Microfungi associated with a myrmecophyte Macaranga bancana

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  • Hirose Dai
    College of Pharmacy, Nihon University
  • Sakai Shoko
    Research Institute of Humanity and Nature Center for Ecological Research, Kyoto University
  • Itioka Takao
    Graduate School of Human and Environmental Studies, Kyoto University
  • Osono Takashi
    Center for Ecological Research, Kyoto University

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  • Microfungi associated with a myrmecophyte <i>Macaranga bancana</i>

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Microfungal populations associated with the domatia and food bodies of Macaranga bancana (Euphorbiaceae) and its obligate symbiotic ant Crematogaster borneensis were examined using culture-dependent methods. Forty-four fungal isolates were obtained and grouped into 15 operational taxonomic units (OTUs): 11 in Sordariomycetes and two each in Dothideomycetes and Eurotiomycetes. Hypocreales sp.3 (OTU3) was the commonest OTU isolated using the moist chamber method, followed by Paecilomyces sp. (OTU7), Chaetosphaeriaceae sp. (OTU10), Botryosphaeriaceae sp. (OTU12), and Aspergillus sp. (OTU15). Hypocreales sp.1 (OTU1) was the commonest OTU isolated by direct inoculation of the food bodies of M. bancana, darkened domatia materials, and ants and scale insects inside the domatia, followed by Hypocreales sp.3 (OTU3) and Chloridium sp. (OTU11). Molecular phylogenetic affinities of the 15 OTUs suggested that the closest relatives of three, nine, and 13 OTUs were known as insect-associated fungi, plant pathogens, and saprobic fungi, respectively. The possible role of these fungi is discussed.

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  • Tropics

    Tropics 22 (1), 19-25, 2013

    日本熱帯生態学会

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