Journal ArticleDOI
High abundance of viruses found in aquatic environments.
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Using a new method for quantitative enumeration, up to 2.5 x IO8 virus particles per millilitre in natural waters indicate that virus infection may be an important factor in the ecological control of planktonic micro-organisms.Abstract:
The concentration of bacteriophages in natural unpolluted waters is in general believed to be low, and they have therefore been considered ecologically unimportant. Using a new method for quantitative enumeration, we have found up to 2.5 x 10(8) virus particles per millilitre in natural waters. These concentrations indicate that virus infection may be an important factor in the ecological control of planktonic micro-organisms, and that viruses might mediate genetic exchange among bacteria in natural aquatic environments.read more
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A century of the phage: past, present and future
TL;DR: A century of phage research is discussed and its impact on basic and applied biology is discussed, from sequencing and genome engineering to the recent discovery and exploitation of CRISPR–Cas phage resistance systems.
Journal ArticleDOI
Bacterial Interactions in Early Life Stages of Marine Cold Water Fish.
G.H. Hansen,J.A. Olafsen +1 more
TL;DR: Successful rearing of early life stages of several marine fish species depends on knowledge of the complex interactions among the cultured organisms and the bacterial communities which develop at the mucosal surfaces and in the ambient water and rearing systems.
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Mechanisms and Rates of Decay of Marine Viruses in Seawater
Curtis A. Suttle,Feng Chen +1 more
TL;DR: Calculations suggest that in clear oceanic waters exposed to full sunlight, most of the virus decay, averaged over a depth of 200 m, would be attributable to solar radiation.
Journal ArticleDOI
The phage-host arms race: Shaping the evolution of microbes
Adi Stern,Rotem Sorek +1 more
TL;DR: The unique and common features of phage resistance mechanisms and their role in global biodiversity are discussed and the commonalities between defense mechanisms suggest avenues for the discovery of novel forms of these mechanisms based on their evolutionary traits.
References
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Journal ArticleDOI
Minimum bacterial density for bacteriophage replication: implications for significance of bacteriophages in natural ecosystems.
B A Wiggins,M Alexander +1 more
TL;DR: It is suggested that bacteriophages do not affect the number or activity of bacteria in environments where the density of the host species is below the host cell threshold of about 10(4) CFU/ml.
Journal ArticleDOI
Rate of bacterial mortality in aquatic environments
TL;DR: Results obtained from river water, estuarine water, and seawater show overall bacterial mortality rates in the range 0.010 to 0.030 h, in good agreement with the range of growth rates measured in the same environments.
Journal ArticleDOI
Do bacteria-sized marine eukaryotes consume significant bacterial production?
Jed A. Fuhrman,George B. McManus +1 more
TL;DR: Evidence is presented that previously uncharacterized, small eukaryotes that are able to pass even 0.6-micrometer filters may be responsible for a large fraction of the total grazing in coastal waters.