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1DSV-DEVM, Laboratoire d'Ecologie Microbienne de la Rhizosphére, UMR 163 CNRS-CEA, CEA Cadarache, F-13108 Saint Paul-lez-Durance, France
2CNRS ESA 2077 and Université Pierre et Marie Curie, Observatoire Océanologique, Station Zoologique, F-06230 Villefranche-sur-mer, France
3Centre de Pédologie Biologique du CNRS, UPR 6831 Associée à l'Université de Nancy I, BP 5, F-54501 Vandœuvre-les-Nancy Cedex, France
Author for correspondence: Wafa Achouak. Tel: +33 4 42 25 49 61. Fax: +33 4 42 25 66 48. e-mail: wachouak{at}cea.fr
ABSTRACT
Twenty-one exopolysaccharide-producing strains were isolated from the 5--20 µm fraction of a vertisol in the south-east of the island of Martinique in the French West Indies. Although these strains were phenotypically identifie as Burkholderia cepacia or as Burkholderia glathei using BIOLOG microplates they did not cluster genotypically by amplified rDNA restriction analysis (ARDRA) with any described Burkholderia species. A phylogenetic analysis revealed that the rrs (16S rDNA) sequences of three representative strains clustered in a single branch within the genus Burkholderia and distantly fror all of the previously described species of Burkholderia for which rrs sequences were available. DNA-DNA hybridization data as well as phenotypic analyses indicated that the 21 isolates represented a single and new species for which the name Burkholderia caribensis sp. nov. is proposed (type strain MWAP64TLMG 18531T).
Key Words: Burkholderia caribensis sp. nov. • vertisol microaggregate • rrs analysis • DNA-DNA hybridization • phenotypic analysis
GenBank accession numbers for the rrs sequences reported in this paper are Y17009 (strain MWAP64T), Y17010 (strain MWAP71), Y17011 (strain MWAP84) and Y17052 (B. glathei strain LMG 14190T).
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