Abstract:
:Two duck farms in Hong Kong were examined monthly for 1 year for the occurrence and persistence of influenza viruses within the duck communities. The predominant virus in one community was H3N2, a virus antigenically related to the pandemic Hong Kong strain. This virus was isolated monthly throughout the year from feces or pond water or both, indicating a cycle of waterborne transmission. Viruses of the same antigenic combination were isolated 1 and 2 years after the last sampling occasion, implying persistence in the community. Infection was asymptomatic. Maintenance of virus appeared to be dependent upon the continual introduction of ducklings susceptible to infection onto virus-contaminated water; the feces of ducks 70 to 80 days old were generally free of detectable virus despite the exposure of the ducks to virus in pond water. In the second community, in which ducklings were not introduced after the initial sampling, the prevailing viruses, H7N1 and H7N2, also present asymptomatically, ceased to be detected once the ducks were 70 to 80 days old. The normal practice of raising ducks of different ages on the same farm, wherein the water supplies are shared, as typified by the first community, appears to be instrumental in maintaining a large reservoir of influenza viruses in the duck population of southern China.
journal_name
Appl Environ Microbioljournal_title
Applied and environmental microbiologyauthors
Markwell DD,Shortridge KFdoi
10.1128/AEM.43.1.110-115.1982subject
Has Abstractpub_date
1982-01-01 00:00:00pages
110-5issue
1eissn
0099-2240issn
1098-5336journal_volume
43pub_type
杂志文章abstract::SslI, a type II restriction endonuclease, was purified from Streptococcus salivarius subsp. thermophilus strain BSN 45. SslI is an isoschizomer of BstNI. SslI activity was maximum at pH 8.8, 0 to 50 mM NaCl, 2 to 8 mM Mg2+, and 42 degrees C. Activity against phage DNA in vitro was demonstrated. ...
journal_title:Applied and environmental microbiology
pub_type: 杂志文章
doi:10.1128/AEM.57.12.3677-3678.1991
更新日期:1991-12-01 00:00:00
abstract::A molecular analysis of betaproteobacterial ammonia oxidizers and a N(2)O isotopomer analysis were conducted to study the sources of N(2)O emissions during the cow manure composting process. Much NO(2)(-)-N and NO(3)(-)-N and the Nitrosomonas europaea-like amoA gene were detected at the surface, especially at the top ...
journal_title:Applied and environmental microbiology
pub_type: 杂志文章
doi:10.1128/AEM.01394-09
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pub_type: 杂志文章
doi:10.1128/AEM.02103-08
更新日期:2009-04-01 00:00:00
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journal_title:Applied and environmental microbiology
pub_type: 杂志文章
doi:10.1128/AEM.02783-09
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journal_title:Applied and environmental microbiology
pub_type: 杂志文章
doi:10.1128/AEM.48.4.857-858.1984
更新日期:1984-10-01 00:00:00
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journal_title:Applied and environmental microbiology
pub_type: 杂志文章
doi:10.1128/AEM.70.9.5274-5282.2004
更新日期:2004-09-01 00:00:00
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journal_title:Applied and environmental microbiology
pub_type: 杂志文章
doi:10.1128/AEM.48.1.41-42.1984
更新日期:1984-07-01 00:00:00
abstract::Ammonia-oxidizing bacteria (AOB) are thought to contribute significantly to N2O production and methane oxidation in soils. Most of our knowledge derives from experiments with Nitrosomonas europaea, which appears to be of minor importance in most soils compared to Nitrosospira spp. We have conducted a comparative study...
journal_title:Applied and environmental microbiology
pub_type: 杂志文章
doi:10.1128/AEM.65.6.2679-2684.1999
更新日期:1999-06-01 00:00:00
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journal_title:Applied and environmental microbiology
pub_type: 杂志文章
doi:10.1128/AEM.45.6.1899-1904.1983
更新日期:1983-06-01 00:00:00
abstract::Biofilms are composed of bacterial cells encased in a self-synthesized, extracellular polymeric matrix. Poly-beta(1,6)-N-acetyl-d-glucosamine (PNAG) is a major biofilm matrix component in phylogenetically diverse bacteria. In this study we investigated the physical and chemical properties of the PNAG matrix in biofilm...
journal_title:Applied and environmental microbiology
pub_type: 杂志文章
doi:10.1128/AEM.01900-08
更新日期:2009-03-01 00:00:00
abstract::Phylogenetic relationships, diversity, and in situ identification of spirochetes in the gut of the termite Neotermes koshunensis were examined without cultivation, with an emphasis on ectosymbionts attached to flagellated protists. Spirochetes in the gut microbial community investigated so far are related to the genus...
journal_title:Applied and environmental microbiology
pub_type: 杂志文章
doi:10.1128/aem.69.1.625-633.2003
更新日期:2003-01-01 00:00:00
abstract::Vibrio vulnificus is a human pathogen associated with consumption of raw oysters. During the colder months the organism apparently enters a viable but nonculturable state and thus cannot be cultured by ordinary bacteriological methods. For this reason, another means of detecting this bacterium is necessary. In the pre...
