| siderophore typing, a powerful tool for the identification of fluorescent and nonfluorescent pseudomonads. | a total of 301 strains of fluorescent pseudomonads previously characterized by conventional phenotypic and/or genomic taxonomic methods were analyzed through siderotyping, i.e., by the isoelectrophoretic characterization of their main siderophores and pyoverdines and determination of the pyoverdine-mediated iron uptake specificity of the strains. as a general rule, strains within a well-circumscribed taxonomic group, namely the species pseudomonas brassicacearum, pseudomonas fuscovaginae, pseudo ... | 2002 | 12039729 |
| opposite enantioselectivities of two phenotypically and genotypically similar strains of pseudomonas frederiksbergensis in bacterial whole-cell sulfoxidation. | soil samples were screened to select microorganisms with the capability to oxidize organic sulfides into the corresponding sulfoxides with differential enantioselectivities. several bacterial strains that preferentially produced the s-configured sulfoxide enantiomer were isolated. surprisingly, one bacterial strain, genotypically and phenotypically characterized as pseudomonas frederiksbergensis, selectively gave the r enantiomer. the finding that two apparently identical organisms displayed opp ... | 2005 | 15812060 |
| draft genome sequence of pseudomonas frederiksbergensis si8, a psychrotrophic aromatic-degrading bacterium. | pseudomonas frederiksbergensis strain si8 is a psychrotrophic bacterium capable of efficient aerobic degradation of aromatic hydrocarbons. the draft genome of p. frederiksbergensis si8 is 6.57 mb in size, with 5,904 coding sequences and 60.5% g+c content. the isopropylbenzene (cumene) degradation pathway is predicted to be present in p. frederiksbergensis si8. | 2015 | 26184950 |
| effects of soluble phosphate on phosphate-solubilizing characteristics and expression of gcd gene in pseudomonas frederiksbergensis jw-sd2. | phosphate-solubilizing bacteria have the ability of solubilizing mineral phosphate in soil and promoting growth of plants, but the activity of phosphate solubilization is influenced by exogenous soluble phosphate. in the present study, the effects of soluble phosphate on the activity of phosphate solubilization, acidification of media, growth, and organic acid secretion of phosphate-solubilizing bacterium pseudomonas frederiksbergensis jw-sd2 were investigated under six levels of soluble phospha ... | 2016 | 26573634 |
| effect of wetland plants and bacterial inoculation on dissipation of phenanthrene. | this study attempts to evaluate the capacity of wetland plants' ability to dissipate phenanthrene (phe) under waterlogged conditions. the results indicate that typha latifolia and vertiveria zizanioides may efficiently degrade phe, and were much more effective when under combined plant cultivation with the inoculation of pseudomonas frederiksbergensis (atcc baa-257). concentrations of phe declined from 200 mg kg(-1) to less than 52 mg kg(-1) in all treatments with plant cultivation. at the end o ... | 2017 | 28323450 |
| characterization of quorum sensing and quorum quenching soil bacteria isolated from malaysian tropical montane forest. | we report the production and degradation of quorum sensing n-acyl-homoserine lactones by bacteria isolated from malaysian montane forest soil. phylogenetic analysis indicated that these isolates clustered closely to the genera of arthrobacter, bacillus and pseudomonas. quorum quenching activity was detected in six isolates of these three genera by using a series of bioassays and rapid resolution liquid chromatography analysis. biosensor screening and high resolution liquid chromatography-mass sp ... | 2012 | 22666062 |
| expression of an exogenous 1-aminocyclopropane-1-carboxylate deaminase gene in psychrotolerant bacteria modulates ethylene metabolism and cold induced genes in tomato under chilling stress. | the role of stress induced ethylene under low temperature stress has been controversial and hitherto remains unclear. in the present study, 1-aminocyclopropane-1-carboxylate deaminase (accd) gene, acds expressing mutant strains were generated from accd negative psychrotolerant bacterial strains flavobacterium sp. or306 and pseudomonas frederiksbergensis os211, isolated from agricultural soil during late winter. after transformation with plasmid prkacc which contained the acds gene, both the stra ... | 2015 | 25686701 |
| beneficial soil bacterium pseudomonas frederiksbergensis os261 augments salt tolerance and promotes red pepper plant growth. | soil salinity, being a part of natural ecosystems, is an increasing problem in agricultural soils throughout the world. pseudomonas frederiksbergensis os261 has already been proved to be an effective bio-inoculant for enhancing cold stress tolerance in plants, however, its effect on salt stress tolerance is unknown. the main aim of the present study was to elucidate p. frederiksbergensis os261 mediated salt stress tolerance in red pepper. the plants were exposed to a salt stress using nacl at th ... | 2017 | 28523010 |
| pseudomonas frederiksbergensis sp. nov., isolated from soil at a coal gasification site. | phenotypic and genotypic characterization indicated that a group of 29 closely related phenanthrene-degrading bacteria from a coal gasification site in frederiksberg, copenhagen, denmark, belonged to the genus pseudomonas. the strains were isolated at two sampling occasions 2 years apart. the isolates were phenotypically different from any known species of the genus pseudomonas and were therefore subject to further identification. colonies were smooth and pale yellowish and did not produce pigme ... | 2000 | 11155968 |
| mercury decreases culturability of pseudomonas frederiksbergensis jaj 28 in soil microcosms. | mercury is a biologically potent heavy metal, which has been found to change the diversity of culturable bacteria. therefore, we investigated whether hg kills bacteria in soil or reduces culturability. soil microcosms were inoculated with pseudomonas frederiksbergensis jaj 28 and were sampled regularly during 28 days. the total number of acridine orange-stained cells was relatively constant, and hg reduced the number on only one sampling day. however, the fraction of culturable cells on 1/10 try ... | 2003 | 14506859 |