Genomic diversity in the Leishmania donovani complex.
The Leishmania donovani complex is considered to be composed of 3 species; L. donovani, L. infantum and L. chagasi, although this classification has been challenged. Genotypic relationships within the complex were evaluated at different levels by: binding of the probe Lmet9, specific for L. chagasi and Old World Leishmania spp.; partial sequencing of a constitutive major surface protease single gene (mspC) and random amplification of polymorphic DNA (RAPD). The Old World Leishmania spp. and the L. donovani complex have a monophyletic origin. Leishmania chagasi clearly belongs to the L. donovani complex but it is indistinguishable from L. infantum, which suggests introduction of L. chagasi into the New World in recent history. Leishmania infantum/L. chagasi was identified as a monophyletic group within the L. donovani complex but L. donovani may be paraphyletic. Diversity within L. donovani is substantial and phylogeographical patterns of association were found.
Mauricio
I L
IL
Department of Infectious and Tropical Diseases, London School of Hygiene and Tropical Medicine, UK. i.mauricio@ishtm.ac.uk
Howard
M K
MK
Stothard
J R
JR
Miles
M A
MA
D000818:Animals; D001483:Base Sequence; D016000:Cluster Analysis; D017931:DNA Primers / Q000737:chemistry; D015342:DNA Probes / Q000737:chemistry; D016054:DNA, Protozoan / Q000737:chemistry; D004587:Electrophoresis, Agar Gel; D014644:Genetic Variation / Q000235:genetics*; D006801:Humans; D007893:Leishmania donovani / Q000145:classification / Q000235:genetics*; D018314:Leishmania infantum / Q000145:classification / Q000235:genetics*; D007898:Leishmaniasis, Visceral / Q000469:parasitology*; D008969:Molecular Sequence Data; D009693:Nucleic Acid Hybridization; D010802:Phylogeny; D019105:Random Amplified Polymorphic DNA Technique; D017421:Sequence Analysis
D017931:DNA Primers; D015342:DNA Probes; D016054:DNA, Protozoan