Accession Number : ADA619402


Title :   Rhizosphere Bacterial Degradation of RDX, Understanding and Enhancement


Descriptive Note : Technical rept. 2006-Feb 2014


Corporate Author : WASHINGTON UNIV SEATTLE DEPT OF CIVIL ENGINEERING


Personal Author(s) : Strand, Stuart ; Stahl, David ; Bruce, Neil ; Rylott, Elizabeth ; MacGregor, Barbara


Full Text : https://apps.dtic.mil/dtic/tr/fulltext/u2/a619402.pdf


Report Date : Feb 2014


Pagination or Media Count : 225


Abstract : Our overall goals were to identify RDX-degrading bacteria in plant rhizospheres, discover the factors that control their abundance and diversity, and develop probes that can be used in the field to detect them. We suggest that important controlling variables in determining RDX persistence in soil are carbon and nitrogen availability. This implies that soil bacteria do not effectively degrade energetic materials in situ unless they are associated with a carbon-rich environment that selects for populations active in either direct or cometabolic degradation of RDX. Further, we expected that activity of RDX-degrading bacteria would be favored by specific carbon sources in the root exudate spectrum, allowing the rhizosphere to be manipulated to enhance populations of RDX-degrading bacteria.


Descriptors :   *BACTERIA , *BIODEGRADATION , *RDX , *SOILS , CARBON , CULTURES(BIOLOGY) , GENES , ISOTOPES , NITROGEN , PSEUDOMONAS FLUORESCENS , RANGES(FACILITIES) , RIBONUCLEIC ACIDS


Subject Categories : Biology
      Microbiology
      Geology, Geochemistry and Mineralogy
      Ammunition and Explosives


Distribution Statement : APPROVED FOR PUBLIC RELEASE