HOME >> BIOLOGY >> NEWS
PCB breakdown in rivers depends on sediment-specific bacteria, find Carnegie Mellon U. scientists

One of Mother Nature's most promising weapons to break down persistent, toxic polychlorinated biphenyls (PCBs) is bacteria. Now, a study by Carnegie Mellon University scientists provides convincing evidence that how quickly a PCB gets eaten and what it becomes depends on where it settles. Using DNA fingerprinting, the Carnegie Mellon team discovered distinct bacterial populations in the first-ever side-by-side comparison of PCB-laden sediments taken from separate, contaminated rivers. The results are being reported by graduate student Christine Wang on Sunday, Aug. 22, at the 228th annual meeting of the American Chemical Society (ACS) in Philadelphia, Pa. (ENVR 12, Loews -- Commonwealth B).

The investigators studied sediments taken from two rivers in upstate New York where local industries had released PCBs over several decades. They found that bacteria in contaminated Hudson River sediment were faster at digesting an introduced PCB compared with sluggish bacterial cousins at work in contaminated Grasse River sediment.

"Our goal is to determine the roles that different bacterial populations play in PCB breakdown by identifying the kinds of microbes in river sediments as well as their population size and how they remove chlorine atoms from the PCB structure," said William Brown, Ph.D., professor of biological sciences and a principal investigator on the study. "This work tells us that PCB-digesting microbes need to be examined in each contaminated lake or river to understand the fate of PCBs at different sites."

Co-investigators on the team include Edwin Minkley, director, Center for Biotechnology and Environmental Processes in the Department of Biological Sciences, and Jeanne VanBriesen, assistant professor of civil and environmental engineering.

The team is exploring whether different nutrients or other factors could account for the variation between PCB-digesting microbial communities taken from the two rivers.

The research team ul
'"/>

Contact: Lauren Ward
wardle@andrew.cmu.edu
412-268-7761
Carnegie Mellon University
22-Aug-2004


Page: 1 2 3

Related biology news :

1. Carnegie Mellon scientists reveal ways of studying, resolving PCB contamination in US rivers
2. Educational program increases some safety behaviors for older drivers
3. Men regain evolutionary drivers seat
4. Lyme disease ticks follow rivers in midwest
5. Small, mountain rivers play big role in ocean sediment
6. Colorado U. study indicates Denver area drivers unmoved by state air quality advisories
7. Experts meet to evaluate watershed restoration for salmon in Pacific rivers
8. Drivers Should Pay More Of Environmental Costs, Report Says
9. UCSD study shows how we perceive world depends on precise division of labor among cells in brain
10. Ocean life depends on single circulation pattern in Southern Hemisphere
11. Development of hair depends on development of the hair channel

Post Your Comments:
*Name:
*Comment:
*Email:


(Date:6/23/2020)... ... June 23, 2020 , ... ... antibody development services, today announced that the company has received ISO9001:2015 certification ... pharmaceutical, diagnostics, and research industries. The decision to pursue ISO9001 accreditation demonstrates ...
(Date:6/23/2020)... ... June 22, 2020 , ... The field of quantitation ... binding assays (LBA) have dominated this area. However, the use of mass spectrometry in ... This now necessitates the question “How do you choose which approach to use (LBA ...
(Date:6/23/2020)... ... June 23, 2020 , ... In its June 22 online post, ... Dr. James L. Sherley, M.D., Ph.D., founder and director of stem cell biotechnology company ... on June 16 that starting July 5 it would begin offering free ...
Breaking Biology News(10 mins):
(Date:7/10/2020)... ... July 09, 2020 , ... ... of Technology (MIT) has expanded the company’s exclusive license to include clinical ... the point-of-care diagnostic market, focusing initially on the SARS-CoV-2 biosensor. CANARY’s™ ...
(Date:7/10/2020)... ... July 09, 2020 , ... Sentien ... announced the hiring of Allen R. Nissenson, M.D., F.A.C.P., as its Chief Medical ... development of Sentien’s lead product, SBI-101. Dr. Nissenson serves as an Emeritus ...
(Date:7/7/2020)... BOSTON (PRWEB) , ... July 06, 2020 , ... ... Innovative Practices Awards. Entries from Roche, Eli Lilly, Bristol-Myers Squibb, the University of ... Since 2003, Bio-IT World has hosted an elite awards program, highlighting outstanding examples ...
(Date:7/1/2020)... ... June 29, 2020 , ... ... procured purchasing contracts to its membership, recently named BioFit Engineered Products ... the opportunity to purchase ergonomic seating, cafeteria tables, book trucks and carts at ...
Breaking Biology Technology:
Cached News: