Evidence map›Paper›PMID 32132540›Full record

ArticleNature communications2020

Gene clustering and copy number variation in alkaloid metabolic pathways of opium poppy.

Qiushi Li, Sukanya Ramasamy, Pooja Singh, Jillian M Hagel, Sonja M Dunemann, Xue Chen, Rongji Chen, Lisa Yu, Joseph E Tucker, Peter J Facchini and 1 more

Erratum issuedOpen 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. An erratum has been issued. Cited by 41 papers.

0numbers the graph read from it
0cells of the map it votes in
41citing papers in PubMed
4.2field-weighted citation impact, top 5% 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

41 citing papers in PubMed, 78 citations in OpenAlex.

  1. Article
  2. Structural Variation and Its Roles in Plant Genomes.Plants (Basel, Switzerland) · 2026
    Review
  3. Review
  4. Article
  5. Article
  6. Article
  7. Article
  8. Article
  9. Review
  10. Review
  11. The origins and spread of the opium poppy (Philosophical transactions of the Royal Society of London. Series B, Biological sciences · 2025
    Article
  12. Article
  13. Article
  14. Review
  15. Article
  16. Article
  17. Article
  18. Foods (Basel, Switzerland) · 2024
    Article
  19. Article
  20. Article
4 · The record

Corrections and comments

5 · Who and what money

Authors and funding

11 authors at 1 institution in 2 countries.

Qiushi LiDepartment of Biological Sciences, University of Calgary, Calgary, Alberta, T2N 1N4, Canada.ORCID http://orcid.org/0000-0001-7317-5168
Sukanya RamasamyDepartment of Biological Sciences, University of Calgary, Calgary, Alberta, T2N 1N4, Canada.
Pooja SinghDepartment of Biological Sciences, University of Calgary, Calgary, Alberta, T2N 1N4, Canada.
Jillian M HagelDepartment of Biological Sciences, University of Calgary, Calgary, Alberta, T2N 1N4, Canada.
Sonja M DunemannDepartment of Ecosystem and Public Health, University of Calgary, Calgary, Alberta, T2N 1N4, Canada.
Xue ChenDepartment of Biological Sciences, University of Calgary, Calgary, Alberta, T2N 1N4, Canada.
Rongji ChenDepartment of Biological Sciences, University of Calgary, Calgary, Alberta, T2N 1N4, Canada.
Lisa YuDepartment of Biological Sciences, University of Calgary, Calgary, Alberta, T2N 1N4, Canada.
Joseph E TuckerWillow Biosciences Inc., 3655 36 Street N.W., Calgary, Alberta, T2L 1Y8, Canada.
Peter J FacchiniDepartment of Biological Sciences, University of Calgary, Calgary, Alberta, T2N 1N4, Canada.ORCID http://orcid.org/0000-0002-7693-290X
Sam YeamanDepartment of Biological Sciences, University of Calgary, Calgary, Alberta, T2N 1N4, Canada. samuel.yeaman@ucalgary.ca.
University of Calgary · CA

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

Genes in plant secondary metabolic pathways enable biosynthesis of a range of medically and industrially important compounds, and are often clustered on chromosomes. Here, we study genomic clustering in the benzylisoquinoline alkaloid (BIA) pathway in opium poppy (Papaver somniferum), exploring relationships between gene expression, copy number variation, and metabolite production. We use Hi-C to improve the existing draft genome assembly, yielding chromosome-scale scaffolds that include 35 previously unanchored BIA genes. We find that co-expression of BIA genes increases within clusters and identify candidates with unknown function based on clustering and covariation in expression and alkaloid production. Copy number variation in critical BIA genes correlates with stark differences in alkaloid production, linking noscapine production with an 11-gene deletion, and increased thebaine/decreased morphine production with deletion of a T6ODM cluster. Our results show that the opium poppy genome is still dynamically evolving in ways that contribute to medically and industrially important phenotypes.

Indexed as

DNA Copy Number VariationsMultigene FamilyBenzylisoquinolinesEvolution, MolecularGene Expression Regulation, PlantGenome, PlantGenomicsMetabolic Networks and PathwaysPapaverSecondary MetabolismBenzylisoquinolines

Identifiers

PMID32132540
PMCPMC7055283
OpenAlexW3010107185

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.