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Dynamically induced spatial segregation in multispecies bacterial bioconvection.
Nat Commun
January 2025
Department of Physics of Complex Systems, Weizmann Institute of Science, Rehovot, Israel.
Active matter, from motile bacteria to animals, can exhibit striking collective and coherent behavior. Despite significant advances in understanding the behavior of homogeneous systems, little is known about the self-organization and dynamics of heterogeneous active matter, such as complex and diverse bacterial communities. Under oxygen gradients, many bacterial species swim towards air-liquid interfaces in auto-organized, directional bioconvective flows, whose spatial scales exceed the cell size by orders of magnitude.
View Article and Find Full Text PDFMoonlighting antibiotics: the extra job of modulating biofilm formation.
Trends Microbiol
January 2025
Laboratorio de Estructura y Fisiología de Biofilms Microbianos, Instituto de Biología Molecular y Celular de Rosario (IBR, CONICET-UNR), Predio CONICET Rosario, Ocampo y Esmeralda, (2000) Rosario, Argentina. Electronic address:
The widespread use of antibiotics to treat bacterial infections has led to the common perception that their only function is to inhibit growth or kill bacteria. However, it has become clear that when antibiotics reach susceptible bacteria at non-lethal concentrations, they perform additional functions that significantly impact bacterial physiology, shaping both individual and collective behaviors. A key bacterial behavior influenced by sub-lethal antibiotic doses is biofilm formation, a multicellular, surface-associated mode of growth.
View Article and Find Full Text PDFBiomimetic Confined Assembly of Plasmonic CuS from Electronic Waste for Rapid Photothermal Disinfection.
ACS Nano
January 2025
State Key Laboratory of Pollution Control and Resources Reuse, College of Environmental Science and Engineering, Tongji University, Shanghai 200092, China.
Photothermal disinfection (PTD) offers promising potential for water purification due to its sustainable and broad-spectrum bactericidal properties, although it is hindered by slow charge separation in photosensitizers. Herein, we present a plasma-mediated PTD technique utilizing an efficient localized heating effect induced by incident light at specific wavelengths for rapid bacterial inactivation. A metallic CuS photosensitizer, derived from electronic waste through a biomimetic transmembrane confined-assembled strategy, facilitates collective and coherent oscillation of free electrons around Cu atoms in the near-infrared range.
View Article and Find Full Text PDFLow functional change despite high taxonomic turnover characterizes the microbiome across a 2000-km salinity gradient.
Sci Adv
January 2025
Phycology Research Group, Department of Biology, Ghent University, Ghent, Belgium.
The green seaweed relies on associated bacteria for morphogenesis and is an important model to study algal-bacterial interactions. -associated bacteria exhibit high turnover across environmental gradients, leading to the hypothesis that bacteria contribute to the acclimation potential of the host. However, the functional variation of these bacteria in relation to environmental changes remains unclear.
View Article and Find Full Text PDFERK activation waves coordinate mechanical cell competition leading to collective elimination via extrusion of bacterially infected cells.
Cell Rep
January 2025
Interfaculty Institute of Microbiology and Infection Medicine, University of Tübingen, 72076 Tübingen, Baden-Württemberg, Germany; Cluster of Excellence EXC 2124 Controlling Microbes to Fight Infections, University of Tübingen, 72076 Tübingen, Baden-Württemberg, Germany. Electronic address:
Epithelial cells respond to infection with the intracellular bacterial pathogen Listeria monocytogenes by altering their mechanics to promote collective infected cell extrusion (CICE) and limit infection spread across cell monolayers. However, the underlying biochemical pathways remain elusive. Here, using in vitro (epithelial monolayers) and in vivo (zebrafish larvae) models of infection with L.
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