Abstract:
:Time series incubations were conducted to provide estimates for the size selectivities and rates of protistan grazing that may be occurring in a sandy, contaminated aquifer. The experiments involved four size classes of fluorescently labeled groundwater bacteria (FLB) and 2- to 3-microns-long nanoflagellates, primarily Spumella guttula (Ehrenberg) Kent, that were isolated from contaminated aquifer sediments (Cape Cod, Mass.). The greatest uptake and clearance rates (0.77 bacteria.flagellate-1.h-1 and 1.4 nl.flagellate-1.h-1, respectively) were observed for 0.8- to 1.5-microns-long FLB (0.21-microns3 average cell volume), which represent the fastest growing bacteria within the pore fluids of the contaminated aquifer sediments. The 19:1 to 67:1 volume ratios of nanoflagellate predators to preferred bacterial prey were in the lower end of the range commonly reported for other aquatic habitats. The grazing data suggest that the aquifer nanoflagellates can consume as much as 12 to 74% of the unattached bacterial community in 1 day and are likely to have a substantive effect upon bacterial degradation of organic groundwater contaminants.
journal_name
Appl Environ Microbioljournal_title
Applied and environmental microbiologyauthors
Kinner NE,Harvey RW,Blakeslee K,Novarino G,Meeker LDdoi
10.1128/AEM.64.2.618-625.1998subject
Has Abstractpub_date
1998-02-01 00:00:00pages
618-25issue
2eissn
0099-2240issn
1098-5336journal_volume
64pub_type
杂志文章abstract::A metagenomic library of a petroleum-contaminated soil was constructed in a fosmid vector that allowed heterologous expression of metagenomic DNA. The library, consisting of 6.5 Gb of metagenomic DNA, was screened for extradiol dioxygenase (Edo) activity using catechol and 2,3-dihydroxybiphenyl as the substrates. Fift...
journal_title:Applied and environmental microbiology
pub_type: 杂志文章
doi:10.1128/AEM.03811-15
更新日期:2016-04-04 00:00:00
abstract::Chlamydiae are important pathogens of humans and animals but diagnosis of chlamydial infections is still hampered by inadequate detection methods. Fluorescence in situ hybridization (FISH) using rRNA-targeted oligonucleotide probes is widely used for the investigation of uncultured bacteria in complex microbial commun...
journal_title:Applied and environmental microbiology
pub_type: 杂志文章
doi:10.1128/aem.68.8.4081-4089.2002
更新日期:2002-08-01 00:00:00
abstract::The arginine deiminase system in a variety of streptococci and in Pseudomonas aeruginosa was found to be unusually acid tolerant in that arginolysis occurred at pH values well below the minima for growth and glycolysis. The acid tolerance of the system allowed bacteria to survive potentially lethal acidification throu...
journal_title:Applied and environmental microbiology
pub_type: 杂志文章
doi:10.1128/AEM.53.1.198-200.1987
更新日期:1987-01-01 00:00:00
abstract::Dual-trap laser tweezers Raman spectroscopy (LTRS) and elastic light scattering (ELS) were used to investigate dynamic processes during high-temperature treatment of individual spores of Bacillus cereus, Bacillus megaterium, and Bacillus subtilis in water. Major conclusions from these studies included the following. (...
journal_title:Applied and environmental microbiology
pub_type: 杂志文章
doi:10.1128/AEM.02851-09
更新日期:2010-03-01 00:00:00
abstract::A 1.5-kb region immediately downstream of the styABCD operon involved in styrene degradation in Pseudomonas putida CA-3 has been cloned. Sequence analysis revealed a 1,296-bp open reading frame, designated styE, and BLAST P database comparisons of the deduced StyE amino acid sequence revealed 33 to 98% identity with s...
