Preponderant clonal evolution of Trypanosoma cruzi I from Argentinean Chaco revealed by Multilocus Sequence Typing (MLST)
| Autor: | Paula G. Ragone, Nicolás Tomasini, Juan José Lauthier, Patricio Diosque, Anahí M. Alberti D’Amato, Miguel A. Basombrío, Maria Mercedes Monje Rumi, Cecilia Pérez Brandán |
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| Jazyk: | angličtina |
| Rok vydání: | 2014 |
| Předmět: |
RNA
Spliced Leader Microbiology (medical) Lineage (genetic) CIENCIAS MÉDICAS Y DE LA SALUD Genotype Trypanosoma cruzi Molecular Sequence Data Argentina Ciencias de la Salud Microbiology Linkage Disequilibrium Evolution Molecular Intergenic region Genetics Humans Chagas Disease Molecular Biology Alleles Phylogeny Ecology Evolution Behavior and Systematics Polymorphism Genetic biology Genetic Variation biology.organism_classification INTERCAMBIO GENÉTICO RAPD Enfermedades Infecciosas Infectious Diseases Genetic Loci Genetic marker TCI Genetic structure Multilocus sequence typing DNA Intergenic ENFERMEDAD DE CHAGAS Multilocus Sequence Typing MLST |
| Popis: | Trypanosoma cruzi has been historically classified as a species with preponderant clonal evolution (PCE). However, with the advent of highly polymorphic markers and studies at geographically reduced scales,the PCE in T. cruzi was challenged. In fact, some studies have suggested that recombination in T. cruzi lineage I (TcI) is much more frequent than previously believed. Further analyses of TcI populations from different geographical regions of Latin America are needed to examine this hypothesis. In the present study,we contribute to this topic by analyzing the population structure of TcI from a restricted geographical area in the Chaco region, Argentina. We analyzed TcI isolates from different hosts and vectors using a Multilocus Sequence Typing (MLST) approach. These isolates were previously characterized by sequencing the spliced leader intergenic region (SL-IR). Low levels of incongruence and well-supported clusters for MLST dataset were obtained from the analyses. Moreover, high linkage disequilibrium was found and five repeated and overrepresented genotypes were detected. In addition, a good correspondence between SL-IR and MLST was observed which is expected under PCE. However, recombination is not ruled out because five out of 28 pairs of loci were incompatible with strict clonality and one possible genetic exchange event was detected. Overall, our results represent evidence of PCE in TcI from the study area.Finally, considering our findings we discuss the scenario for the genetic structure of TcI. Fil: Tomasini, Nicolás. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Salta. Instituto de Patología Experimental; Argentina. Universidad Nacional de Salta; Argentina Fil: Lauthier, Juan José. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Salta. Instituto de Patología Experimental; Argentina. Universidad Nacional de Salta; Argentina Fil: Monje Rumi, Maria Mercedes. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Salta. Instituto de Patología Experimental; Argentina. Universidad Nacional de Salta; Argentina Fil: Ragone, Paula Gabriela. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Salta. Instituto de Patología Experimental; Argentina. Universidad Nacional de Salta; Argentina Fil: Alberti D'amato, Anahi M.. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Salta. Instituto de Patología Experimental; Argentina. Universidad Nacional de Salta; Argentina Fil: Perez Brandan, Cecilia Maria. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Salta. Instituto de Patología Experimental; Argentina. Universidad Nacional de Salta; Argentina Fil: Basombrio, Miguel Angel Manuel. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Salta. Instituto de Patología Experimental; Argentina. Universidad Nacional de Salta; Argentina Fil: Diosque, Patricio. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Salta. Instituto de Patología Experimental; Argentina. Universidad Nacional de Salta; Argentina |
| Databáze: | OpenAIRE |
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