Results 1 to 10 of about 3,020 (115)

Biomarkers on the Icy Jovian Moons: Can Europa Also Provide Insights into Life’s Origin? [PDF]

Life
Within the payloads of JUICE and Europa Clipper, there are instruments suitable for the search of specific biosignatures that can diagnose life tracks in two ways.
Julian Chela-Flores, Doron Lancet, Roy Yaniv   +2 more
doaj   +2 more sources

Multi-technique characterization of iron reduction by an Antarctic Shewanella: an analog system for putative Martian biosignature identification [PDF]

Applied and Environmental Microbiology
Microbes from terrestrial extreme environments enable testing of biosignature production in conditions relevant to astrobiological targets. Mars, which was likely more conducive to life during early warmer and wetter epochs, has inspired missions that ...
Jacob M. C. Shaffer, Elizabeth C. Sklute, Robert M. Samples, Lesley-Ann Giddings, Abigail Jarratt, Katherine Mateos, M. Darby Dyar, Peter A. Lee, Kenneth J. T. Livi, Jill A. Mikucki   +9 more
doaj   +2 more sources

Energy-ordered resource stratification as an agnostic signature of life [PDF]

Nature Communications
The search for extraterrestrial life hinges on identifying biosignatures, often focusing on gaseous metabolic byproducts as indicators. However, most such biosignatures require assuming specific metabolic processes.
Akshit Goyal, Mikhail Tikhonov
doaj   +2 more sources

Network-based integrative multi-omics approach reveals biosignatures specific to COVID-19 disease phases

Frontiers in Molecular Biosciences
BackgroundCOVID-19 disease is characterized by a spectrum of disease phases (mild, moderate, and severe). Each disease phase is marked by changes in omics profiles with corresponding changes in the expression of features (biosignatures).
Emile Rugamika Chimusa, Francis Edem Agamah, Darren Martin   +2 more
exaly   +3 more sources

An astrobiological perspective on microbial biofilms: their importance for habitability and production of detectable and lasting biosignatures [PDF]

Applied and Environmental Microbiology
The search for life elsewhere in the universe has remained one of the main goals of astrobiological exploration. In this quest, extreme environments on Earth have served as analogs to study the potential habitability of Mars and icy moons, which include ...
Sarah Gonzalez-Henao, Matthew O. Schrenk
doaj   +2 more sources

The Ground-Based BIOMEX Experiment Verification Tests for Life Detection on Mars

Life, 2021
The success of an astrobiological search for life campaign on Mars, or other planetary bodies in the Solar System, relies on the detectability of past or present microbial life traces, namely, biosignatures.
Claudia Pacelli, Alessia Cassaro, Ilaria Catanzaro, Mickael Baqué, Alessandro Maturilli, Ute Böttger, Elke Rabbow, Jean-Pierre Paul de Vera, Silvano Onofri   +8 more
doaj   +1 more source

Oxygenic photosynthetic responses of cyanobacteria exposed under an M-dwarf starlight simulator: Implications for exoplanet’s habitability

Frontiers in Plant Science, 2023
IntroductionThe search for life on distant exoplanets is expected to rely on atmospheric biosignatures detection, such as oxygen of biological origin.
Mariano Battistuzzi, Mariano Battistuzzi, Lorenzo Cocola, Riccardo Claudi, Anna Caterina Pozzer, Anna Caterina Pozzer, Anna Segalla, Diana Simionato, Tomas Morosinotto, Tomas Morosinotto, Luca Poletto, Nicoletta La Rocca, Nicoletta La Rocca   +12 more
doaj   +1 more source

Remote and in-Situ Characterization of Mars Analogs: Coupling Scales to Improve the Search for Microbial Signatures on Mars

Frontiers in Astronomy and Space Sciences, 2022
Past environments on Mars contained abundant water, suggesting certain regions may have been conducive to life as we know it and implying the potential for microbial inhabitants.
Carolynn M. Harris, Matthew T. Maclay, Katherine A. Lutz, Vinitra Nathan, Noemi A. Ortega Dominguez, William D. Leavitt, William D. Leavitt, Marisa C. Palucis   +7 more
doaj   +1 more source

Taphonomy of Biosignatures in Microbial Mats on Little Ambergris Cay, Turks and Caicos Islands

Frontiers in Earth Science, 2020
Microbial mats are taxonomically and metabolically diverse microbial ecosystems, with a characteristic layering that reflects vertical gradients in light and oxygen availability.
Maya L. Gomes, Leigh Anne Riedman, Shane O’Reilly, Shane O’Reilly, Usha Lingappa, Kyle Metcalfe, David A. Fike, John P. Grotzinger, Woodward W. Fischer, Andrew H. Knoll   +9 more
doaj   +1 more source

Ratiometric glucose sensing based on fluorescent oxygen films and glucose oxidase

Sensing and Bio-Sensing Research, 2017
A new two-layer sensor film was constructed for sensing glucose based on glucose oxidase and oxygen sensing material. The first layer of film containing the oxygen sensor and intra-reference material was polymerized, then the second layer of glucose ...
Fengyu Su, Liqiang Zhang, Xiangxing Kong, Fred Lee, Yanqing Tian, Deirdre R. Meldrum   +5 more
doaj   +1 more source