Differential responses of carbon-degrading enzyme activities to warming : Implications for soil respiration
© 2018 John Wiley & Sons Ltd.
| Publié dans: | Global change biology. - 1999. - 24(2018), 10 vom: 21. Okt., Seite 4816-4826 |
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| Auteur principal: | |
| Autres auteurs: | , , , , , , , , , , , |
| Format: | Article en ligne |
| Langue: | English |
| Publié: |
2018
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| Accès à la collection: | Global change biology |
| Sujets: | Journal Article Meta-Analysis Research Support, Non-U.S. Gov't Research Support, U.S. Gov't, Non-P.H.S. cellulase activity decomposition extracellular enzyme activity global warming ligninase activity recalcitrant carbon pool plus... |
| Résumé: | © 2018 John Wiley & Sons Ltd. Extracellular enzymes catalyze rate-limiting steps in soil organic matter decomposition, and their activities (EEAs) play a key role in determining soil respiration (SR). Both EEAs and SR are highly sensitive to temperature, but their responses to climate warming remain poorly understood. Here, we present a meta-analysis on the response of soil cellulase and ligninase activities and SR to warming, synthesizing data from 56 studies. We found that warming significantly enhanced ligninase activity by 21.4% but had no effect on cellulase activity. Increases in ligninase activity were positively correlated with changes in SR, while no such relationship was found for cellulase. The warming response of ligninase activity was more closely related to the responses of SR than a wide range of environmental and experimental methodological factors. Furthermore, warming effects on ligninase activity increased with experiment duration. These results suggest that soil microorganisms sustain long-term increases in SR with warming by gradually increasing the degradation of the recalcitrant carbon pool |
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| Description: | Date Completed 24.01.2019 Date Revised 24.01.2019 published: Print-Electronic Citation Status MEDLINE |
| ISSN: | 1365-2486 |
| DOI: | 10.1111/gcb.14394 |