Isolation from oil reservoirs of novel thermophilic anaerobes phylogenetically related to Thermoanaerobacter subterraneus: reassignment of T. subterraneus, Thermoanaerobacter yonseiensis, Thermoanaerobacter tengcongensis and Carboxydibrachium pacificum t

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Title Isolation from oil reservoirs of novel thermophilic anaerobes phylogenetically related to Thermoanaerobacter subterraneus: reassignment of T. subterraneus, Thermoanaerobacter yonseiensis, Thermoanaerobacter tengcongensis and Carboxydibrachium pacificum t
Author Fardeau, Marie-Laure; Salinas, Monica Bonilla; L'Haridon, Stephane; Jeanthon, Christian; Verhe, Frederic; Cayol, Jean-Luc; Patel, Bharat Kumar; Garcia, Jean-Louis; Ollivier, Bernard
Journal Name International Journal of Systematic and Evolutionary Microbiology
Year Published 2004
Place of publication United Kingdom
Publisher Society of General Microbiology
Abstract Novel thermophilic, anaerobic, Gram-positive, rod-shaped bacteria, strains SL9 and OCA1, were isolated from oilfields in France and Australia, respectively. Both strains, together with Thermoanaerobacter yonseiensis KB-1T (=DSM 13777T), Thermoanaerobacter tengcongensis MB4T (=DSM 15242T) and Carboxydibrachium pacificum JMT (=DSM 12653T), possessed genomic (DNA–DNA hybridization studies) and phylogenetic similarities with Thermoanaerobacter subterraneus SEBR 7858T (=DSM 13054T), which was isolated recently from an oilfield reservoir in south-west France. Marked phenotypic differences exist between the three oilfield isolates (T. subterraneus, strain OCA1 and strain SL9): they include temperature range for growth and substrates used. Differences were also observed in the DNA G+C contents of all organisms. Similarly to T. subterraneus, strains SL9 and OCA1, and also T. yonseiensis, T. tengcongensis and Carboxydibrachium pacificum, produced acetate and L-alanine as major end products of glucose metabolism [0·8–1·0 mol L-alanine produced (mol glucose consumed)-1] and reduced thiosulfate, but not sulfate, to sulfide. Because of these significant metabolic and phylogenetic differences between the oilfield isolates (T. subterraneus, strain OCA1 and strain SL9), T. yonseiensis, T. tengcongensis and Carboxydibrachium pacificum and other Thermoanaerobacter species, it is proposed to reassign them as a novel genus and species, Caldanaerobacter subterraneus gen. nov., sp. nov., comb. nov., with the creation of four novel subspecies, Caldanaerobacter subterraneus subsp. subterraneus subsp. nov., comb. nov., Caldanaerobacter subterraneus subsp. yonseiensis subsp. nov., comb. nov., Caldanaerobacter subterraneus subsp. tengcongensis subsp. nov., comb. nov. and Caldanaerobacter subterraneus subsp. pacificus subsp. nov., comb. nov.
Peer Reviewed Yes
Published Yes
Publisher URI http://ijs.sgmjournals.org/
Alternative URI http://dx.doi.org/10.1099/ijs.0.02711-0
Volume 54
Edition 2004
Page from 467
Page to 474
ISSN 1466-5026
Date Accessioned 2005-03-23
Date Available 2009-09-16T07:42:27Z
Language en_AU
Research Centre Queensland Micro and Nanotechnology Centre
Faculty Faculty of Science
Subject PRE2009-Science & Technology
URI http://hdl.handle.net/10072/5748
Publication Type Journal Articles (Refereed Article)
Publication Type Code c1

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