Climate change impacts on soil biology

Canarini, Alberto; Fuchslueger, Lucia; Joly, François‐Xavier; Richter, Andreas

doi:10.1016/b978-0-12-822974-3.00244-5

Cited by 2 publications

(1 citation statement)

References 38 publications

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“…Because soil microbial communities respond sensitively to climate change, shifts in microbial physiology can cause large repercussions on global C and nutrient cycles (6)(7)(8). Elevated CO2 (eCO2) induces mostly indirect effects on soil microbes by stimulating primary productivity (9) and thus increasing C resources available for heterotrophic soil microbes, leading to enhanced microbial growth and decomposition rates (10)(11)(12). Warming can increase plant productivity, but also directly stimulate microbial physiological activity, decreasing microbial CUE and accelerating soil carbon losses (6,7,13).…”

Section: Introductionmentioning

confidence: 99%

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

Canarini,

Fuchslueger,

Schnecker

et al. 2023

Preprint

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Microbial growth is central to soil carbon cycling. However, how microbial communities grow under climate change is still largely unexplored. In an experiment simulating future climate conditions (increased atmospheric CO2 and temperature) and drought, we traced 2H or 18O applied via water-vapor exchange into fatty acids or DNA, respectively, allowing to measure community- and group-level adjustments in soil microbial physiology (replication, storage product synthesis, and carbon use efficiency, CUE). We show, that while overall community-level growth decreased by half during drought, fungal growth remained stable demonstrating an astonishing resistance of fungal activity against soil moisture changes. In addition, fungal investment into storage triglycerides increased more than five-fold under drought. CUE (the balance between anabolism and catabolism) was unaffected by drought but decreased in future climate conditions. Our results highlight that accounting for different growth strategies can foster our understanding of soil microbial contribution to C cycling and feedback to climate change.

show abstract

Section: Introductionmentioning

confidence: 99%

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

Canarini,

Fuchslueger,

Schnecker

et al. 2023

Preprint

Self Cite

View full text Add to dashboard Cite

show abstract

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

Canarini,

Fuchslueger,

Schnecker

et al. 2024

Nat Commun

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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.

show abstract

Climate change impacts on soil biology

Cited by 2 publications

References 38 publications

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

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

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

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