Isolation and life cycle characterization of lytic viruses infecting heterotrophic bacteria and cyanobacteria

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Basic knowledge on viruses infecting heterotrophic bacteria and cyanobacteria is key to future progress in understanding the role of viruses in aquatic systems and the influence of virus–host interactions on microbial mortality, biogeochemical cycles, and genetic exchange. Such studies require the isolation, propagation, and purification of host–virus systems. This contribution presents some of the most widely used methodological approaches for isolation and purification of bacteriophages and cyanophages, the first step in detailed studies of virus–host interactions and viral genetic composition, and discusses the applications and limitations of different isolation procedures. Most work on phage isolation has been carried out with aerobic heterotrophic bacteria and cyanobacteria, culturable both on agar plates and in enriched liquid cultures. The procedures presented here are limited to lytic viruses infecting such hosts. In addition to the isolation procedures, methods for life cycle characterization (one-step growth experiments) of bacteriophages and cyanophages are described. Finally, limitations and drawbacks of the proposed methods are assessed and discussed
Original languageEnglish
Title of host publicationManual of aquatic viral ecology
EditorsS. W. Wilhelm, M. G. Weinbauer, C. A. Suttle
Number of pages16
Place of PublicationWaco, Tex
PublisherAmerican Society of Limnology and Oceanography, Inc.
Publication date2010
ISBN (Electronic)978-0-9845591-0-7
Publication statusPublished - 2010

ID: 16786724