ArticleFrontiers in microbiology2015
Revealing the unexplored fungal communities in deep groundwater of crystalline bedrock fracture zones in Olkiluoto, Finland.
Article in Frontiers in microbiology, 2015. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 27 papers.
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27 citing papers in PubMed, 97 citations in OpenAlex.
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- Microbial ecology of the deep terrestrial subsurface.The ISME journal · 2024Review
- Bark-inhabiting fungal communities of European chestnut undergo substantial alteration by canker formation following chestnut blight infection.Frontiers in microbiology · 2023Article
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- Rock Surface Fungi in Deep Continental Biosphere-Exploration of Microbial Community Formation with Subsurface In Situ Biofilm Trap.Microorganisms · 2020Article
- Under the karst: detecting hidden subterranean assemblages using eDNA metabarcoding in the caves of Christmas Island, Australia.Scientific reports · 2020Article
- Niche partitioning of microbial communities at an ancient vitrified hillfort: implications for vitrified radioactive waste disposal.International biodeterioration & biodegradation · 2020Article
- Ultradeep Microbial Communities at 4.4 km within Crystalline Bedrock: Implications for Habitability in a Planetary Context.Life (Basel, Switzerland) · 2020Article
- Inferences of environmental and biotic effects on patterns of eukaryotic alpha and beta diversity for the spring systems of Ash Meadows, Nevada.Oecologia · 2019Article
- Paleo-Rock-Hosted Life on Earth and the Search on Mars: A Review and Strategy for Exploration.Astrobiology · 2019Review
- Fungi in aquatic ecosystems.Nature reviews. Microbiology · 2019Review
- One-Step Process for Environment-Friendly Preparation of Agar Oligosaccharides FromFrontiers in microbiology · 2019Article
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- The Intestinal Mycobiota in Wild Zebrafish Comprises Mainly Dothideomycetes While Saccharomycetes Predominate in Their Laboratory-Reared Counterparts.Frontiers in microbiology · 2018Article
- Depth and Dissolved Organic Carbon Shape Microbial Communities in Surface Influenced but Not Ancient Saline Terrestrial Aquifers.Frontiers in microbiology · 2018Article
- Anaerobic consortia of fungi and sulfate reducing bacteria in deep granite fractures.Nature communications · 2017Article
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Authors and funding
7 authors at 1 institution in 1 country.
Funding
No grant is acknowledged in the PubMed record.
Abstract
The diversity and functional role of fungi, one of the ecologically most important groups of eukaryotic microorganisms, remains largely unknown in deep biosphere environments. In this study we investigated fungal communities in packer-isolated bedrock fractures in Olkiluoto, Finland at depths ranging from 296 to 798 m below surface level. DNA- and cDNA-based high-throughput amplicon sequencing analysis of the fungal internal transcribed spacer (ITS) gene markers was used to examine the total fungal diversity and to identify the active members in deep fracture zones at different depths. Results showed that fungi were present in fracture zones at all depths and fungal diversity was higher than expected. Most of the observed fungal sequences belonged to the phylum Ascomycota. Phyla Basidiomycota and Chytridiomycota were only represented as a minor part of the fungal community. Dominating fungal classes in the deep bedrock aquifers were Sordariomycetes, Eurotiomycetes, and Dothideomycetes from the Ascomycota phylum and classes Microbotryomycetes and Tremellomycetes from the Basidiomycota phylum, which are the most frequently detected fungal taxa reported also from deep sea environments. In addition some fungal sequences represented potentially novel fungal species. Active fungi were detected in most of the fracture zones, which proves that fungi are able to maintain cellular activity in these oligotrophic conditions. Possible roles of fungi and their origin in deep bedrock groundwater can only be speculated in the light of current knowledge but some species may be specifically adapted to deep subsurface environment and may play important roles in the utilization and recycling of nutrients and thus sustaining the deep subsurface microbial community.
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