Evidence map›Paper›PMID 30673701›Full record

ArticlePLoS biology2019

Evolutionary dynamics of bacteria in the gut microbiome within and across hosts.

Nandita R Garud, Benjamin H Good, Oskar Hallatschek, Katherine S Pollard

Abstract read
In one paragraph

Article in PLoS biology, 2019. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 216 papers, 1 of them a synthesis that pooled it.

0numbers the graph read from it
0cells of the map it votes in
216citing 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

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

  1. Pooled it
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  11. Linkage of nucleotide and functional diversity varies across gut bacteria.Proceedings of the National Academy of Sciences of the United States of America · 2026
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  15. bioRxiv : the preprint server for biology · 2026
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156 more citing papers are in PubMed but not listed here.

4 · The record

Corrections and comments

5 · Who and what money

Authors and funding

4 authors.

Nandita R GarudGladstone Institutes, San Francisco, California, United States of America.ORCID 0000-0003-4217-4407
Benjamin H GoodDepartment of Physics, University of California, Berkeley, Berkeley, California, United States of America.ORCID 0000-0002-7757-3347
Oskar HallatschekDepartment of Physics, University of California, Berkeley, Berkeley, California, United States of America.ORCID 0000-0002-1312-5975
Katherine S PollardGladstone Institutes, San Francisco, California, United States of America.ORCID 0000-0002-9870-6196

Funding

Resolving the Mechano-Chemical Regulation of Microbial Populations in Microfluidic DevicesR01GM115851 · NIGMS · UNIVERSITY OF CALIFORNIA BERKELEY · PI HALLATSCHEK, OSKAR · 2015 to 2023
$2.2M
KITP Interdisciplinary Biology InitiativeR25GM067110 · NIGMS · UNIVERSITY OF CALIFORNIA SANTA BARBARA · PI SHRAIMAN, BORIS I · 2003 to 2018
$1.8M
NIGMS NIH HHS R01 GM115851NIGMS NIH HHS R25 GM067110
6 · The paper itself

Abstract

Gut microbiota are shaped by a combination of ecological and evolutionary forces. While the ecological dynamics have been extensively studied, much less is known about how species of gut bacteria evolve over time. Here, we introduce a model-based framework for quantifying evolutionary dynamics within and across hosts using a panel of metagenomic samples. We use this approach to study evolution in approximately 40 prevalent species in the human gut. Although the patterns of between-host diversity are consistent with quasi-sexual evolution and purifying selection on long timescales, we identify new genealogical signatures that challenge standard population genetic models of these processes. Within hosts, we find that genetic differences that accumulate over 6-month timescales are only rarely attributable to replacement by distantly related strains. Instead, the resident strains more commonly acquire a smaller number of putative evolutionary changes, in which nucleotide variants or gene gains or losses rapidly sweep to high frequency. By comparing these mutations with the typical between-host differences, we find evidence that some sweeps may be seeded by recombination, in addition to new mutations. However, comparisons of adult twins suggest that replacement eventually overwhelms evolution over multi-decade timescales, hinting at fundamental limits to the extent of local adaptation. Together, our results suggest that gut bacteria can evolve on human-relevant timescales, and they highlight the connections between these short-term evolutionary dynamics and longer-term evolution across hosts.

Indexed as

BacteriaBiological EvolutionComputer SimulationEcologyEvolution, MolecularGastrointestinal MicrobiomeGenetic VariationHumansMicrobiota

Identifiers

PMID30673701
PMCPMC6361464

What OpenQuestion holds

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LicenceCC BY
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.