phylogenetic relationships of anamorphic form of some pleosporalean genera based on analysis of its rdna and rpb2

Pleosporaceae is an important dothideomycetes family. to elucidate relationships among some selected anamorphic pleosporalean taxa, their internal transcribed spacer (its) and rna polymerase second largest subunit (rpb2) were sequenced and compared. phylogenetic analyses of both its and rpb2 regions were almost similar and generally congruent with previously described phylogenies and morphology based classification schemes. its was inefficient to show the taxonomic placement of some species, especially alternaria species but rpb2 was appropriate for this purpose.