Navigation Links
Study provides new way to classify E. coli bacteria and test for fecal contamination
Date:4/11/2011

The meaning of the standard fecal coliform test used to monitor water quality has been called into question by a new study that identified sources of Escherichia coli bacteria that might not indicate an environmental hazard.

Fecal pollution of surface waters is measured by the concentration of E. coli bacteria in the water because E. coli is believed to live only in the intestines and waste of humans and other warm-blooded animals, and quickly die outside its host. The presence of E. coli in water also serves as a marker for other potentially more harmful organisms that may accompany it. Positive E. coli tests may lead to the summertime closing of beaches and other recreational bodies of water.

In this new study, researchers report identifying and sequencing the genomes of nine strains of E. coli that have adapted to living in the environment independent of warm-blooded hosts. These strains are indistinguishable from typical E. coli based on traditional tests and yield a positive fecal coliform result though researchers say they may not represent a true environmental hazard.

"The basis for E. coli's widespread use as a fecal pollution indicator is the traditional thinking that E. coli cannot survive for extended periods outside a host or waste, but this study indicates that's not true," said Kostas Konstantinidis, an assistant professor in the Georgia Tech School of Civil and Environmental Engineering. "These results suggest the need to develop a new culture-independent, genome-based coliform test so that the non-hazardous environmental types of E. coli are not counted as fecal contamination."

A paper describing the research was published April 11 in the early edition of the journal Proceedings of the National Academy of Sciences. The work was sponsored by the National Science Foundation and the National Institutes of Health.

Konstantinid
'/>"/>

Contact: Abby Robinson
abby@innovate.gatech.edu
404-385-3364
Georgia Institute of Technology Research News
Source:Eurekalert  

Page: 1 2 3

Related biology news :

