NSF LogoNSF Award Abstract - #0221836 AWSFL008-DS3

BE/GEN-EN: Who's Doing What in a Complex Bioreactor? Stable Isotope Probing of
Specific Degraders in Engineered Biological Treatment Processes

NSF Org BES
Latest Amendment Date September 6, 2002
Award Number 0221836
Award Instrument Standard Grant
Program Manager Patrick L. Brezonik
BES DIV OF BIOENGINEERING & ENVIRON SYSTEMS
ENG DIRECTORATE FOR ENGINEERING
Start Date September 1, 2002
Expires August 31, 2006 (Estimated)
Expected Total Amount $563999 (Estimated)
Investigator Michael D. Aitken mike_aitken@unc.edu (Principal Investigator current)
Sponsor U of NC Chapel Hill
104 Airport Drive
Chapel Hill, NC 275991350 919/966-3411
NSF Program 1440 ENVIRONMENTAL ENGINEERING
Field Application 0316000 Trace Contaminants
0313040 Water Pollution
Program Reference Code 1440,1689,9187,EGCH,

Abstract

0221836 Aitken A stable isotope method will be used to prepare heavy DNA from incubations of mixed cultures and specific C-13 labelled PAH substrates in completely closed slurry aerobic bioreactors. The bioreactor is fitted with a gas chromatograph which allows on- line respirometric measurements. DNA and rRNA will be extracted from the slurry, amplified by PCR, and analyzed on agarose gels. Comparisons between the DGGE profiles obtainedfrom rDNA (PCR), rRNA (RT-PCR) and C-13 labelled rDNA and rRNA will provide insight into the metabolically active members of the community. Selected DGGE bands will be sequenced and submitted for phylogenetic analysis using PHYLIP software.

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