Evidence map›Paper›PMID 32385269›Full record

ArticleNature communications2020

Chromosome-level assembly of the horseshoe crab genome provides insights into its genome evolution.

Prashant Shingate, Vydianathan Ravi, Aravind Prasad, Boon-Hui Tay, Kritika M Garg, Balaji Chattopadhyay, Laura-Marie Yap, Frank E Rheindt, Byrappa Venkatesh

Open access · goldAbstract read
In one paragraph

Article in Nature communications, 2020. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 36 papers.

0numbers the graph read from it
0cells of the map it votes in
36citing papers in PubMed
5.3field-weighted citation impact, top 3% 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

36 citing papers in PubMed, 96 citations in OpenAlex.

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  5. Gene and Genome Duplication in Spiders.Journal of experimental zoology. Part B, Molecular and developmental evolution · 2025
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  15. Article
  16. An improved assembly of the "Cascade" hop (Horticulture research · 2023
    Article
  17. Transcriptomic Signature of Horseshoe CrabCurrent issues in molecular biology · 2022
    Article
  18. Article
  19. Article
  20. Conservation and Divergence ofInternational journal of molecular sciences · 2022
    Article
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

9 authors at 3 institutions in 1 country.

Prashant ShingateComparative and Medical Genomics Laboratory, Institute of Molecular and Cell Biology, A*STAR, Biopolis, Singapore, 138673, Singapore.ORCID http://orcid.org/0000-0003-4883-1279
Vydianathan RaviComparative and Medical Genomics Laboratory, Institute of Molecular and Cell Biology, A*STAR, Biopolis, Singapore, 138673, Singapore.ORCID http://orcid.org/0000-0003-0807-7697
Aravind PrasadComparative and Medical Genomics Laboratory, Institute of Molecular and Cell Biology, A*STAR, Biopolis, Singapore, 138673, Singapore.
Boon-Hui TayComparative and Medical Genomics Laboratory, Institute of Molecular and Cell Biology, A*STAR, Biopolis, Singapore, 138673, Singapore.
Kritika M GargDepartment of Biological Sciences, National University of Singapore, Singapore, 117543, Singapore.ORCID http://orcid.org/0000-0003-3510-3408
Balaji ChattopadhyayDepartment of Biological Sciences, National University of Singapore, Singapore, 117543, Singapore.ORCID http://orcid.org/0000-0002-4423-3127
Laura-Marie YapSchool of Applied Sciences, Republic Polytechnic, Singapore, 738964, Singapore.
Frank E RheindtDepartment of Biological Sciences, National University of Singapore, Singapore, 117543, Singapore.ORCID http://orcid.org/0000-0002-4575-1487
Byrappa VenkateshComparative and Medical Genomics Laboratory, Institute of Molecular and Cell Biology, A*STAR, Biopolis, Singapore, 138673, Singapore. mcbbv@imcb.a-star.edu.sg.ORCID http://orcid.org/0000-0003-3620-0277
Agency for Science, Technology and Research · SGNational University of Singapore · SGRepublic Polytechnic · SG

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

The evolutionary history of horseshoe crabs, spanning approximately 500 million years, is characterized by remarkable morphological stasis and a low species diversity with only four extant species. Here we report a chromosome-level genome assembly for the mangrove horseshoe crab (Carcinoscorpius rotundicauda) using PacBio reads and Hi-C data. The assembly spans 1.67 Gb with contig N50 of 7.8 Mb and 98% of the genome assigned to 16 chromosomes. The genome contains five Hox clusters with 34 Hox genes, the highest number reported in any invertebrate. Detailed analysis of the genome provides evidence that suggests three rounds of whole-genome duplication (WGD), raising questions about the relationship between WGD and species radiation. Several gene families, particularly those involved in innate immunity, have undergone extensive tandem duplication. These expanded gene families may be important components of the innate immune system of horseshoe crabs, whose amebocyte lysate is a sensitive agent for detecting endotoxin contamination.

Indexed as

AnimalsEvolution, MolecularGenomeHigh-Throughput Nucleotide SequencingHorseshoe CrabsMultigene FamilyPhylogeny

Identifiers

PMID32385269
PMCPMC7210998
OpenAlexW3022662625

What OpenQuestion holds

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LicenceCC BY
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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.