igh chromosomal mobility of rDNA clusters in holocentric chromosomes of Triatominae, vectors of Chagas disease (Hemiptera-Reduviidae

Autor(es):Mostrar menos -

Pita, S. ^[1] ; Lorite, P. ^[2] ; Cuadrado, A. ^[3] ; Panzera, Y. ^[1] ; De Oliveira, J. ^[4] ; Alevi, K. C. C. ^[5] ; Rosa, J. A. ^[5] ; Freitas, S. P. C. ^[6] ; Gomez-Palacio, A. ^[7] ; Solari, A. ^[8] ; Monroy, C. ^[9] ; Dorn, P. L. ^[10] ; Cabrera-Bravo, M. ^[11] ; Panzera, F. ^[1]

Afiliação do(s) autor(es):Mostrar menos -

^[1] Univ Republica, Fac Ciencias, Secc Genet Evolut, Calle Igua 4225, Montevideo 11400 - Uruguay

^[2] Univ Jaen, Dept Expt Biol, Genet, Jaen - Spain

^[3] Univ Alcala De Henares, Dept Biomed & Biotechnol, Madrid - Spain

^[4] Univ Sao Paulo, Dept Epidemiol, Lab Entomol Saude Publ, Fac Saude Publ, Sao Paulo - Brazil

^[5] Univ Estadual Paulista Julio de Mesquita Filho Un, Fac Ciencias Farmaceut, Sao Paulo - Brazil

^[6] Fundacao Oswaldo Cruz, Teresina - Brazil

^[7] Univ Pedag & Tecnol Colombia, Lab Invest Genet Evolut LIGE, Tunja - Colombia

^[8] Univ Chile, Fac Med, Programa Biol Celular & Mol, ICBM, Santiago - Chile

^[9] Univ San Carlos, Fac Farm, Lab Entomol Aplicada & Parasitol, Escuela Biol, Guatemala City - Guatemala

^[10] Loyola Univ New Orleans, Dept Biol Sci, New Orleans, LA - USA

^[11] Univ Nacl Autonoma Mexico, Fac Med, Dept Microbiol & Parasitol, Mexico City, DF - Mexico

• Tipo de documento: Artigo Científico
• Fonte: Medical and Veterinary Entomology; v. 36, n. 1 NOV 2021.
• Citações Web of Science: 3

Resumo

The subfamily Triatominae (Hemiptera-Reduviidae) includes more than 150 blood-sucking species, potential vectors of the protozoan Trypanosoma cruzi, causative agent of Chagas disease. A distinctive cytogenetic characteristic of this group is the presence of extremely stable chromosome numbers. Unexpectedly, the analyses of the chromosomal location of ribosomal gene clusters and other repetitive sequences place Triatominae as a significantly diverse hemipteran subfamily. Here, we advance the understanding of Triatominae chromosomal evolution through the analysis of the 45S rDNA cluster chromosomal location in 92 Triatominae species. We found the 45S rDNA clusters in one to four loci per haploid genome with different chromosomal patterns: On one or two autosomes, on one, two or three sex chromosomes, on the X chromosome plus one to three autosomes. The movement of 45S rDNA clusters is discussed in an evolutionary context. Our results illustrate that rDNA mobility has been relatively common in the past and in recent evolutionary history of the group. The high frequency of rDNA patterns involving autosomes and sex chromosomes among closely related species could affect genetic recombination and the viability of hybrid populations, which suggests that the mobility of rDNA clusters could be a driver of species diversification. (AU)

• Processo FAPESP: 17/05015-7 - Estudo sobre hibridização em Triatoma sordida (Stal, 1859) (Hemiptera, Reduviidae): dinâmica evolutiva, viabilidade reprodutiva, caracterização morfo-molecular e suas implicações taxonômicas
• Beneficiário: Kaio Cesar Chaboli Alevi
• Modalidade de apoio: Bolsas no Brasil - Pós-Doutorado
• Processo FAPESP: 19/02145-2 - Analise da estrutura genética de cruzamentos interespecíficos utilizando especies do gênero Mepraia (Hemiptera, Reduviidae, Triatominae).
• Beneficiário: Jader de Oliveira
• Modalidade de apoio: Bolsas no Brasil - Pós-Doutorado