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- Title
Interactions between temperature and energy supply drive microbial communities in hydrothermal sediment.
- Authors
Lagostina, Lorenzo; Frandsen, Søs; MacGregor, Barbara J.; Glombitza, Clemens; Deng, Longhui; Fiskal, Annika; Li, Jiaqi; Doll, Mechthild; Geilert, Sonja; Schmidt, Mark; Scholz, Florian; Bernasconi, Stefano Michele; Jørgensen, Bo Barker; Hensen, Christian; Teske, Andreas; Lever, Mark Alexander
- Abstract
Temperature and bioavailable energy control the distribution of life on Earth, and interact with each other due to the dependency of biological energy requirements on temperature. Here we analyze how temperature-energy interactions structure sediment microbial communities in two hydrothermally active areas of Guaymas Basin. Sites from one area experience advective input of thermogenically produced electron donors by seepage from deeper layers, whereas sites from the other area are diffusion-dominated and electron donor-depleted. In both locations, Archaea dominate at temperatures >45 °C and Bacteria at temperatures <10 °C. Yet, at the phylum level and below, there are clear differences. Hot seep sites have high proportions of typical hydrothermal vent and hot spring taxa. By contrast, high-temperature sites without seepage harbor mainly novel taxa belonging to phyla that are widespread in cold subseafloor sediment. Our results suggest that in hydrothermal sediments temperature determines domain-level dominance, whereas temperature-energy interactions structure microbial communities at the phylum-level and below. Lagostina et al. show that relative abundances of Bacteria and Archaea in sediments of Guaymas Basin, Gulf of California, are controlled by temperature, while energy flux explains microbial community structure at the phylum-level and below. Hot diffusion-dominated and energy-depleted sediments are dominated by taxa with relatives in cold subseafloor sediments, while hot sediments with high energy supply from fluid seepage are dominated by taxa also found at hydrothermal vents and in hot springs.
- Subjects
GULF of California (Mexico); MICROBIAL communities; POWER resources; HYDROTHERMAL deposits; BIOENERGETICS
- Publication
Communications Biology, 2021, Vol 4, Issue 1, p1
- ISSN
2399-3642
- Publication type
Article
- DOI
10.1038/s42003-021-02507-1