Fig. 7: Genus-level taxonomic tree constructed from 1.5 g (three replicates) of ~2800-year-old microbialite samples, collected from a shallow, alkaline lake where they remain submerged.
From: Fragmented deoxyribonucleic acid could be extractable from Mars’s surface rocks
The analysis compares microbiome diversity between non-irradiated samples (top) and samples subjected to a radiation dose of 10.45 MGy (bottom), simulating 136 million years of exposure on Mars.
