, Volume 67, Issue 4, pp 644–648 | Cite as

Isolation and purification of microbial community DNA from soil naturally enriched for chitin

  • Pullabhotla V. S. R. N. Sarma
  • Vadlamudi Srinivas
  • Kondreddy Anil
  • Appa Rao PodileEmail author
Full Paper Section Cellular and Molecular Biology


We made an attempt to isolate and purify metagenomic DNA from chitin enriched soil. In this communication we report a modified direct lysis method for soil DNA extraction including initial pre-lysis washing of sample, followed by a rapid polyvinylpyrrolidone-agarose-based purification and electroelution of DNA using Gene-capsule™ assembly. Rapidity was achieved using low molarity conducting media (sodium-borate buffer) for electrophoresis by reducing run time for both the gel electrophoresis and electroelution. Extracted DNA was sufficiently pure and of high quality, evidenced by amplification of 16S rDNA and chitinase genes by PCR. Metagenomic nature of the DNA was confirmed by running V3 (16S rDNA) region amplicons using denaturing gradient gel electrophoresis. This method requires 30 min for purification, and less than 2 h for complete execution of protocol and becomes the first report on the isolation of metagenomic DNA from soil naturally enriched for chitin.

Key words

metagenomic DNA DNA purification chitin-enriched soil denaturing gradient gel electrophoresis 


chitinase A



denaturing gradient gel electrophoresis


Mahtani Chitosan




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Copyright information

© Versita Warsaw and Springer-Verlag Wien 2012

Authors and Affiliations

  • Pullabhotla V. S. R. N. Sarma
    • 1
  • Vadlamudi Srinivas
    • 1
  • Kondreddy Anil
    • 1
  • Appa Rao Podile
    • 1
    Email author
  1. 1.Department of Plant Sciences, School of Life SciencesUniversity of HyderabadHyderabadIndia

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