| characterization of n2o-producing xanthomonas-like isolates from biofilters as stenotrophomonas nitritireducens sp. nov., luteimonas mephitis gen. nov., sp. nov. and pseudoxanthomonas broegbernensis gen. nov., sp. nov. | a group of yellow-pigmented isolates from ammonia-supplied biofilters showed an unusual denitrification reaction. all strains reduced nitrite but not nitrate without production of nitrogen (n2). the only product found was nitrous oxide (n2o). the strains were divided into two clusters and one separate strain by their fatty acid profiles, which were similar to the fatty acid profiles of the genera xanthomonas and stenotrophomonas. analyses of the 165 rdna sequences showed that these clusters and ... | 2000 | 10826814 |
| thermomonas haemolytica gen. nov., sp. nov., a gamma-proteobacterium from kaolin slurry. | four aerobic, gram-negative bacterial strains isolated from kaolin slurry used in the production of paper were subjected to a polyphasic analysis and characterization to determine their taxonomic position. analysis of the 16s rdna sequences of the four strains revealed that they represent a new lineage within the gamma-proteobacteria, related to the genera xanthomonas, pseudoxanthomonas, stenotrophomonas, luteimonas, xylella and rhodanobacter. analysis of the quinone system, the polyamines, the ... | 2002 | 11931159 |
| pseudoxanthomonas taiwanensis sp. nov., a novel thermophilic, n2o-producing species isolated from hot springs. | two novel thermophilic bacterial strains, with an optimum growth temperature of between 50 and 60 degrees c, were isolated from the chi-ban hot springs in eastern taiwan. strains cb-225 and cb-226(t) were aerobic, thermophilic, non-sporulating, yellow-pigmented heterotrophic organisms. these strains exhibited an unusual denitrification reaction, reducing nitrite, but not nitrate, with the production of n2o only. on the basis of a phylogenetic analysis of 16s rdna sequences, dna-dna similarity da ... | 2002 | 12508883 |
| identification of bacteria contaminating pulp and a paper machine in a canadian paper mill. | over 100 bacteria from pulp and slime samples in a canadian paper mill were identified by partial sequencing of their 16s rdnas. seventy-one percent of the isolates could be assigned to a bacterial genus with a high level of confidence. another 12% exhibited at least 95% similarity within their 16s rdna sequence with unidentified organisms that originate from warm or wet environments. pseudomonas, bacillus, and pseudoxanthomonas isolates were represented at a relatively high proportion in both p ... | 2003 | 12715250 |
| pseudoxanthomonas mexicana sp. nov. and pseudoxanthomonas japonensis sp. nov., isolated from diverse environments, and emended descriptions of the genus pseudoxanthomonas finkmann et al. 2000 and of its type species. | three mesophilic bacteria (strains amx 26b(t), ur374_02 and 12-3(t)) isolated respectively from an anaerobic digester, human urine and urban riverside soil were characterized. cells were gram-negative, motile, non-sporulating, straight to curved rods with one polar flagellum and had a strictly respiratory metabolism with o(2) as the preferential terminal electron acceptor. phylogenetic analysis based on 16s rrna gene sequences revealed that all strains clustered within the xanthomonadaceae branc ... | 2004 | 15545466 |
| description of heterotrophic bacteria occurring in paper mills and paper products. | to isolate aerobic mesophilic bacilli and thermophilic bacteria from different paper mill samples and to evaluate their potential harmfulness. | 2004 | 15546414 |
| silanimonas lenta gen. nov., sp. nov., a slightly thermophilic and alkaliphilic gammaproteobacterium isolated from a hot spring. | a moderately thermophilic aerobic bacterium, strain 25-4t, was isolated from a hot spring at baekdoo mountain in korea. the cells were gram-negative, motile rods each having a polar flagellum. analysis of the 16s rrna gene sequence indicated that the strain represented a new lineage within the family 'xanthomonadaceae' of the 'gammaproteobacteria', being most closely related to the genera thermomonas, xanthomonas, luteimonas, pseudoxanthomonas, stenotrophomonas and xylella and having 16s rrna ge ... | 2005 | 15653905 |
