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PCR amplification of crude microbial DNA extracted from soil
C Yeates1, M R Gillings, A D Davison
1Key Centre for Biodiversity and Bioresources, School of Biological Sciences, Macquarie University, Sydney, Australia. cyeates@rna.bio.mq.edu.au
Letters in Applied Microbiology
|November 14, 1997
Abstract:
A rapid, inexpensive, large-scale DNA extraction method involving minimal purification has been developed that is applicable to various soil types. DNA was extracted from 100 g of soil using direct lysis with glass beads and sodium dodecyl sulphate (SDS) followed by polyethylene glycol precipitation, potassium acetate precipitation, phenol extraction and isopropanol precipitation. The crude extract could be used in PCR directed at high-copy number (bacterial small subunit rRNA) and single-copy (fungal beta-tubulin) genes.