Andreas Sichert

Metabolic cascades drive spatial prebiotic fermentation in a defined gut consortium

This study shows that spatial prebiotic fermentation in a gut microbiota consortium is driven by metabolic cascades, revealing how spatial gradients influence microbial function and prebiotic efficacy.

Widespread attraction of marine bacteria to the macroalgae-derived polysaccharide fucoidan

This study shows marine bacteria are attracted to fucoidan at high concentrations, suggesting it guides them to macroalgal surfaces, influencing carbon cycling.

Negative and neutral interactions are prevalent in interactions between marine chitin degraders

The study examines interactions among marine chitin-degrading bacteria, finding that negative and neutral interactions are common, contrasting with synergistic dynamics observed with other polysaccharides.

D-gluconate drives Salmonella growth during acute and chronic infection

This study identifies D-gluconate as a key nutrient source for Salmonella during both acute and chronic infection, supporting its growth in the inflamed gut.

A division of labor controls the degradation of fucoidans in the ocean

The paper shows that specialized bacteria degrade fucoidans through cooperative interactions, enhancing degradation efficiency by up to 97.1%.

Single-cell mass accumulation reveals bacterioplankton growth rate in native seawater

The paper measures growth rates of Vibrio bacteria in seawater using a single-cell chemostat, finding they grow consistently and are carbon-limited despite being rare.

Extracellular polymeric substance degradation shapes microbial community diversity

The paper shows that EPS from chitin degradation influences microbial community diversity by supporting different consumer types through sequential breakdown.

Interplay between chemotaxis, quorum sensing, and metabolism regulates Escherichia coli-Salmonella Typhimurium interactions in vivo

This study investigates how AI-2 signaling and chemotaxis in E. coli influence its competitive interaction with Salmonella Typhimurium in the gut, affecting colonization resistance and metabolism.

Monosaccharides Drive Salmonella Gut Colonization in a Context-Dependent Manner

This study identifies context-dependent and -independent carbohydrates used by Salmonella Typhimurium for gut colonization in mice, highlighting D-glucose, D-fructose, and D-galactose as key substrates.

Selective preservation of fucose-rich oligosaccharides in the North Atlantic Ocean

The paper identifies fucose-rich oligosaccharides in deep ocean seawater, showing their selective preservation compared to surface ocean samples.