| pseudoxanthomonas koreensis sp. nov. and pseudoxanthomonas daejeonensis sp. nov. | gram-negative, non-spore-forming, rod-shaped bacteria, t7-09(t) and tr6-08(t), were isolated from soil from a ginseng field in south korea and characterized to determine their taxonomic position. 16s rrna gene sequence analysis showed that the two isolates shared 99.5 % sequence similarity. strains t7-09(t) and tr6-08(t) were shown to belong to the proteobacteria and showed the highest levels of sequence similarity to pseudoxanthomonas broegbernensis dsm 12573(t) (98.1 %), pseudoxanthomonas mexi ... | 2005 | 15774663 |
| pseudoxanthomonas kaohsiungensis, sp. nov., a novel bacterium isolated from oil-polluted site produces extracellular surface activity. | during screening for biosurfactant-producing bacteria, a strain designated j36t was isolated from oil-polluted site near kaohsiung city located in southern taiwan. cells of this organism were gram-negative rods motile by means of a single polar flagellum. strain j36t grew well in complex media under optimum conditions of 35 degrees c and ph 7. the extracellular products of the strain expressed emulsification activity. during cultivation on olive oil as the sole carbon and energy source, the cult ... | 2005 | 15830806 |
| degradation of simazine by microorganisms isolated from soils of spanish olive fields. | the capability of the microbial flora isolated from an olive field soil from andalusia to mineralize simazine has been analyzed. from this soil, a group of bacteria capable of degrading 60 mg simazine litre(-1) in less than a week has been isolated. these microorganisms showed a low capacity for degrading this herbicide to carbon dioxide. when total dna was isolated from this group of bacteria, we were able to detect by pcr the presence of only the atzc and the trzn genes. some components of thi ... | 2005 | 16007568 |
| aquimonas voraii gen. nov., sp. nov., a novel gammaproteobacterium isolated from a warm spring of assam, india. | a bacterial strain designated gptsa 20(t), which was isolated from a warm spring in assam, india, was characterized by using a polyphasic approach. the cells were gram-negative, aerobic rods, which could not utilize or produce acid from most of the carbohydrates tested. the predominant fatty acids were c(15:0) iso (25.04%), c(17:1) iso omega9c (19.28%), c(16:0) iso (17.73%) and c(11:0) iso 3-oh (9.34%). the g+c content was 75 mol%. from 16s rrna gene sequence analysis (1433 nucleotides, continuo ... | 2005 | 16014470 |
| use of starch and potato peel waste for perchlorate bioreduction in water. | the cost of carbon substrates for microbial reduction of perchlorate (clo(4)(-)) is central to the success and competitiveness of a sustainable bioremediation strategy for clo(4)(-). this study explored the potential application of starch in combination with an amylolytic bacterial consortia and potato peel waste for clo(4)(-) bioreduction. we obtained a potent amylolytic bacterial consortium that consisted of a citrobacter sp. s4, streptomyces sp. s2, flavobacterium sp. s6, pseudoxanthomonas sp ... | 2005 | 16084965 |
| stable coexistence of five bacterial strains as a cellulose-degrading community. | a cellulose-degrading defined mixed culture (designated sf356) consisting of five bacterial strains (clostridium straminisolvens csk1, clostridium sp. strain fg4, pseudoxanthomonas sp. strain m1-3, brevibacillus sp. strain m1-5, and bordetella sp. strain m1-6) exhibited both functional and structural stability; namely, no change in cellulose-degrading efficiency was observed, and all members stably coexisted through 20 subcultures. in order to investigate the mechanisms responsible for the obser ... | 2005 | 16269746 |
| molecular characterization of an oil-degrading cyanobacterial consortium. | recent studies have shown that the cyanobacterium microcoleus chthonoplastes forms a consortium with heterotrophic bacteria present within the cyanobacterial sheath. these studies also show that this consortium is able to grow in the presence of crude oil, degrading aliphatic heterocyclic organo-sulfur compounds as well as alkylated monocyclic and polycyclic aromatic hydrocarbons. in this work, we characterize this oil-degrading consortium through the analysis of the 16s rrna gene sequences. we ... | 2005 | 16341637 |
