Soil warming increases the number of growing bacterial taxa but not their growth rates
Soil microorganisms control the fate of soil organic carbon. Warming may accelerate their activities putting large carbon stocks at risk of decomposition. Existing knowledge about microbial responses to warming is based on community-level measurements, leaving the underlying mechanisms unexplored an...
Published in: | Science Advances |
---|---|
Main Authors: | , , , , , , , , , , |
Format: | Article in Journal/Newspaper |
Language: | English |
Published: |
American Association for the Advancement of Science (AAAS)
2024
|
Subjects: | |
Online Access: | http://dx.doi.org/10.1126/sciadv.adk6295 https://www.science.org/doi/pdf/10.1126/sciadv.adk6295 |
id |
craaas:10.1126/sciadv.adk6295 |
---|---|
record_format |
openpolar |
spelling |
craaas:10.1126/sciadv.adk6295 2024-06-23T07:57:02+00:00 Soil warming increases the number of growing bacterial taxa but not their growth rates Metze, Dennis Schnecker, Jörg de Carlan, Coline Le Noir Bhattarai, Biplabi Verbruggen, Erik Ostonen, Ivika Janssens, Ivan A. Sigurdsson, Bjarni D. Hausmann, Bela Kaiser, Christina Richter, Andreas 2024 http://dx.doi.org/10.1126/sciadv.adk6295 https://www.science.org/doi/pdf/10.1126/sciadv.adk6295 en eng American Association for the Advancement of Science (AAAS) Science Advances volume 10, issue 8 ISSN 2375-2548 journal-article 2024 craaas https://doi.org/10.1126/sciadv.adk6295 2024-05-30T08:05:44Z Soil microorganisms control the fate of soil organic carbon. Warming may accelerate their activities putting large carbon stocks at risk of decomposition. Existing knowledge about microbial responses to warming is based on community-level measurements, leaving the underlying mechanisms unexplored and hindering predictions. In a long-term soil warming experiment in a Subarctic grassland, we investigated how active populations of bacteria and archaea responded to elevated soil temperatures (+6°C) and the influence of plant roots, by measuring taxon-specific growth rates using quantitative stable isotope probing and 18 O water vapor equilibration. Contrary to prior assumptions, increased community growth was associated with a greater number of active bacterial taxa rather than generally faster-growing populations. We also found that root presence enhanced bacterial growth at ambient temperatures but not at elevated temperatures, indicating a shift in plant-microbe interactions. Our results, thus, reveal a mechanism of how soil bacteria respond to warming that cannot be inferred from community-level measurements. Article in Journal/Newspaper Subarctic AAAS Resource Center (American Association for the Advancement of Science) Science Advances 10 8 |
institution |
Open Polar |
collection |
AAAS Resource Center (American Association for the Advancement of Science) |
op_collection_id |
craaas |
language |
English |
description |
Soil microorganisms control the fate of soil organic carbon. Warming may accelerate their activities putting large carbon stocks at risk of decomposition. Existing knowledge about microbial responses to warming is based on community-level measurements, leaving the underlying mechanisms unexplored and hindering predictions. In a long-term soil warming experiment in a Subarctic grassland, we investigated how active populations of bacteria and archaea responded to elevated soil temperatures (+6°C) and the influence of plant roots, by measuring taxon-specific growth rates using quantitative stable isotope probing and 18 O water vapor equilibration. Contrary to prior assumptions, increased community growth was associated with a greater number of active bacterial taxa rather than generally faster-growing populations. We also found that root presence enhanced bacterial growth at ambient temperatures but not at elevated temperatures, indicating a shift in plant-microbe interactions. Our results, thus, reveal a mechanism of how soil bacteria respond to warming that cannot be inferred from community-level measurements. |
format |
Article in Journal/Newspaper |
author |
Metze, Dennis Schnecker, Jörg de Carlan, Coline Le Noir Bhattarai, Biplabi Verbruggen, Erik Ostonen, Ivika Janssens, Ivan A. Sigurdsson, Bjarni D. Hausmann, Bela Kaiser, Christina Richter, Andreas |
spellingShingle |
Metze, Dennis Schnecker, Jörg de Carlan, Coline Le Noir Bhattarai, Biplabi Verbruggen, Erik Ostonen, Ivika Janssens, Ivan A. Sigurdsson, Bjarni D. Hausmann, Bela Kaiser, Christina Richter, Andreas Soil warming increases the number of growing bacterial taxa but not their growth rates |
author_facet |
Metze, Dennis Schnecker, Jörg de Carlan, Coline Le Noir Bhattarai, Biplabi Verbruggen, Erik Ostonen, Ivika Janssens, Ivan A. Sigurdsson, Bjarni D. Hausmann, Bela Kaiser, Christina Richter, Andreas |
author_sort |
Metze, Dennis |
title |
Soil warming increases the number of growing bacterial taxa but not their growth rates |
title_short |
Soil warming increases the number of growing bacterial taxa but not their growth rates |
title_full |
Soil warming increases the number of growing bacterial taxa but not their growth rates |
title_fullStr |
Soil warming increases the number of growing bacterial taxa but not their growth rates |
title_full_unstemmed |
Soil warming increases the number of growing bacterial taxa but not their growth rates |
title_sort |
soil warming increases the number of growing bacterial taxa but not their growth rates |
publisher |
American Association for the Advancement of Science (AAAS) |
publishDate |
2024 |
url |
http://dx.doi.org/10.1126/sciadv.adk6295 https://www.science.org/doi/pdf/10.1126/sciadv.adk6295 |
genre |
Subarctic |
genre_facet |
Subarctic |
op_source |
Science Advances volume 10, issue 8 ISSN 2375-2548 |
op_doi |
https://doi.org/10.1126/sciadv.adk6295 |
container_title |
Science Advances |
container_volume |
10 |
container_issue |
8 |
_version_ |
1802650475549425664 |