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Applied and Environmental Microbiology, November 2005, p. 6584-6589, Vol. 71, No. 11
0099-2240/05/$08.00+0     doi:10.1128/AEM.71.11.6584-6589.2005
Copyright © 2005, American Society for Microbiology. All Rights Reserved.

Genetic and Phylogeographic Structures of the Symbiotic Fungus Tuber magnatum{dagger}

Andrea Rubini,1 Francesco Paolocci,1 Claudia Riccioni,1 Giovanni G. Vendramin,2 and Sergio Arcioni1*

National Research Council, Plant Genetics Institute, Perugia Division, Via Madonna Alta 130, I-06128 Perugia, Italy,1 National Research Council, Plant Genetics Institute, Florence Division, Via Madonna del Piano, I-50019 Sesto Fiorentino, Florence, Italy2

Received 9 December 2004/ Accepted 13 July 2005

The quality and market price of truffles vary with the species and, traditionally, the place of origin. The premium species Tuber magnatum produces white truffles and has a patchy distribution restricted to Italy and some Balkan areas. We used polymorphic microsatellites to evaluate 316 specimens grouped into 26 populations sampled across the species' geographic range to determine if natural populations of T. magnatum are genetically differentiated. We found that the southernmost and the northwesternmost populations were significantly differentiated from the rest of the populations. The simple sequence repeat data also could be used to make inferences about the postglacial T. magnatum expansion pattern. This study is the first to identify a genetic and phylogeographic structure in T. magnatum. The presence of a genetic structure can be of practical interest in tracing truffle populations according to their geographic origin for marketing strategies. Evidence for extensive outcrossing in field populations of T. magnatum also is provided for the first time.

* Corresponding author. Mailing address: National Research Council, Plant Genetics Institute, Perugia Division, Via Madonna Alta 130, I-06128 Perugia, Italy. Phone: 39 075 5014853. Fax: 39 075 5014869. E-mail: sergio.arcioni{at}igv.cnr.it.

{dagger} Supplemental material for this article may be found at http://aem.asm.org/.

Applied and Environmental Microbiology, November 2005, p. 6584-6589, Vol. 71, No. 11
0099-2240/05/$08.00+0     doi:10.1128/AEM.71.11.6584-6589.2005
Copyright © 2005, American Society for Microbiology. All Rights Reserved.



This article has been cited by other articles:

  • Paolocci, F., Rubini, A., Riccioni, C., Arcioni, S. (2006). Reevaluation of the Life Cycle of Tuber magnatum. Appl. Environ. Microbiol. 72: 2390-2393 [Abstract] [Full Text]  


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