| polycyclic aromatic hydrocarbon degradation by a new marine bacterium, neptunomonas naphthovorans gen. nov., sp. nov. | two strains of bacteria were isolated from creosote-contaminated puget sound sediment based on their ability to utilize naphthalene as a sole carbon and energy source. when incubated with a polycyclic aromatic hydrocarbon (pah) compound in artificial seawater, each strain also degraded 2-methylnaphthalene and 1-methylnaphthalene; in addition, one strain, nag-2n-113, degraded 2,6-dimethylnaphthalene and phenanthrene. acenaphthene was not degraded when it was used as a sole carbon source but was d ... | 1999 | 9872786 |
| degradation of chlorinated biphenyl, dibenzofuran, and dibenzo-p-dioxin by marine bacteria that degrade biphenyl, carbazole, or dibenzofuran. | marine bacterial strains (bp-ph, car-sf, and dbf-mak) were isolated using biphenyl, carbazole (car), or dibenzofuran (df) respectively as substrates for growth. their 16s ribosomal dna sequences showed that the species closest to strain bp-ph, strain car-sf, and strain dbf-mak are alteromonas macleodii (96.3% identity), neptunomonas naphthovorans (93.1% identity), and cycloclasticus pugetii (97.3% identity), respectively. the metabolites produced suggested that strain car-sf degrades car via dio ... | 2003 | 12834291 |
| population structure of alexandrium (dinophyceae) cyst formation-promoting bacteria in hiroshima bay, japan. | a total of 31 bacterial isolates that have potential alexandrium cyst formation-promoting activity (alex-cfpb) were isolated from hiroshima bay (japan), which is characterized by seasonal blooms of the toxic dinoflagellate alexandrium tamarense. the population structure of alex-cfpb was analyzed by means of restriction fragment length polymorphism analysis of the 16s rrna genes (16s rdna). fourteen ribotypes, a to n, were observed among the 31 isolates of alex-cfpb by using four restriction enzy ... | 2003 | 14602614 |
| effect of a commercial alcohol ethoxylate surfactant (c11-15e7) on biodegradation of phenanthrene in a saline water medium by neptunomonas naphthovorans. | biodegradation of poorly soluble polycyclic aromatic hydrocarbons (pahs) has been a challenge in bioremediation. in recent years, surfactant-enhanced bioremediation of pah contaminants has attracted great attention in research. in this study, biodegradation of phenanthrene as a model pahs solubilized in saline micellar solutions of a biodegradable commercial alcohol ethoxylate nonionic surfactant was investigated. the critical micelle concentration (cmc) of the surfactant and its solubilization ... | 2005 | 15727155 |
| natural microbial diversity in superficial sediments of milazzo harbor (sicily) and community successions during microcosm enrichment with various hydrocarbons. | hydrocarbon-contaminated superficial sediments collected from the harbor of milazzo (tirrenean sea, northern sicily), a zone strongly affected by anthropogenic activities, were examined for in situ biodegradative capacities. a culture-independent molecular phylogenetic approach was used to study the influence of hydrocarbon and nutrient addition on the activity and diversity of the indigenous microbiota during a microcosm evaluation. the autochthonous microbial community in non-polluted sediment ... | 2005 | 16104865 |
| nitrincola lacisaponensis gen. nov., sp. nov., a novel alkaliphilic bacterium isolated from an alkaline, saline lake. | a novel alkaliphilic bacterium, strain 4cat, was isolated from decomposing wood taken from the shore of soap lake, a saline, alkaline lake in grant county, wa, usa. cells of the isolate were gram-negative, asporogenous, short, motile rods that utilized only a limited range of organic acids as sole carbon and energy sources. in addition to oxygen, the strain possessed the ability to reduce in the presence of acetate. strain 4cat was oxidase- and catalase-positive; it degraded tween 60, but not dn ... | 2005 | 16280482 |
| isolation and characterization of pseudoalteromonas strains with divergent polycyclic aromatic hydrocarbon catabolic properties. | fifteen strains of polycyclic aromatic hydrocarbon (pah)-catabolizing bacteria, identified as pseudoalteromonas spp. were isolated from eagle harbor, puget sound, usa, using a most probable number procedure in which naphthalene or phenanthrene was the sole carbon and energy source. despite having identical 16s rdna sequences, some catabolized many pahs, whereas others oxidized only naphthalenes. a putative naphthalene 1,2-dioxygenase gene fragment was polymerase chain reaction-amplified from the ... | 2006 | 16343332 |
