DOI: 10.1101/516211Jan 9, 2019Paper

Genomic analysis of natural intra-specific hybrids among Ethiopian isolates of Leishmania donovani

BioRxiv : the Preprint Server for Biology
James CottonMatthew Yeo

Abstract

Parasites of the genus Leishmania (Kinetoplastida: Trypanosomatidae) cause widespread and devastating human diseases, ranging from self-healing but disfiguring cutaneous lesions to destructive mucocutaneous presentations or usually fatal visceral disease. Visceral leishmaniasis due to Leishmania donovani is endemic in Ethiopia where it has also been responsible for major epidemics. The presence of hybrid genotypes has been widely reported in surveys of natural populations, genetic variation reported in a number of Leishmania species, and the extant capacity for genetic exchange demonstrated in laboratory experiments. However, patterns of recombination and evolutionary history of admixture that produced these hybrid populations remain unclear, as most of the relevant literature examines only a limited number (typically fewer than 10) genetic loci. Here, we use whole-genome sequence data to investigate Ethiopian L. donovani isolates previously characterised as hybrids by microsatellite and multi-locus sequencing. To date there is only one previous study on a natural population of Leishmania hybrids, based on whole-genome sequence. The current findings demonstrate important differences. We propose hybrids originate from recombinat...Continue Reading

Related Concepts

Chromosomes
Laboratory
Genus: Leishmania
Leishmania donovani
Leishmaniasis, Visceral
Literature
Parasites
Recombination, Genetic
Trypanosomatina
Wound Healing

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