| pseudoxanthomonas suwonensis sp. nov., isolated from cotton waste composts. | three strains, 4m1t, 4m9 and 4m12, were isolated from cotton waste composts. these strains are gram-negative, aerobic and non-spore-forming rods. 16s rrna gene sequence comparisons demonstrated that these isolates were clustered phylogenetically within the genus pseudoxanthomonas and 4m1t revealed sequence similarity levels of 96.9-99.0% to six pseudoxanthomonas species with validly published names. according to dna-dna hybridization, relatedness values between 4m1t and six known pseudoxanthomon ... | 2006 | 16514045 |
| pseudoxanthomonas kalamensis sp. nov., a novel gammaproteobacterium isolated from johnston atoll, north pacific ocean. | an aerobic, mesophilic bacterium, strain ja40t, was isolated from soil contaminated with polycyclic aromatic hydrocarbons and polychlorinated biphenyls collected from johnston atoll in the north pacific ocean. the strain formed yellow-pigmented colonies on heterotrophic media. the cells were gram-negative, non-motile, non-sporulating rods. the strain reduced nitrite to nitrous oxide, the dna g+c content was 64 mol% and the dominant fatty acids were 15 : 0 iso, 17 : 1 iso cis7 and 11 : 0 iso 3-oh ... | 2006 | 16627662 |
| thermophilic aerobic granular biomass for enhanced settleability. | aerobic biological wastewater treatment at thermophilic (ca. 55 degrees c) temperatures notoriously produces biomass that flocculates poorly or not at all. contrary to this, thermophilic aerobic biomass that settled well in sequencing batch reactors was cultured with sludge volume index (svi) values as low as 60ml/g. a mixture of granular and flocculant biomass resulted when closed reactors were sparged with recirculated reactor headspace gas containing some air, whereas a conventionally aerated ... | 2007 | 17229452 |
| pseudoxanthomonas yeongjuensis sp. nov., isolated from soil cultivated with korean ginseng. | a gram-negative, strictly aerobic, non-spore-forming bacterium, motile by means of single polar flagellum and rod-shaped, designated strain gr12-1(t), was isolated from soil of a ginseng field in yeongju region, korea. phylogenetic analysis based on 16s rrna gene sequences indicated that this strain is related to members of the genus pseudoxanthomonas, showing sequence similarity values ranged from 92.3 to 96.2 %. this organism grew at 5-33 degrees c, with optimum growth at 28 degrees c. strain ... | 2007 | 17329800 |
| pseudoxanthomonas spadix sp. nov., isolated from oil-contaminated soil. | a bacterial isolate from a sample of oil-contaminated soil was characterized using a polyphasic taxonomic approach. comparative analysis of the 16s rrna gene sequence showed that this isolate constituted a distinct phyletic line within the genus pseudoxanthomonas, displaying >3.7 % sequence divergence with respect to recognised pseudoxanthomonas species. the genus assignment was confirmed by a chemotaxonomic analysis, which revealed the presence of a fatty acid profile characteristic of members ... | 2007 | 17684265 |
| electrochemical inactivation of paper mill bacteria with mixed metal oxide electrode. | in this study electrochemical inactivation of selected bacteria living in paper mill circulating waters was investigated. three aerobic bacteria species (deinococcus geothermalis, pseudoxanthomonas taiwanensis and meiothermus silvanus) were inactivated effectively (>2 log) at a mixed metal oxide (mmo) electrode in 3 min. the influence of parameters, such as current density and initial ph or chloride concentration of synthetic paper machine water (spw) on the inactivation efficiency were studied. ... | 2008 | 18206301 |
| microbe repelling coated stainless steel analysed by field emission scanning electron microscopy and physicochemical methods. | coating of stainless steel with diamond-like carbon or certain fluoropolymers reduced or almost eliminated adhesion and biofilm growth of staphylococcus epidermidis, deinococcus geothermalis, meiothermus silvanus and pseudoxanthomonas taiwanensis. these species are known to be pertinent biofilm formers on medical implants or in the wet-end of paper machines. field emission scanning electron microscopic analysis showed that staph. epidermidis, d. geothermalis and m. silvanus grew on stainless ste ... | 2008 | 18379832 |
