title: Phylogenetic relationships between European and Chinese truffles based on parsimony and distance analysis of ITS sequences.
abstract: Phylogenetic relationships among truffle species from Europe and China were investigated through parsimony analysis of the ITS sequences. Three major clades were obtained among the species analysed. The so-called white truffles appeared polyphyletic since Tuber magnatum was grouped with brown truffles and not with the other white species (T. maculatum, T. borchii, T. dryophilum, T. puberulum). The black truffles investigated in this study, T. brumale, T. melanosporum, T. indicum and T. himalayense, were grouped in an independent clade. The Périgord black truffle T. melanosporum and the Chinese black truffles T. indicum and T. himalayense, were very closely related. The delimitation of these species was estimated by a distance analysis on several isolates collected from different geographic areas. In spite of intraspecific variations of the internal transcribed spacers (ITS) sequences, T. melanosporum and the Chinese black truffles can be unambiguously attributed to distinct taxa.
authors.affiliation: Equipe de Mycologie végétale, UMR 5546, Université Paul Sabatier, Pôle de Biotechnologie végétale, Chemin de Borde-Rouge, BP 17, Castanet-Tolosan, France. roux@cict.fr
authors.forename: C
authors.initials: C
authors.lastname: Roux
authors.forename: N
authors.initials: N
authors.lastname: Séjalon-Delmas
authors.forename: M
authors.initials: M
authors.lastname: Martins
authors.forename: A
authors.initials: A
authors.lastname: Parguey-Leduc
authors.forename: R
authors.initials: R
authors.lastname: Dargent
authors.forename: G
authors.initials: G
authors.lastname: Bécard
mesh_terms: D001203:Ascomycota / Q000145:classification* / Q000235:genetics*; D002681:China; D004262:DNA Restriction Enzymes / Q000378:metabolism; D004271:DNA, Fungal / Q000737:chemistry / Q000235:genetics*; D004275:DNA, Ribosomal / Q000737:chemistry / Q000235:genetics; D005060:Europe; D008969:Molecular Sequence Data; D010802:Phylogeny; D016133:Polymerase Chain Reaction / Q000379:methods; D012150:Polymorphism, Restriction Fragment Length
chemical_list: D004271:DNA, Fungal; D004275:DNA, Ribosomal; D004262:DNA Restriction Enzymes