Abstract
The Malaria's Eve hypothesis, proposing a severe recent population bottleneck (about 3,000–5,000 years ago) of the human malaria parasite Plasmodium falciparum, has prompted a debate about the origin and evolution of the parasite1,2,3,4,5,6. The hypothesis implies that the parasite population is relatively homogeneous, favouring malaria control measures. Other studies, however, suggested an ancient origin and large effective population size5,7,8,9,10. To test the hypothesis, we analysed single nucleotide polymorphisms (SNPs) from 204 genes on chromosome 3 of P. falciparum. We have identified 403 polymorphic sites, including 238 SNPs and 165 microsatellites, from five parasite clones, establishing chromosome-wide haplotypes and a dense map with one polymorphic marker per ∼2.3 kilobases. On the basis of synonymous SNPs and non-coding SNPs, we estimate the time to the most recent common ancestor to be ∼100,000–180,000 years, significantly older than the proposed bottleneck. Our estimated divergence time coincides approximately with the start of human population expansion11, and is consistent with a genetically complex organism able to evade host immunity and other antimalarial efforts.
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Acknowledgements
We thank T. Anderson, A. Saul, K. Hayton and J. Ribeiro for critical reading of the manuscript, and B. Marshall for editorial assistance. We also thank J. Wootton for supporting O.H.B. This work was partially supported by the NIH (W.-H.L.).
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Mu, J., Duan, J., Makova, K. et al. Chromosome-wide SNPs reveal an ancient origin for Plasmodium falciparum. Nature 418, 323–324 (2002). https://doi.org/10.1038/nature00836
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DOI: https://doi.org/10.1038/nature00836
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