@ARTICLE{TreeBASE2Ref22516, author = {Pedro W. Crous and William Quaedvlieg and Kamil Sarpkaya and Canan Can and Ali Erkilic}, title = {Septoria-like pathogens causing leaf and fruit spot of pistachio}, year = {2013}, keywords = {Capnodiales, coelomycete, Pistachia, RPB2}, doi = {10.5598/imafungus.2013.04.02.04}, url = {http://www.imafungus.org/}, pmid = {}, journal = {IMA Fungus}, volume = {4}, number = {2}, pages = {187--195}, abstract = {Several species of Septoria are associated with leaf and fruit spot of pistachio (Pistacia vera), though their identity has always been confused, making identifcation problematic. The present study elucidates the taxonomy of the Septoria spp. associated with pistachio, and distinguishes four species associated with this host genus. Partial nucleotide sequence data for fve gene loci, ITS, LSU, EF-1α, RPB2 and Btub were generated for a subset of isolates. Cylindroseptoria pistaciae, which is associated with leaf spots of Pistacia lentiscus in Spain, is characterized by pycnidial conidiomata that give rise to cylindrical, aseptate conidia. Two species of Septoria s. str. are also recognised on pistachio, S. pistaciarum, and S. pistaciae. The latter is part of the S. protearum species complex, and appears to be a wide host range pathogen occurring on hosts in several different plant families. Septoria pistacina, a major pathogen of pistachio in Turkey, is shown to belong to Pseudocercospora, and not Septoria as earlier suspected. Other than for its pycnidial conidiomata, it is a typical species of Pseudocercospora based on its smooth, pigmented conidiogenous cells and septate conidia. This phenomenon has also been observed in Pallidocercospora, and seriously questions the value of conidiomatal structure at generic level, which has traditionally been used to separate hyphomycetous from coelomycetous ascomycetes. Other than DNA barcodes to facilitate the molecular identifcation of these taxa occurring on pistachio, a key is also provided to distinguish species based on morphology.} }

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