journal_title:Applied and environmental microbiology
pub_type: 杂志文章
doi:10.1128/AEM.57.9.2651-2655.1991
更新日期:1991-09-01 00:00:00
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journal_title:Applied and environmental microbiology
pub_type: 杂志文章
doi:10.1128/AEM.00949-12
更新日期:2012-08-01 00:00:00
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journal_title:Applied and environmental microbiology
pub_type: 杂志文章
doi:10.1128/AEM.71.11.7483-7492.2005
更新日期:2005-11-01 00:00:00
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journal_title:Applied and environmental microbiology
pub_type: 杂志文章
doi:10.1128/AEM.71.4.1843-1849.2005
更新日期:2005-04-01 00:00:00
abstract::Low-temperature ecosystems represent the largest biosphere on Earth, and yet our understanding of the roles of bacteriophages in these systems is limited. Here, the influence of the cold-active filamentous phage SW1 on the phenotype and gene transcription of its host, Shewanella piezotolerans WP3 (WP3), was investigat...
journal_title:Applied and environmental microbiology
pub_type: 杂志文章
doi:10.1128/AEM.01675-13
更新日期:2013-11-01 00:00:00
abstract::The diffusive penetration of fluorescently tagged macromolecular solutes into model oral biofilms was visualized by time-lapse microscopy. All of the solutes tested, including dextrans, proteases, green fluorescent protein, and immunoglobulin G, accessed the interior of cell clusters 100 to 200 microm in diameter with...
journal_title:Applied and environmental microbiology
pub_type: 杂志文章
doi:10.1128/AEM.02279-08
更新日期:2009-03-01 00:00:00
abstract::Lyophilization was used to concentrate bovine feces prior to DNA extraction and analysis using real-time PCR. Lyophilization significantly improved the sensitivity of detection compared to that in fresh feces and was associated with reliable quantification of both Escherichia coli O157:H7 and Campylobacter jejuni bact...
journal_title:Applied and environmental microbiology
pub_type: 杂志文章
doi:10.1128/AEM.01866-09
更新日期:2010-03-01 00:00:00
abstract::Anaerobic ammonium oxidation is a recent addition to the microbial nitrogen cycle, and its metabolic pathway, including the production and conversion of its intermediate hydrazine, is not well understood. Therefore, the effect of hydroxylamine addition on the hydrazine metabolism of anaerobic ammonium-oxidizing (anamm...
journal_title:Applied and environmental microbiology
pub_type: 杂志文章
doi:10.1128/AEM.00042-08
更新日期:2008-07-01 00:00:00
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journal_title:Applied and environmental microbiology
pub_type: 杂志文章
doi:10.1128/aem.70.3.1570-1575.2004
更新日期:2004-03-01 00:00:00
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journal_title:Applied and environmental microbiology
pub_type: 杂志文章
doi:10.1128/AEM.58.3.1067-1069.1992
更新日期:1992-03-01 00:00:00
abstract::Toluene dioxygenase from Pseudomonas putida F1 has been implicated as an enzyme capable of degrading trichloroethylene. This has now been confirmed with Escherichia coli JM109(pDTG601) that contains the structural genes (todC1C2BA) of toluene dioxygenase under the control of the tac promoter. The extent of trichloroet...
journal_title:Applied and environmental microbiology
pub_type: 杂志文章
doi:10.1128/AEM.55.12.3162-3166.1989
更新日期:1989-12-01 00:00:00
abstract::Recreational and potable water supplies polluted with human wastewater can pose a direct health risk to humans. Therefore, sensitive detection of human fecal pollution in environmental waters is very important to water quality authorities around the globe. Microbial source tracking (MST) utilizes human fecal markers (...
journal_title:Applied and environmental microbiology
pub_type: 杂志文章
doi:10.1128/AEM.03765-15
更新日期:2015-12-18 00:00:00
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journal_title:Applied and environmental microbiology
pub_type: 杂志文章
doi:10.1128/AEM.02770-06
更新日期:2007-06-01 00:00:00
abstract::The ability of various subsets of poultry intestinal microbiota to protect turkeys from colonization by Campylobacter jejuni was investigated. Community subsets were generated in vivo by inoculation of day-old poults with the cecal contents of a Campylobacter-free adult turkey, followed by treatment with one antimicro...
journal_title:Applied and environmental microbiology
pub_type: 杂志文章
doi:10.1128/AEM.00678-10
更新日期:2010-12-01 00:00:00
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journal_title:Applied and environmental microbiology
pub_type: 杂志文章
doi:10.1128/AEM.62.10.3840-3846.1996
更新日期:1996-10-01 00:00:00
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journal_title:Applied and environmental microbiology
pub_type: 杂志文章
doi:10.1128/AEM.56.4.1157-1159.1990
更新日期:1990-04-01 00:00:00
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journal_title:Applied and environmental microbiology
pub_type: 杂志文章
doi:10.1128/AEM.02897-09
更新日期:2010-04-01 00:00:00
abstract::High-cell-density fermentation for industrial production of chemicals can impose numerous stresses on cells due to high substrate, product, and by-product concentrations; high osmolarity; reactive oxygen species; and elevated temperatures. There is a need to develop platform strains of industrial microorganisms that a...
journal_title:Applied and environmental microbiology
pub_type: 杂志文章
doi:10.1128/AEM.01542-14
更新日期:2014-10-01 00:00:00
abstract::Reverse transcription-PCR analysis of drinking water in the homes of 56 children suffering from rotaviral gastroenteritis has shown the presence of the rotavirus genome in four samples. These strains were different from human rotaviruses detected in the children's feces, as determined by sequencing of the VP7-amplifie...
journal_title:Applied and environmental microbiology
pub_type: 杂志文章
doi:10.1128/aem.66.6.2690-2692.2000
更新日期:2000-06-01 00:00:00