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Area of Science:

  • Virology
  • Evolutionary Biology
  • Genomics

Background:

  • Multipartite viruses possess segmented genomes, with each segment enclosed in a separate capsid.
  • Independent transmission of segments necessitates their reunion within a host for viral replication.
  • The evolutionary advantages of this complex replication strategy remain largely debated.

Purpose of the Study:

  • To provide a comprehensive review of all known multipartite viruses.
  • To discuss the potential origins and evolutionary relationships of different multipartite virus groups.
  • To explore the advantages and adaptive significance of multipartitism.

Main Methods:

  • Literature review and synthesis of existing data on multipartite viruses.
  • Analysis of viral interactions and gene-sharing networks.
  • Discussion of evolutionary mechanisms and systems biology approaches.

Main Results:

  • An exhaustive summary of described multipartite viruses is presented.
  • Ubiquitous viral interactions are proposed as a precursor to multipartitism.
  • The dynamical and opportunistic nature of multipartitism facilitates adaptive responses.

Conclusions:

  • Multipartitism is an adaptive mechanism enabling rapid responses to environmental changes.
  • Viral interactions and gene sharing are key to understanding multipartite virus evolution.
  • Systems biology offers promising avenues for future research into multipartitism.