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Citation for Study 10086

About Citation title: "Taxonomic reconsideration of a sequestrate fungus, Octaviania columellifera, with the proposal of a new genus, Heliogaster, and its phylogenetic relationships in the Boletales".
About This study was previously identified under the legacy study ID S2426 (Status: Published).

Citation

Orihara T., Sawada F., Ikeda S., Yamato M., Tanaka C., Shimomura N., Hashiya M., & Iwase K. 2009. Taxonomic reconsideration of a sequestrate fungus, Octaviania columellifera, with the proposal of a new genus, Heliogaster, and its phylogenetic relationships in the Boletales. Mycologia, 102(1): 108-121.

Authors

  • Orihara T. Phone +81-465-21-1515
  • Sawada F.
  • Ikeda S.
  • Yamato M.
  • Tanaka C.
  • Shimomura N.
  • Hashiya M.
  • Iwase K.

Abstract

During taxonomic revision of the genus <I>Octaviania</I> in Japan, we examined herbarium and fresh specimens of <I>O. columellifera</I> and <I>O. asterosperma</I> sensu S. Yoshimi & Y. Doi using morphological and molecular techniques. These two species were identical in both macro- and micromorphological characters, and were clearly different from the generally known <I>O. asterosperma</I>. The identity of the two species and their distinctness from <I>O. asterosperma</I> was further supported by both nuclear large subunit and ITS rDNA phylogeny. The molecular analyses also revealed that <I>O. columellifera</I> shares its lineage with the boletoid mushroom-forming <I>Xerocomus chrysenteron</I> complex, and that it does not form a monophyletic clade with other <I>Octaviania</I> species. Our morphological reevaluation, including transmission electron microscopic observation of basidiospores, clarified the taxonomic boundary between <I>O. columellifera</I> and other Japanese <I>Octaviania</I> species. Accordingly, we propose a new genus, <I>Heliogaster</I>, for <I>O. columellifera</I> with designation of the lectotype. We discuss phylogenetic relationships with <I>Octaviania sensu stricto</I> species and the closely related boletoid (pileate-stipitate) fungi, generic characters of <I>Heliogaster</I>, and intraspecific phylogeny.

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  • Canonical resource URI: http://purl.org/phylo/treebase/phylows/study/TB2:S10086
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