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Title: Microfungi associated with withering willow wood in ground contact near Syowa Station, East Antarctica for 40 years
Authors: Hirose, Dai
Tanabe, Yukiko
Uchida, Masaki
Kudoh, Sakae
Osono, Takashi
Author's alias: 大園, 享司
Keywords: Continental Antarctica
Fungi
Root endophyte
Salix
Syowa Station
Issue Date: Jun-2013
Publisher: Springer-Verlag
Journal title: Polar Biology
Volume: 36
Issue: 6
Start page: 919
End page: 924
Abstract: Data are rather lacking on the diversity of microfungi associated with exotic plant substrates transported to continental Antarctica. We examined the diversity and species composition of microfungi associated with withering woody shoots of saplings of Salix spp. (willows) transplanted and in ground contact near Syowa Station, East Antarctica for more than 40 years. The willow saplings originated from Hokkaido, Northern Japan, and were experimentally transplanted in 1967–1968, but died within a few years. Dead willow shoots, unbranched and standing on bare ground for approximately 50 years, were used for the isolation of fungi with the surface disinfection method. A total of 43 isolates were retrieved from 32 (78 %) of the 41 shoots tested. The fungal isolates were classified into 18 molecular operational taxonomic units (MOTUs) based on the similarity of rDNA ITS sequences at the 97 % criterion. Leotiomycetes was the most common class in terms of the number of isolates and MOTUs, followed by Dothideomycetes, Sordariomycetes, and Eurotiomycetes. Molecular phylogenetic affinities suggested that the closest relatives of the MOTUs were saprobic and root-associated fungi. The result of the present study suggested that Cadophora luteo-olivacea is widespread in soils throughout Antarctica and likely indigenous.
Rights: The final publication is available at Springer via http://dx.doi.org/10.1007/s00300-013-1320-x
This is not the published version. Please cite only the published version. この論文は出版社版でありません。引用の際には出版社版をご確認ご利用ください。
URI: http://hdl.handle.net/2433/189818
DOI(Published Version): 10.1007/s00300-013-1320-x
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