What question did this study set out to answer?

To determine whether specific marine bacterial groups consume dissolved organic matter proportionally to their relative abundance in coastal and estuarine communities.

April 1, 2000Applied and Environmental MicrobiologyOpen Access

Natural Assemblages of Marine Proteobacteria and Members of the Cytophaga-Flavobacter Cluster Consuming Low- and High-Molecular-Weight Dissolved Organic Matter

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Authors

MCMatthew T. CottrellMoog (United States)DKDavid L. KirchmanUniversity of Delaware

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Implication

Experimental analysis reveals distinct dissolved organic matter utilization patterns among marine bacterial groups, suggesting diverse bacterial assemblages are critical for oceanic carbon cycling.

Key Points

To determine whether specific marine bacterial groups consume dissolved organic matter proportionally to their relative abundance in coastal and estuarine communities.
Applied microautoradiography coupled with fluorescence in situ hybridization using rRNA-targeted oligonucleotide probes (MICRO-FISH) to whole cells.
Assessed the consumption of specific low- and high-molecular-weight dissolved organic matter components, including chitin, N-acetylglucosamine, protein, and amino acids.
The Cytophaga-Flavobacter cluster was overrepresented among bacteria consuming chitin, N-acetylglucosamine, and protein, but underrepresented in amino acid consumption.
The alpha subclass of Proteobacteria dominated amino acid utilization, while its participation in protein consumption matched its general community abundance.
No single bacterial lineage dominated the consumption of all organic matter types, indicating specialized metabolic roles across diverse taxa.

Cite This Study

Cottrell et al. (2000) studied this question.

synapsesocial.com/papers/69e2a3d415183950a2b736f7 https://doi.org/10.1128/aem.66.4.1692-1697.2000

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Implication

Experimental analysis reveals distinct dissolved organic matter utilization patterns among marine bacterial groups, suggesting diverse bacterial assemblages are critical for oceanic carbon cycling.

Natural Assemblages of Marine Proteobacteria and Members of the Cytophaga-Flavobacter Cluster Consuming Low- and High-Molecular-Weight Dissolved Organic Matter

Discussion

Member takes

Implication

Key Points

Cite This Study

Natural Assemblages of Marine Proteobacteria and Members of the Cytophaga-Flavobacter Cluster Consuming Low- and High-Molecular-Weight Dissolved Organic Matter

Discussion

Member takes

Implication

Key Points

Cite This Study

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