| transfer of blastobacter natatorius (sly 1985) to the genus blastomonas gen. nov. as blastomonas natatoria comb. nov. | the budding bacterium blastobacter natatorius belongs to the alpha-4 group of the proteobacteria and clusters phylogenetically on a deep branch with sphingomonas capsulata, with which it shares 93.9% 16s rrna sequence similarity. on phylogenetic, phenotypic, and chemotaxonomic grounds a proposal is made to transfer b. natatorius to the genus blastomonas gen. nov. as blastomonas natatoria comb. nov. | 1997 | 9103650 |
| proposal of sphingomonas suberifaciens (van bruggen, jochimsen and brown 1990) comb. nov., sphingomonas natatoria (sly 1985) comb. nov., sphingomonas ursincola (yurkov et al. 1997) comb. nov., and emendation of the genus sphingomonas. | based on the results of a phylogenetic analysis of 16s rrna and the presence of sphingoglycolipid in cellular lipids of the type strains, transfer of "rhizomonas" suberifaciens, blastomonas natatoria and erythromonas ursincola to the genus sphingomonas as sphingomonas suberifaciens (van bruggen et al 1990) comb. nov., sphingomonas natatoria (sly 1985) comb. nov., and sphingomonas ursincola (yurkov et al 1997) comb. nov. are herein proposed together with the emendation of genus sphingomonas. the ... | 1999 | 10385200 |
| coaggregation between aquatic bacteria is mediated by specific-growth-phase-dependent lectin-saccharide interactions. | coaggregating strains of aquatic bacteria were identified by partial 16s rrna gene sequencing. the coaggregation abilities of four strains of blastomonas natatoria and one strain of micrococcus luteus varied with culture age but were always maximum in the stationary phase of growth. each member of a coaggregating pair carried either a heat- and protease-sensitive protein (lectin) adhesin or a saccharide receptor, as coaggregation was reversed by sugars. | 2000 | 10618261 |
| emendation of the description of blastomonas natatoria (sly 1985) sly and cahill 1997 as an aerobic photosynthetic bacterium and reclassification of erythromonas ursincola yurkov et al. 1997 as blastomonas ursincola comb. nov. | photosynthetic properties of blastomonas natatoria (sly 1985) sly and cahill 1997, which had been recognized as being non-photosynthetic, were examined and compared with those of its close relative, the aerobic photosynthetic bacterium, erythromonas ursincola yurkov et al. 1997. hplc experiments demonstrated that bacteriochlorophyll a was present in a detectable amount in the lipid extract from b. natatoria dsm 3183t as well as that from e. ursincola dsm 9006t. the puf genes, encoding the protei ... | 2000 | 10843052 |
| chemotaxonomic characterisation of sphingomonas. | based on published results and investigations done for this study, chemotaxonomic characteristics of all validly described species of the genus sphingomonas, as well as unnamed strains of this genus and related genera such as rhizomonas and blastomonas, are presented. all representatives of this group, here designated as sphingomonads, contain ubiquinone (q-10). the two different polyamine patterns characterized either by the predominant polyamine sym-homospermidine or spermidine separate the sp ... | 1999 | 11423940 |
| phylogenetic relationships and coaggregation ability of freshwater biofilm bacteria. | nineteen numerically dominant heterotrophic bacteria from a freshwater biofilm were identified by 16s ribosomal dna gene sequencing, and their coaggregation partnerships were determined. phylogenetic trees showed that both distantly related and closely related strains coaggregated at intergeneric, intrageneric, and intraspecies levels. one strain, blastomonas natatoria 2.1, coaggregated with all 18 other strains and may function as a bridging organism in biofilm development. | 2002 | 12089055 |
| emendation of the genus sphingomonas yabuuchi et al. 1990 and junior objective synonymy of the species of three genera, sphingobium, novosphingobium and sphingopyxis, in conjunction with blastomonas ursincola. | the 16s rdna sequence similarities between the type strains of sphingomonas paucimobilis and 32 other sphingomonas species range from 90.2 to 99.6%. it might be possible to divide the genus into several new genera according to a dendrogram drawn from 16s rdna sequence similarity. however, the phenotypic and biochemical information needed to define clusters of strains representing distinct genera within this group of organisms was not previously available. although the cellular lipids of type str ... | 2002 | 12361250 |
