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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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Journal ArticleDOI

Microbiome–metabolomics reveals gut microbiota associated with glycine-conjugated metabolites and polyamine metabolism in chronic kidney disease

TL;DR: The CKD-associated gut microbial dysbiosis is confirmed and a novel dietary and therapeutic strategy to improve the gut microbial Dysbiosis and the associated metabolomic disorders and retarded the progression of kidney disease in the rat model of CKD is identified.
Journal ArticleDOI

Diversity and Co-occurrence Patterns of Soil Bacterial and Fungal Communities in Seven Intercropping Systems.

TL;DR: Taken together, trifolium and mustard as the intercrops significantly increased cucumber continuous cropping soil bacterial and fungal communities diversity, and intercropping strongly changed the relationships of microbial taxa, though did not shape notably soil microbial communities structure.
Journal ArticleDOI

Evidence for foliar endophytic nitrogen fixation in a widely distributed subalpine conifer

TL;DR: It is proposed that foliar endophytes represent a low-cost, evolutionarily stable N2 -fixing strategy for long-lived conifers and this novel source of biological N2 fixation has fundamental implications for understanding forest N budgets.
Journal ArticleDOI

Amniotic fluid from healthy term pregnancies does not harbor a detectable microbial community

TL;DR: The virome and bacterial microbiota of amniotic fluid from 24 uncomplicated term pregnancies were characterized using next-generation sequencing methods and found no evidence of a core viral community across samples.
Journal ArticleDOI

Effects of past and current drought on the composition and diversity of soil microbial communities

TL;DR: Soils with a history of drought had higher overall bacterial alpha diversity at the end of the experimental drought, presumably because of adaptation of the bacterial community to drought conditions, and some bacterial taxa decreased in abundance more in the pre-droughted soils.
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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