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| http://dx.doi.org/10.3389/fmicb.2014.00242 | DOI Listing |
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Transcriptomic profiling of haloarchaeal denitrification through RNA-Seq analysis.
Appl Environ Microbiol
June 2024
Biochemistry, Molecular Biology, Edaphology and Agricultural Chemistry Department, Faculty of Sciences, Universitat d'Alacant, Alicante, Spain.
Denitrification, a crucial biochemical pathway prevalent among haloarchaea in hypersaline ecosystems, has garnered considerable attention in recent years due to its ecological implications. Nevertheless, the underlying molecular mechanisms and genetic regulation governing this respiration/detoxification process in haloarchaea remain largely unexplored. In this study, RNA-sequencing was used to compare the transcriptomes of the haloarchaeon under oxic and denitrifying conditions, shedding light on the intricate metabolic alterations occurring within the cell, such as the accurate control of the metal homeostasis.
View Article and Find Full Text PDFBacterial diversity and chemical ecology of natural product-producing bacteria from Great Salt Lake sediment.
ISME Commun
January 2024
Department of Pharmacology and Toxicology, University of Utah, Salt Lake City, UT 84112, United States.
Great Salt Lake (GSL), located northwest of Salt Lake City, UT, is the largest terminal lake in the USA. While the average salinity of seawater is ~3.3%, the salinity in GSL ranges between 5% and 28%.
View Article and Find Full Text PDFBacterial Diversity and Chemical Ecology of Natural Product-Producing Bacteria from Great Salt Lake Sediment.
bioRxiv
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Department of Pharmacology and Toxicology, University of Utah, Salt Lake City, United States.
Great Salt Lake (GSL), located northwest of Salt Lake City, UT, is the largest terminal lake in the United States. While the average salinity of seawater is ~3.3%, the salinity in GSL ranges between 5-28%.
View Article and Find Full Text PDFPhytoplanktonic species in the haloalkaline Lake Dziani Dzaha select their archaeal microbiome.
Mol Ecol
December 2023
Universite Claude Bernard Lyon 1, INSA Lyon, CNRS, UMR 5240 Microbiologie, Adaptation et Pathogénie, Villeurbanne, France.
Microorganisms are key contributors of aquatic biogeochemical cycles but their microscale ecology remains largely unexplored, especially interactions occurring between phytoplankton and microorganisms in the phycosphere, that is the region immediately surrounding phytoplankton cells. The current study aimed to provide evidence of the phycosphere taking advantage of a unique hypersaline, hyperalkaline ecosystem, Lake Dziani Dzaha (Mayotte), where two phytoplanktonic species permanently co-dominate: a cyanobacterium, Arthrospira fusiformis, and a green microalga, Picocystis salinarum. To assay phycospheric microbial diversity from in situ sampling, we set up a flow cytometry cell-sorting methodology for both phytoplanktonic populations, coupled with metabarcoding and comparative microbiome diversity.
View Article and Find Full Text PDFUnusual similarity of DNA solvation dynamics in high-salinity crowding with divalent cations of varying concentrations.
Phys Chem Chem Phys
October 2023
Spectroscopy Laboratory, School of Physical Sciences, Jawaharlal Nehru University, New Delhi 110067, India.
Double-stranded DNA bears the highest linear negative charge density (2 per base-pair) among all biopolymers, leading to strong interactions with cations and dipolar water, resulting in the formation of a dense 'condensation layer' around DNA. Interactions involving proteins and ligands binding to DNA are primarily governed by strong electrostatic forces. Increased salt concentrations impede such electrostatic interactions - a situation that prevails in oceanic species due to their cytoplasm being enriched with salts.
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