| dgge and t-rflp analysis of bacterial succession during mushroom compost production and sequence-aided t-rflp profile of mature compost. | the amount of button mushroom (agaricus bisporus) harvested from compost is largely affected by the microbial processes taking place during composting and the microbes inhabiting the mature compost. in this study, the microbial changes during the stages of this specific composting process were monitored, and the dominant bacteria of the mature compost were identified to reveal the microbiological background of the favorable properties of the heat-treated phase ii mushroom compost. 16s ribosomal ... | 2009 | 18654815 |
| pseudoxanthomonas sacheonensis sp. nov., isolated from btex-contaminated soil in korea, transfer of stenotrophomonas dokdonensis yoon et al. 2006 to the genus pseudoxanthomonas as pseudoxanthomonas dokdonensis comb. nov. and emended description of the genus pseudoxanthomonas. | a gram-negative, strictly aerobic, rod-shaped bacterium, designated strain bd-c54(t), was isolated from btex (benzene, toluene, ethylbenzene and xylenes)-contaminated soil in sacheon, korea. growth of strain bd-c54(t) was observed at 15-35 degrees c (optimum 25-30 degrees c) and ph 6.0-9.5 (optimum ph 7.0-8.0). the predominant fatty acids were iso-c(15:0), iso-c(17:1)omega9c, iso-c(11:0) 3-oh, iso-c(16:0), iso-c(11:0) and iso-c(17:0). the strain contained large amounts of phosphatidylethanolamin ... | 2008 | 18768635 |
| characterisation of aerobically grown non-spore-forming bacteria from paper mill pulps containing recycled fibres. | a total of 179 non-spore-forming bacteria aerobically growing on nutrient agar, plate count agar or in specific enrichment conditions for salmonella, campylobacteria, listeria, yersinia or staphylococci, were isolated from 16 untreated paper mill pulps. after phenotypical screening the isolates were characterised by automated ribotyping and partial sequencing of the 16s rrna gene. they could be divided into seven taxonomical classes representing 63 taxa (species): actinobacteria (11 species), ba ... | 2009 | 18820960 |
| influence of soil components on the biodegradation of benzene, toluene, ethylbenzene, and o-, m-, and p-xylenes by the newly isolated bacterium pseudoxanthomonas spadix bd-a59. | a bacterium designated strain bd-a59, able to degrade all six benzene, toluene, ethylbenzene, and o-, m-, and p-xylene (btex) compounds, was isolated by plating gasoline-contaminated sediment from a gasoline station in geoje, republic of korea, without enrichment, on minimal salts basal (msb) agar containing 0.01% yeast extract, with btex as the sole carbon and energy source. taxonomic analyses showed that the isolate belonged to pseudoxanthomonas spadix, and until now, the genus pseudoxanthomon ... | 2008 | 18835999 |
| carbon utilization profiles of bacteria colonizing the headbox water of two paper machines in a canadian mill. | forty-one bacterial strains isolated from the headbox water of two machines in a canadian paper mill were associated with the genera asticcacaulis, acidovorax, bacillus, exiguobacterium, hydrogenophaga, pseudomonas, pseudoxanthomonas, staphylococcus, stenotrophomonas based on the sequence of their 16s rrna genes. the metabolic profile of these strains were determined using biolog ecoplate, and the bacteria were divided into four metabolic groups. metabolic profiles of the bacterial communities c ... | 2009 | 19137341 |
| selection of indicator bacteria based on screening of 16s rdna metagenomic library from a two-stage anoxic-oxic bioreactor system degrading azo dyes. | dye degradation has gained attention of late due to indiscriminate disposal from user industries. enhancing efficiency of biological treatment provides a cheaper alternative vis-à-vis other advanced technologies. dye molecules are metabolized biologically via anoxic and oxic treatments. in this study, bacterial community surviving on dye effluent working in anoxic-oxic bioreactor was analyzed using 16s rdna approach. azo-dye decolorizing and degrading bacterial community was enriched in lab-scal ... | 2010 | 19748265 |
