Mycobiont contribution to tundra plant acquisition of permafrost‐derived nitrogen
Summary As Arctic soils warm, thawed permafrost releases nitrogen (N) that could stimulate plant productivity and thus offset soil carbon losses from tundra ecosystems. Although mycorrhizal fungi could facilitate plant access to permafrost‐derived N, their exploration capacity beyond host plant root...
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Online Access: | http://dx.doi.org/10.1111/nph.16235 https://onlinelibrary.wiley.com/doi/pdf/10.1111/nph.16235 https://onlinelibrary.wiley.com/doi/full-xml/10.1111/nph.16235 https://nph.onlinelibrary.wiley.com/doi/am-pdf/10.1111/nph.16235 https://nph.onlinelibrary.wiley.com/doi/pdf/10.1111/nph.16235 |
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crwiley:10.1111/nph.16235 2024-10-13T14:05:27+00:00 Mycobiont contribution to tundra plant acquisition of permafrost‐derived nitrogen Hewitt, Rebecca E. DeVan, M. Rae Lagutina, Irina V. Genet, Helene McGuire, A. David Taylor, D. Lee Mack, Michelle C. National Science Foundation 2020 http://dx.doi.org/10.1111/nph.16235 https://onlinelibrary.wiley.com/doi/pdf/10.1111/nph.16235 https://onlinelibrary.wiley.com/doi/full-xml/10.1111/nph.16235 https://nph.onlinelibrary.wiley.com/doi/am-pdf/10.1111/nph.16235 https://nph.onlinelibrary.wiley.com/doi/pdf/10.1111/nph.16235 en eng Wiley http://onlinelibrary.wiley.com/termsAndConditions#am http://onlinelibrary.wiley.com/termsAndConditions#vor New Phytologist volume 226, issue 1, page 126-141 ISSN 0028-646X 1469-8137 journal-article 2020 crwiley https://doi.org/10.1111/nph.16235 2024-09-17T04:50:18Z Summary As Arctic soils warm, thawed permafrost releases nitrogen (N) that could stimulate plant productivity and thus offset soil carbon losses from tundra ecosystems. Although mycorrhizal fungi could facilitate plant access to permafrost‐derived N, their exploration capacity beyond host plant root systems into deep, cold active layer soils adjacent to the permafrost table is unknown. We characterized root‐associated fungi (RAF) that colonized ericoid (ERM) and ectomycorrhizal (ECM) shrub roots and occurred below the maximum rooting depth in permafrost thaw‐front soil in tussock and shrub tundra communities. We explored the relationships between root and thaw front fungal composition and plant uptake of a 15 N tracer applied at the permafrost boundary. We show that ERM and ECM shrubs associate with RAF at the thaw front providing evidence for potential mycelial connectivity between roots and the permafrost boundary. Among shrubs and tundra communities, RAF connectivity to the thaw boundary was ubiquitous. The occurrence of particular RAF in both roots and thaw front soil was positively correlated with 15 N recovered in shrub biomass Taxon‐specific RAF associations could be a mechanism for the vertical redistribution of deep, permafrost‐derived nutrients, which may alleviate N limitation and stimulate productivity in warming tundra. Article in Journal/Newspaper Arctic permafrost Tundra Wiley Online Library Arctic New Phytologist 226 1 126 141 |
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Wiley Online Library |
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English |
description |
Summary As Arctic soils warm, thawed permafrost releases nitrogen (N) that could stimulate plant productivity and thus offset soil carbon losses from tundra ecosystems. Although mycorrhizal fungi could facilitate plant access to permafrost‐derived N, their exploration capacity beyond host plant root systems into deep, cold active layer soils adjacent to the permafrost table is unknown. We characterized root‐associated fungi (RAF) that colonized ericoid (ERM) and ectomycorrhizal (ECM) shrub roots and occurred below the maximum rooting depth in permafrost thaw‐front soil in tussock and shrub tundra communities. We explored the relationships between root and thaw front fungal composition and plant uptake of a 15 N tracer applied at the permafrost boundary. We show that ERM and ECM shrubs associate with RAF at the thaw front providing evidence for potential mycelial connectivity between roots and the permafrost boundary. Among shrubs and tundra communities, RAF connectivity to the thaw boundary was ubiquitous. The occurrence of particular RAF in both roots and thaw front soil was positively correlated with 15 N recovered in shrub biomass Taxon‐specific RAF associations could be a mechanism for the vertical redistribution of deep, permafrost‐derived nutrients, which may alleviate N limitation and stimulate productivity in warming tundra. |
author2 |
National Science Foundation |
format |
Article in Journal/Newspaper |
author |
Hewitt, Rebecca E. DeVan, M. Rae Lagutina, Irina V. Genet, Helene McGuire, A. David Taylor, D. Lee Mack, Michelle C. |
spellingShingle |
Hewitt, Rebecca E. DeVan, M. Rae Lagutina, Irina V. Genet, Helene McGuire, A. David Taylor, D. Lee Mack, Michelle C. Mycobiont contribution to tundra plant acquisition of permafrost‐derived nitrogen |
author_facet |
Hewitt, Rebecca E. DeVan, M. Rae Lagutina, Irina V. Genet, Helene McGuire, A. David Taylor, D. Lee Mack, Michelle C. |
author_sort |
Hewitt, Rebecca E. |
title |
Mycobiont contribution to tundra plant acquisition of permafrost‐derived nitrogen |
title_short |
Mycobiont contribution to tundra plant acquisition of permafrost‐derived nitrogen |
title_full |
Mycobiont contribution to tundra plant acquisition of permafrost‐derived nitrogen |
title_fullStr |
Mycobiont contribution to tundra plant acquisition of permafrost‐derived nitrogen |
title_full_unstemmed |
Mycobiont contribution to tundra plant acquisition of permafrost‐derived nitrogen |
title_sort |
mycobiont contribution to tundra plant acquisition of permafrost‐derived nitrogen |
publisher |
Wiley |
publishDate |
2020 |
url |
http://dx.doi.org/10.1111/nph.16235 https://onlinelibrary.wiley.com/doi/pdf/10.1111/nph.16235 https://onlinelibrary.wiley.com/doi/full-xml/10.1111/nph.16235 https://nph.onlinelibrary.wiley.com/doi/am-pdf/10.1111/nph.16235 https://nph.onlinelibrary.wiley.com/doi/pdf/10.1111/nph.16235 |
geographic |
Arctic |
geographic_facet |
Arctic |
genre |
Arctic permafrost Tundra |
genre_facet |
Arctic permafrost Tundra |
op_source |
New Phytologist volume 226, issue 1, page 126-141 ISSN 0028-646X 1469-8137 |
op_rights |
http://onlinelibrary.wiley.com/termsAndConditions#am http://onlinelibrary.wiley.com/termsAndConditions#vor |
op_doi |
https://doi.org/10.1111/nph.16235 |
container_title |
New Phytologist |
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226 |
container_issue |
1 |
container_start_page |
126 |
op_container_end_page |
141 |
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1812811551780896768 |