@ARTICLE{TreeBASE2Ref22604, author = {Ajda Medjedović and Jana Frank and Hans-Josef Schroers and Bernhard Oertel and Jean Carlson Batzer}, title = {Peltaster cerophilus is a new species of the apple sooty blotch complex from Europe}, year = {2013}, keywords = {apple summer disease, coelomycetes, Dothideomycetes, SBFS, sooty blotch, taxonomy}, doi = {}, url = {http://}, pmid = {}, journal = {Mycologia}, volume = {}, number = {}, pages = {}, abstract = {Adopting the currently used concept for the genus Peltaster, the sooty blotch fungus Peltaster cerophilus is newly described from the cuticle of ripening or ripe apple fruits. It forms a punctuate phenotype consisting of superficially formed pycnothyria and a superficial mycelial mat consisting of a net of brown or brownish black hyphae. The pycnothyria are olivaceous brown to brown but have a spot in their center that is less strongly pigmented. Pycnothyria on the holotype of P. fructicola are homogeneously pigmented. On synthetic nutrient-poor agar, P. cerophilus is largely indistinguishable from P. fructicola. It forms delicate, spreading hyphae and intercalary conidiogenous cells with short, apically thick-walled, lateral conidiogenous necks forming blastic, unpigmented, 1-celled conidia in basipetal succession. Conidia can swell and become 1-septate. The species shows microcyclic conidiation in proximate parts of colonies. DNA sequence analyses based on the ITS and the partial nuclear small and large subunit ribosomal RNA genes, the partial mitochondrial small subunit rRNA gene and the partial translation elongation factor 1-α gene support the distinction of the European P. cerophilus from P. fructicola, which is known from North America and Europe. The nuclear small ribosomal RNA subunit gene sequences of P. cerophilus contain two group I introns at locations known to accommodate introns in certain other, unrelated taxa. One of these, for which the code ′SSU-1506 intron′ was adopted, is 1459 base-pairs long and located between the universal primer sites ITS5 and ITS1. Similar or positionally differing introns were encountered also in three currently undescribed Peltaster species. Representative strains of Peltaster fructicola did not accommodate introns in the nuclear small subunit ribosomal RNA gene.} }

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