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Three new species of Hyphodontia with peg-like hyphal aggregations

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Abstract

Descriptions, illustrations and phylogenetic analyses for three new taxa of Hyphodontia (Basidiomycota) are provided. Hyphodontia astrocystidiata sp. nov. was collected from warm-temperate mountain forests of Taiwan; H. microfasciculata sp. nov. was found in subtropical Taiwan, southern China, and northern Vietnam; H. vietnamensis sp. nov. was described from northern Vietnam. All three species have sterile projecting peg-like structures, consisting of encrusted hyphae. Hyphodontia astrocystidiata is characterized by Resinicium-like astrocystidia on subicular hyphae and astrocystidia-like hyphal ends in hymenium. Hyphodontia microfasciculata is distinguished by its small-sized ellipsoid spores and fine emergent fascicles composed of thin-walled, flexuous hyphae. The features of H. vietnamensis are subulate cystidia, cylindrical spores, and projecting, densely arranged slender clusters of acuminate hyphae. The morphology of crystal deposits on projecting hyphae in these three species was studied by means of scanning electron microscopy. Molecular phylogeny analyses were performed by maximum parsimony and Bayesian methods, both based on sequences of the internal transcribed spacer region of nuclear ribosomal DNA. The phylograms from both analyses confirm independent specific status of H. microfasciculata and H. vietnamensis. The former species sits in a subclade with Hyphodontia sambuci, the latter species is in another subclade with H. crustosa. Hyphodontia astrocystidiata is placed close to Schizopora paradoxa, but the two species are distinct in terms of morphology.

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Acknowledgments

The work was financially supported by National Science Council of the Republic of China (grants No. NSC 98-2621-B-178-002-MY3 and NSC 100-2811-B-178-001). The authors are much indebted to David Mitchel (Northern Ireland Fungus Group, Belfast) for improvement of the English. We are acknowledged to the two anonymous reviewers for critical consideration of the manuscript. Our thanks go to Ms S.Z. Chen (TNM herbarium) for help in the management of the collections studied, and to Ms S.K. Hu (Department of Geology, National Museum of Natural Science) for assistance in obtaining SEM photographs.

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Authors and Affiliations

  1. Department of Biotechnology, Paleski State University, Dnyaprouskai flatylii str. 23, BY-225710, Pinsk, Belarus

    Eugene Yurchenko

  2. Department of Biology, National Museum of Natural Science, Taichung, Taiwan, Republic of China

    Sheng-Hua Wu

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  1. Eugene Yurchenko
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  2. Sheng-Hua Wu
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Correspondence to Eugene Yurchenko.

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Yurchenko, E., Wu, SH. Three new species of Hyphodontia with peg-like hyphal aggregations. Mycol Progress 13, 533–545 (2014). https://doi.org/10.1007/s11557-013-0935-1

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