journal_title:Applied and environmental microbiology
pub_type: 杂志文章
doi:10.1128/AEM.72.2.1302-1309.2006
更新日期:2006-02-01 00:00:00
abstract::A strain of the aerobic anoxygenic photosynthetic bacteria was isolated from a deep-ocean hydrothermal vent plume environment. The in vivo absorption spectra of cells indicate the presence of bacteriochlorophyll a incorporated into light-harvesting complex I and a reaction center. The general morphological and physiol...
journal_title:Applied and environmental microbiology
pub_type: 杂志文章
doi:10.1128/AEM.64.1.337-341.1998
更新日期:1998-01-01 00:00:00
abstract::After propagation of Rhizopus javanicus in defined media containing glucose, urea, and mineral salts in deionized distilled water, the ability of the nonliving biomass to sequester cupric ion was assayed. Growth, uptake capacity (saturation uptake at >1 mM Cu concentration in solution), and biosorptive yield (biomass ...
journal_title:Applied and environmental microbiology
pub_type: 杂志文章
doi:10.1128/AEM.48.1.137-141.1984
更新日期:1984-07-01 00:00:00
abstract::The bacterial rhizosphere communities of three host plants of the pathogenic fungus Verticillium dahliae, field-grown strawberry (Fragaria ananassa Duch.), oilseed rape (Brassica napus L.), and potato (Solanum tuberosum L.), were analyzed. We aimed to determine the degree to which the rhizosphere effect is plant depen...
journal_title:Applied and environmental microbiology
pub_type: 杂志文章
doi:10.1128/aem.67.10.4742-4751.2001
更新日期:2001-10-01 00:00:00
abstract::The nonlinear thermal inactivation of Aspergillus niger spores in phosphate-citrate buffer was studied. The thermal inactivation pattern of the spore consisted of a shoulder, an accelerated decline, and a tail at various constant temperatures around 60 degrees C. The pattern fitted a thermotolerant subpopulation model...
journal_title:Applied and environmental microbiology
pub_type: 杂志文章
doi:10.1128/AEM.62.10.3745-3749.1996
更新日期:1996-10-01 00:00:00
abstract::AbiV is an abortive infection protein that inhibits the lytic cycle of several virulent phages infecting Lactococcus lactis, while a mutation in the phage gene sav confers insensitivity to AbiV. In this study, we have further characterized the effects of the bacterial AbiV and its interaction with the phage p2 protein...
journal_title:Applied and environmental microbiology
pub_type: 杂志文章
doi:10.1128/AEM.00093-10
更新日期:2010-11-01 00:00:00
abstract::The influence of substrate and enzyme concentrations on the rate of saccharification of two defined insoluble cellulose substrates, Avicel (FMC Corp., Philadelphia, Pa.) and Solka-Floc (James River Co., Berlin, N.H.), by the cellulase enzyme system of Trichoderma viride was evaluated. In the assays, enzyme concentrati...
journal_title:Applied and environmental microbiology
pub_type: 杂志文章
doi:10.1128/AEM.56.8.2311-2318.1990
更新日期:1990-08-01 00:00:00
abstract::We found that the human intestinal isolate Bifidobacterium bifidum MIMBb75 strongly adhered to Caco-2 cells. Proteinase K and lithium chloride treatments showed that proteins play a key role in MIMBb75 adhesion to Caco-2 cells. By studying the cell wall-associated proteins, we identified a surface protein, which we la...
journal_title:Applied and environmental microbiology
pub_type: 杂志文章
doi:10.1128/AEM.00124-08
更新日期:2008-08-01 00:00:00
abstract::Hydrolytic extracellular enzymes degrading host tissues potentially play a role in bacterial pathogenesis. Flavobacterium psychrophilum is an important bacterial pathogen of salmonid fish reared in freshwater throughout the world. Diversity among isolates has been described at the phenotypic, serological, and genomic ...
journal_title:Applied and environmental microbiology
pub_type: 杂志文章
doi:10.1128/AEM.02535-18
更新日期:2019-03-06 00:00:00
abstract::Rhodococcus rhodochrous NCIMB 13259 grows on styrene, toluene, ethylbenzene, and benzene as sole carbon sources. Simultaneous induction tests with cells grown on styrene or toluene showed high rates of oxygen consumption with toluene cis-glycol and 3-methylcatechol, suggesting the involvement of a cis-glycol pathway. ...
