Abstract
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.
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