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, but it also serves as an archive for microbial colonization of the subsurface, new research has found.
Scientists at the Friedrich Schiller University Jena examined drill cores from a depth of up to 300 metres from the Thuringian Basin to gain insights into the biomass in solid rocks and the metabolic status of rock-dwelling microbiomes. Their ultimate goal was to decipher theSign Up for the Suppliers Digest“Based on previous research results, we assumed that the high calcium content in limestone could preserve the DNA of microorganisms, similar to dental calculus in mummies or skeletons.
“We have been able to detect genetic information from past microbial communities—so-called paleomes—in three rock samples,” Kirsten Küsel, co-author of the study, said. “These give us information about which metabolic performances played a role when these microorganisms were still alive.”is particularly suitable because its properties favour the long-term preservation of genetic information.
“Determining the age of endolithic DNA is the key to the geomicrobiological history of the subsurface,” Küsel said.because little is known about them as most of the earth’s microbial biomass is hidden at depths of up to five kilometres below the continental surface, where the microorganisms also colonize solid rock.
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