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Methanogen strain M. barkeri Fusaro, which was was grown with acetate and methanol as substrates and with S2 as the sole source of nickel, iron, and sulfur., help differentiate between two competing hypotheses about the reduction in atmospheric methane billions of years ago.
The microorganisms in question are called methanogens, which are ancient life forms that still exist today. Methanogens are unique because they don’t use, often breaking down rocks and minerals to do so. During the process, the cells produce methane, also known as natural gas.had no oxygen, and the atmosphere at that time contained a lot more methane and hydrogen,” Eric Boyd, co-author of the study, said in a media statement.
However, the research contained in the new paper discovered that nickel-dependent methanogens need much less nickel to survive than previously thought. Their ability to accumulate nickel within themselves allows for survival even when nickel is scarce. To make these observations, Boyd’s team grew methanogens in environments with varying amounts of nickel, observing how they responded to the different conditions. By measuring how much methane the microbes produced, they were able to estimate how well the methanogens were growing and surviving. Using a variety of spectroscopic techniques, the team could identify how much nickel the cells stored.energy that was supporting life,” the scientist said.
While the scientific concepts and research process are extremely complex, Boyd said the larger implications of the work are quite simple, tying directly into the timeless questions of how the planet came to have a habitable environment for other life forms and ultimately humans.Return to normal operations at Mexico’s largest gold mine is expected to take several weeks, and Newmont vowed to update markets next week.
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