Molecular profiling of microbial communities from contaminated sources: Use of substractive cloning methods and rDNA spacer sequences. 1997 annual progress report

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'This project is to develop molecular methods for rapid characterization of microbial communities in contaminated ecosystems. The authors are exploring the use of {sup 16}s ribosomal DNA intergenic spacer regions (ISRs) to profile community composition. The choice proves to be a good one: there are 200--550 bases of 1 to 3 variable regions from which to choose species-specific probes, as well as 2--4 stretches of conserved sequence from which to develop universal PCR (polymerase chain reaction) primers. Preliminary community characterization is complete, and several types of arrays are under development to determine the types of bacteria present and the status ... continued below

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4 pages

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Creator: Unknown. December 1, 1997.

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Description

'This project is to develop molecular methods for rapid characterization of microbial communities in contaminated ecosystems. The authors are exploring the use of {sup 16}s ribosomal DNA intergenic spacer regions (ISRs) to profile community composition. The choice proves to be a good one: there are 200--550 bases of 1 to 3 variable regions from which to choose species-specific probes, as well as 2--4 stretches of conserved sequence from which to develop universal PCR (polymerase chain reaction) primers. Preliminary community characterization is complete, and several types of arrays are under development to determine the types of bacteria present and the status of the ground water. Profiling the community composition of polluted groundwater will impact the broad field of microbial ecology as well as mixed-waste bioremediation. Results The samples the authors have been analysing were provided by Dr. Fred Brockman from Pacific Northwest Laboratory, and were collected at the US DOE Hanford site, Washington state. The samples were microbial filtrates from ground water polluted with 2 mg/L carbon tetrachloride and 250 mg/L nitrate and subjected to enrichment (acetate + nitrate) and recirculation. This project is described in some detail in PNNL-11113, Accelerated In Situ Bioremediation of Groundwater, by M.J. Truex, B.S. Hooker, and D.B. Anderson, July 1996.'

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4 pages

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  • Other: DE00013699
  • Report No.: EMSP-55152--97
  • Grant Number: NONE
  • DOI: 10.2172/13699 | External Link
  • Office of Scientific & Technical Information Report Number: 13699
  • Archival Resource Key: ark:/67531/metadc623622

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  • December 1, 1997

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  • June 16, 2015, 7:43 a.m.

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  • Jan. 6, 2018, 11:34 p.m.

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Molecular profiling of microbial communities from contaminated sources: Use of substractive cloning methods and rDNA spacer sequences. 1997 annual progress report, report, December 1, 1997; Baltimore, Maryland. (digital.library.unt.edu/ark:/67531/metadc623622/: accessed August 16, 2018), University of North Texas Libraries, Digital Library, digital.library.unt.edu; crediting UNT Libraries Government Documents Department.