Abstract
Through the morphological and molecular examinations of Melampsora species on willows, we clarified the taxonomic identity of the rust specimens on Salix bakko, S. hultenii and S. leucopithecia from Japan and described the following rust fungus as a new species, Melampsora salicis-bakko. This rust fungus resembled M. caprearum in morphology of teliospores, but it differed from M. caprearum mainly in the density of spines on the urediniospores. Molecular phylogenetic analyses using the rDNA ITS region (complete ITS1, 5.8S rRNA gene and ITS2) revealed that M. salicis-bakko was monophyletic, and that this rust fungus was distinct from other Melampsora species, including M. caprearum.
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Acknowledgments
We express our gratitude to Dr. Ming-Hao Pei (Rothamsted Research, Harpenden, Hertfordshire, UK), Dr. Zhi-Min Cao (Forestry College, Northwest A & F University, Yangling, China) and Dr. Tsuyoshi Hosoya (National Museum of Nature and Science, Tsukuba, Japan) for providing dried specimens for this study.
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Zhao, P., Wang, QH., Tian, CM. et al. Melampsora salicis-bakko, a new species on willows in Japan evidenced by morphological and molecular phylogenetic analyses. Mycol Progress 15, 32 (2016). https://doi.org/10.1007/s11557-016-1175-y
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DOI: https://doi.org/10.1007/s11557-016-1175-y