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KMID : 0880220090470050524
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Journal of Microbiology
2009 Volume.47 No. 5 p.524 ~ p.529
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Paenibacillus filicis sp. nov., Isolated from the Rhizosphere of the Fern
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Kim Byung-Chun
Bae Kyung-Sook
Shin Kee-Sun
Kim Mi-Na
Lee Kang-Hyun
Kwon Sun-Beom
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Abstract
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A Gram-positive and endospore-forming bacterial strain, designated S4T, was isolated from the rhizosphere of ferns in Daejeon, Republic of Korea. This isolate is strictly aerobic, motile, and rod-like in shape, and it is positive for catalase, oxidase, esterase lipase, and β-galactosidase activities. In addition, this strain grows when cultured at temperatures between 15 and 37°C and at pH values ranging from 5.5 to 9.0. The DNA G+C content was determined to be 53.2 mol%. Strain S4T has meso-diaminopimelic acid in the cell-wall peptidoglycan; it also contains menaquinone 7 (MK-7) as the predominant isoprenoid quinone and anteiso-C15:0 (57.5%), iso-C16:0 (11.3%), and C16:0 (9.4%) as the major cellular fatty acids. Phylogenetic analysis based on alignments of the 16S rRNA gene sequence showed that S4T is affiliated with a cluster of strains within the genus Paenibacillaceae and is most closely related to Paenibacillus chinjuensis WN9T, with 96.8% similarity. Based on the phylogenetic and phenotypic characteristics of strain S4T, we believe that this isolate should be distinguished from all type species of the genus Paenibacillus and should thus represent a novel taxon within the genus Paenibacillus. We propose naming this type species Paenibacillus filicis sp. nov. for the rhizosphere isolate; the type strain will be known as S4T (=KCTC 13693T =KACC 14197T =JCM 16417T).
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KEYWORD
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novel bacterium, fern, rhizosphere, Paenibacillus filicis
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