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Role of organophosphorus pesticides in facilitating plasmid-mediated conjugative transfer: Efficiency and mechanisms.
J Hazard Mater
January 2025
Faculty of Environmental Science & Engineering, Kunming University of Science and Technology, Kunming 650500, China. Electronic address:
Non-antibiotic conditions, including organophosphorus pesticides (OPPs), have been implicated in the horizontal gene transfer (HGT) of antibiotic resistance genes (ARGs) to varying degrees. While most studies focus on the toxicity of OPPs to humans and animals, their roles in ARG dissemination remain largely unexplored. In this study, we investigate the effects and involved molecular mechanisms of environmentally relevant concentrations of malathion and dimethoate, two representative OPPs, on plasmid-mediated conjugal transfer.
View Article and Find Full Text PDFThe impact of arbuscular mycorrhizal colonization on flooding response of .
Front Plant Sci
January 2025
Department of General and Applied Botany, Institute of Biology, Leipzig University, Leipzig, Germany.
Climate change is expected to lead to an increase in precipitation and flooding. Consequently, plants that are adapted to dry conditions have to adjust to frequent flooding periods. In this study, we investigate the flooding response of , a Mediterranean plant adapted to warm and dry conditions.
View Article and Find Full Text PDFIn vivo simultaneous proton resonance frequency shift thermometry and single reference variable flip angle T measurements.
Magn Reson Med
January 2025
Department of Radiology and Imaging Sciences, University of Utah Health, Salt Lake City, Utah, USA.
Purpose: The single reference variable flip angle sequence with a multi-echo stack of stars acquisition (SR-VFA-SoS) simultaneously measures temperature change using proton resonance frequency (PRF) shift and T-based thermometry methods. This work evaluates SR-VFA-SoS thermometry in MR-guided focused ultrasound in an in vivo rabbit model.
Methods: Simultaneous PRF shift thermometry and T-based thermometry were obtained in a New Zealand white rabbit model (n = 7) during MR-guided focused ultrasound surgery using the SR-VFA-SoS sequence at 3 T.
Organic photoredox-catalyzed unimolecular PCET of benzylic alcohols.
Chem Sci
January 2025
Institute for Chemical Research, Kyoto University Gokasho Uji Kyoto 611-0011 Japan
Proton-coupled electron transfer (PCET) is a crucial chemical process involving the simultaneous or sequential transfer of protons and electrons, playing a vital role in biological processes and energy conversion technologies. This study investigates the use of an organic photoredox catalyst to facilitate a unimolecular PCET process for the generation of alkyl radicals from benzylic alcohols, with a particular focus on alcohols containing electron-rich arene units. By employing a benzophenone derivative as the catalyst, the reaction proceeds efficiently under photoirradiation, achieving significant yields without the need for a Brønsted base.
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