Cable bacteria generate a firewall against euxinia in seasonally hypoxic basins
-
- Dorina Seitaj
- Department of Ecosystem Studies, Royal Netherlands Institute for Sea Research, 4401 NT Yerseke, The Netherlands;
-
- Regina Schauer
- Center for Microbiology, Department of Bioscience, Aarhus University, 8000 Aarhus, Denmark;
-
- Fatimah Sulu-Gambari
- Department of Earth Sciences–Geochemistry, Faculty of Geosciences, Utrecht University, 3584 CD Utrecht, The Netherlands;
-
- Silvia Hidalgo-Martinez
- Department of Ecosystem Studies, Royal Netherlands Institute for Sea Research, 4401 NT Yerseke, The Netherlands;
-
- Sairah Y. Malkin
- Department of Analytical, Environmental, and Geochemistry, Vrije Universiteit Brussel, 1050 Brussels, Belgium
-
- Laurine D. W. Burdorf
- Department of Ecosystem Studies, Royal Netherlands Institute for Sea Research, 4401 NT Yerseke, The Netherlands;
-
- Caroline P. Slomp
- Department of Earth Sciences–Geochemistry, Faculty of Geosciences, Utrecht University, 3584 CD Utrecht, The Netherlands;
-
- Filip J. R. Meysman
- Department of Ecosystem Studies, Royal Netherlands Institute for Sea Research, 4401 NT Yerseke, The Netherlands;
説明
<jats:title>Significance</jats:title><jats:p>Seasonal hypoxia is increasing in coastal areas worldwide, as more nutrients are delivered to the coastal ocean and water temperatures are rising due to climate change. Hypoxia reaches a particularly harmful stage when sulfide, which is highly toxic for marine life, is released to the bottom water. Here, we document a natural microbial mechanism that counteracts the release of free sulfide, thus preventing the most adverse stage of seasonal hypoxia. Electricity-generating cable bacteria produce a large pool of oxidized sedimentary iron minerals, which efficiently bind free sulfide. As cable bacteria are likely abundant in many seasonally hypoxic basins worldwide, their “firewall” mechanism may be widespread.</jats:p>
収録刊行物
-
- Proceedings of the National Academy of Sciences
-
Proceedings of the National Academy of Sciences 112 (43), 13278-13283, 2015-10-07
Proceedings of the National Academy of Sciences