Are viruses driving microbial diversification and diversity?

Weinbauer, Markus G.; Rassoulzadegan, Fereidoun

doi:10.1046/j.1462-2920.2003.00539.x

Cited by 550 publications

(445 citation statements)

References 107 publications

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“…Additionally, the influence of virus is site-specific, varying according to local trophodynamics in the food web (Ory et al, 2010). Overall, the impact of the viruses on food-web processes depends on the balance between bacterial losses from viruses and from protists (Weinbauer and Rassoulzadegan, 2004).…”

Section: The Viral Loopmentioning

confidence: 99%

Bridging the Gap between Knowing and Modeling Viruses in Marine Systems—An Upcoming Frontier

Mateus

2017

Front. Mar. Sci.

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Viruses are the most abundant biological entities in the world's oceans. Their potential control on the dynamics and diversity of bacterioplankton and some phytoplankton groups, and consequent effect on the flow of energy and matter in food webs, may be argued as beyond dispute. Paradoxically, their importance seems to be persistently underestimated by marine modelers, frequently by exclusion, despite the uninterrupted volume of knowledge advanced during the past decades. Bridging the gap between knowing and modeling the role of viruses is, undoubtedly, one of the upcoming frontiers to be crossed in modeling the plankton. This paper has a two-fold objective: (1) review the knowledge on the roles of viruses in marine systems that has been put forward over the past decades, and (2) see how viruses have been incorporated into marine ecosystem models, along with the factors that are limiting their inclusion.

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Section: The Viral Loopmentioning

confidence: 99%

Bridging the Gap between Knowing and Modeling Viruses in Marine Systems—An Upcoming Frontier

Mateus

2017

Front. Mar. Sci.

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“…Viruses can also transfer sequences and genes between virus and host. It has been proposed that viruses are a main driving force in microbial diversification and diversity (Weinbauer and Rassoulzadegan 2004). Some authors prefer a war-like metaphor to describe the virus-host relationship (Forterre andPrangishvili 2009, Brüssow 2009).…”

Section: Before Group Selection Might Be Considered Group Identity Mmentioning

confidence: 99%

When Competing Viruses Unify: Evolution, Conservation, and Plasticity of Genetic Identities

Villarreal

Witzany

2015

J Mol Evol

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In the early 1970s, Manfred Eigen and colleagues developed the quasispecies model (qs) for the population-based origin of RNAs representing the early genetic code. The Eigen idea is basically that a halo of mutants is generated by error-prone replication around the master fittest type which will behave similarly as a biological population. But almost from the start, very interesting and unexpected observations were made regarding competition versus co-operation which suggested more complex interactions. It thus became increasingly clear that although viruses functioned similar to biological species, their behavior was much more complex than the original theory could explain, especially adaptation without changing the consensus involving minority populations. With respect to the origin of natural codes, meaning, and code-use in interactions (communication), it also became clear that individual fittest type-based mechanisms were likewise unable to explain the origin of natural codes such as the genetic code with their context-and consortia-dependence (pragmatic nature). This, instead, required the participation of groups of agents competent in the code and able to edit code because natural codes do not code themselves. Three lines of inquiry, experimental virology, quasispecies theory, and the study of natural codes converged to indicate that consortia of cooperative RNA agents such as viruses must be involved in the fitness of RNA and its involvement in communication, i.e., code-competent interactions. We called this co-operative form quasispecies consortia (qs-c). They are the essential agents that constitute the possibility of evolution of biological group identity. Finally, the basic interactional motifs for the emergence of group identity, communication, and cooperation-together with its opposing functions-are explained by the ''Gangen'' hypothesis.

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“…Nowadays, viruses are considered ubiquitous and ecologically important members of aquatic communities influencing biogeochemical cycles, community composition and horizontal gene transfer (18,24,38,42). The use of transmission electron microscopy (TEM) for investigating aquatic viruses were followed by the epifluorescence microscopy (EFM) combined with the development of a variety of highly fluorescent nucleic acid dyes.…”

Section: Introductionmentioning

confidence: 99%

Virioplankton Abundance in Trophic Gradients of an Upwelling Field

Pereira¹,

Granato²,

Figueiredo³

et al. 2009

Braz. J. Microbiol.

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This work correlates time series of biological and physical variables to the marine viruses across trophic gradients within Arraial do Cabo upwelling system, Southeast of Brazil. The objective is to investigate the major controlling factors of virioplankton dynamics among different water masses. It was used an in situ and ex situ flow cytometry for accessing the plankton community. Viruses were highly correlated to bacteria and phytoplankton, but although the lack of direct correlation with physicals, upwelling turned out to be the main contributing factor to the highest values of viral abundance and virus:bacterial ratio.Our data suggest that the lowest temperature of upwelled South Atlantic Central Waters would help to maintain a high viral abundance and higher temperatures of Coastal and Tropical Waters might be another ecological niche allowing the co-existence.

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Are viruses driving microbial diversification and diversity?

Cited by 550 publications

References 107 publications

Bridging the Gap between Knowing and Modeling Viruses in Marine Systems—An Upcoming Frontier

Bridging the Gap between Knowing and Modeling Viruses in Marine Systems—An Upcoming Frontier

When Competing Viruses Unify: Evolution, Conservation, and Plasticity of Genetic Identities

Virioplankton Abundance in Trophic Gradients of an Upwelling Field

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