Chromosome-wide SNPs reveal an ancient origin for Plasmodium falciparum

Jianbing Mu, Junhui Duan, Kateryna D. Makova, Deirdre A. Joy, Chuong Q. Huynh, Oralee H. Branch, Wen-Hsiung Li and Xin-zhuan Su ()
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Jianbing Mu: National Institutes of Health
Junhui Duan: National Institutes of Health
Kateryna D. Makova: University of Chicago
Deirdre A. Joy: National Institutes of Health
Oralee H. Branch: National Library of Medicine, National Institutes of Health
Wen-Hsiung Li: University of Chicago
Xin-zhuan Su: National Institutes of Health

Nature, 2002, vol. 418, issue 6895, 323-324

Abstract: 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.

Date: 2002
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DOI: 10.1038/nature00836

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