Navigation Links
Managing specialized microbes to clean stubborn chemicals from the environment
Date:6/26/2014

e the nature of this stalling during the TCE-to-ethene reaction. Earlier studies had proposed that Dehalococcoides at a given bioremediation site lacked the necessary machinery required to complete the full breakdown of TCE into ethene. An alternate explanation suggested that Dehalococcoides was somehow inhibited during the process.

Delgado's work points to another explanation and a plausible means for rectifying the stalling problem. Dehalococcoides require hydrogen (H2) as an electron donor for their respiratory cycle. The current experiments proved that in some cases, Dehalococcoides are out-competed for hydrogen by a variety of other microorganisms present in the soil or sediment.

Samples of soil and sediment from three sites (Romania, Puerto Rico and South Carolina) were examined. The first two samples were uncontaminated while the third was extracted from a military base in Parris Island, South Carolina a site contaminated with PCE, a chlorinated chemical similar to TCE.

All three samples were used in microcosm studies where general environmental conditions of a given site are replicated in a sample bottle and remediation effects can be acutely analyzed. The studies demonstrated that sites bearing wide microbial diversity (such as the uncontaminated Romanian and Puerto Rican samples) contained large numbers of bacteria capable of out-competing Dehalococcoides for essential hydrogen, thereby causing the breakdown of chlorinated chemicals to stall at the cis-DCE phase.

In the case of the contaminated sample from South Carolina, Dehalococcoides was successful in the full reduction of chlorinated chemical to ethene. The authors speculate that the toxic contaminant in the sediment likely acted to limit microbial diversity, allowing Dehalococcoides better access to hydrogen.

In the Romanian and Puerto Rican soil samples, conditions for Dehalococcoides to thrive were
'/>"/>

Contact: Joseph Caspermeyer
Joseph.Caspermeyer@asu.edu
Arizona State University
Source:Eurekalert  

Page: 1 2 3 4

Related biology news :

