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Perchlorates on Mars: Occurrence and implications for putative life on the Red Planet

Urheber*innen

Rzymski,  Piotr
External Organizations;

Losiak,  Anna
External Organizations;

Heinz,  Jacob
External Organizations;

Szukalska,  Marta
External Organizations;

Florek,  Ewa
External Organizations;

Poniedziałek,  Barbara
External Organizations;

Kaczmarek,  Łukasz
External Organizations;

/persons/resource/dirksm

Schulze-Makuch,  Dirk
3.7 Geomicrobiology, 3.0 Geochemistry, Departments, GFZ Publication Database, Deutsches GeoForschungsZentrum;

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Volltexte (frei zugänglich)

5027584.pdf
(Verlagsversion), 805KB

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Zitation

Rzymski, P., Losiak, A., Heinz, J., Szukalska, M., Florek, E., Poniedziałek, B., Kaczmarek, Ł., Schulze-Makuch, D. (2024): Perchlorates on Mars: Occurrence and implications for putative life on the Red Planet. - Icarus, 421, 116246.
https://doi.org/10.1016/j.icarus.2024.116246


Zitierlink: https://gfzpublic.gfz-potsdam.de/pubman/item/item_5027584
Zusammenfassung
The discovery of perchlorate in martian regolith, ubiquitously distributed at levels far exceeding those noted on Earth, raises challenges for in situ resource utilization and life-supporting systems. However, this challenge can be overcome by organisms with extreme tolerance to various stressors, characterization of the mechanisms supporting such features, and their subsequent employment in biological systems using genetic engineering and synthetic biology. Using such organisms could be an excellent complement to the physical and chemical technologies of perchlorate removal. Here, we review the research devoted to perchlorates on Mars, their types, spatial variability, age, and production mechanisms. We also characterize the perchlorate toxicity and the organisms (photosynthetic and chemoautotrophic bacteria as well as heterotrophic microorganisms and microinvertebrates) evidenced to withstand exposure to high perchlorate concentrations. The mechanisms behind this tolerance are also discussed in the context of future research prospects and their use in Mars exploration.