Abstract
Invasive fungal diseases represent a major threat to forest ecosystems worldwide. As the application of fungicides is often unfeasible and not a sustainable solution, only a few other control options are available, including biological control. In this context, the use of parasitic mycoviruses as biocontrol agents of fungal pathogens has recently gained particular attention. Since the 1990s, the Asian fungus Hymenoscyphus fraxineus has been causing lethal ash dieback across Europe. In the present study, we investigated the biocontrol potential of the mitovirus Hymenoscyphus fraxineus mitovirus 2 (HfMV2) previously identified in Japanese populations of the pathogen. HfMV2 could be successfully introduced via co-culturing into 16 of 105 HfMV2-free isolates. Infection with HfMV2 had contrasting effects on fungal growth in vitro, from cryptic to detrimental or beneficial. Virus-infected H. fraxineus isolates whose growth was reduced by HfMV2 showed overall a lower virulence on ash ( Fraxinus excelsior) saplings as compared with their isogenic HfMV2-free lines. The results suggest that mycoviruses exist in the native populations of H. fraxineus in Asia that have the potential for biological control of ash dieback in Europe. [Formula: see text] Copyright © 2024 The Author(s). This is an open access article distributed under the CC BY-NC-ND 4.0 International license .
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Claims 4
Claim · model-written summary
HfMV2 was introduced by co-culturing into 16 of 105 HfMV2-free Hymenoscyphus fraxineus isolates.
- Taxon
- Hymenoscyphus fraxineus
Hymenoscyphus fraxineuse0 - Treatment
- co-culturinge1
- Interactor
- HfMV2e1biocontrol_agent
- Outcome
- successfully introducede1
- Value
- 16 of 105e1
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“the Asian fungus Hymenoscyphus fraxineus has been causing lethal ash dieback across Europe”
e1“HfMV2 could be successfully introduced via co-culturing into 16 of 105 HfMV2-free isolates”
Claim · model-written summary
Infection with HfMV2 had contrasting in vitro effects on H. fraxineus growth, from cryptic to detrimental or beneficial.
- Taxon
- Hymenoscyphus fraxineusHymenoscyphus fraxineuse0
- Treatment
- Infection with HfMV2e1
- Interactor
- HfMV2e1biocontrol_agent
- Outcome
- fungal growthe1
- Direction
- contrasting effectse1
- Setting
- in vitroe1
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“the Asian fungus Hymenoscyphus fraxineus has been causing lethal ash dieback across Europe”
e1“Infection with HfMV2 had contrasting effects on fungal growth in vitro, from cryptic to detrimental or beneficial”
Claim · model-written summary
H. fraxineus isolates whose growth was reduced by HfMV2 showed lower virulence on ash (Fraxinus excelsior) saplings than their isogenic HfMV2-free lines.
- Taxon
- Fraxinus excelsior
Fraxinus excelsiore1 - Treatment
- Virus-infected H. fraxineus isolatese1
- Interactor
- H. fraxineusHymenoscyphus fraxineuse1pathogen
- Second interactor
- HfMV2e1biocontrol_agent
- Outcome
- virulencee1
- Direction
- lowere1
- Comparator
- isogenic HfMV2-free linese1
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e1“Virus-infected H. fraxineus isolates whose growth was reduced by HfMV2 showed overall a lower virulence on ash ( Fraxinus excelsior) saplings as compared with their isogenic HfMV2-free lines”
Claim · model-written summary
The authors conclude that mycoviruses in native Asian H. fraxineus populations have potential for biological control of ash dieback in Europe.
- Taxon
- H. fraxineusHymenoscyphus fraxineuse1
- Outcome
- potential for biological control of ash diebacke1
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e1“mycoviruses exist in the native populations of H. fraxineus in Asia that have the potential for biological control of ash dieback in Europe”