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
Citations
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Journal ArticleDOI
Chlorovirus: a genus of Phycodnaviridae that infects certain chlorella-like green algae
TL;DR: Chlorella viruses are large, icosahedral, plaque-forming, dsDNA viruses that infect certain unicellular, chlorella-like green algae and host endosymbionts of the protozoan Paramecium bursaria.
Book ChapterDOI
Molecular Biology in Studies of Ocean Processes
Paul G. Falkowski,Julie LaRoche +1 more
TL;DR: This chapter discusses the potential value of molecular biology to biological oceanography with emphasis on the techniques that appropriate for use in the marine environment, including those techniques that can be modified for use at sea, techniques that are simple and low cost, and those that are relevant to major problems in oceanography.
Journal ArticleDOI
Bacterial biomass and production rates in the Gulf Stream front regions
TL;DR: In this article, the authors measured eight depths throughout the euphotic zone at 10 stations in Gulf Stream water and front regions in October 1985 and found that high variability in bacterial biomass and production and in biomass related to layers of different water masses was observed in the front regions.
Journal ArticleDOI
Wide geographic distribution of bacteriophages that lyse the same indigenous freshwater isolate (Sphingomonas sp. strain B18).
TL;DR: It was concluded that phages could be a major factor in shaping the structure of bacterial communities and maintaining a high bacterial diversity.
Journal ArticleDOI
A Novel, Highly Related Jumbo Family of Bacteriophages That Were Isolated Against Erwinia
Ruchira Sharma,Brittany A. Pielstick,Kimberly A. Bell,Tanner B. Nieman,Olivia A. Stubbs,Edward L. Yeates,David A. Baltrus,Julianne H. Grose +7 more
TL;DR: Eight lytic bacteriophages of E. amylovora that were isolated from the Wasatch front that are highly similar to vB_EamM_Ea35-70 which was isolated in Ontario, Canada are characterized.
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.