| two novel pyrene-degrading diaphorobacter sp. and pseudoxanthomonas sp. isolated from soil. | two new bacterial strains, kotlb and rn402, which have the ability to utilize pyrene as their sole source of carbon and energy, were isolated from soil. strains kotlb and rn402 degraded 99% of 100 mg/l of pyrene in liquid cultures within 16 days. besides pyrene, both strains also degraded 100 mg/l of phenanthrene almost completely within 8 days and degraded 99% and 55% of 100 mg/l of fluoranthene within 24 days, respectively. 16s rdna-based phylogenetic analysis suggested that strains kotlb and ... | 2009 | 19914581 |
| enhanced degradation of phenanthrene in a solid-liquid two-phase partitioning bioreactor via sonication. | the current article examined the feasibility of inducing improved delivery and degradation of phenanthrene in a solid-liquid partitioning bioreactor system at bench scale by means of ultrasonic energy input. initial degradation rates of phenanthrene by a microbial consortium, delivered from desmopan, were improved 2.7-fold in the presence of sonication relative to unsonicated controls. results demonstrated that an operating window involving on/off sonication cycling improved substrate delivery a ... | 2010 | 19998286 |
| diversity of sulfur-oxidizing bacteria in greenwater system of coastal aquaculture. | reduced sulfur compounds produced by the metabolism are the one of the major problems in aquaculture. in the present study, herbivorous fishes have been cultured as biomanipulators for secretions of slime, which enhanced the production of greenwater containing beneficial bacteria. the genes encoding soxb which is largely unique to sulfur-oxidizing bacteria (sob) due to its hydrolytic function has been targeted for examining the diversity of sob in the green water system of coastal aquaculture. n ... | 2010 | 20069462 |
| phylogenetic diversity of alkaline protease-producing psychrotrophic bacteria from glacier and cold environments of lahaul and spiti, india. | the diversity of proteolytic bacteria associated with a glacier and cold environment soils from three different locations in lahaul and spiti, india was investigated. two hundred seventeen bacterial strains were isolated in pure culture. subsequently these strains were screened for protease-production and one hundred nine showed protease production. from these protease producing psychrotrophic bacteria twenty showing high enzyme production at low temperature and alkaline ph were characterized an ... | 2010 | 20082368 |
| diversity and activity of pah-degrading bacteria in the phyllosphere of ornamental plants. | phyllosphere bacteria on ornamental plants were characterized based on their diversity and activity towards the removal of polycyclic aromatic hydrocarbons (pahs), the major air pollutants in urban area. the amounts of pah-degrading bacteria were about 1-10% of the total heterotrophic phyllosphere populations and consisted of diverse bacterial species such as acinetobacter, pseudomonas, pseudoxanthomonas, mycobacterium, and uncultured bacteria. bacterial community structures analyzed by polymera ... | 2010 | 20107780 |
| pyrosequencing reveals a highly diverse and cultivar-specific bacterial endophyte community in potato roots. | in this study, we examined the bacterial endophyte community of potato (solanum tuberosum) cultivar/clones using two different molecular-based techniques (bacterial automated ribosomal intergenic spacer analysis (b-arisa) and pyrosequencing). b-arisa profiles revealed a significant difference in the endophytic community between cultivars (permanova, p < 0.001), and canonical correspondence analysis showed a significant correlation between the community structure and plant biomass (p = 0.001). py ... | 2010 | 20414647 |
| the effect of carbon source on microbial community structure and cr(vi) reduction rate. | in the present work, the effect of the carbon source on microbial community structure in batch cultures derived from industrial sludge and hexavalent chromium reduction was studied. experiments in aerobic batch reactors were carried out by amending industrial sludge with two different carbon sources: sodium acetate and sucrose. in each of the experiments performed, four different initial cr(vi) concentrations of: 6, 13, 30 and 115 mg/l were tested. the change of carbon source in the batch reacto ... | 2010 | 20552669 |
