Evidence map›Paper›PMID 32658273›Full record

ArticleDNA research : an international journal for rapid publication of reports on genes and genomes2020

Insights into the evolution of symbiosis gene copy number and distribution from a chromosome-scale Lotus japonicus Gifu genome sequence.

Nadia Kamal, Terry Mun, Dugald Reid, Jie-Shun Lin, Turgut Yigit Akyol, Niels Sandal, Torben Asp, Hideki Hirakawa, Jens Stougaard, Klaus F X Mayer and 2 more

Abstract read
In one paragraph

Article in DNA research : an international journal for rapid publication of reports on genes and genomes, 2020. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 35 papers.

0numbers the graph read from it
0cells of the map it votes in
35citing 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

35 citing papers in PubMed.

  1. Advances in Genetic Transformation ofPlants (Basel, Switzerland) · 2026
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  3. Science advances · 2026
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  5. Gibberellin biosynthesis inFrontiers in plant science · 2026
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  9. Functional Genomics: From Soybean to Legume.International journal of molecular sciences · 2025
    Review
  10. Article
  11. Article
  12. Article
  13. Article
  14. Article
  15. Article
  16. Comparative Genomics ofPlants (Basel, Switzerland) · 2024
    Article
  17. Article
  18. Article
  19. Article
  20. 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

12 authors.

Nadia KamalHelmholtz Zentrum München, German Research Center for Environmental Health, Plant Genome and Systems Biology, 85764 Neuherberg, Germany.
Terry MunDepartment of Molecular Biology and Genetics, Aarhus University, DK-8000 Aarhus C, Denmark.
Dugald ReidDepartment of Molecular Biology and Genetics, Aarhus University, DK-8000 Aarhus C, Denmark.
Jie-Shun LinDepartment of Molecular Biology and Genetics, Aarhus University, DK-8000 Aarhus C, Denmark.
Turgut Yigit AkyolGraduate School of Life Sciences, Tohoku University, Sendai 980-8577, Japan.
Niels SandalDepartment of Molecular Biology and Genetics, Aarhus University, DK-8000 Aarhus C, Denmark.
Torben AspDepartment of Molecular Biology and Genetics, Aarhus University, DK-8000 Aarhus C, Denmark.
Hideki HirakawaKazusa DNA Research Institute, Kisarazu, Chiba 292-0816, Japan.
Jens StougaardDepartment of Molecular Biology and Genetics, Aarhus University, DK-8000 Aarhus C, Denmark.
Klaus F X MayerHelmholtz Zentrum München, German Research Center for Environmental Health, Plant Genome and Systems Biology, 85764 Neuherberg, Germany.
Shusei SatoGraduate School of Life Sciences, Tohoku University, Sendai 980-8577, Japan.
Stig Uggerhøj AndersenDepartment of Molecular Biology and Genetics, Aarhus University, DK-8000 Aarhus C, Denmark.

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

Lotus japonicus is a herbaceous perennial legume that has been used extensively as a genetically tractable model system for deciphering the molecular genetics of symbiotic nitrogen fixation. Our aim is to improve the L. japonicus reference genome sequence, which has so far been based on Sanger and Illumina sequencing reads from the L. japonicus accession MG-20 and contained a large fraction of unanchored contigs. Here, we use long PacBio reads from L. japonicus Gifu combined with Hi-C data and new high-density genetic maps to generate a high-quality chromosome-scale reference genome assembly for L. japonicus. The assembly comprises 554 megabases of which 549 were assigned to six pseudomolecules that appear complete with telomeric repeats at their extremes and large centromeric regions with low gene density. The new L. japonicus Gifu reference genome and associated expression data represent valuable resources for legume functional and comparative genomics. Here, we provide a first example by showing that the symbiotic islands recently described in Medicago truncatula do not appear to be conserved in L. japonicus.

Indexed as

ChromosomesGene DosageGene Expression Regulation, PlantGenes, PlantGenomicsLotusMedicagoMedicago truncatulaNitrogen FixationSymbiosiscomparative genomicsexpression atlaslegumerhizobiumsymbiosis

Identifiers

PMID32658273
PMCPMC7508351

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Registered trials

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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.