Mycoviruses in the Aspergilli

Anne D. Van Diepeningen, J. Varga, Rolf F. Hoekstra, Alfons J M Debets

Research output: Chapter in Book/Report/Conference proceedingChapter

15 Citations (Scopus)

Abstract

This chapter contains both an overview of what is known about mycoviruses and of which Aspergillus species were found to be infected, as well as two detailed studies in the mycovirus dynamics in two different Aspergillus species. We start by giving a general review of viruses infecting fungi: these mycoviruses can contain either singlestranded (ss) or double-stranded RNA or double stranded DNA genomes. So far at least nine virus families have been identified that infect fungal species. For a long time these mycoviruses were generally considered to be cryptic, but nowadays more evidence points to the fact that on close examination most infections are deleterious to their hosts. Next, an overview is given of mycoviruses identified in Aspergillus species: most of the mycoviruses were identified in asexual species, but several sexual Aspergillus species also proved to be infected. Then two special cases of mycovirus infections and their dynamics in Aspergillus species are discussed: the natural infection with double-stranded RNA mycoviruses of approximately ten percent of asexual A. niger and other black Aspergilli and the artificial infection of both sexually and asexually reproducing Emericella nidulans (anamorph: A. nidulans). For these species horizontal and vertical transmission of mycoviruses was studied as well as the effect of heterokaryon incompatibility and sexual recombination on this transmission. The effect of virus infection on different fitness traits was quantified using isogenic virus free and infected lines. A population model based on transfer rates and fitness costs is presented to predict the stability of the mycovirus infections. We discuss the possibility of interspecies virus transfer between Aspergillus species and further relatives. Finally, we conclude with the possibilities the genomics era has for research of mycoviruses and their hosts.

Original languageEnglish
Title of host publicationAspergillus in the Genomic Era
PublisherWageningen Academic Publishers
Pages133-176
Number of pages44
ISBN (Print)9789086860654
DOIs
Publication statusPublished - 2008

Fingerprint

Aspergillus
fitness
Niger
incompatibility
Viruses
Infection
examination
Double-Stranded RNA
costs
evidence
Emericella
Fungal Viruses
Virus Diseases
Genomics
Genetic Recombination
Fungi
Genome
Costs and Cost Analysis
time
DNA

Keywords

  • Double-stranded RNA
  • Dynamics
  • Mycoviruses

ASJC Scopus subject areas

  • Social Sciences(all)
  • Immunology and Microbiology(all)

Cite this

Van Diepeningen, A. D., Varga, J., Hoekstra, R. F., & Debets, A. J. M. (2008). Mycoviruses in the Aspergilli. In Aspergillus in the Genomic Era (pp. 133-176). Wageningen Academic Publishers. https://doi.org/10.3920/978-90-8686-635-9

Mycoviruses in the Aspergilli. / Van Diepeningen, Anne D.; Varga, J.; Hoekstra, Rolf F.; Debets, Alfons J M.

Aspergillus in the Genomic Era. Wageningen Academic Publishers, 2008. p. 133-176.

Research output: Chapter in Book/Report/Conference proceedingChapter

Van Diepeningen, AD, Varga, J, Hoekstra, RF & Debets, AJM 2008, Mycoviruses in the Aspergilli. in Aspergillus in the Genomic Era. Wageningen Academic Publishers, pp. 133-176. https://doi.org/10.3920/978-90-8686-635-9
Van Diepeningen AD, Varga J, Hoekstra RF, Debets AJM. Mycoviruses in the Aspergilli. In Aspergillus in the Genomic Era. Wageningen Academic Publishers. 2008. p. 133-176 https://doi.org/10.3920/978-90-8686-635-9
Van Diepeningen, Anne D. ; Varga, J. ; Hoekstra, Rolf F. ; Debets, Alfons J M. / Mycoviruses in the Aspergilli. Aspergillus in the Genomic Era. Wageningen Academic Publishers, 2008. pp. 133-176
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