Analysis of nuclear and organellar genomes of Plasmodium knowlesi in humans reveals ancient population structure and recent recombination among host-specific subpopulations

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Diez Benavente, E, Florez de Sessions, P, Moon, RW, Holder, AA, Blackman, MJ, Roper, C, Drakeley, CJ, Pain, A, Sutherland, CJ, Hibberd, ML, Campino, S and Clark, TG. 2017. Analysis of nuclear and organellar genomes of Plasmodium knowlesi in humans reveals ancient population structure and recent recombination among host-specific subpopulations. [Online]. Figshare. Available from: - https://doi.org/10.1371/journal.pgen.1007008

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The macaque parasite Plasmodium knowlesi is a significant concern in Malaysia where cases of human infection are increasing. Parasites infecting humans originate from genetically distinct subpopulations associated with the long-tailed (Macaca fascicularis (Mf)) or pig-tailed macaques (Macaca nemestrina (Mn)). We used a new high-quality reference genome to re-evaluate previously described subpopulations among human and macaque isolates from Malaysian-Borneo and Peninsular-Malaysia. Nuclear genomes were dimorphic, as expected, but new evidence of chromosomal-segment exchanges between subpopulations was found. A large segment on chromosome 8 originating from the Mn subpopulation and containing genes encoding proteins expressed in mosquito-borne parasite stages, was found in Mf genotypes. By contrast, non-recombining organelle genomes partitioned into 3 deeply branched lineages, unlinked with nuclear genomic dimorphism. Subpopulations which diverged in isolation have re-connected, possibly due to deforestation and disruption of wild macaque habitats. The resulting genomic mosaics reveal traits selected by host-vector-parasite interactions in a setting of ecological transition.

Published in a 3rd party system Date: 22 September 2017
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Data Creators(s): Diez Benavente, E, Florez de Sessions, P, Moon, RW, Holder, AA, Blackman, MJ, Roper, C, Drakeley, CJ, Pain, A, Sutherland, CJ, Hibberd, ML, Campino, S and Clark, TG
LSHTM Faculty/Department: Faculty of Epidemiology and Population Health > Dept of Infectious Disease Epidemiology
Faculty of Infectious and Tropical Diseases > Dept of Immunology and Infection
Faculty of Infectious and Tropical Diseases > Dept of Pathogen Molecular Biology
Participating Institutions: London School of Hygiene & Tropical Medicine, London, United Kingdom, Genome Institute of Singapore, Biopolis, Singapore, The Francis Crick Institute, London, United Kingdom, King Abdullah University of Science and Technology, Thuwal, Kingdom of Saudi Arabia, Institute of Singapore, Biopolis, Singapore

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