Evidence map›Paper›PMID 24889615›Full record

ArticleProceedings of the National Academy of Sciences of the United States of America2014

The Irish potato famine pathogen Phytophthora infestans originated in central Mexico rather than the Andes.

Erica M Goss, Javier F Tabima, David E L Cooke, Silvia Restrepo, William E Fry, Gregory A Forbes, Valerie J Fieland, Martha Cardenas, Niklaus J Grünwald

Abstract readHistorical Article
In one paragraph

Article in Proceedings of the National Academy of Sciences of the United States of America, 2014. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 76 papers, 1 of them a synthesis that pooled it.

0numbers the graph read from it
0cells of the map it votes in
76citing papers in PubMed, 1 pooled it
–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

76 citing papers in PubMed, 1 synthesis or guideline pooled it.

  1. Pooled it
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  5. Article
  6. Review
  7. The center of wheat domestication drives diversity ofApplied and environmental microbiology · 2025
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  9. The genetic legacy of a global marine invader.Proceedings of the National Academy of Sciences of the United States of America · 2025
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  10. Review
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  13. Genomic profiles ofFrontiers in plant science · 2025
    Article
  14. Review
  15. Review
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  17. Article
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  19. Review
  20. Hiding in plain sight: Genome-wide recombination and a dynamic accessory genome drive diversity inProceedings of the National Academy of Sciences of the United States of America · 2023
    Article

16 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

9 authors.

Erica M GossDepartment of Plant Pathology and Emerging Pathogens Institute, University of Florida, Gainesville, FL 32611;
Javier F TabimaDepartment of Botany and Plant Pathology, Oregon State University, Corvallis, OR 97331;
David E L CookeThe James Hutton Institute, Invergowrie, Dundee DD2 5DA, Scotland;
Silvia RestrepoDepartment of Biological Sciences, University of the Andes, 110321 Bogota, Colombia;
William E FryDepartment of Plant Pathology and Plant-Microbe Biology, Cornell University, Ithaca, NY 14853;
Gregory A ForbesCIP China Center for Asia and the Pacific, International Potato Center, Beijing 100081, China;
Valerie J FielandDepartment of Botany and Plant Pathology, Oregon State University, Corvallis, OR 97331;
Martha CardenasDepartment of Biological Sciences, University of the Andes, 110321 Bogota, Colombia;
Niklaus J GrünwaldHorticultural Crops Research Laboratory, US Department of Agriculture Agricultural Research Service, Corvallis, OR 97330; andDepartment of Botany and Plant Pathology and Center for Genome Biology and Biocomputing, Oregon State University, Corvallis, OR 97331 grunwaln@science.oregonstate.edu.

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

Phytophthora infestans is a destructive plant pathogen best known for causing the disease that triggered the Irish potato famine and remains the most costly potato pathogen to manage worldwide. Identification of P. infestan's elusive center of origin is critical to understanding the mechanisms of repeated global emergence of this pathogen. There are two competing theories, placing the origin in either South America or in central Mexico, both of which are centers of diversity of Solanum host plants. To test these competing hypotheses, we conducted detailed phylogeographic and approximate Bayesian computation analyses, which are suitable approaches to unraveling complex demographic histories. Our analyses used microsatellite markers and sequences of four nuclear genes sampled from populations in the Andes, Mexico, and elsewhere. To infer the ancestral state, we included the closest known relatives Phytophthora phaseoli, Phytophthora mirabilis, and Phytophthora ipomoeae, as well as the interspecific hybrid Phytophthora andina. We did not find support for an Andean origin of P. infestans; rather, the sequence data suggest a Mexican origin. Our findings support the hypothesis that populations found in the Andes are descendants of the Mexican populations and reconcile previous findings of ancestral variation in the Andes. Although centers of origin are well documented as centers of evolution and diversity for numerous crop plants, the number of plant pathogens with a known geographic origin are limited. This work has important implications for our understanding of the coevolution of hosts and pathogens, as well as the harnessing of plant disease resistance to manage late blight.

Indexed as

Evolution, MolecularAlgorithmsBayes TheoremColombiaEcuadorGenotypeGeographyHistory, 19th CenturyHumansIrelandMexicoMicrosatellite RepeatsMolecular Sequence DataPeruPhylogenyPhytophthora infestansbiological invasioncoalescent analysisoomycetepopulation geneticsstramenopile

Identifiers

PMID24889615
PMCPMC4066499

What OpenQuestion holds

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Read underepoch 390

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.