Mortality of Microbes in Aquatic Environments
نویسندگان
چکیده
Viruses, or Virus-Like Particles (VLPs), occur in large numbers (~10-10 VLPs/ml) and are acknowledged to be general constituents of aquatic ecosystems. The bactericidal effect of VLPs derived from cultured marine strains and natural marine waters were examined under various multiplicity of infection (MOI = 5.28 0.0017) using Escherichia coli AB1157 as the recipient. The E. coli population was reduced by as much as one to two orders of magnitude. Transduction frequencies between 10 and 10/VLP were observed for all VLPs studied. The VLPs examined here may differ from current concepts of viruses with narrow host ranges. Such VLPs are likely to control microbial populations and promote microbial diversity by non-specific gene transfer with hosts composing a wider phylogenetic range in natural microbial populations.
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