Diversity of Culturable Chitinolytic Bacteria from Rhizospheres of Agronomic Plants in Japan
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概要
- 論文の詳細を見る
A total of 100 isolates of chitinolytic bacteria were obtained from the rhizospheres of various agronomic plants, and the 16S rRNA gene sequences of these isolates were determined. Phylogenetic analyses revealed that 81 isolates belonged to the classes Betaproteobacteria (39 isolates) and Gammaproteobacteria (42 isolates). Of the remaining 19 isolates, 16 belonged to the phylum Firmicutes. Clustering analysis identified 6 and 3 operational taxonomic units (OTUs) in Gammaproteobacteria and Betaproteobacteria, respectively, at the genus level. The majority of chitinolytic bacteria in Gammaproteobacteria belonged to the genera Serratia, Stenotrophomonas, and Lysobacter (14, 15, and 7 isolates, respectively) while those in Betaproteobacteria belonged to the genus Mitsuaria (37 isolates). The 16 isolates placed in Firmicutes belonged to 2 genera, Paenibacillus and Bacillus (8 isolates each). The isolates in the remaining OTUs belonged to the genera Erwinia, Aeromonas, Pseudomonas, Achromobacter, Flavobacterium, and Microbacterium, in less abundance. These results showed a wide distribution of culturable chitinolytic bacteria in the rhizospheres of various agronomic plants. Considering the potential antagonistic activity of chitinolytic enzymes against phytopathogenic fungi, which is exhibited by fungal cell wall degradation, the above-mentioned native chitinolytic bacteria in rhizospheres could potentially be utilized for the biological control of soil-borne phytopathogenic fungi.
著者
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IKEDA TSUKASA
Department of Fermentation Technology, Hiroshima University
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SAWADA Hiroyuki
National Institute for Agro-Environmental Sciences
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Morohoshi Tomohiro
Department of Material and Environmental Chemistry, Graduate School of Engineering, Utsunomiya Unive
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SOMEYA NOBUTAKA
National Agricultural Research Center for Hokkaido Region (NARCH), National Agriculture and Food Res
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Ikeda Seishi
National Agricultural Research Center for Hokkaido Region (NARCH), National Agriculture and Food Res
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Noguchi Tsujimoto
National Agricultural Research Center (NARC), NARO
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Yoshida Takanobu
Bio-oriented Technology Research Advancement Institution, NARO
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Tsuchiya Kenichi
Faculty of Agriculture, Kyushu University
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