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Virus or not? Phylogenetics of polydnaviruses and their wasp carriers.

Authors
  • Whitfield, James B
  • Asgari, Sassan
Type
Published Article
Journal
Journal of Insect Physiology
Publisher
Elsevier
Publication Date
May 01, 2003
Volume
49
Issue
5
Pages
397–405
Identifiers
PMID: 12770619
Source
Medline
License
Unknown

Abstract

Our current, still limited, understanding of the comparative biology and evolution of polydnaviruses (PDVs) is reviewed, especially in the context of the possible origins of these parasitoid viruses and of their coevolution with carrier wasps. A hypothetical scenario of evolution of PDVs from ascovirus (or ascovirus-like) ancestors is presented, with examples of apparent extant transitional forms. PDVs appear, in the case of bracoviruses, to show phylogenetic relationships that mirror those of their wasp carriers: with ichnoviruses, the picture is less clear. Ongoing sequencing studies of entire PDV genomes from diverse wasp species are likely to greatly contribute to our understanding of PDV evolution.

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