![]() ![]() To investigate the role of UBA868 in the ocean, the team used a combination of genomic analysis methods, including single-cell genomics, community metagenomics, metatranscriptomics and single-cell activity measurements. This finding refutes the previously held assumption that only autotrophic microorganisms (that can use CO 2 as a carbon source) and heterotrophic microorganisms (that rely on organic carbon sources) are responsible for regulating the carbon cycle. This means that it can both fix carbon from CO 2 using the energy generated by oxidizing sulfur compounds and take up organic substances and use them for energy production" explains Federico Baltar. UBA868 plays a significant role in the oxidation of sulfur compounds and the fixation of carbon dioxide, thus contributing significantly to the energy balance in the deep sea. UBA868: Mixotrophic energy driving force in ecosystems Dissolved sulfur compounds are also converted by bacteria and returned to the material cycle. In this way, they play a major role in the fixation and cycling of carbon. They extract organic material, for example from phytoplankton and zooplankton, transform it and make it available again to the ecosystem as nutrients. ![]() These microorganisms contribute significantly to the biogeochemical cycles. It forms the largest habitat on Earth and is home to the largest number of microorganisms. ![]() The deep sea, the marine layer at depths of 200 meters and more, accounts for about 90 percent of the world's ocean volume. ![]()
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