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Omics score: 1000

Freshwater metagenome

ABSTRACT: Freshwater microbial communities from Trout Bog Lake, WI - 20AUG2007 epilimnion metagenome

PROVIDER: PRJNA337774 | ENA |

REPOSITORIES: ENA

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			Action	DRS
	SRR4029081_1.fastq.gz	Fastqsanger.gz
	SRR4029081_2.fastq.gz	Fastqsanger.gz

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Freshwater carbon and nutrient cycles revealed through reconstructed population genomes.

Project description:Although microbes mediate much of the biogeochemical cycling in freshwater, the categories of carbon and nutrients currently used in models of freshwater biogeochemical cycling are too broad to be relevant on a microbial scale. One way to improve these models is to incorporate microbial data. Here, we analyze both genes and genomes from three metagenomic time series and propose specific roles for microbial taxa in freshwater biogeochemical cycles. Our metagenomic time series span multiple years and originate from a eutrophic lake (Lake Mendota) and a humic lake (Trout Bog Lake) with contrasting water chemistry. Our analysis highlights the role of polyamines in the nitrogen cycle, the diversity of diazotrophs between lake types, the balance of assimilatory vs. dissimilatory sulfate reduction in freshwater, the various associations between types of phototrophy and carbon fixation, and the density and diversity of glycoside hydrolases in freshwater microbes. We also investigated aspects of central metabolism such as hydrogen metabolism, oxidative phosphorylation, methylotrophy, and sugar degradation. Finally, by analyzing the dynamics over time in nitrogen fixation genes and Cyanobacteria genomes, we show that the potential for nitrogen fixation is linked to specific populations in Lake Mendota. This work represents an important step towards incorporating microbial data into ecosystem models and provides a better understanding of how microbes may participate in freshwater biogeochemical cycling.

2018-01-01 | S-EPMC6292386 | BioStudies

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Project description:Freshwater microbial communities from Trout Bog Lake, WI - 13JUN2007 epilimnion metagenome

| PRJNA337749 | ENA

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Project description:Freshwater microbial communities from Trout Bog Lake, WI - 25AUG2008 epilimnion metagenome

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Project description:Freshwater microbial communities from Trout Bog Lake, WI - 29JUL2008 epilimnion metagenome

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