Phylogenetic relationships of <i>Phaeochorella</i> <i>parinarii</i> and recognition of a new family, Phaeochorellaceae (Diaporthales)

<p>Species of <i>Phaeochorella</i> are biotrophic leaf parasites with a tropical distribution, traditionally accepted in the family Phyllachoraceae, Phyllachorales in classifications based on morphological characters. Phylogenetic evidence presented here resolves the relationship of <i>Phaeochorella</i> within the Sordariomycetes, based on a multilocus analysis of partial nuc rDNA large subunit (28S) and internal transcribed spacers (ITS1-5.8S-ITS2 = ITS), the DNA-directed RNA polymerase II second largest subunit (<i>RPB2</i>), and the translation elongation factor 1-α (<i>TEF1-α</i>) gene. Phylogenetic analyses indicate that <i>Phaeochorella</i> belongs to the Diaporthales rather than the Phyllachorales. <i>Phaeochorella parinarii</i>, the type species of the genus, present on native hosts from the Brazilian Cerrado, forms a unique clade with a species of <i>Phaeoappendicospora</i> with high support. Thus, a new family, Phaeochorellaceae, Diaporthales, including both genera, is herein proposed. With the exception of <i>P. parinarii</i> and <i>P. zonata</i>, all other species in <i>Phaeochorella</i> (<i>P. artocarpi, P. ciliata, P. machaerii</i>) were excluded from the genus.</p>