| anaerobic oxidation of arsenite linked to chlorate reduction. | microorganisms play a significant role in the speciation and mobility of arsenic in the environment. in this study, the oxidation of arsenite [as(iii)] to arsenate [as(v)] linked to chlorate (clo₃⁻) reduction was shown to be catalyzed by sludge samples, enrichment cultures (ecs), and pure cultures incubated under anaerobic conditions. no activity was observed in treatments lacking inoculum or with heat-killed sludge, or in controls lacking clo₃⁻. the as(iii) oxidation was linked to the complete ... | 2010 | 20729322 |
| characterization of a defined cellulolytic and xylanolytic bacterial consortium for bioprocessing of cellulose and hemicelluloses. | diminishing fossil fuel reserve and increasing cost of fossil hydrocarbon products have rekindled worldwide effort on conversion of lignocellloloses (plant biomass) to renewable fuel. inedible plant materials such as grass, agricultural, and logging residues are abundant renewable natural resources that can be converted to biofuel. in an effort to mimic natural cellulolytic-xylanolytic microbial community in bioprocessing of lignocelluloses, we enriched cellulolytic-xylanolytic microorganisms, p ... | 2011 | 20859703 |
| pseudoxanthomonas indica sp. nov. isolated from a hexachlorocyclohexane dumpsite in north india. | the taxonomic status of a bacterial strain, designated p15(t), which was isolated from soil of an open hexachlorocyclohexane (hch) dumpsite, was determined using a polyphasic approach. comparative analysis of the 16s rrna gene sequence showed that strain p15(t) displayed high sequence similarities (94.8 - 97.2 %) to members of the genus pseudoxanthomonas. highest sequence similarity was shown with pseudoxanthomonas mexicana dsm 17121(t) (97.2 %) and pseudoxanthomonas japonensis dsm 17109(t) (97. ... | 2010 | 20870889 |
| pseudoxanthomonas icgebensis sp. nov., isolated from the midgut of anopheles stephensi field-collected larvae. | a gram-negative, aerobic, golden yellow, rod-shaped bacterium, a strain designated icgeb-l15(t), was isolated from the larval midgut of anopheles stephensi captured in district jhajjar, haryana, india. the strain icgeb-l15(t) grows at 30-50°c (optimum 30-37°c), ph 6.5-8.5 (optimum 7.0-8.0) and in the presence of 2% nacl. the major fatty acids were iso-c(15:0) (22.5% of total fatty acid), anteiso-c(15:0) (16.5%), iso-c(17:1) 9c (10.3%), iso-c(16:0) (7.3%), c(16:0) (6.1%), and iso-c(11:0) (5.3%). ... | 2010 | 21046337 |
| root exudates modify bacterial diversity of phenanthrene degraders in pah-polluted soil but not phenanthrene degradation rates. | to determine whether the diversity of phenanthrene-degrading bacteria in an aged polycyclic aromatic hydrocarbon (pah) contaminated soil is affected by the addition of plant root exudates, dna stable isotope probing (sip) was used. microcosms of soil with and without addition of ryegrass exudates and with ¹³c-labelled phenanthrene (phe) were monitored over 12 days. phe degradation was slightly delayed in the presence of added exudate after 4 days of incubation. after 12 days, 68% of added phe di ... | 2010 | 21087382 |
| biofilm-forming bacteria with varying tolerance to peracetic acid from a paper machine. | biofilms cause runnability problems in paper machines and are therefore controlled with biocides. peracetic acid is usually effective in preventing bulky biofilms. this study investigated the microbiological status of a paper machine where low concentrations (≤15 ppm active ingredient) of peracetic acid had been used for several years. the paper machine contained a low amount of biofilms. biofilm-forming bacteria from this environment were isolated and characterized by 16s rrna gene sequencing, ... | 2010 | 21161323 |
| effect of seed sludge on characteristics and microbial community of aerobic granular sludge. | aerobic granular sludge was cultivated by using different kinds of seed sludge in sequencing batch airlift reactor. the influence of seed sludge on physical and chemical properties of granular sludge was studied; the microbial community structure was probed by using scanning electron microscope and polymerase chain reaction-denaturing gradient gel electrophoresis (pcr-dgge). the results showed that seed sludge played an important role on the formation of aerobic granules. seed sludge taken from ... | 2010 | 21174960 |
