Identification of Japanese Astraeus, based on morphological and phylogenetic analyses

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  • Fangfuk Wanwisa
    Interdisciplinary Graduate School of Science and Technology, Shinshu University, Japan
  • Petchang Ratchanee
    Department of Applied Biology, Faculty of Science and Technology, Uttaradit Rajabhat University, Thailand
  • To-anun Chaiwat
    Department of Plant Pathology, Faculty of Agriculture, Chiang Mai University, Thailand
  • Fukuda Masaki
    Interdisciplinary Graduate School of Science and Technology, Shinshu University, Japan Department of Bioscience and Biotechnology, Faculty of Agriculture, Shinshu University, Japan
  • Yamada Akiyoshi
    Interdisciplinary Graduate School of Science and Technology, Shinshu University, Japan Department of Bioscience and Biotechnology, Faculty of Agriculture, Shinshu University, Japan

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  • Identification of Japanese <i>Astraeus</i>, based on morphological and phylogenetic analyses

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<p>To clarify the diversity of Astraeus in Japan, 35 collections of Astraeus basidiomata from Japan and Thailand were examined for their morphological characteristics and the nucleotide sequences of the rDNA ITS region and compared with several worldwide Astraeus species. Japanese Astraeus specimens were separated into two groups based on basidiome size, shape of exoperidium, and ornamentation and size of basidiospores. The phylogenetic tree analyses supported the separation, and the morphological groups belonged to different clades. The Japanese Astraeus group 1, morphologically matched to Astraeus hygromerticus var. koreanus, showed the closest phylogenetic relationship with Astraeus hygrometricus from North American and Mediterranean regions, suggesting that the Astraeus group 1 can be indentified as A. hygrometricus var. koreanus. Another Astraeus group, group 2, morphologically matched to A. hygrometricus s.l., showed a distinct monophyletic clade that was separated from A. hygrometricus complexes, indicating an undescribed species.</p>

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  • Mycoscience

    Mycoscience 51 (4), 291-299, 2010

    一般社団法人 日本菌学会

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