Scientists unearth a clue to the molecular mechanisms involved in N2O reduction by deep-sea hydrothermal vent bacteria.
O) is the third most potent greenhouse gas after carbon dioxide and methane. It can also be oxidized by physical processes to form ozone-depleting substances. Atmospheric concentrations of NO in the biosphere is microbial denitrification.
"We hypothesize that this feature may contribute to efficient energy metabolisms in deep-sea hydrothermal environments where alternative electron acceptors are occasionally depleted," said Robert M. Morris, Associate Professor at the University of Washington. Jiro Tsuchiya, the first author and a JSPS research fellow DC2 at Hokkaido University, and colleagues conducted a statistical analysis of time series data."Our findings suggest that the denitrification geneis negatively regulated by transcriptional regulators that typically function as transcriptional activators in response to environmental changes.
Scientists discover off-axis, high-temperature deep-sea hydrothermal vents along a portion of the northern East Pacific Rise that are hotter and cover more area than any other hydrothermal vents ... The hydrothermal vent fluids from the Gorda Ridge spreading center in the northeast Pacific Ocean create a biological hub of activity in the deep sea. There, in the dark ocean, a unique food web ...
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