Particle-attached bacteria act as gatekeepers in the decomposition of complex phytoplankton polysaccharides.

ABSTRACT:

Background

Marine microalgae (phytoplankton) mediate almost half of the worldwide photosynthetic carbon dioxide fixation and therefore play a pivotal role in global carbon cycling, most prominently during massive phytoplankton blooms. Phytoplankton biomass consists of considerable proportions of polysaccharides, substantial parts of which are rapidly remineralized by heterotrophic bacteria. We analyzed the diversity, activity, and functional potential of such polysaccharide-degrading bacteria in different size fractions during a diverse spring phytoplankton bloom at Helgoland Roads (southern North Sea) at high temporal resolution using microscopic, physicochemical, biodiversity, metagenome, and metaproteome analyses.

Results

Prominent active 0.2-3 µm free-living clades compr

SUBMITTER: Wang FQ 

PROVIDER: S-EPMC10877868 | biostudies-literature | 2024 Feb

REPOSITORIES: biostudies-literature