Cargando…

Long-term mitigation of drought changes the functional potential and life-strategies of the forest soil microbiome involved in organic matter decomposition

Climate change can alter the flow of nutrients and energy through terrestrial ecosystems. Using an inverse climate change field experiment in the central European Alps, we explored how long-term irrigation of a naturally drought-stressed pine forest altered the metabolic potential of the soil microb...

Descripción completa

Detalles Bibliográficos
Autores principales: Hartmann, Martin, Herzog, Claude, Brunner, Ivano, Stierli, Beat, Meyer, Folker, Buchmann, Nina, Frey, Beat
Formato: Online Artículo Texto
Lenguaje:English
Publicado: Frontiers Media S.A. 2023
Materias:
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC10570739/
https://www.ncbi.nlm.nih.gov/pubmed/37840720
http://dx.doi.org/10.3389/fmicb.2023.1267270
_version_ 1785119836894920704
author Hartmann, Martin
Herzog, Claude
Brunner, Ivano
Stierli, Beat
Meyer, Folker
Buchmann, Nina
Frey, Beat
author_facet Hartmann, Martin
Herzog, Claude
Brunner, Ivano
Stierli, Beat
Meyer, Folker
Buchmann, Nina
Frey, Beat
author_sort Hartmann, Martin
collection PubMed
description Climate change can alter the flow of nutrients and energy through terrestrial ecosystems. Using an inverse climate change field experiment in the central European Alps, we explored how long-term irrigation of a naturally drought-stressed pine forest altered the metabolic potential of the soil microbiome and its ability to decompose lignocellulolytic compounds as a critical ecosystem function. Drought mitigation by a decade of irrigation stimulated profound changes in the functional capacity encoded in the soil microbiome, revealing alterations in carbon and nitrogen metabolism as well as regulatory processes protecting microorganisms from starvation and desiccation. Despite the structural and functional shifts from oligotrophic to copiotrophic microbial lifestyles under irrigation and the observation that different microbial taxa were involved in the degradation of cellulose and lignin as determined by a time-series stable-isotope probing incubation experiment with (13)C-labeled substrates, degradation rates of these compounds were not affected by different water availabilities. These findings provide new insights into the impact of precipitation changes on the soil microbiome and associated ecosystem functioning in a drought-prone pine forest and will help to improve our understanding of alterations in biogeochemical cycling under a changing climate.
format Online
Article
Text
id pubmed-10570739
institution National Center for Biotechnology Information
language English
publishDate 2023
publisher Frontiers Media S.A.
record_format MEDLINE/PubMed
spelling pubmed-105707392023-10-14 Long-term mitigation of drought changes the functional potential and life-strategies of the forest soil microbiome involved in organic matter decomposition Hartmann, Martin Herzog, Claude Brunner, Ivano Stierli, Beat Meyer, Folker Buchmann, Nina Frey, Beat Front Microbiol Microbiology Climate change can alter the flow of nutrients and energy through terrestrial ecosystems. Using an inverse climate change field experiment in the central European Alps, we explored how long-term irrigation of a naturally drought-stressed pine forest altered the metabolic potential of the soil microbiome and its ability to decompose lignocellulolytic compounds as a critical ecosystem function. Drought mitigation by a decade of irrigation stimulated profound changes in the functional capacity encoded in the soil microbiome, revealing alterations in carbon and nitrogen metabolism as well as regulatory processes protecting microorganisms from starvation and desiccation. Despite the structural and functional shifts from oligotrophic to copiotrophic microbial lifestyles under irrigation and the observation that different microbial taxa were involved in the degradation of cellulose and lignin as determined by a time-series stable-isotope probing incubation experiment with (13)C-labeled substrates, degradation rates of these compounds were not affected by different water availabilities. These findings provide new insights into the impact of precipitation changes on the soil microbiome and associated ecosystem functioning in a drought-prone pine forest and will help to improve our understanding of alterations in biogeochemical cycling under a changing climate. Frontiers Media S.A. 2023-09-29 /pmc/articles/PMC10570739/ /pubmed/37840720 http://dx.doi.org/10.3389/fmicb.2023.1267270 Text en Copyright © 2023 Hartmann, Herzog, Brunner, Stierli, Meyer, Buchmann and Frey. https://creativecommons.org/licenses/by/4.0/This is an open-access article distributed under the terms of the Creative Commons Attribution License (CC BY). The use, distribution or reproduction in other forums is permitted, provided the original author(s) and the copyright owner(s) are credited and that the original publication in this journal is cited, in accordance with accepted academic practice. No use, distribution or reproduction is permitted which does not comply with these terms.
spellingShingle Microbiology
Hartmann, Martin
Herzog, Claude
Brunner, Ivano
Stierli, Beat
Meyer, Folker
Buchmann, Nina
Frey, Beat
Long-term mitigation of drought changes the functional potential and life-strategies of the forest soil microbiome involved in organic matter decomposition
title Long-term mitigation of drought changes the functional potential and life-strategies of the forest soil microbiome involved in organic matter decomposition
title_full Long-term mitigation of drought changes the functional potential and life-strategies of the forest soil microbiome involved in organic matter decomposition
title_fullStr Long-term mitigation of drought changes the functional potential and life-strategies of the forest soil microbiome involved in organic matter decomposition
title_full_unstemmed Long-term mitigation of drought changes the functional potential and life-strategies of the forest soil microbiome involved in organic matter decomposition
title_short Long-term mitigation of drought changes the functional potential and life-strategies of the forest soil microbiome involved in organic matter decomposition
title_sort long-term mitigation of drought changes the functional potential and life-strategies of the forest soil microbiome involved in organic matter decomposition
topic Microbiology
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC10570739/
https://www.ncbi.nlm.nih.gov/pubmed/37840720
http://dx.doi.org/10.3389/fmicb.2023.1267270
work_keys_str_mv AT hartmannmartin longtermmitigationofdroughtchangesthefunctionalpotentialandlifestrategiesoftheforestsoilmicrobiomeinvolvedinorganicmatterdecomposition
AT herzogclaude longtermmitigationofdroughtchangesthefunctionalpotentialandlifestrategiesoftheforestsoilmicrobiomeinvolvedinorganicmatterdecomposition
AT brunnerivano longtermmitigationofdroughtchangesthefunctionalpotentialandlifestrategiesoftheforestsoilmicrobiomeinvolvedinorganicmatterdecomposition
AT stierlibeat longtermmitigationofdroughtchangesthefunctionalpotentialandlifestrategiesoftheforestsoilmicrobiomeinvolvedinorganicmatterdecomposition
AT meyerfolker longtermmitigationofdroughtchangesthefunctionalpotentialandlifestrategiesoftheforestsoilmicrobiomeinvolvedinorganicmatterdecomposition
AT buchmannnina longtermmitigationofdroughtchangesthefunctionalpotentialandlifestrategiesoftheforestsoilmicrobiomeinvolvedinorganicmatterdecomposition
AT freybeat longtermmitigationofdroughtchangesthefunctionalpotentialandlifestrategiesoftheforestsoilmicrobiomeinvolvedinorganicmatterdecomposition