Figure 7.
Scan for allele frequency divergence across the Plasmodium falciparum genome between Mauritania (65 clinical isolates) and a more highly endemic population in Guinea (105 clinical isolates), as measured by FST with 69 913 SNPs genomewide. The mean genomewide FST was 0.004, but nine SNPs had FST values >0.2, clustered in 4 loci (labelled a to d) on chromosomes 4, 5, 7 and 8: (a) one SNP on chromosome (chr) 4 within the Rh1 gene (PF3D7_0402300; SNP position 138308, nonsynonymous E191K), (b) one SNP on chr 5 located 4.1 kb from the drug resistance gene mdr1, (c) 5 SNPs on chr 7 located 2.8–8.9 kb from the drug resistance gene crt, (d) two SNPs 3.7 kb apart on chr 8 with one in the drug resistance gene dhps (PF3D7_0810800; SNP position 549 685, nonsynonymous codon G437A having a known role in conferring resistance to sulfadoxine).