Journal of Medical Bacteriology 2016. 5(3-4):22-28.

A Rapid and Reproducible Genomic DNA Extraction Protocol for Sequence-Based Identification of Archaea, Bacteria, Cyanobacteria, Diatoms, Fungi, and Green Algae
Farkhondeh Saba, Moslem Papizadeh, Javad Khansha, Mahshid Sedghi, Mehrnoosh Rasooli, Mohammad Ali Amoozegar, Mohammad Reza Soudi, Seyed Abolhassan Shahzadeh Fazeli

Abstract


Background:  Sequence-based identification of various microorganisms including Archaea, Bacteria, Cyanobacteria, Diatoms, Fungi, and green algae necessitates an efficient and reproducible genome extraction procedure though which a pure template DNA is yielded and it can be used in polymerase chain reactions (PCR). Considering the fact that DNA extraction from these microorganisms is time consuming and laborious, we developed and standardized a safe, rapid and inexpensive miniprep protocol.

 Methods:  According to our results, amplification of various genomic regions including SSU, LSU, ITS, β-tubulin, actin, RPB2, and EF-1 resulted in a reproducible and efficient DNA extraction from a wide range of microorganisms yielding adequate pure genomic material for reproducible PCR-amplifications.

 Results:   This method relies on a temporary shock of increased concentrations of detergent which can be applied concomitant with multiple freeze-thaws to yield sufficient amount of DNA for PCR amplification of multiple or single fragments(s) of the genome. As an advantage, the recipe seems very flexible, thus, various optional steps can be included depending on the samples used.

Conclusion:   Having the needed flexibility in each step, this protocol is applicable on a very wide range of samples. Hence, various steps can be included depending on the desired quantity and quality.

Keywords


Eukaryotes; Genome (DNA) extraction; Identification; Prokaryotes; Sequence

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