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Title 

Characterization of Symbiobacterium toebii, an obligate commensal thermophile isolated from compost

Authors 

Sung-Keun RheeChe Ok JeonJin-Woo BaeKwang KimJae Jun SongJoong Jae KimSeung Goo LeeHong Ik KimSeung Pyo HongYoon Ho ChoiSu Mi KimMoon Hee Sung

Publisher 

Springer Verlag (Germany)

Issue Date 

2002

Citation 

Extremophiles, vol. 6, no. 1, pp. 57-64

Keywords 

commensalismcompostmicroaerophilicsymbiobacterium toebiisymbiotic bacteriumthermophilesymbiobacterium thermophilum

Abstract 

A symbiotic thermophilic bacterium, strain SC-1, was isolated from hay compost (toebi) in Korea. The new isolate exhibited an obligate commensal interaction with a thermophilic Geobacillus strain and required crude extracts and/or culture supernatant from Geobacillus sp. SK-1 for axenic growth. The growth factors from Geobacillus sp. SK-1 were irreversibly inactivated by phenol or protease treatment, suggesting that they might be proteins. The cells of strain SC-1 were non-spore forming, nonmotile rods that were stained Gram-negatively. The isolate was a microaerophilic heterotroph. Growth was observed between 45° and 70°C (optimum: 60°C; 2.4-h doubling time) and pH 6.0 and 9.0 (optimum: pH 7.5). The G+C content of the genomic DNA was 65 mol%, and the major quinones were MK-6 and MK-7. A phylogenetic analysis of its 16S rDNA sequence indicated that strain SC-1 is closely related to Symbiobacterium thermophilum and so was named Symbiobacterium toebii on the basis of its physiological and molecular properties.

ISSN 

1431-0651

Link 

http://dx.doi.org/10.1007/s007920100233

Appears in Collections

1. Journal Articles > Journal Articles

Registered Date

2017-04-19


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