Thermal adaptation occurs in the respiration and growth of widely distributed bacteria
© 2022 John Wiley & Sons Ltd.
| Veröffentlicht in: | Global change biology. - 1999. - 28(2022), 8 vom: 28. Apr., Seite 2820-2829 |
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| Weitere Verfasser: | , , , , , , |
| Format: | Online-Aufsatz |
| Sprache: | English |
| Veröffentlicht: |
2022
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| Zugriff auf das übergeordnete Werk: | Global change biology |
| Schlagworte: | Journal Article Q10 Tmin bacteria temperature fluctuation thermal adaptation warming Soil Carbon 7440-44-0 |
| Zusammenfassung: | © 2022 John Wiley & Sons Ltd. Soil microbial respiration is an important factor in regulating carbon (C) exchange between the soil and atmosphere. Thermal adaptation of soil microorganisms will lead to a weakening of the positive feedback between climate warming and soil respiration. The thermal adaptation of microbial communities and fungal species has been proven. However, studies on the thermal adaptation of bacterial species, the most important decomposers in the soil, are still lacking. Here, we isolated six species of widely distributed dominant bacteria and studied the effects of constant warming and temperature fluctuations on those species. The results showed that constant warming caused a downregulation of respiratory temperature sensitivity (Q10 ) of the bacterial species, accompanied by an elevation of the minimum temperature (Tmin ) required for growth. Similar results were seen with the addition of temperature fluctuations, suggesting that both scenarios caused a significant thermal adaptation among the bacterial species. Fluctuating and increasing temperatures are considered an important component of future warming. Therefore, the inclusion of physiological responses of bacteria to these changes is essential to understand relationships between microbiota and temperature and enhance the prediction of global soil-atmosphere C feedbacks |
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| Beschreibung: | Date Completed 13.04.2022 Date Revised 13.04.2022 published: Print-Electronic Citation Status MEDLINE |
| ISSN: | 1365-2486 |
| DOI: | 10.1111/gcb.16102 |