Results 11 to 20 of about 698,311 (125)
Effect of $TiO_{2}$ nanoparticles on the thermal stability of native DNA under UV irradiation [PDF]
, 2021 $TiO_{2}$ nanoparticles (NPs) are widely used in the environmental engineering, medicine, chemical and food industries due to their unique photocatalytic and biocidal properties. NPs may generate reactive oxygen species and, hence, have the toxic effect on the living cells via oxidative stress.
arxiv +1 more source
Multiscale model of electronic behavior and localization in stretched dry DNA [PDF]
J. Mater. Sci. 42, 8894 (2007)., 2007 When the DNA double helix is subjected to external forces it can stretch elastically to elongations reaching 100% of its natural length. These distortions, imposed at the mesoscopic or macroscopic scales, have a dramatic effect on electronic properties at the atomic scale and on electrical transport along DNA.
arxiv +1 more source
Structure and Properties of DNA Molecules Over The Full Range of Biologically Relevant Supercoiling States [PDF]
Scientific Reports, 8, 6163 (2018), 2017 Topology affects physical and biological properties of DNA and impacts fundamental cellular processes, such as gene expression, genome replication, chromosome structure and segregation. In all organisms DNA topology is carefully modulated and the supercoiling degree of defined genome regions may change according to physiological and environmental ...
arxiv +1 more source
Persistence of Environmental DNA in Freshwater Ecosystems
PLoS ONE, 2011 The precise knowledge of species distribution is a key step in conservation biology. However, species detection can be extremely difficult in many environments, specific life stages and in populations at very low density. The aim of this study was to improve the knowledge on DNA persistence in water in order to confirm the presence of the focus species
Dejean, Tony +6 more
openaire +8 more sources
The effect of tides on nearshore environmental DNA
PeerJ, 2017 Organisms of all kinds leave genetic traces in their environments, and in recent years, sequencing this environmental DNA (eDNA) has become a tractable means of surveying many species using water, air, or soil samples. The technique is beginning to become a core tool for ecologists, environmental scientists, and biologists of many kinds, but the ...
Kelly, Ryan +2 more
openaire +3 more sources
The Role of Methylation of DNA in Environmental Adaptation [PDF]
Integrative and Comparative Biology, 2013 Methylation of DNA is an epigenetic mechanism that influences patterns of gene expression. DNA methylation marks contribute to adaptive phenotypic variation but are erased during development. The role of DNA methylation in adaptive evolution is therefore unclear.
Kevin B. Flores +2 more
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Blinking statistics of a molecular beacon triggered by end-denaturation of DNA [PDF]
, 2005 We use a master equation approach based on the Poland-Scheraga free energy for DNA denaturation to investigate the (un)zipping dynamics of a denaturation wedge in a stretch of DNA, that is clamped at one end. In particular, we quantify the blinking dynamics of a fluorophore-quencher pair mounted within the denaturation wedge.
arxiv +1 more source
Analysis of environmental transcriptomes by DNA microarrays
Environmental Microbiology, 2006 SummaryIn this work we investigated the correlations between global gene expression patterns and environmental parameters in natural ecosystems. We studied the preferential gene expression of the iron oxidizer bacterium Leptospirillum ferrooxidans to adapt its physiology to changes in the physicochemical parameters in its natural medium.
Parro-García, Víctor +2 more
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Making environmental
Molecular Ecology Resources, 2015 The arc of reception for a new technology or method – like the reception of new information itself – can pass through predictable stages, with audiences’ responses evolving from ‘I don't believe it’, through ‘well, maybe’ to ‘yes, everyone knows that’ to, finally, ‘old news’.
openaire +3 more sources
The California environmental DNA “CALeDNA” program [PDF]
, 2019 AbstractGlobal change is leading to habitat shifts that threaten species persistence throughout California’s unique ecosystems. Baseline biodiversity data provide opportunities for ecosystems to be managed for community complexity and connectivity.
Meyer, Rachel +24 more
openaire +1 more source