Evidence map›Paper›PMID 7618894›Full record

ArticleApplied and environmental microbiology1995

Effect of genome size and rrn gene copy number on PCR amplification of 16S rRNA genes from a mixture of bacterial species.

V Farrelly, F A Rainey, E Stackebrandt

Open access · greenAbstract read
In one paragraph

Article in Applied and environmental microbiology, 1995. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 201 papers.

0numbers the graph read from it
0cells of the map it votes in
201citing papers in PubMed
10.8field-weighted citation impact, top 1% of its field
1 · What the graph read from it

What it found

Each row is one number read from the abstract, on the scale the paper reported it, with its interval. Left of the dashed line favours the treatment, right favours the comparator. Under each row is the sentence it came from. New to these charts? A ten-minute tutorial.

The abstract states no effect estimate the extractor could read, or names no intervention and outcome on the map, so this paper lights no cell and moves no belief. It is still indexed, cited and linked below.

2 · The registry

The trial behind it

Trials whose registry record cites this paper, or whose number appears in the abstract. A trial that started after this paper was published is citing it as background, not reporting it.

Neither the registry nor the abstract names a trial number. If this is a trial report, that itself is worth knowing.

3 · Its place in the literature

Who cites it

201 citing papers in PubMed, 723 citations in OpenAlex.

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  10. Comparative Survival and the Cold-Induced Gene Expression of Pathogenic and NonpathogenicInternational journal of environmental research and public health · 2020
    Article
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141 more citing papers are in PubMed but not listed here.

4 · The record

Corrections and comments

PubMed lists nothing against this paper. Absence here is not a guarantee, only a check that was made.

5 · Who and what money

Authors and funding

3 authors at 1 institution in 1 country.

V FarrellyDSM-German Collection of Microorganisms and Cell Cultures GmbH, Braunschweig.
F A Rainey
E Stackebrandt
Leibniz Institute DSMZ – German Collection of Microorganisms and Cell Cultures · DE

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

In order to assess the effect of genome size and number of 16S rRNA genes (rDNAs) on the quantities of PCR-generated partial 16S rDNA fragments, equimolar amounts of DNA from pairs of different species for which these parameters are known were subjected to gene amplification. The experimentally determined ratio of PCR products obtained, as determined by image analysis of SYBR-Green I-stained amplification products, corresponded well with the predicted ratio calculated from the number of rrn genes per equimolar amounts of DNA in mixtures of Escherichia coli and "Thermus thermophilus" and of Pseudomonas aeruginosa and "T. thermophilus." The values for the pair of Bacillus subtilis and "T. thermophilus" showed greater deviations from the predicted value. The dependence of the amount of 16S rDNA amplification product on these two parameters makes it impossible to quantify the number of species represented in 16S rDNA clone libraries of environmental samples as long as these two parameters are unknown for the species present.

Indexed as

Genome, BacterialOperonPolymerase Chain ReactionBacteriaBase SequenceMolecular Sequence DataRNA, Ribosomal, 16SRNA, Ribosomal, 16S

Identifiers

PMID7618894
PMCPMC167554
OpenAlexW2081411589

What OpenQuestion holds

Textmetadata
Read underepoch 390

Registered trials

None linked

Read under generation 80e0d062 · epoch 390. Bibliography from PubMed, PubMed Central and OpenAlex; grants from NIH RePORTER; trial links from ClinicalTrials.gov; estimates, votes and beliefs from the OpenQuestion graph.