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IpbR and XylS are related regulatory proteins (having 56% identity). IpbR responds to isopropylbenzene as well as to a variety of hydrophobic chemicals to activate expression of the isopropylbenzene catabolic pathway operon of pRE4 from ipbOP. XylS responds to substituted benzoic...

There is no abstract available for this product. If further information is requested, please refer to the bibliographic citation and contact the person listed under Contact field.

abstract for poster presentation

Since 1971, the CDC, EPA, and Council of State and Territorial Epidemiologists (CSTE) have maintained the collaborative national Waterborne Disease and Outbreak Surveillance System (WBDOSS) to document waterborne disease outbreaks (WBDOs) reported by local, state, and territorial...

ABSTRACT: Few studies have addressed the efficacy of composite sampling for measurement of indicator bacteria by QPCR. In this study, composite results were compared to single sample results for culture- and QPCR-based water quality monitoring. Composite results for both methods ...

Quantitative PCR (QPCR) methods for beach monitoring by estimating abundance of Enterococcus spp. in recreational waters use internal, positive controls which address only the amplification of target DNA. In this study two internal, positive controls were developed to control for...

Wetlands are transitional between terrestrial and aquatic environments. As such, they perform important ecological functions (e.g., nutrient cycling, flood abatement) providing a variety of ecosystem services on which humans rely. Wetlands are also one of the world&rsquo;s most e...

KEY LEARNING OBJECTIVES: - We observed an association between low levels of cyanobacteria in the drinking water source and emergency department visits for acute symptoms of gastrointestinal, respiratory, and dermal illnesses. - The health effects of cyanobacteria at low levels in...

Abstract for Annual Meeting of the American Society for Microbiology

abstract for presentation

Joseph B. James and Fred J. Genthner<br><br>United States Environmental Protection Agency, Gulf Breeze, FL <br><br>Background: Methods using rapid cycle, real-time, quantitative (QPCR) are being developed for detecting and quantifying Enterococcus spp. as well as other aquatic b...

Monitoring programs for recreational waters utilize indicator bacteria concentrations as predictors of sewage-exposure related illness risks. However, most illnesses contracted through exposure to recreational waters may be of viral etiology. Identifying the fecal sources (non-...

Abstract for poster presentation at the American Society for Microbiology General Meeting 2010.

Journal Article

Background Acquisition of pulmonary nontuberculous mycobacteria (NTM) is primarily associated with environmental exposures. Isolation prevalence increases with age. Rates of pulmonary isolation are increasing in the United States. Human NTM isolation and infection are associated ...

Interstitial water in the swash zone, that area of a beach where waves continuously wash up on the sand, is suspected of accumulating microbes. If pathogens are concentrated in the interstitial water or if they grow, they may pose a health risk, especially for children. This s...

The effects of large-scale poultry production operations on water quality and human health are largely unknown. Poultry litter is frequently applied as fertilizer to agricultural lands adjacent to large poultry farms. Run-off from the land introduces a variety of stressors into t...

There is no abstract available for this product. If further information is requested, please refer to the bibliographic citation and contact the person listed under Contact field.

Both the moderately halophilic bacterium, Halomonas elongata, and the extremely halophilic archaea, Halobacterium salinarum, can be found in hypersaline environments (e.g., salterns). On complex media, H. elongata grows over a salt range of 0.05-5.2 M, whereas, H. salinarum multi...

Interstitial water in the swash zone, that area of a beach where waves continuously wash up on the sand, is suspected of accumulating microbes. If pathogens are concentrated in the interstitial water or if they grow, they may pose a health risk, especially for children. This st...

The feasibility of using probes directed towards ribosomal DNAs (rDNAs) as a quantitative approach to estimating cell numbers was examined and applied to study the structure of a bacterial community in humic acid-rich salt marsh sediments. Hybridizations were performed with membr...

Modification of the Pasquill atmospheric diffusion equations for estimating viable microbial airborne cell concentrations downwind from a continuous point source is presented. A graphical method is given to estimate the ground level cell concentration given (1) microbial death ra...

There is no abstract available for this product. If further information is requested, please refer to the bibliographic citation and contact the person listed under Contact field.

Eutrophic-induced hypoxic events pose a serious threat to estuaries in coastal systems. Hypoxic events are becoming more intense and widespread with changes in land use and increased anthropogenic pressures. Microbial communities involved in sedimentary nitrogen (N) cycling may h...

The amendment of soil with biochar has been demonstrated to have an effect not only on the soil physicochemical properties, but also on soil microbial community composition and activity. Previous reports have demonstrated significant impacts on soil microbial community structure....