| shewanella halifaxensis sp. nov., a novel obligately respiratory and denitrifying psychrophile. | indigenous bacteria found in the sediment of the emerald basin (depth of 215 m, atlantic ocean) located offshore of halifax harbour (nova scotia, canada) were previously found to be able to degrade the explosive compound hexahydro-1,3,5-trinitro-1,3,5-triazine (rdx). in the present study, a novel obligately respiratory, denitrifying and rdx-mineralizing bacterium, designated strain haw-eb4(t), was isolated from the marine sediment. this bacterium utilized peptone, yeast extract, casamino acids, ... | 2006 | 16403888 |
| regulation of hexahydro-1,3,5-trinitro-1,3,5-triazine (rdx) metabolism in shewanella halifaxensis haw-eb4 by terminal electron acceptor and involvement of c-type cytochrome. | shewanella halifaxensis haw-eb4 was previously isolated for its potential to mineralize hexahydro-1,3,5-trinitro-1,3,5-triazine (rdx) from a uxo (unexploded ordnance)-contaminated marine sediment site near halifax harbor. the present study was undertaken to determine the effect of terminal electron acceptors (tea) on the growth of strain haw-eb4 and on the enzymic processes involved in rdx metabolism. the results showed that aerobic conditions were optimal for bacterial growth, but that anaerobi ... | 2008 | 18375796 |
| characterization of a cryptic plasmid psfkw33 from shewanella sp. 33b. | a cryptic plasmid psfkw33 from psychrotrophic bacterium shewanella sp. 33b, an isolate from the gulf of gdansk (the baltic sea), was sequenced and characterized. it is an 8021bp circular molecule with 38% gc content, which shows a distinctive nucleotide sequence without homology to other known plasmids. the nucleotide sequence analysis predicts eight open reading frames. the deduced amino acid sequence of orf-1 shared significant similarity with the phage integrase protein from pseudomonas putid ... | 2009 | 19336243 |
| shewanella spp. genomic evolution for a cold marine lifestyle and in-situ explosive biodegradation. | shewanella halifaxensis and shewanella sediminis were among a few aquatic gamma-proteobacteria that were psychrophiles and the first anaerobic bacteria that degraded hexahydro-1,3,5-trinitro-1,3,5-triazine (rdx). although many mesophilic or psychrophilic strains of shewanella and gamma-proteobacteria were sequenced for their genomes, the genomic evolution pathways for temperature adaptation were poorly understood. on the other hand, the genes responsible for anaerobic rdx mineralization pathways ... | 2010 | 20174598 |
| identification, library synthesis and anti-vibriosis activity of 2-benzyl-4-chlorophenol from cultures of the marine bacterium shewanella halifaxensis. | summer gut syndrome (sgs) is caused by various vibrio bacterial species and can have negative effects on aquaculture farms worldwide. in new zealand, sgs is caused by vibrio harveyii infecting king salmon (oncorhynchus tshawytscha). to find leads for the prevention of sgs, we screened the inhibitory effects of 16 strains of shewanella upon v. harveyii growth in competitive solid phase cultures. the detailed investigation of shewanella halifaxensis irl548 revealed 2-benzyl-4-chlorophenol (1), a k ... | 2016 | 27185331 |