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Mycol Res. 2006 Sep;110(Pt 9):1034-45. Epub 2006 Aug 22.

Phylogenetic and populational study of the Tuber indicum complex.

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INRA, Unité mixte de recherches 1136, INRA/Université Henri Poincaré, Nancy I, Interactions arbres micro-organismes, centre INRA de Nancy, F-54210, Champenoux, France.


When examined using SEM, Chinese samples of Tuber indicum and T. sinense displayed the same ascospore ornamentation as that of T. pseudohimalayense, T. indicum, collected in India by Duthie in 1899, and samples renamed T. himalayense in 1988. The different authors who named the four taxa (T. indicum, T. himalayense, T. sinense, T. pseudohimalyense) described differences in the surface of the peridium which could be considered as usual variations within a single species. We consider T. indicum, T. himalayense, T. sinense and T. pseudohimalayense as one species, T. indicum. Within this T. indicum complex, according to ITS and beta-tubulin sequences, there are two groups in China, which could be considered as geographical ecotypes. This study is the first to identify a genetic and phylogeographical structure within the Chinese Tuber species.

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