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Two Tales of Prokaryotic Genomic Diversity: Escherichia coli and Halophiles

Lejla Pašić, Jerneja Ambrožić Avguštin, Marjanca Starčič Erjavec, Blagajana Herzog-Velikonja, Zdravko Podlesek and Darja Žgur-Bertok*

Department of Biology, Biotechnical Faculty, University of Ljubljana, Večna pot 111, SI-1000 Ljubljana, Slovenia


Article history
:
Received October 28, 2013
Accepted March 21, 2014

Key words:
Escherichia coli, genomic diversity, virulence, antibiotic resistance, SOS response, bacteriocins, halophiles, metagenomics

Summary:

Prokaryotes are generally characterized by vast genomic diversity that has been shaped by mutations, horizontal gene transfer, bacteriocins and phage predation. Enormous genetic diversity has developed as a result of stresses imposed in harsh environments and the ability of microorganisms to adapt. Two examples of prokaryotic diversity are presented: on intraspecies level, exemplified by Escherichia coli, and the diversity of the hypersaline environment, with the discussion of food-related health issues and biotechnological potential.


*Corresponding author:      darja.zgur.bertok@bf.uni-lj.si
                                          

         

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