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Updated: Jun 13, 2026
11:24
Extraction of High Molecular Weight Genomic DNA from Soils and Sediments
Published on: November 10, 2009
Practical method for extraction of PCR-quality DNA from environmental soil samples
Kelly A Fitzpatrick1, Gilbert J Kersh, Robert F Massung
1Centers for Disease Control and Prevention, MS G-13, 1600 Clifton Rd., Atlanta, GA 30333, USA.
Applied and Environmental Microbiology
|May 4, 2010
Summary
This study evaluated DNA extraction kits for soil samples. Coxiella burnetii DNA was successfully detected in both spiked and environmental soil samples, showing method effectiveness.
Area of Science:
- Environmental microbiology
- Molecular diagnostics
Background:
- Accurate detection of Coxiella burnetii in environmental samples is crucial for public health.
- Soil is a potential reservoir for Coxiella burnetii, necessitating reliable DNA extraction methods.
Purpose of the Study:
- To assess the efficacy of commercially available DNA extraction kits for obtaining PCR-quality DNA from soil.
- To determine the sensitivity of these methods for detecting low levels of Coxiella burnetii DNA.
Main Methods:
- Evaluation of paired, commercially available DNA extraction kits.
- Testing on soil samples spiked with known quantities of Coxiella burnetii.
- Analysis of 73 environmental soil samples for Coxiella burnetii DNA presence.
Main Results:
- PCR-quality DNA was successfully extracted from environmental soil samples.
- Coxiella burnetii DNA was detected in spiked samples at concentrations below 1,000 genome equivalents per gram.
- The bacterium was identified in 16.4% (12 out of 73) of the tested environmental soil samples.
Conclusions:
- Commercially available DNA extraction kits are effective for isolating PCR-ready DNA from soil.
- The evaluated methods demonstrate sufficient sensitivity for detecting low-level Coxiella burnetii contamination in environmental soils.
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