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Various species of freshwater fish regulate the expression of certain proteins in response to environmental contamination. Previous research has shown that CYP1A expression increases in response to contaminant levels and can result in increased tumor formation. Fish in contaminated environments would thus benefit by downregulating the expression of CYP1A to reduce tumor prevalence as an adaptive strategy.
View Article and Find Full Text PDFGenetic structure of the protist Physarum albescens (Amoebozoa) revealed by multiple markers and genotyping by sequencing.
Mol Ecol
January 2022
General Botany and Plant Systematics, Institute of Botany and Landscape Ecology, University of Greifswald, Greifswald, Germany.
Article Synopsis
- - The study investigates the genetic diversity and distribution of the myxomycete species Physarum albescens across the Northern Hemisphere, analyzing 324 samples using various genetic markers.
- - The findings reveal at least 18 distinct cryptic species within P. albescens, with some being regionally endemic and not found in other areas, indicating a complex structure within this seemingly cosmopolitan group.
- - Additionally, the research shows evidence of both sexual and asexual reproduction in these myxomycetes, highlighting their ability to adapt and survive in diverse environments.
Climate change and drinking water from Scottish peatlands: Where increasing DOC is an issue?
J Environ Manage
December 2021
School of Biological Sciences, University of Aberdeen, 23 St Machar Drive, AB24 3UU, UK.
Increasing levels of dissolved organic carbon (DOC) have been detected in the last decades in water bodies of the Northern hemisphere, and climate change might fuel this rise. For drinking water reservoirs located in peatland catchments, already subjected to elevated amounts of DOC that needs to be removed, this might pose a further problem. Scotland is predicted to face warmer temperatures and a change in rainfall patterns, which will result in more frequent and severe summer droughts and in heavier winter precipitation.
View Article and Find Full Text PDFWinter survival of the unicellular green alga Micrasterias denticulata: insights from field monitoring and simulation experiments.
Protoplasma
November 2021
Department of Botany, Functional Plant Biology, University of Innsbruck, Sternwartestrasse 15, 6020, Innsbruck, Austria.
Peat bog pools around Tamsweg (Lungau, Austria) are typical habitats of the unicellular green alga Micrasterias denticulata. By measurement of water temperature and irradiation throughout a 1-year period (2018/2019), it was intended to assess the natural environmental strain in winter. Freezing resistance of Micrasterias cells and their ability to frost harden and become tolerant to ice encasement were determined after natural hardening and exposure to a cold acclimation treatment that simulated the natural temperature decrease in autumn.
View Article and Find Full Text PDFArticle Synopsis
- The study analyzes chemical parameters of water from various mire bodies in the Vologda Region, Russia, collected monthly over three years.
- Measurements included water color, pH, permanganate value, and concentrations of various ions using established laboratory methods.
- Results showed significant variability in pH (3.7 to 7.2) and permanganate values (5.6 to 150.4 mg O/L), highlighting the diverse chemical composition across different mire environments.
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