Thalassobacter stenotrophicus Macián et al. 2005 is a later synonym of Jannaschia cystaugens Adachi et al. 2004, with emended description of the genus Thalassobacter
The type strains of Jannaschia cystaugens (LMG 22015T) and Thalassobacter stenotrophicus (CECT 5294T) were analysed by means of genomic DNA–DNA hybridization, comparison of 16S rRNA gene sequences and phenotypic properties determined under the same methodological conditions. J. cystaugens LMG 22015T showed DNA–DNA relatedness levels of 72 % when hybridized with the genomic DNA of T. stenotrophicus CECT 5294T. Sequence comparisons revealed that the 16S rRNA genes of the two strains had a similarity of 99·8 %. The cellular fatty acid and polar lipid compositions of the two strains and their DNA mol% G+C contents were almost identical. Bacteriochlorophyll a (Bchl a) and polyhydroxybutyrate were produced by both strains under the same culture conditions. Their closest phylogenetic neighbours were Jannaschia helgolandensis and Jannaschia rubra; however, the low sequence similarity values (95·7–95·9 %) and several important differences in phenotypic traits (ionic requirements, Bchl a production and polar lipids) support the distinction between the genera Thalassobacter and Jannaschia. Thus, we propose the unification of J. cystaugens (LMG 22015T) and T. stenotrophicus (CECT 5294T) as Thalassobacter stenotrophicus (type strain, CECT 5294T=DSM 16310T). An emended description of the genus Thalassobacter is also presented.
BaumannP.,
BaumannL.1981; The marine Gram-negative eubacteria: genera Photobacterium Beneckea , Alteromonas , Pseudomonas and Alcaligenes . In The Prokaryotes , vol. II pp 1302–1331 Edited by
StarrM. P.,
StolpH.,
TrüperH. G.,
BalowsA.,
SchlegelH. G.
Berlin: Springer;
GarrityG. M.,
BellJ. A.,
LilburnT. G.2004; Taxonomic outline of the Prokaryotes. In Bergey's Manual of Systematic Bacteriology , 2nd edn, release 5.0. New York: Springer; doi: 10.1007/bergeysoutline200405
LabrenzM.,
CollinsM. D.,
LawsonP. A.,
TindallB. J.,
SchumannP.,
HirschP.1999; Roseovarius tolerans gen. nov., sp. nov. a budding bacterium with variable bacteriochlorophyll a production from hypersaline Ekho Lake. Int J Syst Bacteriol 49:137–147[CrossRef]
LabrenzM.,
LawsonP. A.,
TindallB. J.,
CollinsM. D.,
HirschP.2005; Roseisalinus antarcticus gen. nov., sp. nov. a novel aerobic bacteriochlorophyll a -producing α -proteobacterium isolated from hypersaline Ekho Lake, Antarctica. Int J Syst Evol Microbiol 55:41–47[CrossRef]
SmibertR. M.,
KriegN. R.1994; Phenotypic characterization. In Methods for General and Molecular Bacteriology pp 607–654 Edited by
GerhardtP.,
MurrayR. G. E.,
WoodW. A.,
KriegN. R.
Washington, DC: American Society for Microbiology;
SuzukiT.,
MurogaY.,
TakahamaM.,
ShibaT.,
NishimuraY.1999a; Rubrimonas cliftonensis gen. nov., sp. nov. an aerobic bacteriochlorophyll-containing bacterium isolated from a saline lake. Int J Syst Bacteriol 49:201–205[CrossRef]
Wagner-DöblerI.,
RheimsH.,
FelskeA.,
PukallR.,
TindallB. J.2003; Jannaschia helgolandensis gen. nov., sp. nov., a novel abundant member of the marine Roseobacter clade from the North Sea. Int J Syst Evol Microbiol 53:731–738[CrossRef]
WayneL. G.,
BrennerD. J.,
ColwellR. R.9 other authors1987; International Committee on Systematic Bacteriology. Report of the ad hoc committee on reconciliation of approaches to bacterial systematics. Int J Syst Bacteriol 37:463–464[CrossRef]
ZiemkeF.,
HöfleM. G.,
LalucatJ.,
Rosselló-MoraR.1998; Reclassification of Shewanella putrefaciens Owen's genomic group II as Shewanella baltica sp. nov. Int J Syst Bacteriol 48:179–186[CrossRef]
Thalassobacter stenotrophicus Macián et al. 2005 is a later synonym of Jannaschia cystaugens Adachi et al. 2004, with emended description of the genus Thalassobacter