| shewanella xiamenensis sp. nov., isolated from coastal sea sediment. | a gram-negative, motile, rod-shaped bacterium, strain s4(t), was isolated from coastal sediment collected off xiamen, china. the physiological and biochemical features of strain s4(t), determined using the api 20ne, api zym and biolog gn2 systems, were similar to those of members of the genus shewanella. phylogenetic analyses based on 16s rrna and gyrb gene sequences placed strain s4(t) in the genus shewanella, and it was most closely related to shewanella oneidensis and related species. dna-dna ... | 2010 | 19684319 |
| nosocomial peripancreatic infection associated with shewanella xiamenesis. | shewanella xiamenesis, a newly-established species originally from sea sediments, was repeatedly recovered from peripancreatic drainages in a patient and was the probable pathogen of hospital-acquired peripancreatic infection. commercially-available system misidentified it as shewanella putrefaciens, suggesting some previous reported cases with s. putrefaciens infection might be caused by other shewanella species. precise species identification of shewanella species usually requires gyrb sequenc ... | 2011 | 21546561 |
| origin of oxa-181, an emerging carbapenem-hydrolyzing oxacillinase, as a chromosomal gene in shewanella xiamenensis. | plasmid-mediated carbapenem-hydrolyzing ß-lactamases is becoming emerging threats in enterobacteriaceae. in particular, the carbapenem-hydrolyzing class d ß-lactamase oxa-48 and its derivative oxa-181 are increasingly worldwide reported. using a pcr-based strategy, environmental samples were screened for bla(oxa-48)-like genes. shewanella xiamenensis, an environmental species from marine and fresh water, was identified as the progenitor of the bla(oxa-181) gene. this work identifies the reservoi ... | 2011 | 21746953 |
| unravelling the interactions among microbial populations found in activated sludge during biofilm formation. | microorganisms colonize surfaces and develop biofilms through interactions that are not yet thoroughly understood, with important implications for water and wastewater systems. this study investigated the interactions between n-acyl homoserine lactone (ahl)-producing bacteria, yeasts and protists, and their contribution to biofilm development. sixty-one bacterial strains were isolated from activated sludge and screened for ahl production, with aeromonas sp. found to be the dominant ahl producer. ... | 2016 | 27306553 |
| decolorization of textile azo dye and congo red by an isolated strain of the dissimilatory manganese-reducing bacterium shewanella xiamenensis bc01. | shewanella xiamenensis bc01 (sxm) was isolated from sediment collected off xiamen, china and was identified based on the phylogenetic tree of 16s rrna sequences and the gyrb gene. this strain showed high activity in the decolorization of textile azo dyes, especially methyl orange, reactive red 198, and recalcitrant dye congo red, decolorizing at rates of 96.2, 93.0, and 87.5%, respectively. sxm had the best performance for the specific decolorization rate (sdr) of azo dyes compared to proteus ha ... | 2014 | 23974367 |
| effects of dietary administration of shewanella xiamenensis a-1, aeromonas veronii a-7, and bacillus subtilis, single or combined, on the grass carp (ctenopharyngodon idella) intestinal microbiota. | gut microbiota of grass carp plays an important role in host. however, detailed information regarding the changes of microbiota after probiotics administration in relation to the gastrointestinal microbiota is absent. in the present study, dietary administration of putative probiotics shewanella xiamenensis a-1, aeromonas veronii a-7, and bacillus subtilisstrains was conducted in grass carp to investigate if there is a discernible alteration in intestinal microbiota and whether the alteration is ... | 2017 | 28321827 |
| diversity of culturable bacterial communities in the intestinal tracts of goldfish (carassius auratus) and their ability to produce n-acyl homoserine lactone. | intestinal bacteria isolated from goldfish (carassius auratus) were identified based on 16 ribosomal rna (rrna) gene sequences and screened for their ability to produce n-acyl homoserine lactone (ahl), an autoinducer of the quorum sensing (qs) system. the 230 aerobes/facultative anaerobes that were isolated comprised members of the genera aeromonas (184 isolates), citrobacter (11), enterobacter (2), shewanella (28), vagococcus (1), and vibrio (4). among these genera, the two most abundant specie ... | 2017 | 28124783 |
| discovery of bla(oxa-199), a chromosome-based bla(oxa-48)-like variant, in shewanella xiamenensis. | bla(oxa-48) is a globally emerging carbapenemase-encoding gene. the progenitor of bla(oxa-48) appears to be a shewanella species. the presence of the bla(oxa-48)-like gene was investigated for two shewanella xiamenensis strains. | 2012 | 23110226 |
| environmental shewanella xiamenensis strains that carry blaoxa-48 or blaoxa-204 genes: additional proof for blaoxa-48-like gene origin. | | 2013 | 24018265 |
