Full-length genome characterization of a novel mitovirus isolated from the root rot fungus Armillaria mellea

Erkmen, Sıla; Sahin, Ergin; Akata, Ilgaz

doi:10.1007/s11262-023-02041-8

Cited by 2 publications

(1 citation statement)

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“…An unclassified virus of Tymovirales (AoRV1) is reported here for the first time for the genus Armillaria. The existence of mitoviruses in Armillaria species has recently been demonstrated by several laboratories with a variant of AbMV1 (accession number ON875998, unpublished) deposited in GenBank and an AMV1-related sequence (OR349296) recently published (Erkmen et al, 2023). AbMV1 was the most (71.1%) prevalent virus in our collection, it was not detected in the study of Linnakoski et al (2021), nor was the rather rare virus from Tymovirales.…”

Section: Discussionmentioning

confidence: 58%

Decoding the RNA virome of the tree parasite Armillaria provides new insights into the viral community of soil‐borne fungi

Shamsi,

Heinzelmann,

Ulrich

et al. 2024

Environmental Microbiology

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The globally distributed basidiomycete genus Armillaria includes wood decomposers that can act as opportunistic parasites, causing deadly root rot on woody plants. To test whether RNA viruses are involved in this opportunistic behaviour, a large isolate collection of five Armillaria species collected over 40 years in Switzerland from trees, dead wood and soil was analysed. De novo assembly of RNA‐Seq data revealed 21 viruses, 14 of which belong to putative new species. Two dsRNA viruses and an unclassified Tymovirales are formally described for the first time for Armillaria. One mitovirus occurred with a high prevalence of 71.1%, while all other viruses were much less prevalent (0.6%–16.9%). About half of all viruses were found only in one fungal species, others occurred in 2–6 fungal species. Co‐infections of 2–7 viruses per isolate were not uncommon (34.9%), and most viruses persisted circulating within fungal populations for decades. Some viruses were related to viruses associated with other Armillaria species, supporting the hypothesis that virus transmission can occur between different fungal species. Although no specific correlation between viruses and the fungal trophic strategy was found, this study opens new insights into viral diversity hidden in the soil microbiome.

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Section: Discussionmentioning

confidence: 58%