@ARTICLE{TreeBASE2Ref16752, author = {Inga Morocko and Jamshid Fatehi}, title = {Molecular characterization of strawberry pathogen Gnomonia fragariae and its genetic relatedness to other Gnomonia species and members of Diaporthales}, year = {2007}, keywords = {}, doi = {}, url = {}, pmid = {}, journal = {Mycological Research}, volume = {}, number = {}, pages = {}, abstract = {Gnomonia fragariae is a poorly studied ascomycete belonging to Diaporthales. Originally G. fragariae was considered as a saprophyte occurring on dead tissues of strawberry plants. Recently this fungus was found in Latvia and Sweden, and it was proved to be the cause of severe root rot and petiole blight of strawberry. Thirteen isolates of this pathogen and several other Gnomonia species occurring on rosaceous hosts were characterized by molecular analysis using nucleotide sequences of partial large subunit (LSU) ribosomal RNA gene and the total ITS region. The homologous regions from relevant diaporthalean taxa available in the GenBank were also included and compared with the taxa sequenced in this study. Phylogenetic analyses revealed that G. fragariae, G. rubi, and Gnomonia sp. (CBS 850.79) were genetically different from G. gnomon, the type species of the genus, and other members of Gnomoniaceae. The analyses showed that G. fragariae and Hapalocystis were genetically very closely related, forming a phylogenetic clade, which is possibly presenting a new family in the Diaporthales. Morphological comparisons of the Gnomonia species on the basis of commonly used criteria for taxonomy of Diaporthales so far did not reveal any evident features for the polyphyletic status of Gnomonia.} }

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