| [on the biology of nevskia ramosa]. | | 1967 | 5598146 |
| phylogeny and identification in situ of nevskia ramosa. | an enrichment of the neuston bacterium nevskia ramosa was investigated by the cultivation-independent rrna approach. n. ramosa was first described by famintzin in 1892 as a rod-shaped, slightly bent bacterium forming typical flat rosettes on the surface of shallow freshwater habitats by unilateral slime formation. pcr in combination with cloning and sequencing was used for retrieving 21 partial and 5 nearly full-length 16s rrna sequences forming three tight clusters. in situ hybridization with r ... | 1998 | 9572969 |
| analysis of the relative abundance of different types of bacteria capable of toluene degradation in a compost biofilter. | a microbial community of a compost biofilter treating toluene vapors was investigated using serum-bottle assays and mineral-agar plates. toluene was not consumed in the absence of oxygen. however, filter-bed extracts exposed to toluene vapor as the only carbon source produced distinct colony types (phenotypic groups) that were counted separately. strains from each group were isolated and checked for toluene-degradation activity in serum bottles. only 15% of colonies were true toluene degraders. ... | 1999 | 10616721 |
| bacterial diversity of a soil sample from schirmacher oasis, antarctica. | the bacterial diversity of a soil sample collected in the vicinity of lake zub, schirmacher oasis, antarctica, was determined both by establishing pure colonies of culturable bacteria and by cloning the total 16s rdna of the soil and establishing the phylogeny of the clones. analysis of the 16s rrna gene clones indicated that the bacteria belonged to the classes alpha-proteobacteria, beta-proteobacteria, gamma-proteobacteria, gemmatimonas, bacteriodetes, actinobacteria, chloroflexi and chlamydia ... | 2004 | 15559969 |
| [effect of pentachlorophenol (pcp) on bacterial community of an aerobic granular sludge estimated by t-rflp]. | effect of pentachlorophenol (pcp) on cod and ammonium removal rates was investigated, and also changes of bacterial community within aerobic granular sludge were monitored by terminal restriction fragment length polymorphism (t-rflp) technique. compared with the removal rate of cod, the rate of ammonium removal is more sensitive to pcp. as the ammonium and cod removal rates decreased consistently, the bacterial genera within the aerobic granular sludge also decrease with the increase of pcp conc ... | 2006 | 16768009 |
| solimonas soli gen. nov., sp. nov., isolated from soil of a ginseng field. | a micro-organism, dcy12t, comprising gram-negative, non-motile, pale-yellow rods was isolated from soil from a ginseng field in south korea and was investigated to determine its taxonomic status. it grew optimally at 30 degrees c and at ph 7.0, the g+c content of its dna was 40.5 mol%, the major components of the fatty acid profile were c16:0 and c18:1 and the major ubiquinone was q-8. a phylogenetic analysis based on the 16s rrna gene sequence revealed that the novel isolate was most closely re ... | 2007 | 17978223 |
| nevskia soli sp. nov., isolated from soil cultivated with korean ginseng. | a gram-negative bacterium, designated strain gr15-1(t), was isolated from a field cultivated with korean ginseng. cells were strictly aerobic, motile with multipolar flagella and rod-shaped. the strain grew optimally at 25-28 degrees c and ph 6.0-7.0. the predominant fatty acids of strain gr15-1(t) were c(18 : 1)omega7c, c(16 : 0) and summed feature 2 (c(14 : 0) 3-oh and/or iso-c(16 : 1) i). the major isoprenoid quinone was ubiquinone 8. the g+c content of the genomic dna was 63.9 mol%. phylogen ... | 2008 | 18319458 |
| nevskia terrae sp. nov., isolated from soil. | a gram-negative bacterium, designated kis13-15(t), was isolated from soil in korea. cells were strictly aerobic rods and were motile with 1-3 subpolar flagella. 16s rrna gene sequence analysis revealed that strain kis13-15(t) belonged to the order xanthomonadales of the class gammaproteobacteria and was closely related to nevskia soli gr15-1(t) (97.9 % 16s rrna gene sequence similarity) and nevskia ramosa soe1(t) (96.8 %). strain kis13-15(t) exhibited 38 and 29 % dna-dna relatedness with n. soli ... | 2011 | 20584818 |
| ecophysiological and phylogenetic studies of nevskia ramosa in pure culture. | during the last 100 years, the neuston bacterium nevskia ramosa has been described several times. this bacterium forms conspicuous rosette-like microcolonies at the air-water interface. in this study, pure cultures of nevskia ramosa were obtained for the first time, from a bog lake (strain soe1, dsmz 11499t) and a freshwater ditch (strain ol1, dsmz 11500). the isolates showed special adaptations to life in the epineuston. they formed hydrophobic surface films with a dull appearance. n. ramosa is ... | 1998 | 9572968 |
| panacagrimonas perspica gen. nov., sp. nov., a novel member of gammaproteobacteria isolated from soil of a ginseng field. | a taxonomic study was carried out on gsoil 142(t), a bacterial strain isolated from the soil collected in a ginseng field in pocheon province, south korea. comparative 16s rrna gene sequence studies showed a clear affiliation of this bacterium to the gammaproteobacteria, and it was most closely related to hydrocarboniphaga effusa atcc baa 332(t) (94.4%, 16s rrna gene sequence similarity), nevskia ramosa dsm 11499(t) (94.1%) and alkanibacter difficilis mn154.3(t) (92.0%). strain gsoil 142(t) was ... | 2010 | 20437162 |
