A5060872176- Bacteriophages and microbial interactions
- Vibrio bacteria research studies
- Microbial Community Ecology and Physiology
- Genomics and Phylogenetic Studies
- Bacterial biofilms and quorum sensing
- Aquaculture disease management and microbiota
- Bacterial Genetics and Biotechnology
- Marine and coastal ecosystems
- Protist diversity and phylogeny
- Machine Learning in Bioinformatics
- Evolution and Genetic Dynamics
Ecologie Microbienne Lyon
2024
University of Vienna
2024
Max Planck Institute for Marine Microbiology
2021
Abstract It is generally recognized that phages are a mortality factor for their bacterial hosts. This could be particularly true in spring phytoplankton blooms, which known to closely followed by highly specialized community. We hypothesized modulate these dense heterotrophic bacteria successions following blooms. In this study, we focused on Flavobacteriia, because they main responders during blooms and have an important role the degradation of polysaccharides. A cultivation-based approach...
Ixotrophy is a contact-dependent predatory strategy of filamentous bacteria in aquatic environments for which the molecular mechanism remains unknown. We show that predator-prey contact can be established by gliding motility or extracellular assemblages we call "grappling hooks." Cryo-electron microscopy identified grappling hooks as heptamers type IX secretion system substrate. After close established, cryo-electron tomography and functional assays showed puncturing VI mediated killing....
Abstract Predation allows bacteria to access alternative substrates in low-nutrient conditions. Ixotrophy has been proposed as a predatory lifestyle of multicellular filamentous aquatic environments; however, the molecular mechanism remains unknown. Here we uncover by multidisciplinary approach that ixotrophy requires interplay multiple cellular machineries and regulatory mechanism. Attacker-prey contacts are established gliding motility extracellular grappling hook-like structures bind prey...
Abstract Oligotrophic ocean gyre ecosystems may be expanding due to rising global temperatures [1–5]. Models predicting carbon flow through these changing require accurate descriptions of phytoplankton communities and their metabolic activities [6]. We therefore measured distributions cyanobacteria small photosynthetic eukaryotes throughout the euphotic zone on a zonal transect South Pacific Ocean, focusing ultraoligotrophic waters Gyre (SPG). Bulk rates CO2 fixation were low (0.1 µmol C l−1...
Antagonistic interactions with viruses are an important driver of the ecology and evolution bacteria, associating genetic signatures to these is fundamental importance predict viral infection success. Recent studies have highlighted that bacteria possess a large, rapidly changing arsenal defense genes can neutralize at least some matching anti-defenses. However, broadly applicable approach for discovering underpinnings such missing since typically used methods as comparative genomics limited...
Although tailed bacteriophages (phages) of the class Caudoviricetes are thought to constitute most abundant and ecologically relevant group phages that can integrate their genome into host chromosome, it is becoming increasingly clear other prophages widespread. Here, we show derived from filamentous tailless with sizes below 16 kb make up majority in marine bacteria genus Vibrio. To estimate prophage prevalence unaffected by database biases, combined comparative genomics chemical induction...
<title>Abstract</title> Antagonistic interactions with viruses are an important driver of the ecology and evolution bacteria, associating genetic signatures to these is fundamental importance predict viral infection success. Recent studies have highlighted that bacteria possess a large, rapidly changing arsenal defense genes can neutralize at least some matching anti-defenses. However, broadly applicable approach for discovering underpinnings such missing since typically used methods as...
Abstract It is generally recognized that phages have a modulating role in the marine environment. Therefore, we hypothesized can be mortality factor for dense heterotrophic bacterial population succeeding phytoplankton blooms. For carbon cycle, spring blooms are important recurring events. In this study, focused on Flavobacteriia , because they main responders during these and an degradation of polysaccharides. A cultivation-based approach was used, obtaining 44 lytic flavobacterial...