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Journal ArticleDOI

UPARSE: highly accurate OTU sequences from microbial amplicon reads

Robert C. Edgar
- 01 Oct 2013 - 
- Vol. 10, Iss: 10, pp 996-998
TLDR
The UPARSE pipeline reports operational taxonomic unit (OTU) sequences with ≤1% incorrect bases in artificial microbial community tests, compared with >3% correct bases commonly reported by other methods.
Abstract
Amplified marker-gene sequences can be used to understand microbial community structure, but they suffer from a high level of sequencing and amplification artifacts. The UPARSE pipeline reports operational taxonomic unit (OTU) sequences with ≤1% incorrect bases in artificial microbial community tests, compared with >3% incorrect bases commonly reported by other methods. The improved accuracy results in far fewer OTUs, consistently closer to the expected number of species in a community.

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Impairment of the intestine barrier function in Litopenaeus vannamei exposed to ammonia and nitrite stress.

TL;DR: High‐throughput 16S rDNA sequencing revealed that ammonia and nitrite stress harmed the intestine barrier function of L. vannamei by damaging the mucosal tissue, disrupting the composition of intestine microbial, and suppressing the immune function.
Journal ArticleDOI

Microbial community structure and diversity in a municipal solid waste landfill

TL;DR: MiSeq high-throughput sequencing method was applied for the first time to examine microbial diversity of the cover soil and stored waste located at different depths in a typical MSW landfill in Yangzhou City, East China and showed that microbial diversity in the landfill was most strongly correlated with the conductivity, organic matter, and moisture content of the stored waste.
Journal ArticleDOI

Bacterial community structure across environmental gradients in permafrost thaw ponds: methanotroph-rich ecosystems.

TL;DR: The results indicate that the bacterial assemblages of permafrost thaw ponds are filtered by environmental gradients, and are complex consortia of functionally diverse taxa that likely affect the composition as well as magnitude of greenhouse gas emissions from these abundant waters.
Journal ArticleDOI

Cost-effective Chlorella biomass production from dilute wastewater using a novel photosynthetic microbial fuel cell (PMFC)

TL;DR: Results of this study reveal that, in addition to inducing oxygen reduction reactions under illumination, the biocathode is effective in preventing the washout of algae during continuous operation, resulting in retained biomass concentrations reaching 3.5-6.5 g L-1.5 under irradiation.
Journal ArticleDOI

Microbiota modification by probiotic supplementation reduces colitis associated colon cancer in mice.

TL;DR: Probiotic supplementation changes microbiota structure and regulates the inflammatory response, reducing colitis and preventing CAC, suggesting a potential chemopreventive effect of probiotic on CAC.
References
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Journal ArticleDOI

Search and clustering orders of magnitude faster than BLAST

Robert C. Edgar
- 01 Oct 2010 - 
TL;DR: UCLUST is a new clustering method that exploits USEARCH to assign sequences to clusters and offers several advantages over the widely used program CD-HIT, including higher speed, lower memory use, improved sensitivity, clustering at lower identities and classification of much larger datasets.
Journal ArticleDOI

UCHIME improves sensitivity and speed of chimera detection

TL;DR: UCHIME has better sensitivity than ChimeraSlayer (previously the most sensitive database method), especially with short, noisy sequences, and in testing on artificial bacterial communities with known composition, UCHIME de novo sensitivity is shown to be comparable to Perseus.
Journal ArticleDOI

Database resources of the National Center for Biotechnology Information

TL;DR: In addition to maintaining the GenBank(R) nucleic acid sequence database, the National Center for Biotechnology Information (NCBI) provides data analysis and retrieval resources for the data in GenBank and other biological data made available through NCBI’s website.
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