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Related Concept Videos

DNA Isolation01:24

DNA Isolation

45.8K
DNA isolation protocols can be fast and straightforward or complex and time-consuming depending on the type and quality of DNA required for further processing. For example, plasmid DNA extraction is a bit more complicated than genomic DNA extraction because of the need for an appropriate lysis method to separate plasmid DNA from gDNA during isolation. However, for specific applications, such as long-range DNA sequencing that require a good yield of high- quality DNA samples, we need to follow...
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Updated: Mar 13, 2026

DNA Extraction from 0.22 μM Sterivex Filters and Cesium Chloride Density Gradient Centrifugation
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DNA extraction from benthic Cyanobacteria: comparative assessment and optimization.

V Gaget1, A Keulen1, M Lau2

  • 1Ecology and Environmental Sciences, School of Biological Sciences, University of Adelaide, Adelaide, SA, Australia.

Journal of Applied Microbiology
|October 26, 2016
PubMed
Summary
This summary is machine-generated.

Commercial DNA extraction kits, especially those with physical cell-lysis, offer superior DNA yield for analyzing benthic Cyanobacteria compared to traditional methods. This improves environmental monitoring and characterization of these microorganisms.

Keywords:
MO BIODNA extractionQiagenbenthic Cyanobacteriaepilithic biofilmphenol-chloroform

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Area of Science:

  • Environmental microbiology
  • Molecular biology
  • Water quality monitoring

Background:

  • Benthic Cyanobacteria produce toxins and odors, impacting drinking water quality.
  • Biofilms produced by benthic microorganisms protect these organisms.
  • Accurate identification and abundance monitoring of benthic Cyanobacteria require effective DNA isolation.

Purpose of the Study:

  • To identify the optimal DNA extraction method for maximizing DNA recovery from benthic Cyanobacteria.
  • To compare the efficacy of commercial DNA extraction kits against conventional methods.
  • To ensure high DNA yield for downstream molecular analyses like quantitative PCR (qPCR).

Main Methods:

  • Compared phenol-chloroform extraction with five commercial DNA extraction kits.
  • Investigated the impact of chemical and physical cell-lysis steps.
  • Evaluated DNA quantity and quality using UV spectrophotometry and qPCR with Cyanobacteria-specific primers.

Main Results:

  • Commercial kits yielded significantly higher DNA quantity and quality than the phenol-chloroform method.
  • Kits incorporating physical cell-lysis demonstrated the highest efficiency.
  • Specific kits, MO BIO Power Soil and Biofilm, were identified as most effective.

Conclusions:

  • Commercial DNA extraction kits with physical cell-lysis are superior for isolating DNA from benthic Cyanobacteria.
  • These kits provide greater DNA recovery and avoid hazardous chemicals.
  • Optimized DNA isolation facilitates improved characterization of benthic Cyanobacteria in environmental studies.