First detection of mycoviruses in Gnomoniopsis castaneae suggests a putative horizontal gene transfer event between negative-sense and double-strand RNA viruses.

Autor: Ferilli F; University of Torino, Department of Agricultural, Forest and Food Sciences (DISAFA), Largo Paolo Braccini 2, 10095, Grugliasco, Torino, Italy; Currently an EFSA Staff Member in the Environment, Plants & Ecotoxicology Unit, European Food Safety Authority (EFSA), Via Carlo Magno 1A, 43126, Parma, Italy., Lione G; University of Torino, Department of Agricultural, Forest and Food Sciences (DISAFA), Largo Paolo Braccini 2, 10095, Grugliasco, Torino, Italy., Gonthier P; University of Torino, Department of Agricultural, Forest and Food Sciences (DISAFA), Largo Paolo Braccini 2, 10095, Grugliasco, Torino, Italy., Turina M; Institute for Sustainable Plant Protection, National Research Council of Italy, Strada Delle Cacce, 73, Torino, 10135, Italy., Forgia M; Institute for Sustainable Plant Protection, National Research Council of Italy, Strada Delle Cacce, 73, Torino, 10135, Italy. Electronic address: marco.forgia@ipsp.cnr.it.
Jazyk: angličtina
Zdroj: Virology [Virology] 2024 Jun; Vol. 594, pp. 110057. Date of Electronic Publication: 2024 Mar 20.
DOI: 10.1016/j.virol.2024.110057
Abstrakt: Gnomoniopsis castaneae is an ascomycetous fungus mainly known as a major pathogen of chestnut causing nut rots, although it is often found as an endophyte in chestnut tissues. To date, no virus has been reported as associated with to this fungus. Here, a collection of G. castaneae isolates from several European countries was screened to detect mycoviruses infecting the fungus: for the first time we report the identification and prevalence of mitovirus Gnomoniopsis castaneae mitovirus 1 (GcMV1) and the chrysovirus Gnomoniopsis castaneae chrysovirus 1 (GcCV1). Interestingly, we provide evidence supporting a putative horizontal gene transfer between members of the phyla Negarnaviricota and Duplornaviricota: a small putative protein of unknown function encoded on the RNA3 of GcCV1 (Chrysoviridae) has homologs in the genome of viruses of the family Mymonaviridae.
Competing Interests: Declaration of competing interest The authors declare that they have no known competing financial interests or personal relationships that could have appeared to influence the work reported in this paper.
(Copyright © 2024 Elsevier Inc. All rights reserved.)
Databáze: MEDLINE
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