| draft genome sequence of the dye-decolorizing and nanowire-producing bacterium shewanella xiamenensis bc01. | shewanella xiamenensis bc01 is an important biodecolorizing and nanowire-producing bacterium which was found in xiamen, china. here, we present the draft genome sequence consisting of 4,677,169 bp (gc content, 46.21%) and 3,999 coded proteins. this information boosts insight into and understanding of the genetic evolution of shewanella species. | 2014 | 25103755 |
| enzymatic exploration of catalase from a nanoparticle producing and biodecolorizing algae shewanella xiamenensis bc01. | shewanella xiamenensis (sxm) was found to produce nanoparticles (nps) under aerobic condition. the oxidoreductase enzymatic activities including of catalase, manganese peroxidase, laccase, nadh dehydrogenase, flavin reductase, azoreductase and fe reductase are first investigated. catalase showed the greatest enzymatic activity among all oxidoreductases in sxm, which with strong activities in multiple substrates of abts, guaiacol and 2,6-dmp. the optimum temperature, ph, concentrations of h2o2 an ... | 2015 | 25306444 |
| identification of an integron containing the quinolone resistance gene qnra1 in shewanella xiamenensis. | this study investigated multidrug resistance in shewanella xiamenensis isolated from an estuarine water sample in china during 2014. this strain displayed resistance or decreased susceptibility to ampicillin, aztreonam, cefepime, cefotaxime, chloramphenicol, ciprofloxacin, erythromycin, kanamycin and trimethoprim-sulfamethoxazole. the antimicrobial resistance genes aaca3, blaoxa-199, qnra1 and sul1 were identified by pcr amplification and by sequencing. pulsed-field gel electrophoresis and dna h ... | 2015 | 26316545 |
| low prevalence of carbapenem-resistant bacteria in river water: resistance is mostly related to intrinsic mechanisms. | carbapenems are last-resort antibiotics to handle serious infections caused by multiresistant bacteria. the incidence of resistance to these antibiotics has been increasing and new resistance mechanisms have emerged. the dissemination of carbapenem resistance in the environment has been overlooked. the main goal of this research was to assess the prevalence and diversity of carbapenem-resistant bacteria in riverine ecosystems. the presence of frequently reported carbapenemase-encoding genes was ... | 2015 | 26430939 |
| complete genome sequence of an extensively drug-resistant shewanella xiamenensis strain isolated from algerian hospital effluents. | in this study, we present the first complete genome of an extensively drug-resistant strain of shewanella xiamenensis, collected from hospital effluents in algeria. this genome includes the chromosome and a large new plasmid harboring several drug-resistance genes. | 2016 | 27834700 |
| current trends of human infections and antibiotic resistance of the genus shewanella. | shewanella spp. are commonly known as environmental bacteria and are most frequently isolated from aquatic areas. currently, diseases syndromes and multidrug resistance have increasingly been reported in the genus shewanella. some species are associated with various infections, such as skin and soft tissue infections, as well as bacteremia. generally, these bacteria are opportunistic and mostly affect people with an impaired immune system. this genus is also a probable vehicle and progenitor of ... | 2017 | 28299457 |
| an outbreak of shewanella putrefaciens group in wild eels anguilla anguilla l. favoured by hypoxic aquatic environments. | microbiological analyses were conducted on wild eels from the l'albufera lake (spain). a total of 174 individuals were collected in two surveys (i.e. year 2008 and autumn-winter 2014) among those caught by local fishermen into the lagoon. the prevalence of shewanella putrefaciens group was 1.7% in 2008 and rose above 32% in 2014. it was due to an outbreak of shewanellosis that presented a morbidity rate of 64%. s. putrefaciens group strains were isolated as pure cultures from the sick eels that ... | 2016 | 27982438 |
| intestinal carriage of shewanella xiamenensis simulating carriage of oxa-48-producing enterobacteriaceae. | positivity for bla(oxa-48)-like carbapenemase genes was revealed by molecular testing of a surveillance rectal swab from a patient who had previously been colonized and infected by an oxa-48-producing klebsiella pneumoniae. positivity was due to a coincidental carriage of shewanella xiamenensis harboring a new bla(oxa-48)-like gene, while the k. pneumoniae was no longer present. | 2015 | 25766005 |
| a novel plasmid, psx1, harboring a new tn1696 derivative from extensively drug-resistant shewanella xiamenensis encoding oxa-416. | the whole genome sequencing of extensively drug-resistant shewanella xiamenensis t17 isolated from hospital effluents in algeria revealed the presence of a novel 268.4 kb plasmid designated psx1, which carries several antibiotic-resistance genes in the novel tn1696 derivative (tn6297), in addition to the chromosomal blaoxa-48-like gene (blaoxa-416). the presence of the plasmid was confirmed by nuclease s1-pfge analysis and transformation by electroporation into escherichia coli dh10b. tn6297 con ... | 2016 | 27505638 |