ArticleScientific reports2018
The Fate of Lipid Biosignatures in a Mars-Analogue Sulfur Stream.
Article in Scientific reports, 2018. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 9 papers.
What it found
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The abstract states no effect estimate the extractor could read, or names no intervention and outcome on the map, so this paper lights no cell and moves no belief. It is still indexed, cited and linked below.
The trial behind it
Trials whose registry record cites this paper, or whose number appears in the abstract. A trial that started after this paper was published is citing it as background, not reporting it.
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Who cites it
9 citing papers in PubMed, 32 citations in OpenAlex.
- The salty tango of brine composition and UV photochemistry effects on Halobacterium salinarum cell envelope biosignature preservation.Communications biology · 2025Article
- An Overview of Lipid Biomarkers in Terrestrial Extreme Environments with Relevance for Mars Exploration.Astrobiology · 2023Review
- Sulfur Cycling as a Viable Metabolism under Simulated Noachian/Hesperian Chemistries.Life (Basel, Switzerland) · 2022Article
- Unveiling microbial preservation under hyperacidic and oxidizing conditions in the Oligocene Rio Tinto deposit.Scientific reports · 2021Article
- Article
- Organic Records of Early Life on Mars: The Role of Iron, Burial, and Kinetics on Preservation.Astrobiology · 2020Article
- Membrane Lipid Composition and Amino Acid Excretion Patterns ofLife (Basel, Switzerland) · 2019Article
- Recovery of Fatty Acids from Mineralogic Mars Analogs by TMAH Thermochemolysis for the Sample Analysis at Mars Wet Chemistry Experiment on the Curiosity Rover.Astrobiology · 2019Article
- Article
Corrections and comments
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Authors and funding
3 authors at 2 institutions in 2 countries.
Funding
No grant is acknowledged in the PubMed record.
Abstract
Past life on Mars will have generated organic remains that may be preserved in present day Mars rocks. The most recent period in the history of Mars that retained widespread surface waters was the late Noachian and early Hesperian and thus possessed the potential to sustain the most evolved and widely distributed martian life. Guidance for investigating late Noachian and early Hesperian rocks is provided by studies of analogous acidic and sulfur-rich environments on Earth. Here we report organic responses for an acid stream containing acidophilic organisms whose post-mortem remains are entombed in iron sulphates and iron oxides. We find that, if life was present in the Hesperian, martian organic records will comprise microbial lipids. Lipids are a potential sizeable reservoir of fossil carbon on Mars, and can be used to distinguish between different domains of life. Concentrations of lipids, and particularly alkanoic or "fatty" acids, are highest in goethite layers that reflect high water-to-rock ratios and thus a greater potential for habitability. Goethite can dehydrate to hematite, which is widespread on Mars. Mars missions should seek to detect fatty acids or their diagenetic products in the oxides and hydroxides of iron associated with sulphur-rich environments.
Identifiers
What OpenQuestion holds
Registered trials
Read under generation 80e0d062 · epoch 390. Bibliography from PubMed, PubMed Central and OpenAlex; grants from NIH RePORTER; trial links from ClinicalTrials.gov; estimates, votes and beliefs from the OpenQuestion graph.