origin on BTA 6 corresponding to the specific rehybridization signal of the DOP-PCR product generated from the microdissected chromosome area 6q21-31. The results underline the usefulness of the BTA 6q21-31 library for targeted isolation of unique sequences that are specific for the dissected chromosomal region as demonstrated here by the isolation of microsatellite markers. Received: 27 March 1997 / Accepted: 14 July 1997 |
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