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Molecular systematics of the Phyllachorales (ascomycota, fungi) based on 18S ribosomal DNA sequences

2003; Instituto de Tecnologia do Paraná (Tecpar); Volume: 46; Issue: 3 Linguagem: Inglês

10.1590/s1516-89132003000300002

1678-4324

Denise Wanderlei-Silva, Eduardo Ramalho Neto, Richard T. Hanlin,

Yeasts and Rust Fungi Studies

In order to evaluate the monophyly of the Phyllachorales from a molecular standpoint and elucidate its phylogenetic relationships with other orders, a segment of the 18S rRNA gene from several representatives of the Phyllachorales, including species of Glomerella, Phyllachora, Coccodiella (=Coccostroma), Sphaerodothis, Ophiodothella, as well as Magnaporthe was sequenced. Maximum Parsimony analysis revealed that the Phyllachorales was a polyphyletic assemblage of taxa. None of the other members of the Phyllachorales, which produced either a clypeus or stroma, clustered with Glomerella. Of the taxa examined, was Coccodiella the closest relative of Phyllachora. Magnaporthe was closely related to the Diaporthales. Our 18S rDNA data highly supported Glomerella being accommodated in a separate family.