Abstract
A fungus tentatively identified as Lophodermium sp. was repeatedly isolated from living secondary needles of mountain pine (Pinus mugo) in the Giant Mountains of Poland. Needles showed symptoms of yellow spots, gradual discolouration and premature falling in July. Thin black zone lines, subepidermal conidiomata and partially subepidermal ascomata morphologically similar to L. pinastri occurred on fallen needles in litter below the same trees. Evidence from internal transcribed spacers of rDNA and the gene for actin showed that strains isolated from symptom-bearing needles and fruiting structures were identical, and differed from other Lophodermium species known from pine, including L. pinastri. The fungus differs subtly from L. pinastri, for example, in the lengths of its conidiomata, ascomata and asci, but can be reliably distinguished only by molecular data. Known only on mountain pine from the Giant Mountains, it is described here as L. corconticum sp. nov.
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Acknowledgments
The project was supported by Institutional Support for Science and Research of the Ministry of Education, Youth and Sports of the Czech Republic and by the National Science Centre of Poland (grant number N304/069940). We wish to thank Agata Kaczmarek from the Division of Phytopathology and Mycology of the Plant Protection Department at WUELS for her help in preparation of the mycological analyses, and to Wlodzimierz Kita from the Division of Phytopathology and Mycology of the Plant Protection Department at WUELS for his help in collection of needle samples.
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Koukol, O., Pusz, W. & Minter, D. A new species of Lophodermium on needles of mountain pine (Pinus mugo) from the Giant Mountains in Poland. Mycol Progress 14, 23 (2015). https://doi.org/10.1007/s11557-015-1038-y
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DOI: https://doi.org/10.1007/s11557-015-1038-y