Cited by 878Microbial Community Ecology and PhysiologyGenomics and Phylogenetic StudiesEnvironmental DNA in Biodiversity Studies

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

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Blazewicz, Steven J, Barnard, Romain L, Daly, Rebecca A, Firestone, Mary K·2013·The ISME Journal

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.

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  1. Neidhardt FC. (1987). Chemical Composition of Escherichia coli vol. 1. American Society for Microbiology: Washington, DC.

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Authors
Blazewicz, S. J., Barnard, R. L., Daly, R. A., & Firestone, M. K.
Affiliations
  • United States Geological Survey (US)
  • Agroécologie (FR)
  • Lawrence Berkeley National Laboratory (US)
Corresponding author
Blazewicz, Steven J
Venue
The ISME Journal
Published
2013-07-04
Volume
7
Issue
11
Pages
2061-2068
ISSN
  • 1751-7362 (ISSN-L)
  • 1751-7370
OpenAlex
W1978468198
Cited by
878
References
79
Citations by year
2026: 61 · 2025: 47 · 2024: 49 · 2023: 46 · 2022: 60 · 2021: 100 · 2020: 64 · 2019: 78 · 2018: 122 · 2017: 83 · 2016: 59 · 2015: 65 · 2014: 40 · 2013: 3
FWCI
49.20
Type
journal article
Language
en
Open access
Locations
  • The ISME Journal (publishedVersion)
  • PubMed Central (publishedVersion)
  • PubMed (publishedVersion)
  • HAL (submittedVersion)
Funders
  • National Science Foundation
  • U.S. Department of Energy (DE-PS02-09ER09-25)
  • European Commission (219357)
Topics
  • Physical Sciences › Environmental Science › Ecology › Microbial Community Ecology and Physiology
  • Life Sciences › Biochemistry, Genetics and Molecular Biology › Molecular Biology › Genomics and Phylogenetic Studies
  • Physical Sciences › Environmental Science › Ecology › Environmental DNA in Biodiversity Studies
Keywords
ribosomal RNA, microbial activity, microbial growth rate, life history strategies, microbial assemblages, environmental microbial communities
MeSH terms
Bacteria, Ecology, Environmental Microbiology, RNA, Ribosomal, Ecosystem, Microbiota

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