Soil fungi remain active and invest in storage compounds during drought independent of future climate conditions

20158 5 108260 2 327922 document 108260 s41467-024-54537-y.pdf application/pdf 2a1182a0af4cc057761d59cf12f2dcf5 MD5 1649186 2024-12-02 08:36:46 https://pure.iiasa.ac.at/id/eprint/20158/1/s41467-024-54537-y.pdf 20158 1 1 application/pdf text en public cc_by_4

s41467-024-54537-y.pdf

published 108266 2 327932 document 108266 lightbox.jpg image/png 7ed7e39964fa0fc5408843dd3eff8dff MD5 59964 2024-12-02 08:46:47 https://pure.iiasa.ac.at/id/eprint/20158/2/lightbox.jpg 20158 2 2 image/png other Thumbnails conversion from text to thumbnail_lightbox en public

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http://eprints.org/relation/isVersionOf https://pure.iiasa.ac.at/id/document/108260 http://eprints.org/relation/isVolatileVersionOf https://pure.iiasa.ac.at/id/document/108260 http://eprints.org/relation/isIndexCodesVersionOf https://pure.iiasa.ac.at/id/document/108260 archive 353 disk0/00/02/01/58 2024-12-02 08:38:40 2024-12-02 08:38:40 2024-12-02 08:38:40 article show Canarini A. Fuchslueger L. Schnecker J. Metze D. Nelson D.B. Kahmen A. Watzka M. Pötsch E.M. Schaumberger A. Bahn M. Richter A. 9018 Soil fungi remain active and invest in storage compounds during drought independent of future climate conditions pub ASA EM Microbial growth is central to soil carbon cycling. However, how microbial communities grow under climate change is still largely unexplored. Here we use a unique field experiment simulating future climate conditions (increased atmospheric CO2 and temperature) and drought concomitantly and investigate impacts on soil microbial activity. We trace 2H or 18O applied via water-vapor exchange into membrane (and storage) fatty acids or DNA, respectively, to assess community- and group-level adjustments in soil microbial physiology (replication, storage product synthesis, and carbon use efficiency). We show that, while bacterial growth decreases by half during drought, fungal growth remains stable, demonstrating a remarkable resistance against soil moisture changes. In addition, fungal investment into storage triglycerides increases more than five-fold under drought. Community-level carbon use efficiency (the balance between anabolism and catabolism) is unaffected by drought but decreases in future climate conditions, favoring catabolism. Our results highlight that accounting for different microbial growth strategies can foster our understanding of soil microbial contributions to carbon cycling and feedback on the climate system. 2024-11-26 published NPG doi:10.1038/s41467-024-54537-y 2922 public Nature Communications 15 1 e10410 TRUE 2041-1723 info:eu-repo/semantics/article