Preprint Article Version 1 Preserved in Portico This version is not peer-reviewed

Mycoviruses Increase the Attractiveness of Fusarium graminearum for Fungivores and Suppress Production of the Mycotoxins Deoxynivalenol

Simon Schiwek
* ORCID logo ,
Matthäus Slonka
ORCID logo ,
Mohammad Alhussein
ORCID logo ,
Dennis Knierim
,
Paolo Margaria
,
Hanna Rose
,
Katja R. Richert-Pöggeler
,
Michael Rostás
ORCID logo ,
Petr Karlovsky
* ORCID logo
Version 1 : Received: 10 January 2024 / Approved: 11 January 2024 / Online: 11 January 2024 (14:16:33 CET)

A peer-reviewed article of this Preprint also exists.

Schiwek, S.; Slonka, M.; Alhussein, M.; Knierim, D.; Margaria, P.; Rose, H.; Richert-Pöggeler, K.R.; Rostás, M.; Karlovsky, P. Mycoviruses Increase the Attractiveness of Fusarium graminearum for Fungivores and Suppress Production of the Mycotoxin Deoxynivalenol. Toxins 2024, 16, 131. Schiwek, S.; Slonka, M.; Alhussein, M.; Knierim, D.; Margaria, P.; Rose, H.; Richert-Pöggeler, K.R.; Rostás, M.; Karlovsky, P. Mycoviruses Increase the Attractiveness of Fusarium graminearum for Fungivores and Suppress Production of the Mycotoxin Deoxynivalenol. Toxins 2024, 16, 131.

Abstract

RNA-viruses of the genera Ambivirus, Mitovirus, Sclerotimonavirus, and Partitivirus were found in a single isolate of Fusarium graminearum. The genomes of the mitovirus, sclerotimonavirus, and partitivirus were assigned to previously described viruses, whereas the ambivirus genome putatively represents a new species, named Fusarium graminearum ambivirus 1 (FgAV1). To investigate the effect of mycoviruses on the fungal phenotype, spontaneous loss of mycoviruses during meiosis and transmission of mycoviruses into a new strain by anastomosis were used to obtain isogenic F. graminearum strains with and without mycoviruses. Notable effects observed in mycovirus-harboring strains were (i) suppression of the synthesis of trichothecene mycotoxins and their precursor trichodiene, (ii) suppression of the synthesis of the defense compound aurofusarin, (iii) stimulation of the emission of 2-methyl-1-butanol and 3-methyl-1-butanol, and (iv) increased attractiveness of fungal mycelia for fungivorous collembolans. Increased attractiveness of mycovirus-infected filamentous fungi to animal predators opens new perspectives on the ecological implications of infection of fungi with viruses.

Keywords

mycovirus; Fusarium graminearum; trichothecenes; deoxynivalenol; aurofusarin; VOC; Collembola; fungivory; food preference; Folsomia candida

Subject

Biology and Life Sciences, Life Sciences

Copyright: This is an open access article distributed under the Creative Commons Attribution License which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.

Download PDF

Comments (0)

We encourage comments and feedback from a broad range of readers. See criteria for comments and our Diversity statement.

Leave a public comment
Send a private comment to the author(s)
* All users must log in before leaving a comment
Views 0
Downloads 0
Comments 0
Metrics 0
Get PDF Cite Share 0
Bookmark BibSonomy Mendeley Reddit Delicious
×
Alerts
Notify me about updates to this article or when a peer-reviewed version is published.
We use cookies on our website to ensure you get the best experience.
Read more about our cookies here.