| influence of growth environment on coaggregation between freshwater biofilm bacteria. | to characterize the expression of coaggregation between blastomonas natatoria 2.1 and micrococcus luteus 2.13 following growth in liquid culture, on agar and in an artificial biofilm matrix composed of poloxamer hydrogel. | 2004 | 15139931 |
| intergeneric coaggregation of non-flocculating acinetobacter spp. isolates with other sludge-constituting bacteria. | the ability of non-flocculating acinetobacter spp. isolates (a. johnsonii s35 and a. junii s33) to coaggregate with other sludge-constituting bacteria obtained from a sewage sludge sample was assessed by a spectrophotometric assay. a. johnsonii s35 showed significant coaggregation (aggregation index (ai)=70 to 99%) with 7 strains, bacillus cereus, blastomonas natatoria, mycobacterium sp., thermomonas brevis, and enterobacteriaceae family, identified by sequencing of 16s rrna genes. a. junii s33 ... | 2009 | 19332298 |
| monitoring the effects of chiral pharmaceuticals on aquatic microorganisms by metabolic fingerprinting. | the effects of the chiral pharmaceuticals atenolol and propranolol on pseudomonas putida, pseudomonas aeruginosa, micrococcus luteus, and blastomonas natatoria were investigated. the growth dynamics of exposed cultures were monitored using a bioscreen instrument. in addition, fourier-transform infrared (ft-ir) spectroscopy with appropriate chemometrics and high-performance liquid chromatography (hplc) were employed in order to investigate the phenotypic changes and possible degradation of the dr ... | 2010 | 20118361 |
| heterotrophic bacterial growth on hoses in a neonatal water distribution system. | after preliminary tests indicated an increased number of heterotrophic bacteria, we investigated possible sources of contamination in a neonatal intensive care unit (nicu) water distribution system. scanning electron microscopic examination of flexible metallic hoses associated with the system revealed the presence of a biofilm; partial 16s rdna sequencing revealed that the biofilm contained blastomonas natatoria. purgation of the water system three times a day, reinforced faucet cleaning, decre ... | 2010 | 20467253 |
| diversity and antibiotic resistance patterns of sphingomonadaceae isolates from drinking water. | sphingomonadaceae (n = 86) were isolated from a drinking water treatment plant (n = 6), tap water (n = 55), cup fillers for dental chairs (n = 21), and a water demineralization filter (n = 4). the bacterial isolates were identified based on analysis of the 16s rrna gene sequence, and intraspecies variation was assessed on the basis of atpd gene sequence analysis. the isolates were identified as members of the genera sphingomonas (n = 27), sphingobium (n = 28), novosphingobium (n = 12), sphingopy ... | 2011 | 21705522 |
| parasphingopyxis lamellibrachiae gen. nov., sp. nov., isolated from a marine organism in kagoshima bay, japan. | a gram-negative, aerobic, motile, orange-pigmented, slightly halophilic, rod-shaped bacterium, designated strain jamh 0132t, was isolated from a tubeworm trophosome in kagoshima bay, japan, and subjected to polyphasic taxonomic characterization. the isolate grew optimally at 28-30 °c and in the presence of 2-3 % nacl. chemotaxonomic analysis showed that q-10 was the predominant respiratory quinone and that c18:1 ω7c, c16:0 2-oh and c16:0 were the major fatty acids. sphingoglycolipids, phosphatid ... | 2011 | 22081711 |
| an experimental model for the spatial structuring and selection of bacterial communities. | community-level selection is an important concept in evolutionary biology and has been predicted to arise in systems that are spatially structured. here we develop an experimental model for spatially-structured bacterial communities based on coaggregating strains and test their relative fitness under a defined selection pressure. as selection we apply protozoan grazing in a defined, continuous culturing system. we demonstrate that a slow-growing bacterial strain blastomonas natatoria 2.1, which ... | 2011 | 21906633 |