| pyrosequence analysis of bacterial communities in aerobic bioreactors treating polycyclic aromatic hydrocarbon-contaminated soil. | two aerobic, lab-scale, slurry-phase bioreactors were used to examine the biodegradation of polycyclic aromatic hydrocarbons (pahs) in contaminated soil and the associated bacterial communities. the two bioreactors were operated under semi-continuous (draw-and-fill) conditions at a residence time of 35 days, but one was fed weekly and the other monthly. most of the quantified pahs, including high-molecular-weight compounds, were removed to a greater extent in the weekly-fed bioreactor, which ach ... | 2011 | 21369833 |
| culturable diversity of heterotrophic bacteria in forlidas pond (pensacola mountains) and lundström lake (shackleton range), antarctica. | cultivation techniques were used to study the heterotrophic bacterial diversity in two microbial mat samples originating from the littoral zone of two continental antarctic lakes (forlidas pond and lundström lake) in the dufek massif (within the pensacola mountains group of the transantarctic mountains) and shackleton range, respectively. nearly 800 isolates were picked after incubation on several growth media at different temperatures. they were grouped using a whole-genome fingerprinting techn ... | 2011 | 21424822 |
| pseudoxanthomonas jiangsuensis sp. nov., a ddt-degrading bacterium isolated from a long-term ddt-polluted soil. | a gram-negative, strictly aerobic, rod-shaped bacterium, designated strain wax(t), was isolated from ddt-contaminated soil in yangzhou, china. growth of strain wax(t) was observed at 10-45°c (optimum 30°c) and ph 5.0-10.0 (optimum ph 7.0-8.0). the predominant fatty acids were iso c(15:0) (32.21%) and anteiso c(15:0) (22.2%). the strain contained large amounts of the polar lipids diphosphatidylglycerol, phosphatidylethanolamine, and phosphatidylglycerol, but small amounts of an unknown amino-grou ... | 2011 | 21445548 |
| adsorption of bacteria and polycations on model surfaces of cellulose, hemicellulose and wood extractives studied by qcm-d. | quartz crystal microbalance with dissipation monitoring (qcm-d), atomic force microscopy (afm) and field emission scanning electron microscopy (fesem) were used as the tools to study the adsorption of bacteria onto surfaces of silica and polystyrene coated with materials related to papermaking. cationic polyelectrolytes used as fixatives and retention aids in paper industry were found to promote irreversible adsorption of the ubiquitous white water bacterium, pseudoxanthomonas taiwanensis, onto ... | 2011 | 21507615 |
| the development of a liquid formulation of pseudoxanthomonas sp. rn402 and its application in the treatment of pyrene-contaminated soil. | aim: to develop a liquid formulation of pseudoxanthomonas sp. rn402 for prolonged storage and maintaining high survival rates and pyrene biodegradability. methods and results: liquid formulations of rn402, designated as l-rn402, were prepared by suspending bacterial cells (10(9) cfu ml(-1) ) in various buffers. analysis found that phosphate buffer containing glycerol maintained high survival rate (94%) as well as pyrene biodegradability of bacteria after a 30-day storage. this l-rn402 could b ... | 2011 | 21518158 |
| a catabolic pathway for the degradation of chrysene by pseudoxanthomonas sp. pnk-04. | the chrysene-degrading bacterium pseudoxanthomonas sp. pnk-04 was isolated from a coal sample. three novel metabolites, hydroxyphenanthroic acid, 1-hydroxy-2-naphthoic acid and salicylic acid, were identified by tlc, hplc and ms. key enzyme activities, namely 1-hydroxy-2-naphthoate hydroxylase, 1,2-dihydroxynaphthalene dioxygenase, salicylaldehyde dehydrogenase and catechol-1,2-dioxygenase, were noted in the cell-free extract. these results suggest that chrysene is catabolized via hydroxyphenant ... | 2011 | 21545490 |
