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Citation for Study 15522

Citation title: "Cophylogenetic interactions between marine viruses and eukaryotic picophytoplankton.".

Study name: "Cophylogenetic interactions between marine viruses and eukaryotic picophytoplankton.".

This study is part of submission 15522 (Status: Published).

Citation

Bellec L., Clerissi C., Edern R., Foulon E., Simon N., Grimsley N., & Desdevises Y. 2014. Cophylogenetic interactions between marine viruses and eukaryotic picophytoplankton. BMC Evolutionary Biology, In press.

Authors

• Bellec L.
• Clerissi C.
• Edern R.
• Foulon E.
• Simon N.
• Grimsley N.
• Desdevises Y. (submitter) +33468887313

Abstract

Background Numerous studies have investigated cospeciation (or cophylogeny) in various host-symbiont systems, and different patterns were inferred, from strict cospeciation where symbiont phylogeny mirrors host phylogeny, to complete absence of correspondence between trees. The degree of cospeciation is generally linked to the level of host specificity in the symbiont species and the opportunity they have to switch hosts. In this study, we investigated cophylogeny for the first time in a microalgae-virus association in the open sea, where symbionts are believed to be highly host-specific but have wide opportunities to switch hosts. We studied prasinovirus-Mamiellales associations using 51 different viral strains infecting 22 host strains, selected from the characterisation and experimental testing of the specificities of 313 virus strains on 26 host strains. Results All virus strains were restricted to their host genus, and most were species-specific, but some of them were able to infect different host species within a genus. Phylogenetic trees were reconstructed for viruses and their hosts, and their congruence was assessed based on these trees and the specificity data using different cophylogenetic methods, a topology-based approach, Jane, and a global congruence method, ParaFit. We found significant congruence between virus and host trees, but with a putatively complex evolutionary history. Conclusions Mechanisms other than true cospeciation, such as host-switching, might explain a part of the data. It has been observed in a previous study on the same taxa that the genomic divergence between host pairs is larger than between their viruses. It implies that if cospeciation predominates in this algae-virus system, this would support the hypothesis that prasinoviruses evolve more slowly than their microalgal hosts, whereas host switching would imply that these viruses speciated more recently than the divergence of their host genera.

Keywords

Cophylogeny, Prasinovirus, Phycodnaviridae, Mamiellale, Chlorophyta, Specificity

External links

About this resource

• Canonical resource URI: http://purl.org/phylo/treebase/phylows/study/TB2:S15522
• Other versions: Nexus NeXML
• Show BibTeX reference

  		@ARTICLE{TreeBASE2Ref22982,
  	 author = {Laure  Bellec and Camille  Clerissi and Roseline  Edern and E:lodie  Foulon and Nathalie  Simon and Nigel  Grimsley and Yves  Desdevises},
  	 title = {Cophylogenetic interactions between marine viruses and eukaryotic picophytoplankton.},
  	 year = {2014},
  	 keywords = {Cophylogeny, Prasinovirus, Phycodnaviridae, Mamiellale, Chlorophyta, Specificity},
  	 doi = {},
  	 url = {http://},
  	 pmid = {},
  	 journal = {BMC Evolutionary Biology},
  	 volume = {In press},
  	 number = {},
  	 pages = {},
  	 abstract = {Background
  Numerous studies have investigated cospeciation (or cophylogeny) in various host-symbiont systems, and different patterns were inferred, from strict cospeciation where symbiont phylogeny mirrors host phylogeny, to complete absence of correspondence between trees. The degree of cospeciation is generally linked to the level of host specificity in the symbiont species and the opportunity they have to switch hosts. In this study, we investigated cophylogeny for the first time in a microalgae-virus association in the open sea, where symbionts are believed to be highly host-specific but have wide opportunities to switch hosts. We studied prasinovirus-Mamiellales associations using 51 different viral strains infecting 22 host strains, selected from the characterisation and experimental testing of the specificities of 313 virus strains on 26 host strains.
  Results
  All virus strains were restricted to their host genus, and most were species-specific, but some of them were able to infect different host species within a genus. Phylogenetic trees were reconstructed for viruses and their hosts, and their congruence was assessed based on these trees and the specificity data using different cophylogenetic methods, a topology-based approach, Jane, and a global congruence method, ParaFit. We found significant congruence between virus and host trees, but with a putatively complex evolutionary history.
  Conclusions
  Mechanisms other than true cospeciation, such as host-switching, might explain a part of the data. It has been observed in a previous study on the same taxa that the genomic divergence between host pairs is larger than between their viruses. It implies that if cospeciation predominates in this algae-virus system, this would support the hypothesis that prasinoviruses evolve more slowly than their microalgal hosts, whereas host switching would imply that these viruses speciated more recently than the divergence of their host genera.
  }
  }
  		

• Show RIS reference

  		TY  - JOUR
  ID  - 22982
  AU  - Bellec,Laure 
  AU  - Clerissi,Camille 
  AU  - Edern,Roseline 
  AU  - Foulon,E:lodie 
  AU  - Simon,Nathalie 
  AU  - Grimsley,Nigel 
  AU  - Desdevises,Yves 
  T1  - Cophylogenetic interactions between marine viruses and eukaryotic picophytoplankton.
  PY  - 2014
  KW  - Cophylogeny
  KW  - Prasinovirus
  KW  - Phycodnaviridae
  KW  - Mamiellale
  KW  - Chlorophyta
  KW  - Specificity
  UR  - http://dx.doi.org/
  N2  - Background
  Numerous studies have investigated cospeciation (or cophylogeny) in various host-symbiont systems, and different patterns were inferred, from strict cospeciation where symbiont phylogeny mirrors host phylogeny, to complete absence of correspondence between trees. The degree of cospeciation is generally linked to the level of host specificity in the symbiont species and the opportunity they have to switch hosts. In this study, we investigated cophylogeny for the first time in a microalgae-virus association in the open sea, where symbionts are believed to be highly host-specific but have wide opportunities to switch hosts. We studied prasinovirus-Mamiellales associations using 51 different viral strains infecting 22 host strains, selected from the characterisation and experimental testing of the specificities of 313 virus strains on 26 host strains.
  Results
  All virus strains were restricted to their host genus, and most were species-specific, but some of them were able to infect different host species within a genus. Phylogenetic trees were reconstructed for viruses and their hosts, and their congruence was assessed based on these trees and the specificity data using different cophylogenetic methods, a topology-based approach, Jane, and a global congruence method, ParaFit. We found significant congruence between virus and host trees, but with a putatively complex evolutionary history.
  Conclusions
  Mechanisms other than true cospeciation, such as host-switching, might explain a part of the data. It has been observed in a previous study on the same taxa that the genomic divergence between host pairs is larger than between their viruses. It implies that if cospeciation predominates in this algae-virus system, this would support the hypothesis that prasinoviruses evolve more slowly than their microalgal hosts, whereas host switching would imply that these viruses speciated more recently than the divergence of their host genera.
  
  L3  - 
  JF  - BMC Evolutionary Biology
  VL  - In press
  IS  - 
  ER  -