Trypanosoma rangeli: parity between phylogenetic relationships based on spliced leader and ribosomal sequences and congruency with vector phylogenies support lineages associated to ecogeographical structure of rhodniini species (2005)
- Authors:
- Autor USP: TEIXEIRA, MARTA MARIA GERALDES - ICB
- Unidade: ICB
- Assunto: PARASITOLOGIA
- Language: Inglês
- Abstract: Aims: T. rangeli infects humans, domestic and sylvatic mammals from Central and South America sharing with T. cruzi the same mammalian hosts and triatomine vectors in overlapping areas. Phylogeny based on ribosomal sequences suggested association between T. rangeli lineages and geographic origin, transmission cycles and complexes of Rhodnius spp. In this study we analyzed the SL sequences from T. rangeli isolates aiming: a) to estimate the degree of genetic relatedness among isolates from mammals and Rhodnius spp; b) to assess the consistency of T. rangeli lineages through parity analysis between SL and ribosomal markers; c)to evaluate cophylogenetic events through phylogeographical analysis and by confronting vector and parasite phylogenies; d)to define SL sequences for diagnosis and genotyping of T. rangeli. Methods and Results: Analysis of genetic relationships among isolates of overall phylogenetic diversity and geographical range of T. rangeli based on SL intergenic sequences supported four lineages of isolates, congruent with the phylogenetic tree based on SSU rRNA sequences. Congruent phylogenies of T. rangeli lineages and Rhodniini complex suggested lineage divergence according to ecogeographical structure together with their sympatric Rhodnius spp. A PCR developed based on SL intergenic sequences is suitable for simultaneous identification and genotyping of T. rangeli lineages. Conclusion: Comparative analysis showed total parity of lineages definedby SL and ribosomal genes suggesting clonal propagation of T. rangeli populations. These lineages show no relationships with the mammalian host-species, whereas appear to be related to triatomine species of Rhodniini, presenting patterns of segregation compatible with ecogeographical vector structure
- Imprenta:
- Publisher: Comissão de Cultura e Extensão Universitária do ICB/USP
- Publisher place: São Paulo
- Date published: 2005
- Source:
- Título do periódico: Resumos
- Conference titles: Congresso do Instituto de Ciências Biomédicas
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ABNT
MAIA DA SILVA, F. et al. Trypanosoma rangeli: parity between phylogenetic relationships based on spliced leader and ribosomal sequences and congruency with vector phylogenies support lineages associated to ecogeographical structure of rhodniini species. 2005, Anais.. São Paulo: Comissão de Cultura e Extensão Universitária do ICB/USP, 2005. . Acesso em: 18 abr. 2024. -
APA
Maia da Silva, F., Junqueira, A. C. V., Campaner, M., Coura, J. R., & Teixeira, M. M. G. (2005). Trypanosoma rangeli: parity between phylogenetic relationships based on spliced leader and ribosomal sequences and congruency with vector phylogenies support lineages associated to ecogeographical structure of rhodniini species. In Resumos. São Paulo: Comissão de Cultura e Extensão Universitária do ICB/USP. -
NLM
Maia da Silva F, Junqueira ACV, Campaner M, Coura JR, Teixeira MMG. Trypanosoma rangeli: parity between phylogenetic relationships based on spliced leader and ribosomal sequences and congruency with vector phylogenies support lineages associated to ecogeographical structure of rhodniini species. Resumos. 2005 ;[citado 2024 abr. 18 ] -
Vancouver
Maia da Silva F, Junqueira ACV, Campaner M, Coura JR, Teixeira MMG. Trypanosoma rangeli: parity between phylogenetic relationships based on spliced leader and ribosomal sequences and congruency with vector phylogenies support lineages associated to ecogeographical structure of rhodniini species. Resumos. 2005 ;[citado 2024 abr. 18 ] - Trypanosoma vivax: characterization of the spliced-leader gene of brazilian stock and species-specific detection by PCR amplification of an intergenic spacer sequence
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