Modicisalibacter tunisiensis gen. nov., sp. nov., an aerobic, moderately halophilic bacterium isolated from an oilfield-water injection sample, and emended description of the family Halomonadaceae Franzmann et al. 1989 emend Dobson and Franzmann 1996 emend. Ntougias et al. 2007
1 Laboratoire de Microbiologie IRD, Biotechnologie Microbienne des Environnements Chauds, UMR D180, IRD ESIL, Universités de Provence et de la Méditerranée, 163 avenue de Luminy, 13288 Marseille cedex 9, France 2 Laboratoire d'Immuno-Microbiologie Environnementale et Cancérogenèse, Faculté des...
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Veröffentlicht in: | International journal of systematic and evolutionary microbiology 2007-10, Vol.57 (10), p.2307-2313 |
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Zusammenfassung: | 1 Laboratoire de Microbiologie IRD, Biotechnologie Microbienne des Environnements Chauds, UMR D180, IRD ESIL, Universités de Provence et de la Méditerranée, 163 avenue de Luminy, 13288 Marseille cedex 9, France
2 Laboratoire d'Immuno-Microbiologie Environnementale et Cancérogenèse, Faculté des Sciences de Bizerte, 70021 Zarzouna, Tunisia
3 Laboratoire des Bio-Procédés, Centre de Biotechnologie de Sfax, Route de Sidi Mansour Km 6, BP K, Sfax 3038, Tunisia
Correspondence Marc Labat marc.labat{at}esil.univmed.fr
An aerobic, moderately halophilic, Gram-negative, motile, non-sporulating bacterium, strain LIT2 T , was isolated from an oilfield-water injection after enrichment on crude oil. Strain LIT2 T grew between 15 and 45 °C and optimally at 37 °C. It grew in the presence of 1–25 % (w/v) NaCl, with an optimum at 10 % (w/v) NaCl. Predominant fatty acids were C 16 : 0 (26.9 %), C 18 : 1 7 c (22.6 %), C 16 : 1 7 c (20.4 %) C 19 : 0 cyclo 8 c (10.9 %) and C 17 : 0 (8 %). Interestingly, the relative percentages of these last two fatty acids were intermediate compared with most species among the family Halomonadaceae for which fatty acid composition has been determined. The DNA G+C content was 53.7 mol%, which is very low among the family Halomonadaceae . Strain LIT2 T exhibited 16S rRNA gene sequence similarity values of 94.06–95.15 % to members of the genus Chromohalobacter , 94.21–94.65 % to members of the genus Halomonas and 93.57 % with the single species representative of the genus Cobetia . Based on the phylogenetic and phenotypic evidence presented in this paper, we propose the name Modicisalibacter tunisiensis gen. nov., sp. nov. to accommodate strain LIT2 T . The type strain of Modicisalibacter tunisiensis is LIT2 T (=CCUG 52917 T =CIP 109206 T ). A reassignment of the descriptive 16S rRNA signature characteristics of the family Halomonadaceae permitted placement of the new genus Modicisalibacter into the family.
The GenBank/EMBL/DDBJ accession number for the 16S rRNA gene sequence of strain LIT2 T is DQ641495 . |
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ISSN: | 1466-5026 1466-5034 |
DOI: | 10.1099/ijs.0.65088-0 |