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  • About
  • The Global ETD Search service is a free service for researchers to find electronic theses and dissertations. This service is provided by the Networked Digital Library of Theses and Dissertations.
    Our metadata is collected from universities around the world. If you manage a university/consortium/country archive and want to be added, details can be found on the NDLTD website.
1

Diversidade, taxonomia e filogenia de tripanossomatídeos da subfamilia Leishmaniinae. / Diversity, taxonomy and phylogeny of trypanosomatids of Leishmaniinae subfamily.

Dominguez, Omar Ariel Espinosa 25 September 2015 (has links)
A subfamília Leishmaniinae compreende espécies de tripanossomatídeos dos gêneros Crithidia, Leptomonas, Endotrypanum e Leishmania. O objetivo deste estudo foi caracterizar isolados da subfamília Leishmaniinae através de DNA Barcoding e inferir suas relações filogenéticas utilizando os genes SSUrDNA, gGAPDH, CATB, HSP70 e ITS1rDNA como marcadores genéticos. As espécies estudadas foram segregadas em dois clados principais, um formado por Endotrypanum-Leishmania e genótipos de L. costarricensis posicionados como clado basal. E outro clado que contém espécies monoxênicas as quais foram separados em diferentes subclados (Crithidia, Leptomonas, Lotmaria, Termófilo e três subclados homogêneos representados por C. inconstans, C. acanthocephali e isolados de Rondônia). No gênero Leishmania as análises posicionaram as espécies pouco estudadas do complexo L. enriettii como o grupo mais basal. Os isolados de lagartos Moçambique formaram um grupo monofilético com as espécies do subgênero L. (Sauroleishmania), corroborando, também, sua relação com o subgênero L. (Leishmania). / The Leishmaniinae subfamily comprises trypanosomatid species from genera Crithidia, Leptomonas, Endotrypanum and Leishmania. The aim of this study was to characterize Leishmaniinae isolates through DNA Barcoding and further infer their phylogenetic relationships using SSUrDNA, gGAPDH, CATB, HSP70 and ITS1rDNA genes as genetic markers. The Leishmaniinae species was segregated into two major clades, one formed by Endotrypanum-Leishmania with L. costarricensis genotypes resolving as a basal clade. The other clade contained the monoxenic species which were separated in different subclades (Crithidia, Leptomonas, Lotmaria, Termofilo, and three homogeneous subclades represented by C. inconstans, C. acanthocephali and Rondônia isolates). In Leishmania genus analyzes positioned the poorly investigated species of the complex L. enriettii as the most basal group. Isolates from Mozambique lizards formed a monophyletic group with the species of the subgenus L. (Sauroleishmania), was corroborated its relationship to the subgenus L. (Leishmania) too.

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