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KMID : 0545120130230101347
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Journal of Microbiology and Biotechnology
2013 Volume.23 No. 10 p.1347 ~ p.1356
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Metagenomic Analysis of Fungal Communities Inhabiting the Fairy Ring Zone of Tricholoma matsutake
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Kim Mi-Ae
Yoon Hyeok-Jun
You Young-Hyun
Kim Ye-Eun
Woo Ju-Ri
Seo Yeong-Gyo
Lee Gyeong-Min
Kim Young-Ja
Kong Won-Sik
Kim Jong-Guk
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Abstract
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Tricholoma matsutake, an ectomycorrhiza that has mutual relationships with the rootlet of Pinus denisflora, forms a fruiting body that serves as a valuable food in Asia. However, the artificial culture of this fungus has not been successful. Soil fungi, including T. matsutake, coexist with many other microorganisms and plants; therefore, complex microbial communities have an influence on the fruiting body formation of T. matsutake. Here, we report on the structures of fungal communities associated with the fairy ring of T. matsutake through the pyrosequencing method. Soil samples were collected inside the fairy ring zone, in the fairy ring zone, and outside the fairy ring zone. A total of 37,125 sequencing reads were obtained and 728 to 1,962 operational taxonomic units (OTUs) were observed in the sampling zones. The fairy ring zone had the lowest OTUs and the lowest fungal diversity of all sampling zones. The number of OTUs and fungal taxa inside and outside the fairy ring zone was, respectively, about 2 times and 1.5 times higher than the fairy ring. Taxonomic analysis showed that each sampling zone has different fungal communities. In particular, out of 209 genera total, 6 genera in the fairy ring zone, such as Hemimycena, were uniquely present and 31 genera, such as Mycena, Boletopsis, and Repetophragma, were specifically absent. The results of metagenomic analysis based on the pyrosequencing indicate a decrease of fungal communities in the fairy ring zone and changes of fungal communities depending on the fairy ring growth of T. matsutake.
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KEYWORD
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Tricholoma matsutake, Fungal communities, Metagenomic analysis, Pyrosequencing
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