analysis of bacterial degradation pathways for long-chain alkylphenols involving phenol hydroxylase, alkylphenol monooxygenase and catechol dioxygenase genes.eighteen 4-t-octylphenol-degrading bacteria were isolated and screened for the presence of degradative genes by polymerase chain reaction method using four designed primer sets. the primer sets were designed to amplify specific fragments from multicomponent phenol hydroxylase, single component monooxygenase, catechol 1,2-dioxygenase and catechol 2,3-dioxygenase genes. seventeen of the 18 isolates exhibited the presence of a 232 bp amplicon that shared 61-92% identity to known multicomponent phen ...201021227686
outbreak of pseudomonas fluorescens bacteremia among oncology patients.from 7 to 24 march 1997, four patients developed pseudomonas fluorescens bacteremia at the hospital; one on the oncology ward and the other three in the chemotherapy room. these patients all had underlying malignancies and had the port-a-cath (smiths industries medical systems, deltec, inc., st. paul, minn.) implants. three patients had primary bacteremia, and one had port-a-cath-related infection. none of these patients had received a blood transfusion before the episodes of bacteremia. all pat ...19989738043
in vitro and in situ survivals of bacterial populations added to fresh water environments.the fate of aeromonas hydrophila, alcaligenes denitrificans, vibrio cholerae non-01, pseudomonas putida and four different isolates of escherichia coli in fresh river water were assessed by using different microcosms (i.e., membrane diffusion chamber and erlenmeyer flask). when water samples were incubated at 16 +/- 1 degrees c, the differences in extent of survival among test bacteria were in general not significant. if the incubation temperature was raised to 29 +/- 1 degrees c, in the in situ ...19937982366
evidence of induced systemic resistance against botrytis elliptica in lily.lily leaf blight, caused by botrytis elliptica, is an important fungal disease in taiwan. in order to identify an effective, nonfungicide method to decrease disease incidence in lilium formosanum, the efficacy of rhizobacteria eliciting induced systemic resistance (isr) was examined in this study. over 300 rhizobacteria were isolated from the rhizosphere of l. formosanum healthy plants and 63 were identified by the analysis of fatty acid profiles. disease suppressive ability of 13 strains was de ...200818943260
biodegradation of tetrachlorobisphenol--a in river sediment and the microbial community changes.this study investigated the aerobic degradation of tetrachlorobisphenol-a (tcbpa) in sediment samples collected at three sites along erren river in southern taiwan. tcbpa biodegradation rate constants (k(1)) and half-lives (t(1/2)) ranged from 0.03 to 0.06 day(-1) and 11.6 to 23.1 days, respectively. the biodegradation of tcbpa was enhanced by the addition of cellulose, yeast extract, sodium chloride, brij 30, brij 35, surfactin, and rhamnolipid. of the micro-organism strains isolated from the s ...201020512725
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