[Nature Communications Earth & Environment] Ferruginous conditions in the Precambrian oceans gave rise to ancient iron formations that contain the oldest recognized traces of life in the form of mineral […]
Metagenomics
![Effects of filtration method and sequencing platform on microbial abundance and community composition. Comparison of microbial abundance, sequencing performance, and taxonomic composition among Yellowstone hot spring samples processed using Sterivex, Supor, and polycarbonate (PC) filtration devices and analyzed by Illumina and Oxford Nanopore sequencing. Upper panels show absolute microbial abundance estimates (black bars) and sequence read lengths (red symbols). Lower panels depict species-level relative abundances of dominant bacterial and archaeal (red asterisk) taxa recovered from each sample. -- [biorxiv.org]](https://i0.wp.com/astrobiology.com/wp-content/uploads/2026/07/Differential-efficiency.png?resize=1200%2C708&ssl=1)
Posted inSample Return
Differential Efficiency Of Sampling Devices In The Measurement Of Microbial Diversity Of Yellowstone National Park Hot Springs
[biorxiv.org] Metagenomic characterization of low-biomass Yellowstone National Park (YNP) hot spring waters remains challenging because microbial recovery is influenced by filtration methodology, sample preservation, DNA extraction, and sequencing strategy.
![Deep-sea microbial sample processing. Detailed sample processing steps for HPG assimilating cells and total cell counts are denoted in grey and black arrows/squares, respectively. Processing steps and samples used for metagenomic sequencing are denoted in light-blue arrows and squares. “Whole sample” correspond to triplicate 50 ml aliquots, each filtered onto a 0.22 μm filter directly from the cryopreserved material, and then released with 200 μl of 0.025% (v/v) Tween 20 in PBS to be processed through MDA and DNA sequencing; “all cells” correspond to samples of cryopreserved material that were stained with a DNA dye, collected on a 0.22 μm filter, processed through the BONCAT labelling assay, and then sorted by flow cytometry, aiming to select events that presented the DNA dye; “BONCAT+” cell samples originated from the same material as ‘all cells’, but their sorting aimed for events that presented both the DNA dye and the fluorescent dye Alexa-Fluor 488 (attached to the HPG incorporated by the active cells). The selection of BONCAT+ cells was established for each sample based on the level of BONCAT background labelling to the microbial community when not exposed to HPG, or when fixed before being exposed to HPG (i.e. reflecting the adhesion of the fluorescent label to cells that did not incorporate HPG). -- [ISME Journal via PubMed]](https://i0.wp.com/astrobiology.com/wp-content/uploads/2026/07/Sample-Return.png?resize=1200%2C719&ssl=1)
Posted inSample Return
Sample Return: Minimizing Decompression And Warming During Deep Seawater Collection Increases Abundance And Activity Of Autochthonous Bacteria And Archaea
[ISME Journal via PubMed] The deep ocean hosts autochthonous pressure-adapted microorganisms that are unique to this environment, as well as allochthonous pressure-sensitive members transported from shallow depths by vertical advection […]
Posted inAstropharmacy / Biotechnology, Biochemistry & Organic Chemistry, Biogeochemical Cycles & Geobiology, Biophysics, Biosignatures & Paleobiology, Commercial & Private Sector, Genomics, Proteomics, Bioinformatics, Habitable Zones, Microbiology & Virology, Planetary Protection & Biosafety, Press Release, Sample Return
From Microbial Dark Matter To Living Library: New Biobank Decodes Survival Secrets Of Extreme Acid Mine Drainage Microbes
Editor’s note: If we aspire to mount expeditions to new worlds and then embrace the task of characterizing and quantifying whatever life forms we find, the ability to map and […]
Posted inAway Teams & Field Reports, Biophysics, Biosignatures & Paleobiology, Genomics, Proteomics, Bioinformatics, Microbiology & Virology, Origin & Evolution of Life, Panspermia, Press Release, Sample Return, Space Life Science, Tricorders & Sensors
Planetary Genomics: Basecamp Research Launches The Trillion Gene Atlas
Editor’s note: If we aspire to mount expeditions to new worlds and then embrace the task of characterizing and quantifying whatever life forms we find, the ability to map and […]
Posted inAI - Data - Apps - Cybernetics, Analog Studies, Arctic / Antarctic / Alpine, Away Teams & Field Reports, Biochemistry & Organic Chemistry, Biogeochemical Cycles & Geobiology, Biophysics, Biosignatures & Paleobiology, Caves, Craters, Mountains, Subsurface, Lava Tubes, Cryobiology, Desert Worlds, Extremeophiles and Extreme Environments, Fossils & Paleontology, Genomics, Proteomics, Bioinformatics, Habitable Zones, Icy Worlds, Mapping, Geodesy, Cartography, Bathymetry, Nomenclature, Systematics, Natural History, Status Report
Decoding Extremophiles: Insights From Bioinformatics, Machine Learning, And Data-driven Approaches
Life thrives in Earth’s most inhospitable environments, from boiling hydrothermal vents to hypersaline lakes and frozen polar deserts, thanks to the remarkable adaptations of extremophilic microorganisms.
Posted inAway Teams & Field Reports, Biochemistry & Organic Chemistry, Biosignatures & Paleobiology, Exploration Gear & Tech, Genomics, Proteomics, Bioinformatics, Planetary Protection & Biosafety, Press Release, Sample Return, Tricorders & Sensors, Water/Hycean Worlds & Oceanography
Tricorder Tech: A Simple Filter Swap Could Advance Marine eDNA Biomonitoring
Editor’s note: with recent speculation about the potential habitability of other worlds and understanding the processes whereby other biospheres arise and evolve, thought needs to be given to developing sensor […]
Posted inAway Teams & Field Reports, Biosignatures & Paleobiology, Extremeophiles and Extreme Environments, Genomics, Proteomics, Bioinformatics, Habitable Zones, Microbiology & Virology, Origin & Evolution of Life, Sample Return, Status Report
Redox distribution Of Asgard Archaea And Co-occurring Taxa In Microbial Mats From An Early Proterozoic Ecosystem Analog
Eukaryotes originated from the symbiosis of an Asgard archaeon, the alphaproteobacterial ancestor of mitochondria, and possibly additional bacterial contributions.
Posted inAway Teams & Field Reports, Biophysics, Biosignatures & Paleobiology, Extremeophiles and Extreme Environments, Genomics, Proteomics, Bioinformatics, Habitable Zones, Lava / magma ocean / Volcanic Worlds, Microbiology & Virology, Sample Return, Status Report
Amplicon And Metagenomic Data From Fumarole-associated Geothermal Features Of Hawai’i
The Hawaiian islands are among the most geologically and volcanically active places on Earth. While the Hawaiian Archipelago is known for its animal and plant diversity, much less is known […]
Posted inAtmospheres, Climate, Weather, Biogeochemical Cycles & Geobiology, Biosignatures & Paleobiology, Gaia - Planetary Perspectives, Genomics, Proteomics, Bioinformatics, Microbiology & Virology, Origin & Evolution of Life, Status Report
Recent Microbial Evolutionary Insights From Metagenomics
Microorganisms have profoundly shaped Earth’s biological and geological history, from the origins of oxygenic photosynthesis to present-day global biogeochemical cycles.