Genetic analysis of forest tree populations: isolation of DNA from spruce and fir apices |
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Authors: | J Kreike |
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Institution: | (1) Institute of Microbiology and Genetics, University of Vienna, Althanstrasse 14, A-1090 Vienna, Austria |
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Abstract: | A method is described for the isolation of DNA from spruce and fir, starting with 3 to 5 apices (5 mg material). Apices are prepared manually from dormant buds harvested in summer and autumn, which are homogenized in 30 l buffer containing 1% SDS. The DNA is extracted with phenol and precipitated with ethanol. Agarose gel electrophoresis and Southern hybridization show that its molecular length is ca. 30–40 kb and that it is readily digested with various restriction enzymes. The method is very fast, it does not need CsCl centrifugation and is therefore suited for the analysis of large numbers of individual trees. Moreover, the buds can be collected all over the year. The yield of the method is up to 30 g of high molecular weight DNA, enough to do several digests and hybridizations. |
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Keywords: | apex Abies alba DNA preparation forest trees genetic variation Picea abies |
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