1. Long-term study shows effect of climate change on animal diversity
2. £2 million study to reveal workings of dementia genes
3. New study looks to define evangelicals and how they affect polling
4. CU-Boulder study suggests air quality regulations miss key pollutants
5. Researchers study acoustic communication in deep-sea fish
6. Study reveals homeowner perceptions in fire-prone areas
7. Researchers study how pistachios may improve heart health
8. Study: urban black bears live fast, die young
9. New study indicates link between weight gains during pregnancy and dieting history
10. Study reveals specific gene in adolescent men with delinquent peers
11. Sweat it out: UH study examines ability of sweat patches to monitor bone loss
Post Your Comments:
*Name:
*Comment:
*Email:
Related Image:
Study provides new way to classify E. coli bacteria and test for fecal contamination
(Date:4/24/2014)... International Glossina Genome Initiative (IGGI) has produced the first ... morsitans . The blood-sucking insect is the sole transmitter ... sub-Saharan Africa. The vast store of genetic data will ... and provide insights into the tsetse fly,s unique biology. ... insect world: it feeds exclusively on the blood of ...
(Date:4/24/2014)... 2014D-ribose is a commercially important sugar used as ... starting compound for synthesizing riboflavin and several antiviral ... to increase the bacteria,s ability to produce D-ribose ... industrial-scale production of this valuable chemical, as described ... a peer-reviewed journal from Mary Ann Liebert, Inc., ...
(Date:4/24/2014)... Researchers at Ludwig-Maximilians-Universitaet (LMU) in Munich have identified ... system to discriminate between viral and endogenous RNAs ... they take control of cellular metabolism and hijack ... This process is dependent on viral RNA molecules ... of RNA viruses) and/or newly synthesized in the ...
Breaking Biology News(10 mins):Genetic code of the deadly tsetse fly unraveled 2Viral infections: Identifying the tell-tale patterns 2Viral infections: Identifying the tell-tale patterns 3
... from Boston College have developed a new class of ... that reveals the telltale signs of cellular death, particularly ... in the current electronic edition of the Journal ... by Assistant Professor of Chemistry Jianmin Gao successfully grafted ...
... fuel economy is on everyone,s minds these days. The ... is no exception. For several years, the transit authority, ... fleet in an effort to curb the transportation system,s fuels costs. ... hybrids is the question the University of Houston has been asked ...
... of California, Berkeley, are offering hope to the 10 percent ... often high-pitched ringing or buzzing in the ears that can ... Their new findings, published online last week in the journal ... several new approaches to treatment, including retraining the brain, and ...
Cached Biology News:Small molecule receptor detects lipid's telltale sign of cell death 2University of Houston to test local buses for fuel efficiency 2Tinnitus discovery could lead to new ways to stop the ringing 2Tinnitus discovery could lead to new ways to stop the ringing 3
(Date:1/15/2014)... (PRWEB) January 15, 2014 2013 was ... Scottsdale’s Brain State Technologies®. They saw continued independent research ... Center who were awarded a $1 million grant from ... in “Brain and Behavior” a peer reviewed journal, Amy ...
(Date:1/14/2014)... Carahsoft and CDS Federal Services have ... at 2pm EST (11am PST), “Natural Language Processing: Converting ... how technology can turn raw, heterogeneous data into actionable ... The online webinar will last approximately one hour. , ...
(Date:1/14/2014)... AUSTIN, Texas , Jan. 14, 2014 ... analyze and research medicinal plants and therapeutic derivatives ... industry, health professionals, and researchers about the challenges ... (Logo: http://photos.prnewswire.com/prnh/20100430/DC95601LOGO ) The ...
(Date:1/14/2014)... 2014 Global Record Systems, LLC, ... technology solutions for patients, physicians, the biopharmaceutical industry, ... today the signing of a three-year Research Collaboration ... Administration (FDA). This initiative is designed to ...
Breaking Biology Technology:Dynamic Innovative Technology Showcased at Scottsdale Company’s Open House 2Dynamic Innovative Technology Showcased at Scottsdale Company’s Open House 3Webcast - Natural Language Processing: Converting Raw Data into Actionable Knowledge – Hosted by Carahsoft and CDS Federal Services 2World's Largest Group of Medicinal Plant Researchers Endorses ABC-AHP-NCNPR Botanical Adulterants Program 2World's Largest Group of Medicinal Plant Researchers Endorses ABC-AHP-NCNPR Botanical Adulterants Program 3World's Largest Group of Medicinal Plant Researchers Endorses ABC-AHP-NCNPR Botanical Adulterants Program 4World's Largest Group of Medicinal Plant Researchers Endorses ABC-AHP-NCNPR Botanical Adulterants Program 5World's Largest Group of Medicinal Plant Researchers Endorses ABC-AHP-NCNPR Botanical Adulterants Program 6World's Largest Group of Medicinal Plant Researchers Endorses ABC-AHP-NCNPR Botanical Adulterants Program 7World's Largest Group of Medicinal Plant Researchers Endorses ABC-AHP-NCNPR Botanical Adulterants Program 8Global Record Systems Announces Research Collaboration Agreement with FDA to Create a Novel “Big Data” Paradigm for Collection of Patient Safety and Outcomes Information 2
... Services Inc., leads a videocast discussion with top executives on ... to Asia. , ... (PRWEB) November ... Atlanta, Georgia, Jim Miller, president of PharmSource Information Services Inc., ...
... Arpida,announced today that it is refocusing all projects and ... is to be seen as a,consequence of the negative recommendation ... 20 November 2008 regarding the,approval of Iclaprim in the U.S. ... of the FDA advisory board,s recommendation the Arpida,board intends to ...
... sailing a spacecraft by the optical force of the sun,s light. ... the oversized sails that have been tried. Now a team led ... Science has shown that the force of light indeed can ... to nano-proportions. , Their work opens the door to a ...
Cached Biology Technology:PharmSource President Moderates Videocast on Outsourcing to Asia at AAPS 2Arpida to Restructure and Focus on Key Projects 2'The photon force is with us': Harnessing light to drive nanomachines 2
... The Synaptic Vesicles Isolation Kit ... preparing an enriched synaptic vesicle fraction. ... hypo-osmotic lysis of the synaptosomes, and ... density gradient. The kit also contains ...
... The Ultra Silica Bead Kit has been designed ... gels and solutions. Features Ultra ... minutes Uniform silica beads are easy to resuspend ... DNA Highly pure DNA (suitable for PCR) ...
... simple and efficient method for purification of DNA ... DNA fragments selectively absorbed in the spin column ... at room temperature for PCR product with equal ... of DNA can be purified with a single ...
When added to either StemSep CD4+ or CD8+ T Cell Enrichment cocktails, human HLA-DR TAC is designed to deplete human HLA-DR from samples to isolate resting CD4+ or CD8+ T cells....
Biology Products: