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whereRU: Aresty Poster 88 - Biologically-catalyzed Arsenic Processing by Aresty Posters 2009

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Taken by
Aresty Posters 2009 Aresty Posters 2009
Explore score
0.06 Gigapixels
Date added
May 19, 2009
Date taken
May 18, 2009

Impact of Varying Arsenic Concentrations on Microbial Community Structures
by Shravan Dave [shravan@eden.rutgers.edu]
Young Lab, Biotech Center, School of Environmental & Biological Sciences

Microbial reduction of arsenic(V) to arsenic(III) plays an important role in environmental arsenic mobilization. Biologically catalyzed reduction of As(V) to As(III) can facilitate clean-up of arsenic-contaminated sites since As(III) is much more mobile in the environment. Because many bacteria are known to process low levels of arsenic as a "detox" mechanism, it is important to differentiate such "detox" microbes from ones that actually utilize arsenic as a terminal electron acceptor.This project investigated bacteria enriched from contaminated sediments in the NJ Meadowlands by exposing identical sediments to either low or high As(V) concentrations. After establishing stable As(V)-reducing cultures, amplification and cloning of the 16s rRNA gene was used to determine community phylogenetics. The general community structure of the original sediment was determined, along with a qualitative differentiation in said structure after low- and high-As(V) exposure.

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