Viruses of fungi and oomycetes in the soil environment

FEMS Microbiology Ecology
Suvi SutelaEeva J Vainio

Abstract

Soils support a myriad of organisms hosting highly diverse viromes. In this minireview, we focus on viruses hosted by true fungi and oomycetes (members of Stamenopila, Chromalveolata) inhabiting bulk soil, rhizosphere and litter layer, and representing different ecological guilds including fungal saprotrophs, mycorrhizal fungi, mutualistic endophytes and pathogens. Viruses infecting fungi and oomycetes are characterized by persistent intracellular non-lytic lifestyles and transmission via spores and/or hyphal contacts. Almost all fungal and oomycete viruses have genomes composed of single stranded or double stranded RNA, and recent studies have revealed numerous novel viruses representing yet unclassified family-level groups. Depending on the virus-host combination, infections can be asymptomatic, beneficial or detrimental to the host. Thus, mycovirus infections may contribute to the multiplex interactions of hosts, therefore likely affecting the dynamics of fungal communities required for the functioning of soil ecosystems. However, the effects of fungal and oomycete viruses on soil ecological processes are still mostly unknown. Interestingly, new metagenomics data suggest an extensive level of horizontal virus transfer betwee...Continue Reading

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Citations

Aug 8, 2020·Frontiers in Microbiology·Leticia BotellaThomas Jung
Nov 8, 2020·Nature Communications·Shinji HondaNobuhiro Suzuki
Apr 3, 2021·Scientific Reports·Riikka LinnakoskiEeva J Vainio
Aug 5, 2021·Scientific Data·Vojtěch TláskalPetr Baldrian

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