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      Phage puppet masters of the marine microbial realm

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      Nature Microbiology
      Springer Nature

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          Virioplankton: Viruses in Aquatic Ecosystems

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            Ocean plankton. Determinants of community structure in the global plankton interactome.

            Species interaction networks are shaped by abiotic and biotic factors. Here, as part of the Tara Oceans project, we studied the photic zone interactome using environmental factors and organismal abundance profiles and found that environmental factors are incomplete predictors of community structure. We found associations across plankton functional types and phylogenetic groups to be nonrandomly distributed on the network and driven by both local and global patterns. We identified interactions among grazers, primary producers, viruses, and (mainly parasitic) symbionts and validated network-generated hypotheses using microscopy to confirm symbiotic relationships. We have thus provided a resource to support further research on ocean food webs and integrating biological components into ocean models.
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              Lysogeny in nature: mechanisms, impact and ecology of temperate phages.

              Viruses that infect bacteria (phages) can influence bacterial community dynamics, bacterial genome evolution and ecosystem biogeochemistry. These influences differ depending on whether phages establish lytic, chronic or lysogenic infections. Although the first two produce virion progeny, with lytic infections resulting in cell destruction, phages undergoing lysogenic infections replicate with cells without producing virions. The impacts of lysogeny are numerous and well-studied at the cellular level, but ecosystem-level consequences remain underexplored compared to those of lytic infections. Here, we review lysogeny from molecular mechanisms to ecological patterns to emerging approaches of investigation. Our goal is to highlight both its diversity and importance in complex communities. Altogether, using a combined viral ecology toolkit that is applied across broad model systems and environments will help us understand more of the diverse lifestyles and ecological impacts of lysogens in nature.
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                Author and article information

                Journal
                Nature Microbiology
                Nat Microbiol
                Springer Nature
                2058-5276
                June 4 2018
                Article
                10.1038/s41564-018-0166-y
                29867096
                337932a9-ef64-47bb-aadb-8a62cfaf7d5b
                © 2018

                http://www.springer.com/tdm

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