Vallitalea guaymasensis gen. nov., sp nov., isolated from marine sediment

Type Article
Date 2013-08
Language English
Author(s) Lakhal Raja1, 2, Pradel Nathalie1, Postec Anne1, Hamdi Moktar2, Ollivier Bernard1, Godfroy AnneORCID3, Fardeaul Marie-Laure1
Affiliation(s) 1 : Aix Marseille Univ, Univ Sud Toulon Var, CNRS INSU, Lab Microbiol,IRD,UM 110, F-13288 Marseille 9, France.
2 : Inst Natl Sci Appl & Technol, Ctr Urbain Nord, Lab Ecol & Technol Microbienne, Tunis 1080, Tunisia.
3 : IFREMER, Lab Microbiol Environm Extremes, UMR 6197, F-29280 Plouzane, France.
Source International Journal Of Systematic And Evolutionary Microbiology (1466-5026) (Soc General Microbiology), 2013-08 , Vol. 63 , P. 3019-3023
DOI 10.1099/ijs.0.045708-0
WOS© Times Cited 11
Abstract A novel obligately anaerobic, non-spore-forming, rod-shaped mesophilic, halophilic, Gram-stain-negative bacterium, was isolated from sediments of Guaymas Basin. The strain, designated Ra1766G1(T), grew at 20-40 degrees C (optimum, 30-35 degrees C) and at pH 6.0-8.0 (optimum, pH 6.5-7.5). It required 0.5-7.5 % NaCl (optimum, 2-3 %) for growth. Sulfate, thiosulfate, elemental sulfur, sulfite, fumarate, nitrate and nitrite were not used as terminal electron acceptors. Strain Ra1766G1(T) used cellobiose, glucose, mannose, maltose, arabinose, raffinose, galactose, ribose, sucrose, pyruvate and xylose as electron donors. The main fermentation product from glucose metabolism was acetate. The predominant cellular fatty acids were anteiso-C-15:0, iso-C-15:0, anteiso DMA-C-15:0 and C-16:0. The main polar lipids consisted of diphosphatidylglycerol, phosphatidylglycerol, iso-DMA-C-15:0 glycolipids and phospholipids. The G+C content of the genomic DNA was 31.2 mol%. The closest phylogenetic relatives of strain Ra1766G1(T) were Natranaerovirga pectinivora AP3(T) (92.4 % 16S rRNA gene sequence similarity), Natranaerovirga hydrolytica APP2(T)(90.2 %) and Defluviitalea saccharophila 6LT2(T) (88.9 %). On the basis of phylogenetic inference and phenotypic properties, strain Ra1766G1(T) represents a novel species of a new genus for which the name Vallitalea guaymasensis is proposed. The type strain of the type species is Ra1766G1(T) (=DSM 24848(T)=JCM17997(T)).
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Lakhal Raja, Pradel Nathalie, Postec Anne, Hamdi Moktar, Ollivier Bernard, Godfroy Anne, Fardeaul Marie-Laure (2013). Vallitalea guaymasensis gen. nov., sp nov., isolated from marine sediment. International Journal Of Systematic And Evolutionary Microbiology, 63, 3019-3023. Publisher's official version : https://doi.org/10.1099/ijs.0.045708-0 , Open Access version : https://archimer.ifremer.fr/doc/00177/28821/