| amphritea atlantica gen. nov., sp. nov., a gammaproteobacterium from the logatchev hydrothermal vent field. | a novel gram-negative, motile, aerobic rod-shaped bacterium was isolated from a bathymodiolus sp. specimen collected from the logatchev hydrothermal vent field at the mid-atlantic ridge. the novel strain, m41(t), was catalase- and oxidase-positive and metabolised various carbohydrates and amino acids. it grew well in marine broth with an optimal growth temperature of 31 degrees c to 34 degrees c (range 4-40 degrees c) and salinity requirement of 3% (range 0.3-9%). the ph range for growth was ph ... | 2008 | 18175678 |
| spongiibacter marinus gen. nov., sp. nov., a halophilic marine bacterium isolated from the boreal sponge haliclona sp. 1. | strain hal40b(t) was isolated from the marine sponge haliclona sp. 1 collected at the sula ridge off the norwegian coast and characterized by physiological, biochemical and phylogenetic analyses. the isolate was a small rod with a polar flagellum. it was aerobic, gram-negative and oxidase- and catalase-positive. optimal growth was observed at 20-30 degrees c, ph 7-9 and in 3 % nacl. substrate utilization tests were positive for arabinose, tween 40 and tween 80. enzyme tests were positive for alk ... | 2008 | 18319460 |
| neptunomonas japonica sp. nov., an osedax japonicus symbiont-like bacterium isolated from sediment adjacent to sperm whale carcasses off kagoshima, japan. | novel bacterial species were isolated from sediments adjacent to sperm whale carcasses off kagoshima, japan, at a depth of 226-246 m. the isolated strains, jamm 0745t, jamm 1380, jamm 1475 and jamm 1610, were gram-negative, rod-shaped, non-spore-forming and motile by means of a single polar or subterminal flagellum. phylogenetic analysis based on 16s rrna gene sequences of the novel isolates indicated a relationship to a symbiotic bacterial clone of the polychaete osedax japonicus (99.6-99.9 % s ... | 2008 | 18398184 |
| effect of nonionic surfactants on biodegradation of phenanthrene by a marine bacteria of neptunomonas naphthovorans. | biodegradation of three nonionic surfactants, tergitol 15-s-x (x=7, 9 and 12), and their effects on the biodegradation of phenanthrene by marine bacteria, neptunomonas naphthovorans, were studied. the experimental outcomes could be fit well with the first-order biodegradation kinetics model. it was observed that the biodegradability of these surfactants decreased with an increase in the chain length of the hydrophilic moiety of the surfactant. when surfactant concentrations initially present wer ... | 2009 | 18554784 |
| marinobacterium marisflavi sp. nov., isolated from a costal seawater. | a marine bacterium designated strain imcc4074(t) was isolated from surface seawater collected off incheon port, the yellow sea, and subjected to a polyphasic taxonomy. the strain was gram-negative, chemoheterotrophic, slightly halophilic, strictly aerobic, and motile rods. based on 16s rrna gene sequence comparisons, the strain was most closely related to marinobacterium litorale kctc 12756(t) (93.9%) and shared low 16s rrna gene sequence similarities with members of the genus marinobacterium (9 ... | 2009 | 19189183 |
| neptunomonas antarctica sp. nov., isolated from marine sediment. | a gram-negative, motile, oxidase- and catalase-positive and facultatively aerobic bacterium, designated s3-22t, was isolated from marine sediment of the nella fjord, antarctica. strain s3-22t reduced nitrate to nitrite and grew at ph 6.0-8.0, at 4-25 degrees c and with 0.5-5% (w/v) nacl. it contained q-8 as the only respiratory quinone and summed feature 3 (c16:1omega7c and/or iso-c15:0 2-oh), c16:0 and c18:1omega7c as the major cellular fatty acids. the genomic dna g+c content was 45.6 mol%. ph ... | 2010 | 19801396 |
| neptunomonas concharum sp. nov., isolated from a dead ark clam from the bay of gang-jin in south korea, and emended description of the genus neptunomonas. | a novel gram-negative, facultative anaerobic, motile and rod-shaped bacterial strain, lhw37t, belonging to the class gammaproteobacteria, was isolated from a dead ark clam in the south coast of korea. strain lhw37t grew optimally at 37 °c in 2 % (w/v) nacl and ph 7.0-8.0. the predominant cellular fatty acids were c18:1 ω7c and c16:1ω7c/iso-c15 2-oh. the major isoprenoid quinone was ubiquinone-8 (q-8). the dominant polar lipids were phosphatidylenthanolamine and phosphatidylglycerol. phylogenetic ... | 2011 | 22199221 |