Journal
SOIL BIOLOGY & BIOCHEMISTRY
Volume 41, Issue 6, Pages 1331-1334Publisher
PERGAMON-ELSEVIER SCIENCE LTD
DOI: 10.1016/j.soilbio.2008.12.027
Keywords
Soil; Atrazine; DGGE; FISH; Bacteria; Community; Enrichment; BioSep (R) beads
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Funding
- United States Department of Agriculture, Cooperative, State, Research, Education, and Extension Service, National Research Initiative [2004-35107-14884]
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We examined the community composition of microbes that colonized atrazine-containing beads buried in agricultural soils that differed in atrazine treatment history. Bacterial abundance was 5-40-fold greater in atrazine-fortified beads. In beads containing 20 mg atrazine kg(-1) buried in soil with a history of atrazine application (conditioned soil), the abundance of Actinobacteria increased approximately 80-fold whereas in control soil, Actinobacteria were enriched only 10-fold and the gamma-Proteobacteria and Planctomycetes increased by 60- and 25-fold, respectively. The gamma-Proteobacteria were enriched by 120- and 230-fold in beads containing 200 mg atrazine kg(-1) in conditioned and control soil, respectively. The results demonstrate that BioSep (R) beads are a suitable matrix for recruiting a diverse subset of the bacterial community involved in atrazine degradation. Published by Elsevier Ltd.
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