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Genetic variation of

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Heterobasidion abietinum causes root and butt rot on Abies species occurring in central Europe and the Mediterranean Basin in a distribution extending from Spain in the west to Turkey and Caucasia in the east. To investigate the genetic diversity within H. abietinum, 95 isolates from different regions were analysed with 61 polymorphic molecular markers. The markers showed genetic differentiation amongst the H. abietinum populations. The most diversified population is that on A. pinsapo in southern Spain, which is isolated from gene flow with other populations. Lower but still significant differences were found amongst other European populations. Isolates from Turkey showed little diversification compared with the south European isolates from east of the Alps. The genetic structure of the H. abietinum populations in relation to postglacial recolonization of Abies is discussed.
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Document Type: Research Article

Affiliations: 1: Department of Agricultural Biotechnology, Plant Protection Section, University of Florence, Piazzale delle Cascine 28, I-50144 Florence, Italy 2: Department of Forest Environmental Science and Technologies, University of Florence, Via San Bonaventura 13, I-50145 Florence, Italy 3: Finnish Forest Research Institute, Vantaa Research Unit, PO Box 18, FI-01301 Vantaa, Finland

Publication date: 2011-08-01

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