Evidence map›Paper›PMID 23823491›Full record

ArticleThe ISME journal2013

Evaluating rRNA as an indicator of microbial activity in environmental communities: limitations and uses.

Steven J Blazewicz, Romain L Barnard, Rebecca A Daly, Mary K Firestone

Abstract read
In one paragraph

Article in The ISME journal, 2013. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 345 papers, 1 of them a synthesis that pooled it.

0numbers the graph read from it
0cells of the map it votes in
345citing papers in PubMed, 1 pooled it
–field-weighted citation impact
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

345 citing papers in PubMed, 1 synthesis or guideline pooled it.

  1. Pooled it
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  10. Selective survival of anaerobic digester microbes afterWater science and technology : a journal of the International Association on Water Pollution Research · 2026
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285 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

4 authors.

Steven J BlazewiczThe Department of Environmental Science, Policy, and Management, University of California, Berkeley, CA, USA.
Romain L Barnard
Rebecca A Daly
Mary K Firestone

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

Microbes exist in a range of metabolic states (for example, dormant, active and growing) and analysis of ribosomal RNA (rRNA) is frequently employed to identify the 'active' fraction of microbes in environmental samples. While rRNA analyses are no longer commonly used to quantify a population's growth rate in mixed communities, due to rRNA concentration not scaling linearly with growth rate uniformly across taxa, rRNA analyses are still frequently used toward the more conservative goal of identifying populations that are currently active in a mixed community. Yet, evidence indicates that the general use of rRNA as a reliable indicator of metabolic state in microbial assemblages has serious limitations. This report highlights the complex and often contradictory relationships between rRNA, growth and activity. Potential mechanisms for confounding rRNA patterns are discussed, including differences in life histories, life strategies and non-growth activities. Ways in which rRNA data can be used for useful characterization of microbial assemblages are presented, along with questions to be addressed in future studies.

Indexed as

EcosystemEnvironmental MicrobiologyBacteriaEcologyMicrobiotaRNA, RibosomalRNA, Ribosomal

Identifiers

PMID23823491
PMCPMC3806256

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.