| characterisation of hexane-degrading microorganisms in a biofilter by stable isotope-based fatty acid analysis, fish and cultivation. | the hexane-degrading bacterial community of a biofilter was characterised by a combination of stable isotope-based phospholipid fatty acid analyses, fluorescence in situ hybridisation and cultivation. about 70 bacterial strains were isolated from a full-scale biofilter used for treatment of hexane containing waste gas of an oil mill. the isolation approach led to 16 bacterial groups, which were identified as members of the alpha-, beta- and gammaproteobacteria, actinobacteria and firmicutes. thr ... | 2010 | 19847422 |
| alkanibacter difficilis gen. nov., sp. nov. and singularimonas variicoloris gen. nov., sp. nov., hexane-degrading bacteria isolated from a hexane-treated biofilter. | two gram-negative, rod-shaped, non-spore-forming bacterial strains were isolated from a hexane-treated, full-scale biofilter from an oil mill. the strains were cultivated with hexane as the sole carbon source. one strain, mn154.3(t), showed a fatty acid profile that contained 16 : 0, 18 : 1cis11 and 19 : 0 cyclo11-12 as major compounds, while the second strain, isolate mn28(t), contained 14 : 0 3-oh, 16 : 0 and 18 : 1cis11 as the predominant fatty acids. on the basis of almost-complete 16s rrna ... | 2008 | 18842850 |
| steroidobacter denitrificans gen. nov., sp. nov., a steroidal hormone-degrading gammaproteobacterium. | a denitrifying bacterium, designated strain fs(t), was isolated from anoxic digested sludge on oestradiol [17beta-oestra-1,3,5(10)-triene-3,17-diol] or testosterone (17beta-hydroxyandrost-4-en-3-one) as the sole source of carbon and energy with nitrate as the electron acceptor. strain fs(t) represents the first known bacterium to grow anaerobically on both oestradiol (c-18) and testosterone (c-19). steroidal hormones were degraded completely by nitrate reduction to dinitrogen monoxide, which was ... | 2008 | 18768632 |
| description of sinobacter flavus gen. nov., sp. nov., and proposal of sinobacteraceae fam. nov. | a novel gram-negative, non-motile, rod-shaped bacterium, designated cw-kd 4(t), was isolated from a polluted soil sample collected from jiangsu province, china, by using a classic enrichment method. based on 16s rrna gene sequence analysis, the novel strain represented a deep-rooting lineage within the class gammaproteobacteria that was clustered with the genera hydrocarboniphaga and nevskia and some other unidentified bacteria. polyphasic taxonomic studies revealed that strain cw-kd 4(t) showed ... | 2008 | 18175707 |
| widespread capacity to metabolize polychlorinated biphenyls by diverse microbial communities in soils with no significant exposure to pcb contamination. | the purpose of this work was to determine the extent of microbial metabolic potential for polychlorinated biphenyls (pcbs) in soils that have had no previous exposure to this class of xenobiotic pollutants. soil and sediment samples of distinct characteristics from six sites in germany were used to inoculate pcb oil (aroclor 1242) microdroplets. all samples yielded multispecies biofilms, as revealed by single-strand conformation polymorphism (sscp) analyses of polymerase chain reaction (pcr) ana ... | 2007 | 17635537 |
| identification of active bacterial communities in a model drinking water biofilm system using 16s rrna-based clone libraries. | recent phylogenetic studies have used dna as the target molecule for the development of environmental 16s rrna gene clone libraries. as dna may persist in the environment, dna-based libraries cannot be used to identify metabolically active bacteria in water systems. in this study, an annular reactor was used to generate model drinking water biofilms grown on polycarbonate slides. high-quality rna was extracted from 2-month-old biofilms and used to generate 16s rrna-based clones. sequencing analy ... | 2006 | 16553851 |
| hydrocarboniphaga effusa gen. nov., sp. nov., a novel member of the gamma-proteobacteria active in alkane and aromatic hydrocarbon degradation. | novel alkane-degrading strains of bacteria were isolated from soil contaminated with fuel oil from a leaking underground tank in new jersey, usa. two phenotypically similar strains (designated ap102 and ap103t) possessed 16s rrna sequences unique among the majority of known hydrocarbon-degrading bacteria. the 16s rrna sequences showed a moderate but distant relationship to the genus nevskia and a substantial similarity to strains that had previously been isolated for growth on phenol (in japan) ... | 2004 | 15280292 |
| distribution of nevskia ramosa and other rosette-forming neustonic bacteria. | samples from 27 natural and artificial aquatic environments were analyzed for the presence of rosette-forming bacteria by a combined cultivation and molecular biological approach. rosette-forming bacteria developed in 20 enrichment cultures with ammonia-free medium under air. three morphotypes could be distinguished. the most abundant type i resembled nevskia ramosa and formed hydrophobic, flat, and dichotomously branching rosettes. type ii rosettes were three-dimensional and were observed in 10 ... | 2004 | 15054677 |