Description of Thermoanaerobacter brockii subsp. lactiethylicus subsp. nov., isolated from a deep subsurface French oil well, a proposal to reclassify Thermoanaerobacter finnii as Thermoanaerobacter brockii subsp. finnii comb. nov., and an emended description of Thermoanaerobacter brockii

International Journal of Systematic Bacteriology
Jean-Luc CayolJ L Garcia

Abstract

A strictly anaerobic, thermophilic, gram-positive, spore-forming cubacterium designated strain SERB 5268T (T = type strain) was isolated from an oil field at a depth of 2,100 m, where the temperature was 92 degrees C. The cells of this organism were gram-positive, straight, motile rods (0.5 by 2 to 3 microns) with peritrichous flagella. The cells occurred singly or in pairs during the logarithmic growth phase, but were pleomporphic and filamentous (length, 15 microns) in old cultures. Growth occurred at temperatures of 40 to 75 degrees C, and optimum growth occurred at temperatures between 55 and 60 degrees C. The fermentable substrates included glucose, fructose, galactose, mannose, cellobiose, maltose, sucrose, lactose, D-xylose, D-ribose, mannitol, pyruvate, and starch. The products of fermentation of glucose were lactate, acetate, ethanol, H2, and CO2. The DNA base composition was 35 mol% G+C. The results of 16S rRNA sequence comparisons indicated that strain SEBR 5268T was closely related to Thermoanaerobacter brockii and Thermoanaerobacter finnii, and these three organisms exhibited levels of ribosomal DNA sequence homology of 98 to 99%. The results of DNA-DNA hybridization studies performed with the three organisms confi...Continue Reading

Citations

Nov 17, 2004·International Journal of Systematic and Evolutionary Microbiology·Monica Bonilla SalinasBernard Ollivier
Apr 2, 2008·Annals of the New York Academy of Sciences·Isaac D Wagner, Juergen Wiegel
Jul 30, 2011·Applied Microbiology and Biotechnology·Tinghong Chang, Shuo Yao
Dec 24, 2017·AMB Express·Carolina Díaz-CárdenasSandra Baena
Aug 17, 2018·International Journal of Systematic and Evolutionary Microbiology·Aharon Oren, George Garrity
Dec 12, 2018·Microbiology Resource Announcements·Angela CantilloMaría Mercedes Zambrano
Jun 2, 2006·International Journal of Systematic and Evolutionary Microbiology·Rob U OnyenwokeJuergen Wiegel
May 2, 2009·International Journal of Systematic and Evolutionary Microbiology·Estelle Jumas-BilakHélène Marchandin
Sep 14, 2016·Frontiers in Microbiology·Joana I AlvesDiana Z Sousa
Aug 29, 2012·Microbial Cell Factories·Simon Rittmann, Christoph Herwig
Jan 8, 2021·Environmental Science and Pollution Research International·Nishi Kumari Singh, Sangeeta Choudhary
May 18, 2010·Applied and Environmental Microbiology·A Joe ShawLee R Lynd

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