[Journal of Microscopy] Far-red light (FRL) cyanobacteria occupy spectrally filtered habitats where visible wavelengths are depleted but far-red radiation persists.
cyanobacteria
Posted inBiosignatures & Paleobiology
Orbital Biosignature Assay: Pyramid Lake in Bloom
[NASA] The OLI-2 (Operational Land Imager-2) on the Landsat 9 satellite acquired this natural-color image of the bloom in October 2024. One day earlier, the Pyramid Lake Paiute Tribe noted […]
Posted inExtremeophiles and Extreme Environments
Comparative Genomics Of Space-resilient Chroococcidiopsis Cyanobacteria Reveals A Core Genetic Repertoire Supporting Extreme Tolerance Towards Desert And Non-Earth Conditions
[FEMS Microbes] Desert cyanobacteria of the Chroococcidiopsis genus, due to their remarkable desiccation and radiation tolerance, are considered model candidates in the field of astrobiology.
Posted inMicrobiology & Virology
Bacteria Form Herds To Survive Predators, Offering Fresh Insight Into Earth’s Carbon Cycle
[Queen Mary University of London] Researchers at Queen Mary University of London have discovered that tiny photosynthetic bacteria band together into protective “herds” when attacked by predators – a survival […]
Posted inBiochemistry & Organic Chemistry
Discovery: Oxygenic Photosynthesis Is Possible With Only One Photosystem
[Ludwig-Maximilians-Universität München] LMU researchers demonstrate that oxygenic photosynthesis can occur with only a single photosystem, overturning a fundamental principle of biology.
Posted inAtmospheres, Climate, Weather, Away Teams & Field Reports, Biosignatures & Paleobiology, Caves, Craters, Mountains, Subsurface, Lava Tubes, Impact events, Mapping, Geodesy, Cartography, Bathymetry, Microbiology & Virology, Origin & Evolution of Life, Press Release, Sample Return
Asteroid Impact Site Reveals Possible Traces Of Early Life
A discovery by a South Korean research team suggests that impact-generated lakes may have fostered early oxygen-producing life.
Posted inBiochemistry & Organic Chemistry, Biophysics, Biosignatures & Paleobiology, Genomics, Proteomics, Bioinformatics, Plant Biology, Status Report
Novel Raman Signature Evidences An Unknown Cyanobacterial Pigment
From the first botanical characterization of cyanobacteria about two centuries ago to contemporary studies, only two categories of extracellular UV-screening pigments have been considered: scytonemin which is very well described […]
Posted inAnalog Studies, Arctic / Antarctic / Alpine, Biogeochemical Cycles & Geobiology, Biosignatures & Paleobiology, Cryobiology, Desert Worlds, Exploration Gear & Tech, Extremeophiles and Extreme Environments, Habitable Zones, Icy Worlds, Mapping, Geodesy, Cartography, Bathymetry, Microbiology & Virology, Planetary Protection & Biosafety, Sample Return, Status Report, Tricorders & Sensors
Dew And Frost Do Not Serve As Water Sources For Rock-dwelling Organisms In The Dry Valleys Of Antarctica
Rock-dwelling chlorolichens and cyanobacteria provide most of the total biomass of the ice-free zone of Antarctica, i.e., the McMurdo Dry Valleys (MDV), and yet, the water sources of MDV are […]
Posted inAtmospheres, Climate, Weather, Biochemistry & Organic Chemistry, Biogeochemical Cycles & Geobiology, Biosignatures & Paleobiology, Habitable Zones, Origin & Evolution of Life, Status Report
The Hydrogen, Methane And Ammonia Biosphere On Early Earth
Current paradigms for the origin and evolutions of life and the environment on early Earth have been based on the premises that carbon dioxide (CO2) and nitrogen gas (N2) were […]
Posted inAnalog Studies, Atmospheres, Climate, Weather, Biochemistry & Organic Chemistry, Biogeochemical Cycles & Geobiology, Biosignatures & Paleobiology, Caves, Craters, Mountains, Subsurface, Lava Tubes, Cryobiology, Desert Worlds, Exploration Gear & Tech, Extremeophiles and Extreme Environments, Genomics, Proteomics, Bioinformatics, Habitable Zones, Robotics/Rovers/UAVs, Sample Return, Status Report, Tricorders & Sensors
The Lipidome of a Mars Analog Poly-Extreme Community in Atacama Halite Endolith: Chemotaxonomy, Lipid Adaptation, and Implications for the Search for Extraplanetary Biosignatures
We analyzed the lipidome of the endolithic community in halite nodules from Salar Grande in the hyperarid Atacama Desert, which is considered an analog for martian subsurface environments.