Evidence map›Paper›PMID 31754114›Full record

ArticleNature communications2019

The genome of a subterrestrial nematode reveals adaptations to heat.

Deborah J Weinstein, Sarah E Allen, Maggie C Y Lau, Mariana Erasmus, Kathryn C Asalone, Kathryn Walters-Conte, Gintaras Deikus, Robert Sebra, Gaetan Borgonie, Esta van Heerden and 2 more

Open access · goldAbstract read
In one paragraph

Article in Nature communications, 2019. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 23 papers.

0numbers the graph read from it
0cells of the map it votes in
23citing papers in PubMed
2.5field-weighted citation impact, top 11% 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

23 citing papers in PubMed, 41 citations in OpenAlex.

  1. Climate change and plant genomic plasticity.TAG. Theoretical and applied genetics. Theoretische und angewandte Genetik · 2025
    Review
  2. Article
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  7. Temperature Effects on Expression Levels ofInternational journal of molecular sciences · 2024
    Article
  8. Review
  9. Novel thermophilic generaFrontiers in microbiology · 2024
    Article
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  11. Article
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  18. Review
  19. Article
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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

12 authors at 4 institutions in 3 countries.

Deborah J WeinsteinBiology Department, American University, Washington, DC, 20016, USA.
Sarah E AllenBiology Department, American University, Washington, DC, 20016, USA.ORCID http://orcid.org/0000-0002-1646-629X
Maggie C Y LauDepartment of Geosciences, Princeton University, Princeton, NJ, 08544, USA.ORCID http://orcid.org/0000-0003-2812-9749
Mariana ErasmusUFS/TIA Saense Platform, Department of Microbial, Biochemical, and Food Biotechnology, University of the Free State, Bloemfontein, 9301, South Africa.ORCID http://orcid.org/0000-0003-2191-762X
Kathryn C AsaloneBiology Department, American University, Washington, DC, 20016, USA.ORCID http://orcid.org/0000-0002-6777-8701
Kathryn Walters-ConteBiology Department, American University, Washington, DC, 20016, USA.ORCID http://orcid.org/0000-0002-9171-349X
Gintaras DeikusDepartment of Genetics and Genomic Sciences and Icahn Institute for Genomics and Multiscale Biology, Icahn School of Medicine at Mount Sinai, New York, NY, 10029, USA.
Robert SebraDepartment of Genetics and Genomic Sciences and Icahn Institute for Genomics and Multiscale Biology, Icahn School of Medicine at Mount Sinai, New York, NY, 10029, USA.
Gaetan BorgonieExtreme Life Isyensya, Gentbrugge, 9050, Belgium.
Esta van HeerdenUFS/TIA Saense Platform, Department of Microbial, Biochemical, and Food Biotechnology, University of the Free State, Bloemfontein, 9301, South Africa.ORCID http://orcid.org/0000-0001-8170-4269
Tullis C OnstottDepartment of Geosciences, Princeton University, Princeton, NJ, 08544, USA.
John R BrachtBiology Department, American University, Washington, DC, 20016, USA. jbracht@american.edu.ORCID http://orcid.org/0000-0001-8042-7685
American University · USIcahn School of Medicine at Mount Sinai · USPrinceton University · USUniversity of the Free State · ZA

Funding

Model systems for the investigation of DNA methylation and drug repurposingK22CA184297 · NCI · AMERICAN UNIVERSITY · PI BRACHT, JOHN RUSSELL · 2014 to 2016
$457k
NCI NIH HHS K22 CA184297
6 · The paper itself

Abstract

The nematode Halicephalobus mephisto was originally discovered inhabiting a deep terrestrial aquifer 1.3 km underground. H. mephisto can thrive under conditions of abiotic stress including heat and minimal oxygen, where it feeds on a community of both chemolithotrophic and heterotrophic prokaryotes in an unusual ecosystem isolated from the surface biosphere. Here we report the comprehensive genome and transcriptome of this organism, identifying a signature of adaptation: an expanded repertoire of 70 kilodalton heat-shock proteins (Hsp70) and avrRpt2 induced gene 1 (AIG1) proteins. The expanded Hsp70 genes are transcriptionally induced upon growth under heat stress, and we find that positive selection is detectable in several members of this family. We further show that AIG1 may have been acquired by horizontal gene transfer (HGT) from a rhizobial fungus. Over one-third of the genes of H. mephisto are novel, highlighting the divergence of this nematode from other sequenced organisms. This work sheds light on the genomic basis of heat tolerance in a complete subterrestrial eukaryotic genome.

Indexed as

Heat-Shock ResponseAdaptation, PhysiologicalAnimalsEcosystemGene Expression RegulationGene OntologyGene Transfer, HorizontalGenome, HelminthHelminth ProteinsHSP70 Heat-Shock ProteinsNematodaPhylogenySoilStress, PhysiologicalTranscriptomeHelminth ProteinsHSP70 Heat-Shock ProteinsSoil

Identifiers

PMID31754114
PMCPMC6872716
OpenAlexW2991623431

What OpenQuestion holds

Textmetadata
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.