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Otto, T.D.; Bohme, U.; Jackson, A.P.; Hunt, M.; Franke-Fayard, B.; Hoeijmakers, W.A.; Religa, A.A.; Robertson, L.; Sanders, M.; Ogun, S.A.; Cunningham, D.; Erhart, A.; Billker, O.; Khan, S.M.; Stunnenberg, H.G.; Langhorne, J.; Holder, A.A.; Waters, A.P.; Newbold, C.I.; Pain, A.; Berriman, M.; Janse, C.J. (2014)
Publisher: BioMed Central
Journal: BMC Biology
Types: Article
Subjects: Genomes, Multigene families, Research Article, Plasmodium chabaudi, Plasmodium yoelii, Phylogeny, Genotypic diversity, Plasmodium berghei, pirs, RNA-seq

Classified by OpenAIRE into

mesheuropmc: parasitic diseases
Background Rodent malaria parasites (RMP) are used extensively as models of human malaria. Draft RMP genomes have been published for Plasmodium yoelii, P. berghei ANKA (PbA) and P. chabaudi AS (PcAS). Although availability of these genomes made a significant impact on recent malaria research, these genomes were highly fragmented and were annotated with little manual curation. The fragmented nature of the genomes has hampered genome wide analysis of Plasmodium gene regulation and function. Results We have greatly improved the genome assemblies of PbA and PcAS, newly sequenced the virulent parasite P. yoelii YM genome, sequenced additional RMP isolates/lines and have characterized genotypic diversity within RMP species. We have produced RNA-seq data and utilised it to improve gene-model prediction and to provide quantitative, genome-wide, data on gene expression. Comparison of the RMP genomes with the genome of the human malaria parasite P. falciparum and RNA-seq mapping permitted gene annotation at base-pair resolution. Full-length chromosomal annotation permitted a comprehensive classification of all subtelomeric multigene families including the ‘Plasmodium interspersed repeat genes’ (pir). Phylogenetic classification of the pir family, combined with pir expression patterns, indicates functional diversification within this family. Conclusions Complete RMP genomes, RNA-seq and genotypic diversity data are excellent and important resources for gene-function and post-genomic analyses and to better interrogate Plasmodium biology. Genotypic diversity between P. chabaudi isolates makes this species an excellent parasite to study genotype-phenotype relationships. The improved classification of multigene families will enhance studies on the role of (variant) exported proteins in virulence and immune evasion/modulation. Electronic supplementary material The online version of this article (doi:10.1186/s12915-014-0086-0) contains supplementary material, which is available to authorized users.

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Funded by projects

  • NWO | (Epi)genetic regulation of ...
  • WT | Antigenic variation in malar...
  • WT | Conditional Translational Re...
  • WT | Wellcome Trust Sanger Instit...
  • EC | EVIMALAR

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