journal_title:Applied and environmental microbiology
pub_type: 杂志文章
doi:10.1128/AEM.60.4.1137-1145.1994
更新日期:1994-04-01 00:00:00
abstract::Inactivation of infectious viruses during drinking water treatment is usually achieved with free chlorine. Many drinking water utilities in the United States now use monochloramine as a secondary disinfectant to minimize disinfectant by-product formation and biofilm growth. The inactivation of human adenoviruses 2, 40...
journal_title:Applied and environmental microbiology
pub_type: 杂志文章
doi:10.1128/AEM.01342-09
更新日期:2010-02-01 00:00:00
abstract::Discrimination of strains within the species Saccharomyces cerevisiae was demonstrated by the use of four different techniques to type 15 strains isolated from spoiled wine and beer. Random amplified polymorphic DNA with specific oligonucleotides and PCR fingerprinting with the microsatellite oligonucleotide primers (...
journal_title:Applied and environmental microbiology
pub_type: 杂志文章
doi:10.1128/AEM.62.1.41-46.1996
更新日期:1996-01-01 00:00:00
abstract::Citrus canker, caused by Xanthomonas citri pv. citri, is a serious disease of citrus plants worldwide. Earlier phylogenetic studies using housekeeping genes revealed that X. citri pv. citri is related to many other pathovars, which can be collectively referred as Xanthomonas citri pathovars (XCPs). From the present st...
journal_title:Applied and environmental microbiology
pub_type: 杂志文章
doi:10.1128/AEM.02993-16
更新日期:2017-04-17 00:00:00
abstract::Campylobacter jejuni is a pathogenic, microaerophilic, gram-negative, mesophilic bacterium. Three strains isolated from humans with enteric campylobacteriosis were able to survive at high population levels (10(7) cells ml-1) as viable-but-nonculturable (VBNC) forms in microcosm water. The VBNC forms of the three C. je...
journal_title:Applied and environmental microbiology
pub_type: 杂志文章
doi:10.1128/AEM.65.3.1110-1116.1999
更新日期:1999-03-01 00:00:00
abstract::Gibberella moniliformis (Fusarium verticillioides) is primarily a pathogen of maize, but it can also cause disease in other crop species. This pathogenicity, as well as the contamination of food- and feedstuffs with the fumonisin mycotoxins, results in economically significant losses to both farmers and food processor...
journal_title:Applied and environmental microbiology
pub_type: 杂志文章
doi:10.1128/aem.68.4.1972-1979.2002
更新日期:2002-04-01 00:00:00
abstract::Diacetyl is a by-product of pyruvate metabolism in Lactococcus lactis, where pyruvate is first converted to alpha-acetolactate, which is slowly decarboxylated to diacetyl in the presence of oxygen. L. lactis usually converts alpha-acetolactate to acetoin enzymatically, by alpha-acetolactate decarboxylase encoded by th...
journal_title:Applied and environmental microbiology
pub_type: 杂志文章
doi:10.1128/AEM.62.7.2636-2640.1996
更新日期:1996-07-01 00:00:00
abstract::CRISPR-based systems are emerging as the premier method to manipulate many cellular processes. In this study, a simple and efficient CRISPR interference (CRISPRi) system for targeted gene repression in archaea was developed. The Methanosarcina acetivorans CRISPR-Cas9 system was repurposed by replacing Cas9 with the ca...
journal_title:Applied and environmental microbiology
pub_type: 杂志文章
doi:10.1128/AEM.01402-20
更新日期:2020-10-15 00:00:00
abstract::Diel nitrogen fixation studies were conducted with assemblages of cyanobacteria sampled from surface blooms on Sanctuary Lake, Pa. The studies were conducted between July and September of 1982 to 1985 by using the acetylene reduction technique. Assemblages with the lowest cell concentrations (0.9 x 10 to 1.0 x 10 cell...