1. Managing renewables intelligently
2. Internists must play a larger role in managing menopausal symptoms
3. Managing Type 1 diabetes as an adolescent
4. Managing waters shared across national boundaries: Treasury of papers helps capture 20 years of lessons
5. Research examines new methods for managing digestive health
6. Managing biodiversity data from local government
7. NIST chip produces and detects specialized gas for biomedical analysis
8. AegisCare Offers Specialized Home Health Care for Dementia and Alzheimers Patients
9. First fossil bird with teeth specialized for tough diet
10. Preclinical studies use specialized ultrasound to detect presence of cancer
11. Dinosaur fossil: Even specialized predators didnt turn down free meals
Post Your Comments:
*Name:
*Comment:
*Email:
Related Image:
Managing specialized microbes to clean stubborn chemicals from the environment
(Date:8/28/2014)... of marine protected areas is needed to protect fish ... investigators from the Wildlife Conservation Society and other organizations, ... the largest numbers of species, often at the expense ... functions. , Many vital ecological functions of ... are food for millions of people. This study ...
(Date:8/28/2014)... (Maximizing Access to Research Careers) Program has announced the ... Genetics from October 18 22, 2014 in San ... the entry of students, post doctorates and scientists from ... community and to encourage the participation of young scientists ... year MARC conferred 16 awards totaling $29,600., The FASEB ...
(Date:8/28/2014)... to Research Careers) Program has announced the travel ... 27th Annual Mouse Molecular Genetics Conference from September ... California. These awards are meant to promote ... from underrepresented groups into the mainstream of the ... of young scientists at the Genetics Society of ...
Breaking Biology News(10 mins):Study finds marine protected areas inadequate for protecting fish and ocean ecology 2
... has on aquatic insects in mountain lakes can be ... study completed by U.S. Forest Service and University of ... online issue of the journal Freshwater Biology where they ... practices now in use in California mountain lakes where ...
... Wildlife Conservation Society thanks The Brain Tumor Foundation and ... in performing a brain scan on a gorilla at ... dozens of wildlife veterinarians, zookeepers, and medical personnel from ... MRI Unit, a 48-foot-long MRI facility on wheels that ...
... HOLE, MATiny, toxic protein particles severely disrupt neurotransmission and ... separate studies by Marine Biological Laboratory (MBL) researchers have ... beta, which has long been known to accumulate and ... "These small particles that haven,t aggregated into plaquesthese ...
Cached Biology News:Study assesses impact of fish stocking on aquatic insects 2Gorilla gets MRI at Bronx Zoo 2Gorilla gets MRI at Bronx Zoo 3Tiny but toxic: MBL researchers discover a mechanism of neurodegeneration in Alzheimer's disease 2
(Date:8/29/2014)... August 29, 2014 The global ... billion in 2019. It is expected to grow ... 2019, and was valued at $1.8 billion in ... Transparency Market Research. , For more information regarding ... . , The research report, titled “Companion Diagnostics ...
(Date:8/29/2014)... California (PRWEB) August 29, 2014 ... of Energy's 2014 Hydrogen Production R&D Award ... -- by splitting water using sunlight. , Shared ... (NREL) and the University of Nevada, Las Vegas ... work developing models of photoelectrochemical solar-hydrogen production and ...
(Date:8/28/2014)... Best Sanitizers, Inc., a leader in ... industry, is asking industry professionals to prepare for fall ... E2 soap they’re currently using to the Best Sanitizers’ ... Hand hygiene is critical to fighting cross-contamination and the ... key criteria are identified to evaluate the effectiveness of ...
(Date:8/28/2014)... , Aug. 28, 2014 /PRNewswire/ ... new market research report is ... Whole Exome Sequencing Market ... Preparation, Target Enrichment), by Services ... Synthesis), by Application (Cancer, Monogenic ...
Breaking Biology Technology:Companion Diagnostics Market to Hit $5.6 Billion in 2019: Transparency Market Research 2Companion Diagnostics Market to Hit $5.6 Billion in 2019: Transparency Market Research 3Livermore Team Awarded for Hydrogen Production Research 2Best Sanitizers, Inc. Asks Food Industry Professionals: With Fall Harvest On the Way, Is Your E2 Hand Soap Up to the Task? 2Whole Exome Sequencing Market by Product (Systems, Kits (Library Preparation, Target Enrichment), by Services (Sequencing), by Technology (Sequencing by Synthesis), by Application (Cancer, Monogenic disorders) - Global Forecast to 2018 2Whole Exome Sequencing Market by Product (Systems, Kits (Library Preparation, Target Enrichment), by Services (Sequencing), by Technology (Sequencing by Synthesis), by Application (Cancer, Monogenic disorders) - Global Forecast to 2018 3Whole Exome Sequencing Market by Product (Systems, Kits (Library Preparation, Target Enrichment), by Services (Sequencing), by Technology (Sequencing by Synthesis), by Application (Cancer, Monogenic disorders) - Global Forecast to 2018 4Whole Exome Sequencing Market by Product (Systems, Kits (Library Preparation, Target Enrichment), by Services (Sequencing), by Technology (Sequencing by Synthesis), by Application (Cancer, Monogenic disorders) - Global Forecast to 2018 5Whole Exome Sequencing Market by Product (Systems, Kits (Library Preparation, Target Enrichment), by Services (Sequencing), by Technology (Sequencing by Synthesis), by Application (Cancer, Monogenic disorders) - Global Forecast to 2018 6Whole Exome Sequencing Market by Product (Systems, Kits (Library Preparation, Target Enrichment), by Services (Sequencing), by Technology (Sequencing by Synthesis), by Application (Cancer, Monogenic disorders) - Global Forecast to 2018 7Whole Exome Sequencing Market by Product (Systems, Kits (Library Preparation, Target Enrichment), by Services (Sequencing), by Technology (Sequencing by Synthesis), by Application (Cancer, Monogenic disorders) - Global Forecast to 2018 8Whole Exome Sequencing Market by Product (Systems, Kits (Library Preparation, Target Enrichment), by Services (Sequencing), by Technology (Sequencing by Synthesis), by Application (Cancer, Monogenic disorders) - Global Forecast to 2018 9Whole Exome Sequencing Market by Product (Systems, Kits (Library Preparation, Target Enrichment), by Services (Sequencing), by Technology (Sequencing by Synthesis), by Application (Cancer, Monogenic disorders) - Global Forecast to 2018 10Whole Exome Sequencing Market by Product (Systems, Kits (Library Preparation, Target Enrichment), by Services (Sequencing), by Technology (Sequencing by Synthesis), by Application (Cancer, Monogenic disorders) - Global Forecast to 2018 11Whole Exome Sequencing Market by Product (Systems, Kits (Library Preparation, Target Enrichment), by Services (Sequencing), by Technology (Sequencing by Synthesis), by Application (Cancer, Monogenic disorders) - Global Forecast to 2018 12Whole Exome Sequencing Market by Product (Systems, Kits (Library Preparation, Target Enrichment), by Services (Sequencing), by Technology (Sequencing by Synthesis), by Application (Cancer, Monogenic disorders) - Global Forecast to 2018 13
... Feb. 28 InterMune, Inc.,(Nasdaq: ITMN ) ... Officer of InterMune, will present at Susquehanna,s Second ... on March 5, 2008,at 2:30 p.m. EST., ... presentation, investors and other,interested parties may log on ...
... from Antibody Technology (up 28%); Third Consecutive Quarter of ... Growth in Food Pathogen Testing Business, NEWARK, Del., ... - reported that total revenues for the quarter ended,December ... over the fourth,quarter of 2006. Revenues for the 2007 ...
... BioCryst,Pharmaceuticals (Nasdaq: BCRX ) today announced that ... be released on Tuesday, March 4,2008. At 8:30 a.m. ... to discuss the financial results and provide an update ... will be led by Jon,P. Stonehouse, BioCryst,s Chief Executive ...
Cached Biology Technology:InterMune to Present at the SIGnificant Options in Healthcare Conference 2Strategic Diagnostics Reports Fourth Quarter and Full-Year Financial Results 2Strategic Diagnostics Reports Fourth Quarter and Full-Year Financial Results 3Strategic Diagnostics Reports Fourth Quarter and Full-Year Financial Results 4Strategic Diagnostics Reports Fourth Quarter and Full-Year Financial Results 5Strategic Diagnostics Reports Fourth Quarter and Full-Year Financial Results 6Strategic Diagnostics Reports Fourth Quarter and Full-Year Financial Results 7Strategic Diagnostics Reports Fourth Quarter and Full-Year Financial Results 8Strategic Diagnostics Reports Fourth Quarter and Full-Year Financial Results 9Strategic Diagnostics Reports Fourth Quarter and Full-Year Financial Results 10Strategic Diagnostics Reports Fourth Quarter and Full-Year Financial Results 11Strategic Diagnostics Reports Fourth Quarter and Full-Year Financial Results 12BioCryst Pharmaceuticals to Announce Fourth Quarter and Fiscal Year 2007 Financial Results on March 4, 2008 2BioCryst Pharmaceuticals to Announce Fourth Quarter and Fiscal Year 2007 Financial Results on March 4, 2008 3
... cultured in RPMI 1640 medium with 2 mM ... growth. In order to keep the antigens ... acetone-methanol. The cells are arrayed on a ... wells surface specifically treated to enhance cellular attachment ...
Mouse polyclonal antibody to REXO4 - XPMC2 prevents mitotic catastrophe 2 homolog (Xenopus laevis)...
... StabilCoat Plus Microsphere/Microarray Stabilizer is an aqueous ... and other non-toxic chemicals in a PBS ... 7.4. This product contains a combination ... a preservative. StabilCoat Plus Stabilizer provides ...
... ABgene's Protein Purification Plates are designed ... SDS-PAGE gels. The 96-well plates feature two ... ends of each well. The wells remain ... with buffer, during which time the protein ...
Biology Products: