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1999•INTERNATIONAL JOURNAL OF SYSTEMATIC AND EVOLUTIONARY MICROBIOLOGYRequires access

Phylogenetic positions of Aeromonas encheleia, Aeromonas popoffii, Aeromonas DNA hybridization Group 11 and Aeromonas Group 501

Antonio Martı́nez-Murcia

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Abstract

The 16S rDNA sequences of the recently described Aeromonas encheleia and Aeromonas popoffii, were determined and compared with data from all known Aeromonas sp. Diagnostic 16S rDNA regions were also sequenced for some strains previously considered as an extension of A. encheleia and a strain of Aeromonas Group 501 (formerly Enteric Group 501). Results indicated that A. encheleia and A. popoffii are phylogenetically separated species as originally described. A conclusion about HG11 taxonomic status is not recommended until previous discrepancies are clarified by further DNA-DNA hybridization and sequencing studies.

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The 16S rDNA sequences of the recently described Aeromonas encheleia and Aeromonas popoffii, were determined and compared with data from all known Aeromonas sp. Diagnostic 16S rDNA regions were also sequenced for some strains previously considered as an extension of A. encheleia and a strain of Aeromonas Group 501 (formerly Enteric Group 501). Results indicated that A. encheleia and A. popoffii are phylogenetically separated species as originally described. A conclusion about HG11 taxonomic status is not recommended until previous discrepancies are clarified by further DNA-DNA hybridization and sequencing studies.

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Available abstract

The 16S rDNA sequences of the recently described Aeromonas encheleia and Aeromonas popoffii, were determined and compared with data from all known Aeromonas sp. Diagnostic 16S rDNA regions were also sequenced for some strains previously considered as an extension of A. encheleia and a strain of Aeromonas Group 501 (formerly Enteric Group 501). Results indicated that A. encheleia and A. popoffii are phylogenetically separated species as originally described. A conclusion about HG11 taxonomic status is not recommended until previous discrepancies are clarified by further DNA-DNA hybridization and sequencing studies.

Key concepts: Aeromonas, Biology, 16S ribosomal RNA, Phylogenetic tree, Microbiology, DNA–DNA hybridization, Phylogenetics, Ribosomal DNA

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