journal_title:Applied and environmental microbiology
pub_type: 杂志文章
doi:10.1128/AEM.56.2.466-471.1990
更新日期:1990-02-01 00:00:00
abstract::An indirect fluorescent antibody-membrane filter staining technique, which permitted the autecological study of Methylomonas methanica and Methylosinus trichosporium, was developed. This technique was used to assay the numbers of these two organisms in Cleveland Harbor. The concentrations of M. methanica and M. tricho...
journal_title:Applied and environmental microbiology
pub_type: 杂志文章
doi:10.1128/AEM.35.2.422-430.1978
更新日期:1978-02-01 00:00:00
abstract::The biodegradation of tert-butylphenyl diphenyl phosphate (BPDP) was examined in microcosms containing sediment and water from five different ecosystems as part of our studies to elucidate the environmental fate of phosphate ester flame retardants. Biodegradation of [14C]BPDP was monitored in the environmental microco...
journal_title:Applied and environmental microbiology
pub_type: 杂志文章
doi:10.1128/AEM.51.2.316-322.1986
更新日期:1986-02-01 00:00:00
abstract::Predicting the presence of enteric viruses in surface waters is a complex modeling problem. Multiple water quality parameters that indicate the presence of human fecal material, the load of fecal material, and the amount of time fecal material has been in the environment are needed. This paper presents the results of ...
journal_title:Applied and environmental microbiology
pub_type: 杂志文章
doi:10.1128/AEM.02780-06
更新日期:2007-06-01 00:00:00
abstract::The effects of sublethal concentrations of a variety of chemicals on the susceptibility of rainbow trout (Oncorhynchus mykiss) juveniles to Saprolegnia parasitica infection was examined. Sublethal concentrations of un-ionized ammonia (0.05 mg/liter) and nitrite (0.12 mg/liter) increased fish susceptibility after 10 da...
journal_title:Applied and environmental microbiology
pub_type: 杂志文章
doi:10.1128/AEM.57.6.1813-1816.1991
更新日期:1991-06-01 00:00:00
abstract::Knowledge of host specificity, combined with genomic sequencing of Giardia and Cryptosporidium spp., has demonstrated a microbial source tracking (MST) utility for these common waterborne microbes. To explore the source attribution potential of these pathogens, water samples were collected in a mixed rural-urban water...
journal_title:Applied and environmental microbiology
pub_type: 杂志文章
doi:10.1128/AEM.02037-13
更新日期:2014-04-01 00:00:00
abstract::L-glutamate overproduction in Corynebacterium glutamicum, a biotin auxotroph, is induced by biotin limitation or by treatment with certain fatty acid ester surfactants or with penicillin. We have analyzed the relationship between the inductions, 2-oxoglutarate dehydrogenase complex (ODHC) activity, and L-glutamate pro...
journal_title:Applied and environmental microbiology
pub_type: 杂志文章
doi:10.1128/AEM.01867-06
更新日期:2007-02-01 00:00:00
abstract::While screening aerobic, heterotrophic marine bacteria for production of volatile organic compounds, we found that a group of isolates produced substantial amounts of acetone. Acetone production was confirmed by gas chromatography, gas chromatography-mass spectrometry, and high-performance liquid chromatography. The m...
journal_title:Applied and environmental microbiology
pub_type: 杂志文章
doi:10.1128/AEM.61.1.44-47.1995
更新日期:1995-01-01 00:00:00
abstract::Evaluation of the fate and transport of biological warfare (BW) agents in landfills requires the development of specific and sensitive detection assays. The objective of the current study was to develop and validate SYBR green quantitative real-time PCR (Q-PCR) assays for the specific detection and quantification of s...
journal_title:Applied and environmental microbiology
pub_type: 杂志文章
doi:10.1128/AEM.00779-07
更新日期:2007-10-01 00:00:00