| determinative factors of competitive advantage between aerobic bacteria for niches at the air-liquid interface. | we focused on bacterial interspecies relationships at the air-liquid interface where the formation of pellicles by aerobes was observed. although an obligate aerobe (brevibacillus sp. m1-5) was initially dominant in the pellicle population, a facultative aerobe (pseudoxanthomonas sp. m1-3) emerged and the viability of m1-5 rapidly decreased due to severe competition for oxygen. supplementation of the medium with carbohydrates allowed the two species to coexist at the air-liquid interface. these ... | 2010 | 21576889 |
| characterization of a microbial consortium capable of degrading lignocellulose. | a microbial consortium, designated wcs-6, was established by successive subcultivation in the presence of rice straw under static conditions. the degradation efficiencies of wsc-6 for 0.5g filter paper, cotton and rice straw after 3days of cultivation were 99.0-¦0.7%, 76.9-¦1.5% and 81.3-¦0.8%, respectively as determined by gravimetrical methods. nine bacterial isolates were obtained from wcs-6 plated under aerobic conditions, and sequencing of their 16s rdna indicated that these bacteria were r ... | 2011 | 21831630 |
| pseudoxanthomonas bacteria that drive deposit formation of wood extractives can be flocculated by cationic polyelectrolytes. | runnability problems caused by suspended bacteria in water using industries, have, in contrast to biofilms, received little attention. we describe here that pseudoxanthomonas taiwanensis, a wide-spread and abundant bacterium in paper machine water circuits, aggregated dispersions of wood extractives ("pitch") and resin acid, under conditions prevailing in machine water circuits (10(9)-ácfu-áml(-1), ph 8, 45-¦c). the aggregates were large enough (up to 50-á++m) so that they could be expected to c ... | 2011 | 21720776 |
| Phenanthrene degradation by Pseudoxanthomonas sp. DMVP2 isolated from hydrocarbon contaminated sediment of Amlakhadi canal, Gujarat, India. | Amlakhadi canal, flowing through Ankleshwar (Gujarat, India) has been impinged with various xenobiotic compounds, released in industrial discharges, over last many decades. Twenty five bacterial strains capable of phenanthrene degradation were isolated from sediments of Amlakhadi canal. The best strain amongst them was identified as Pseudoxanthomonas sp. DMVP2 based on 16S rRNA gene sequence analysis, and selected for further studies. Experiments were carried out for optimization of abiotic para ... | 2011 | 22169141 |
| Complete Genome Sequence of the BTEX-Degrading Bacterium Pseudoxanthomonas spadix BD-a59. | Pseudoxanthomonas spadix BD-a59, able to metabolize all six BTEX (benzene, toluene, ethylbenzene, and o-, m-, and p-xylene) compounds, was isolated from gasoline-contaminated sediment. Here, we report the complete 3.45-Mb genome sequence and annotation of strain BD-a59. These advance the understanding of strain BD-a59's genomic properties and pollutant metabolic versatility. | 2012 | 22207748 |
| Complete sequencing of the bla(NDM-1)-positive IncA/C plasmid from Escherichia coli ST38 isolate suggests a possible origin from plant pathogens. | The complete sequence of the plasmid pNDM-1_Dok01 carrying New Delhi metallo-ß-lactamase (NDM-1) was determined by whole genome shotgun sequencing using Escherichia coli strain NDM-1_Dok01 (multilocus sequence typing type: ST38) and the transconjugant E. coli DH10B. The plasmid is an IncA/C incompatibility type composed of 225 predicted coding sequences in 195.5 kb and partially shares a sequence with bla(CMY-2)-positive IncA/C plasmids such as E. coli AR060302 pAR060302 (166.5 kb) and Salmonell ... | 2011 | 21966500 |
| the role of nutrients in the biodegradation of 2,4,6-trinitrotoluene in liquid and soil. | the widely used explosive 2,4,6-trinitrotoluene (tnt) has residues that are potentially explosive, toxic, and mutagenic. tnt and other explosives can be degraded by microorganisms; however, biostimulation is needed for process efficiency. to investigate the effectiveness of using biostimulation to degrade tnt, we added varying concentrations of a nutrient amendment consisting of inorganic salts, plant extracts, and molasses to soil and liquid media. for the inoculum we used a consortium of bacte ... | 2012 | 22245864 |