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:6/14/2017)... (NYSE: IBM ) is introducing several innovative partner startups ... collaboration between startups and global businesses, taking place in ... nine startups will showcase the solutions they have built with ... France is one of the ... percent increase in the number of startups created between 2012 ...
(Date:5/16/2017)... 16, 2017   Bridge Patient Portal , ... MD EMR Systems , an electronic medical ... GE, have established a partnership to build an ... the GE Centricity™ products, including Centricity Practice Solution ... These new integrations will allow healthcare delivery ...
(Date:4/19/2017)... New York , April 19, 2017 ... competitive, as its vendor landscape is marked by the ... the market is however held by five major players ... Safran. Together these companies accounted for nearly 61% of ... of the leading companies in the global military biometrics ...
Breaking Biology News(10 mins):
(Date:10/12/2017)... ... October 12, 2017 , ... ... platform specifically designed for life science researchers to analyze and interpret datasets, ... Franklin, who made a major contribution to the discovery of the double-helix ...
(Date:10/11/2017)... ... ... Personal eye wash is a basic first aid supply for any work environment, but most ... you rinse first if a dangerous substance enters both eyes? It’s one less decision, and ... unique dual eye piece. , “Whether its dirt and debris, or an acid or alkali, ...
(Date:10/11/2017)... , Oct. 11, 2017  VMS BioMarketing, a leading ... a nationwide oncology Clinical Nurse Educator (CNE) network, which will ... need for communication among health care professionals to enhance the ... nurses, office staff, and other health care professionals to help ... breast cancer. ...
(Date:10/11/2017)... ... October 11, 2017 , ... ... implantation and pregnancy rates in frozen and fresh in vitro fertilization (IVF) ... and maternal age to IVF success. , After comparing the results from the ...
Breaking Biology Technology:
Cached News: