Microbes in Mariana Forearc Offer Clues to Earth’s Earliest Life
Researchers discovered microbial communities thriving in ultra-alkaline deep-sea mud volcanoes with pH 12, among the highest known on Earth.
Using lipid biomarkers, they identified methane- and sulfate-metabolizing microbes.
First author Palash Kumawat of the Geosciences Department at the University of Bremen and his colleagues used lipid biomarker analyses to decipher the survival strategies of the microbes in this harsh ecosystem.
The high pH value of 12 is especially challenging for deep-sea life; this is one of the highest known values so far in ecosystems.
In order to detect life at all, the researchers had to resort to special methods of trace analysis.
No direct quotes available in the text.
Author summary: Microbes thrive in ultra-alkaline deep-sea mud volcanoes.
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