Abstract
The teleomorph of Petrakia echinata (Peglion) Syd. & P. Syd. on leaves of Acer pseudoplatanus is described based on field collections, culture studies and ITS sequencing and was assigned to the genus Mycodidymella C.Z. Wei, Y. Harada & K. Katumoto. In addition, a Mycopappus anamorph and a presumed spermatial Phoma stage were observed and conspecificity with P. echinata was confirmed by culture morphology and ITS sequencing. The phylogenetic relationships between the Mycodidymella teleomorph of P. echinata and related taxa were studied using LSU nDNA sequences. The fungus causes brown spots on the leaves of the host plant, known as “Petrakia leaf blotch of sycamore maple”.
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Acknowledgments
We thank the curator of the Museum Harmas Jean-Henri Fabre, Vaucluse, France, and Pierre-Arthur Moreau, Université Lille Nord de France, Lille, France, for their help with some herbarium specimens, Reinhard Berndt, the curator of the herbarium ZT, for taxonomic advice, Lioba Paul for specimen collections and improvements of the text, Angelo Duò, ETH Zurich, for DNA extraction and sequencing, and Julia Coffin, ETH Zurich, for linguistic revision of the manuscript.
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Butin, H., Holdenrieder, O. & Sieber, T.N. The complete life cycle of Petrakia echinata . Mycol Progress 12, 427–435 (2013). https://doi.org/10.1007/s11557-012-0850-x
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DOI: https://doi.org/10.1007/s11557-012-0850-x