New records and hosts for Exserohilum and Pyrenophora species in Iran
In a taxonomic study of Exserohilum and Pyrenophora species in Iran, infected plant materials were obtained from different provinces (West and East Azerbaijan, Guilan, Mazandaran, Isfahan and Khuzestan), during the years 2013–16. A total number of fourty eight isolates including 26 Exserohilum and 22 Pyrenophora isolates were obtained from various plants. The internal transcribed spacer (ITS) region and GPDH (Glyceraldehyde-3-phosphate dehydrogenase) gene were amplified and sequenced for representative isolates. Based on a combination of morphological characteristics and sequence data, six species of Exserohilum viz., E. monoceras (three isolates), E. oryzicola (five isolates), E. rostratum (12 isolates), E. turcicum (six isolates),and Pyrenophora viz., P. dictyoides (one isolate) P. graminea (19 isolates), and P. lolii (two isolates) were identified. Among the species, E. oryzicola is new species for the mycobiota of Iran. Full description and illustration for the new species are provided herewith. New hosts are also reported for E. rostratum,and P. lolii.
GPDH , ITS , Morphology , phylogeny , Taxonomy
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