Evidence map›Paper›PMID 25713367›Full record

ArticleProceedings of the National Academy of Sciences of the United States of America2015

Heritable symbiosis: The advantages and perils of an evolutionary rabbit hole.

Gordon M Bennett, Nancy A Moran

Abstract read
In one paragraph

Article in Proceedings of the National Academy of Sciences of the United States of America, 2015. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 260 papers.

0numbers the graph read from it
0cells of the map it votes in
260citing papers in PubMed
–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

260 citing papers in PubMed.

  1. Article
  2. Phenotypic divergence is driven by mobile genetic elements in a heritable insect symbiont.Proceedings of the National Academy of Sciences of the United States of America · 2026
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  3. Article
  4. Review
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  13. Cellular remodeling of ovarian follicular epithelial cells transmits an obligate nutritional endosymbiont in a scale insect.Proceedings of the National Academy of Sciences of the United States of America · 2026
    Article
  14. Positive and relaxed selection on mitochondrial DNA in parasitic versus predatory mites.Philosophical transactions of the Royal Society of London. Series B, Biological sciences · 2026
    Article
  15. Article
  16. Article
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  18. Article
  19. Fidelity in co-diversified symbiosis.Nature communications · 2026
    Article
  20. Article

200 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

2 authors.

Gordon M BennettDepartment of Integrative Biology, University of Texas at Austin, Austin, TX 78712.
Nancy A MoranDepartment of Integrative Biology, University of Texas at Austin, Austin, TX 78712 nancy.moran@austin.utexas.edu.

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

Many eukaryotes have obligate associations with microorganisms that are transmitted directly between generations. A model for heritable symbiosis is the association of aphids, a clade of sap-feeding insects, and Buchnera aphidicola, a gammaproteobacterium that colonized an aphid ancestor 150 million years ago and persists in almost all 5,000 aphid species. Symbiont acquisition enables evolutionary and ecological expansion; aphids are one of many insect groups that would not exist without heritable symbiosis. Receiving less attention are potential negative ramifications of symbiotic alliances. In the short run, symbionts impose metabolic costs. Over evolutionary time, hosts evolve dependence beyond the original benefits of the symbiosis. Symbiotic partners enter into an evolutionary spiral that leads to irreversible codependence and associated risks. Host adaptations to symbiosis (e.g., immune-system modification) may impose vulnerabilities. Symbiont genomes also continuously accumulate deleterious mutations, limiting their beneficial contributions and environmental tolerance. Finally, the fitness interests of obligate heritable symbionts are distinct from those of their hosts, leading to selfish tendencies. Thus, genes underlying the host-symbiont interface are predicted to follow a coevolutionary arms race, as observed for genes governing host-pathogen interactions. On the macroevolutionary scale, the rapid evolution of interacting symbiont and host genes is predicted to accelerate host speciation rates by generating genetic incompatibilities. However, degeneration of symbiont genomes may ultimately limit the ecological range of host species, potentially increasing extinction risk. Recent results for the aphid-Buchnera symbiosis and related systems illustrate that, whereas heritable symbiosis can expand ecological range and spur diversification, it also presents potential perils.

Indexed as

SymbiosisAnimalsAphidsBiological EvolutionBuchneraEcologyEvolution, MolecularExtinction, BiologicalGammaproteobacteriaGenetic DriftGenomicsHost-Pathogen InteractionsImmune SystemInsectaMutationPhylogenyaphidBuchneracoevolutionMuller's ratchetselection levels

Identifiers

PMID25713367
PMCPMC4547261

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.