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      Combined molecular and morphological data for improving phylogenetic hypothesis in Dacrymycetes

      1 , 2 , 3 , , 1 , 4
      Mycologia
      Mycological Society of America

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          Abstract

          We analyzed the DNA sequences of four gene regions, 28S and 18S rDNA, the ITS region and rpb2, to obtain a high resolution phylogenetic tree of Dacrymycetes. In addition, we comparatively studied micro- and macromorphological characteristics of representative species. The traditional generic classification based on morphological characteristics was not reflected by our molecular phylogenies. Ancestral state reconstructions indicated that the morphology of basidia and clamp connections are evolutionarily stable. In contrast, basidiocarps and basidiospore septation patterns appear variable. Dacrymyces unisporus shares the dolipores with non-perforate parenthesomes typical of other dacrymycetous taxa but is a unique species having predominantly non-bifurcate basidia and subglobose to ovoid basidiospores with transverse and longitudinal septa. In molecular phylogenies this species is a member of Dacrymycetes but always occupies a sister position in relation to the rest of the Dacrymycetes. Based on our results we propose a new genus, Unilacryma, for D. unisporus. For proper accommodation of this taxon, we introduce the family Unilacrymaceae and the order Unilacrymales.

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          Author and article information

          Journal
          Mycologia
          Mycologia
          Mycological Society of America
          0027-5514
          1557-2536
          January 20 2017
          September 2013
          January 20 2017
          September 2013
          : 105
          : 5
          : 1110-1125
          Affiliations
          [1 ] Fungus/Mushroom Resource and Research Center, Faculty of Agriculture, Tottori University, 4-101 Minami, Koyama, Tottori 680-8553, Japan
          [2 ] College of Pharmacy, Nihon University, 7-7-1 Narashinodai, Funabashi, Chiba 274-8555, Japan
          [3 ] Institute of Evolution and Ecology, Organismic Botany, Eberhard-Karls-University Tübingen, Auf der Morgenstelle 1, 72076 Tübingen, Germany
          [4 ] 1787-7 Motohara, Sanada, Ueda, Nagano 386-2202, Japan
          Article
          10.3852/12-147
          22962355
          277e65ca-89e1-4664-bc1e-466b5d203e4e
          © 2013
          History

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