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Soil propagule banks of ectomycorrhizal fungi associated with Larix cajanderi above the treeline in the Siberian Arctic
Microbial symbionts are essential for plant niche expansion into novel habitats. Dormant propagules of ectomycorrhizal (EM) fungi are thought to play an important role in seedling establishment in invasion fronts; however, propagule bank communities above the treeline are poorly understood in the Eu...
Autores principales: | , , , |
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Formato: | Online Artículo Texto |
Lenguaje: | English |
Publicado: |
The Mycological Society of Japan
2022
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Materias: | |
Acceso en línea: | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC10042316/ https://www.ncbi.nlm.nih.gov/pubmed/37090475 http://dx.doi.org/10.47371/mycosci.2022.05.002 |
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author | Miyamoto, Yumiko Maximov, Trofim C. Kononov, Alexander Sugimoto, Atsuko |
author_facet | Miyamoto, Yumiko Maximov, Trofim C. Kononov, Alexander Sugimoto, Atsuko |
author_sort | Miyamoto, Yumiko |
collection | PubMed |
description | Microbial symbionts are essential for plant niche expansion into novel habitats. Dormant propagules of ectomycorrhizal (EM) fungi are thought to play an important role in seedling establishment in invasion fronts; however, propagule bank communities above the treeline are poorly understood in the Eurasian Arctic, where treelines are expected to advance under rapid climate change. To investigate the availability of EM fungal propagules, we collected 100 soil samples from Arctic tundra sites and applied bioassay experiments using Larix cajanderi as bait seedlings. We detected 11 EM fungal operational taxonomic units (OTUs) by obtaining entire ITS regions. Suillus clintonianus was the most frequently observed OTU, followed by Cenococcum geophilum and Sebacinales OTU1. Three Suillus and one Rhizopogon species were detected in the bioassay seedlings, indicating the availability of Larix-specific suilloid spores at least 30 km from the contemporary treeline. Spores of S. clintonianus and S. spectabilis remained infective after preservation for 14 mo and heat treatment at 60 °C, implying the durability of the spores. Long-distance dispersal capability and spore resistance to adverse conditions may represent ecological strategies employed by suilloid fungi to quickly associate with emerging seedlings of compatible hosts in treeless habitats. |
format | Online Article Text |
id | pubmed-10042316 |
institution | National Center for Biotechnology Information |
language | English |
publishDate | 2022 |
publisher | The Mycological Society of Japan |
record_format | MEDLINE/PubMed |
spelling | pubmed-100423162023-04-20 Soil propagule banks of ectomycorrhizal fungi associated with Larix cajanderi above the treeline in the Siberian Arctic Miyamoto, Yumiko Maximov, Trofim C. Kononov, Alexander Sugimoto, Atsuko Mycoscience Full Paper Microbial symbionts are essential for plant niche expansion into novel habitats. Dormant propagules of ectomycorrhizal (EM) fungi are thought to play an important role in seedling establishment in invasion fronts; however, propagule bank communities above the treeline are poorly understood in the Eurasian Arctic, where treelines are expected to advance under rapid climate change. To investigate the availability of EM fungal propagules, we collected 100 soil samples from Arctic tundra sites and applied bioassay experiments using Larix cajanderi as bait seedlings. We detected 11 EM fungal operational taxonomic units (OTUs) by obtaining entire ITS regions. Suillus clintonianus was the most frequently observed OTU, followed by Cenococcum geophilum and Sebacinales OTU1. Three Suillus and one Rhizopogon species were detected in the bioassay seedlings, indicating the availability of Larix-specific suilloid spores at least 30 km from the contemporary treeline. Spores of S. clintonianus and S. spectabilis remained infective after preservation for 14 mo and heat treatment at 60 °C, implying the durability of the spores. Long-distance dispersal capability and spore resistance to adverse conditions may represent ecological strategies employed by suilloid fungi to quickly associate with emerging seedlings of compatible hosts in treeless habitats. The Mycological Society of Japan 2022-07-31 /pmc/articles/PMC10042316/ /pubmed/37090475 http://dx.doi.org/10.47371/mycosci.2022.05.002 Text en 2022, by The Mycological Society of Japan https://creativecommons.org/licenses/by-nc-nd/4.0/This is an open-access paper distributed under the terms of the Creative Commons Attribution-NonCommercial-NoDerivative 4.0 international license (CC BY-NC-ND 4.0: https://creativecommons.org/licenses/by-nc-nd/4.0/). |
spellingShingle | Full Paper Miyamoto, Yumiko Maximov, Trofim C. Kononov, Alexander Sugimoto, Atsuko Soil propagule banks of ectomycorrhizal fungi associated with Larix cajanderi above the treeline in the Siberian Arctic |
title | Soil propagule banks of ectomycorrhizal
fungi associated with Larix cajanderi above the
treeline in the Siberian Arctic |
title_full | Soil propagule banks of ectomycorrhizal
fungi associated with Larix cajanderi above the
treeline in the Siberian Arctic |
title_fullStr | Soil propagule banks of ectomycorrhizal
fungi associated with Larix cajanderi above the
treeline in the Siberian Arctic |
title_full_unstemmed | Soil propagule banks of ectomycorrhizal
fungi associated with Larix cajanderi above the
treeline in the Siberian Arctic |
title_short | Soil propagule banks of ectomycorrhizal
fungi associated with Larix cajanderi above the
treeline in the Siberian Arctic |
title_sort | soil propagule banks of ectomycorrhizal
fungi associated with larix cajanderi above the
treeline in the siberian arctic |
topic | Full Paper |
url | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC10042316/ https://www.ncbi.nlm.nih.gov/pubmed/37090475 http://dx.doi.org/10.47371/mycosci.2022.05.002 |
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