Results 11 to 20 of about 110,880 (237)

Epigenomics in an extraterrestrial environment: organ-specific alteration of DNA methylation and gene expression elicited by spaceflight in Arabidopsis thaliana [PDF]

open access: goldBMC Genomics, 2019
Background Plants adapted to diverse environments on Earth throughout their evolutionary history, and developed mechanisms to thrive in a variety of terrestrial habitats.
Mingqi Zhou   +4 more
doaj   +3 more sources

Solvent constraints for biopolymer folding and evolution in extraterrestrial environments [PDF]

open access: greenProceedings of the National Academy of Sciences
We propose that spontaneous folding and molecular evolution of biopolymers are two universal aspects that must concur for life to happen. These aspects are fundamentally related to the chemical composition of biopolymers and crucially depend on the solvent in which they are embedded. We show that molecular information theory and energy landscape theory
Ignacio E. Sánchez   +2 more
europepmc   +7 more sources

Low Energy Subsurface Environments as Extraterrestrial Analogs [PDF]

open access: goldFrontiers in Microbiology, 2018
Earth's subsurface is often isolated from phototrophic energy sources and characterized by chemotrophic modes of life. These environments are often oligotrophic and limited in electron donors or electron acceptors, and include continental crust, subseafloor oceanic crust, and marine sediment as well as subglacial lakes and the subsurface of polar ...
Rose M. Jones   +2 more
openalex   +4 more sources

Habitable planetary environments and extraterrestrial life [PDF]

open access: bronzeChinese Science Bulletin, 2016
Arguably one of the most important discoveries in the history of human being is the detection of a planet orbiting a main sequence star beyond the solar system. By the time Science celebrated its 125th anniversary, ~150 exoplanets have been discovered. However, there was no known habitable exoplanet.
Feng Tian
openalex   +3 more sources

Ionizing radiation resilience: how metabolically active lichens endure exposure to the simulated Mars atmosphere [PDF]

open access: yesIMA Fungus
To deepen our understanding of lichen adaptation and their potential to colonize extraterrestrial environments, we aimed to identify physiological/biochemical responses of selected lichen species in a metabolically active state to simulated Mars-like ...
Kaja Skubała   +6 more
doaj   +4 more sources

Photosynthesis and Photo-Stability of Nucleic Acids in Prebiotic Extraterrestrial Environments [PDF]

open access: green, 2014
Laboratory experiments have shown that the UV photo-irradiation of low-temperature ices of astrophysical interest leads to the formation of organic molecules, including molecules important for biology such as amino acids, quinones, and amphiphiles. When pyrimidine is introduced into these ices, the products of irradiation include the nucleobases uracil,
Scott A. Sandford   +4 more
openalex   +4 more sources

Crop Production in an Extraterrestrial (Controlled-Environment, Microgravity) Environment

open access: bronzeJournal of Agricultural Meteorology, 2005
Jessica J. Prenger   +8 more
openalex   +4 more sources

Insights into a remote cryosphere: a multi-method approach to assess permafrost occurrence at the Qugaqie basin, western Nyainqêntanglha Range, Tibetan Plateau [PDF]

open access: yesThe Cryosphere, 2021
Permafrost as a climate-sensitive parameter and its occurrence and distribution play an important role in the observation of global warming. However, field-based permafrost distribution data and information on the subsurface ice content in the large area
J. Buckel   +7 more
doaj   +1 more source

A novel protein for bioremediation of gadolinium waste [PDF]

open access: yesProtein Science, Volume 34, Issue 4, April 2025.
Abstract Several hundreds of tons of gadolinium‐based contrast agents (GBCAs) are being dumped into the environment every year. Although macrocyclic GBCAs exhibit superior stability compared to their linear counterparts, we have found that the structural integrity of chelates is susceptible to ultraviolet light, regardless of configuration.
Harvey D. Lee   +10 more
wiley   +2 more sources

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