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Vibrio communis sp. nov., isolated from the marine animals Mussismilia hispida, Phyllogorgia dilatata, Palythoa caribaeorum, Palythoa variabilis and Litopenaeus vannamei
Chimetto, L.A.; Cleenwerck, I.; Alves Jr, N.; Silva, B.S.; Brocchi, M.; Willems, A.; De Vos, P.; Thompson, F.L. (2011). Vibrio communis sp. nov., isolated from the marine animals Mussismilia hispida, Phyllogorgia dilatata, Palythoa caribaeorum, Palythoa variabilis and Litopenaeus vannamei. Int. J. Syst. Evol. Microbiol. 61(2): 362-368. http://dx.doi.org/10.1099/ijs.0.019729-0
In: International Journal of Systematic and Evolutionary Microbiology. Society for General Microbiology: Reading. ISSN 1466-5026; e-ISSN 1466-5034, meer
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AFLP, amplified fragment length polymorphism DDH, DNA–DNA hybridization MLSA, multilocus sequence analysis |
| Auteurs | | Top |
- Chimetto, L.A., meer
- Cleenwerck, I., meer
- Alves Jr, N.
- Silva, B.S.
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- Brocchi, M.
- Willems, A., meer
- De Vos, P., meer
- Thompson, F.L., meer
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| Abstract |
Eight Vibrio isolates originating from the marine corals Mussismilia hispida and Phyllogorgia dilatata and the zoanthids Palythoa caribaeorum and Palythoa variabilis in Brazil and the Pacific white shrimp (Litopenaeus vannamei) in Ecuador were studied by means of a polyphasic approach. The novel isolates formed a tight monophyletic group in the genus Vibrio and were closely related to species of the Vibrio harveyi group, to which they showed more than 99?% 16S rRNA gene sequence similarity. Analysis based on concatenated sequences of the following seven genes, 16S rRNA, gyrB, recA, rpoA, topA, pyrH and mreB (5633 bp in length), showed clear separation between the isolates and species of the V. harveyi group. Amplified fragment length polymorphism (AFLP) analysis, performed previously, revealed that a representative isolate of this group, LMG 20370, was clearly separate from known Vibrio species (it belonged to the so-called AFLP cluster A31). DNA–DNA hybridization (DDH) experiments with representative isolates and type strains of the V. harveyi species group revealed high DDH between the novel isolates (more than 74?%) and less than 70?% DDH towards type strains of related Vibrio species, proving the novel species status of the isolates. Phenotypically, the novel species belongs to the arginine dihydrolase (A)-negative, lysine decarboxylase (L)-positive and ornithine decarboxylase (O)-positive (A-/L+/O+) cluster reported previously. Most species of the V. harveyi group (i.e. Vibrio rotiferianus, V. harveyi, V. parahaemolyticus and V. alginolyticus) also belong to this A-/L+/O+ cluster. However, several phenotypic features can be used for the identification of the novel species. In contrast to its closest phylogenetic neighbours, the novel species exhibits esterase (C4) and N-acetyl-ß-glucosaminidase activities, but it does not produce acetoin, does not use citrate, a-ketoglutaric acid or propionic acid and does not ferment melibiose. The novel species can also be differentiated on the basis of the presence of the fatty acids C17?:?0, C17?:?1?8c, iso-C17?:?0 and iso-C13?:?0 and the absence of the fatty acid C18?:?0. The name Vibrio communis sp. nov. is proposed for this taxon. Strain R-40496T (=LMG 25430T =CAIM 1816T) is the type strain. |
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