F. L. Hellweger

Heterotrophic prokaryotes internal carbon recycling compensates mismatches between phytoplankton production and heterotrophic prokaryotic consumption

The paper estimates carbon fluxes in microbial communities using mechanistic inference, finding that internal recycling by heterotrophic prokaryotes compensates for mismatches between phytoplankton production and consumption.

Cool temperature acclimation in toxigenic Microcystis aeruginosa PCC 7806 and its non-toxigenic mutant

This study compares microcystin production in a toxigenic and non-toxigenic strain of M. aeruginosa under cold temperatures, showing increased microcystin quota and physiological changes in the wildtype.

Differences in the regulatory strategies of marine oligotrophs and copiotrophs reflect differences in motility

The paper compares regulatory strategies between marine oligotrophs and copiotrophs, finding that non-motile oligotrophs lack transcriptional regulation benefits due to slower response times.

SAR11 Cells Rely on Enzyme Multifunctionality to Transport and Metabolize a Range of Polyamine Compounds

The paper shows SAR11 bacteria transport and metabolize multiple polyamines using multifunctional enzymes, supporting the hypothesis that enzyme versatility enables streamlined genomes to utilize a wide range of dissolved organic matter.