Applied and Environmental Microbiology
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Production of N2through Anaerobic Ammonium Oxidation Coupled to Nitrate Reduction in Marine Sediments
Applied and Environmental Microbiology - Tập 68 Số 3 - Trang 1312-1318 - 2002
ABSTRACTIn the global nitrogen cycle, bacterial denitrification is recognized as
the only quantitatively important process that converts fixed nitrogen to
atmospheric nitrogen gas, N2, thereby influencing many aspects of ecosystem
function and global biogeochemistry. However, we have found that a process novel
to the marine nitrogen cycle, anaerobic oxidation of ammonium coupled to nitrate
reducti...
Isolation of Bacteriophages Specific to a Fish Pathogen, Pseudomonas plecoglossicida , as a Candidate for Disease Control
Applied and Environmental Microbiology - Tập 66 Số 4 - Trang 1416-1422 - 2000
ABSTRACT Two types of bacteriophage specific to Pseudomonas plecoglossicida ,
the causative agent of bacterial hemorrhagic ascites disease in cultured ayu
fish ( Plecoglossus altivelis ), were isolated from diseased ayu and the rearing
pond water. One type of phage, which formed small plaques, was tentatively
classified as a member of the family Myoviridae , and the other type, which
formed large ...
Biocontrol of Listeria monocytogenes on Fresh-Cut Produce by Treatment with Lytic Bacteriophages and a Bacteriocin
Applied and Environmental Microbiology - Tập 69 Số 8 - Trang 4519-4526 - 2003
ABSTRACT The fresh-cut produce industry has been the fastest-growing portion of
the food retail market during the past 10 years, providing consumers with
convenient and nutritious food. However, fresh-cut fruits and vegetables raise
food safety concerns, because exposed tissue may be colonized more easily by
pathogenic bacteria than intact produce. This is due to the higher availability
of nutrien...
Virulent Bacteriophage for Efficient Biocontrol of Listeria monocytogenes in Ready-To-Eat Foods
Applied and Environmental Microbiology - Tập 75 Số 1 - Trang 93-100 - 2009
ABSTRACT Food-borne Listeria monocytogenes is a serious threat to human health,
and new strategies to combat this opportunistic pathogen in foods are needed.
Bacteriophages are natural enemies of bacteria and are suitable candidates for
the environmentally friendly biocontrol of these pathogens. In a comprehensive
set of experiments, we have evaluated the virulent, broad-host-range phages A511
and...
Risk of Listeria monocytogenes Contamination of Raw Ready-To-Eat Seafood Products Available at Retail Outlets in Japan
Applied and Environmental Microbiology - Tập 76 Số 10 - Trang 3383-3386 - 2010
ABSTRACT Examination of Listeria monocytogenes prevalence among ready-to-eat
foods in Japan revealed frequent (5.7 to 12.1%) contamination of minced tuna and
fish roe products, and the isolates had the same virulence levels as clinical
isolates in terms of invasion efficiency and infectivity in cell cultures and a
murine infection model, respectively. Premature stop codons in inlA were
infrequent ...
Effects of Nickel and Cobalt on Kinetics of Methanol Conversion by Methanogenic Sludge as Assessed by On-Line CH 4 Monitoring
Applied and Environmental Microbiology - Tập 65 Số 4 - Trang 1789-1793 - 1999
ABSTRACT When metals were added in a pulse mode to methylotrophic-methanogenic
biomass, three methane production rate phases were recognized. Increased
concentrations of Ni and Co accelerated the initial exponential and final
arithmetic increases in the methane production rate and reduced the temporary
decrease in the rate. When Ni and Co were added continuously, the temporary
decrease phase was e...
A Rhamnolipid Biosurfactant Reduces Cadmium Toxicity during Naphthalene Biodegradation
Applied and Environmental Microbiology - Tập 66 Số 10 - Trang 4585-4588 - 2000
ABSTRACT A model cocontaminated system was developed to determine whether a
metal-complexing biosurfactant, rhamnolipid, could reduce metal toxicity to
allow enhanced organic biodegradation by a Burkholderia sp. isolated from soil.
Rhamnolipid eliminated cadmium toxicity when added at a 10-fold greater
concentration than cadmium (890 μM), reduced toxicity when added at an equimolar
concentration (...
Effect of added heavy metal ions on biotransformation and biodegradation of 2-chlorophenol and 3-chlorobenzoate in anaerobic bacterial consortia
Applied and Environmental Microbiology - Tập 62 Số 7 - Trang 2317-2323 - 1996
The effect of added Cd(II), Cu(II), Cr(VI), or Hg(II) at 0.01 to 100 ppm on
metabolism in anaerobic bacterial consortia which degrade 2-chlorophenol (2CP),
3-chlorobenzoate (3CB), phenol, and benzoate was examined. Three effects were
observed, including extended acclimation periods (0.1 to 2.0 ppm), reduced
dechlorination or biodegradation rates (0.1 to 2.0 ppm), and failure to
dechlorinate or bio...
Biodegradation of Methyltert-Butyl Ether by a Pure Bacterial Culture
Applied and Environmental Microbiology - Tập 67 Số 12 - Trang 5601-5607 - 2001
ABSTRACTBiodegradation of methyltert-butyl ether (MTBE) by the
hydrogen-oxidizing bacteriumHydrogenophaga flavaENV735 was evaluated. ENV735
grew slowly on MTBE ortert-butyl alcohol (TBA) as sole sources of carbon and
energy, but growth on these substrates was greatly enhanced by the addition of a
small amount of yeast extract. The addition of H2did not enhance or diminish
MTBE degradation by the s...
Effects of Metals on Methanogenesis, Sulfate Reduction, Carbon Dioxide Evolution, and Microbial Biomass in Anoxic Salt Marsh Sediments
Applied and Environmental Microbiology - Tập 45 Số 5 - Trang 1586-1591 - 1983
The effects of several metals on microbial methane, carbon dioxide, and sulfide
production and microbial ATP were examined in sediments from Spartina
alterniflora communities. Anaerobically homogenized sediments were amended with
1,000 ppm (ratio of weight of metal to dry weight of sediment) of various
metals. Time courses in controls were similar for CH 4 , H 2 S, and CO 2 , with
short initial la...
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