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Open AccessArticle

Genetic Structure and Phylogeography of Tuber magnatum Populations

1
National Research Council, Institute of Biosciences and Bioresources – Perugia Division, Via Madonna Alta n. 130, 06128 Perugia, Italy
2
Department of Life, Health & Environmental Sciences, University of L’Aquila, I 67010 Coppito-L’Aquila, Italy
*
Author to whom correspondence should be addressed.
Diversity 2020, 12(2), 44; https://doi.org/10.3390/d12020044
Received: 31 December 2019 / Revised: 21 January 2020 / Accepted: 22 January 2020 / Published: 24 January 2020
(This article belongs to the Special Issue Fungal Diversity in the Mediterranean Area)
The ectomycorrhizal fungus Tuber magnatum produces the white truffle appreciated worldwide for its unique aroma. With respect to other Tuber spp. of economic interest, T. magnatum presents a narrower geographical range. This species has, in fact, long been considered endemic to Italy. However, over the last few decades several reports have documented the presence of white truffles in different Mediterranean countries and in particular in various areas of south-east Europe. In this study, samples from several Pannonian and Balkan countries such as Hungary, Serbia, Romania, Bulgaria and Greece have been collected and genotyped with microsatellite markers and the data merged with those available for Italian populations. Our objectives were to test whether Italian and south-east European populations are differentiated and to evaluate the genetic diversity of T. magnatum all over its distributional range. We show the genetic structure of T. magnatum populations with the differentiation of four main groups: northern Italy, central-northern Italy, southern Italy and the Balkan/Pannonian region. The present study allowed us to refine the evolutionary history of T. magnatum and track the possible post-glacial expansion route of this species. The assessment of T. magnatum’s genetic structure is not only of scientific relevance, but it is also important for the conservation and market traceability of this prestigious fungus.
Keywords: microsatellite; SSR; white truffle; genetic diversity microsatellite; SSR; white truffle; genetic diversity
MDPI and ACS Style

Belfiori, B.; D'Angelo, V.; Riccioni, C.; Leonardi, M.; Paolocci, F.; Pacioni, G.; Rubini, A. Genetic Structure and Phylogeography of Tuber magnatum Populations. Diversity 2020, 12, 44.

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