Saprobic Botryosphaeriaceae, including Dothiorella italica sp. nov., associated with urban and forest trees in Italy

A collection of saprobic botryosphaeriaceous isolates (from dead aerial branches, stems, and dead leaves) was obtain from urban and forest tree species in Italy. A total of 52 isolates were characterized by multi-locus sequence analysis of the internal transcribed spacer region (ITS) and partial sequences of the translation elongation factor 1-alpha (TEF). According to morphological characteristics and analysis of multi-gene sequence data, 14 species in Botryosphaeriaceae belonging to five genera, viz. Botryosphaeria, Diplodia, Dothiorella, Eutiarosporella and Neofusicoccum were identified, including Dothiorella italica sp. nov. The other known species isolated were Botryosphaeria dothidea, B. auasmontanum, Diplodia alatafructa, Di. crataegicola, Di. mutila, Di. sapinea, Di. seriata, Dothiorella omnivora, Do. rhamni, Do. sarmentorum, Do. sempervirentis, Eutiarosporella dactylidis and Neofusicoccum parvum. Of these, Botryosphaeria dothidea and Diplodia seriata were the most prevalent species among the isolates. Several new host-fungus relationships were established. This study indicates the fungal family Botryosphaeriaceae seems to be common and widespread on a broad range of hosts in Italy.

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