Evolution of the parthenogenetic rock lizard hybrid karyotype: Robertsonian translocation between two maternal chromosomes in Darevskia rostombekowi

Autor(es):Mostrar menos -

Spangenberg, Victor ^[1] ; Kolomiets, Oxana ^[1] ; Stepanyan, Ilona ^[2] ; Galoyan, Eduard ^[3] ; Cioffi, Marcelo de Bello ^{[4, 5]} ; Martynova, Elena ^[6] ; Martirosyan, Irena ^[7] ; Grishaeva, Tatiana ^[1] ; Danielyan, Felix ^[8] ; Al-Rikabi, Ahmed ^[4] ; Liehr, Thomas ^[4] ; Arakelyan, Marine ^[8]

Afiliação do(s) autor(es)

^[1] RAS, Vavilov Inst Gen Genet, Gubkin 3, Moscow 119991 - Russia

^[2] Sci Ctr Zool & Hydroecol, Yerevan - Armenia

^[3] RAS, Severtsov Inst Ecol & Evolut, Moscow - Russia

^[4] Friedrich Schiller Univ, Jena Univ Hosp, Inst Human Genet, Jena - Germany

^[5] Univ Fed Sao Carlos, Dept Genet & Evolucao, LAb Citogenet Peixes, Sao Carlos, SP - Brazil

^[6] Skolkovo Inst Sci & Technol, Moscow - Russia

^[7] RAS, Inst Gene Biol, Moscow - Russia

^[8] Yerevan State Univ, Dept Zool, Yerevan - Armenia

• Tipo de documento: Artigo Científico
• Fonte: CHROMOSOMA; v. 129, n. 3-4, p. 275-283, DEC 2020.
• Citações Web of Science: 0

Resumo

Darevskia rostombekowi, the most outstanding of the seven known parthenogenetic species in the genus Darevskia, is the result of an ancestral cross between two bisexual species Darevskia raddei and Darevskia portschinskii. The chromosomal set of this species includes a unique submetacentric autosomal chromosome; the origin of this chromosome was unresolved as only acrocentric chromosomes are described in the karyotypes of Darevskia genus normally. Here, we applied a suite of molecular cytogenetic techniques, including the mapping of telomeric (TTAGGG) n repeats using fluorescence in situ hybridization (FISH), comparative genomic hybridization (CGH), and whole-chromosome painting (WCP) in both D. rostombekowi and parental (D. portschinskii and D. raddei) species. The obtained results in total suggest that a de novo chromosomal rearrangement via Robertsonian translocation (centric fusion) between two maternal (D. raddei) acrocentric chromosomes of different size was involved in the formation of this unique submetacentric chromosome present in the parthenogenetic species D. rostombekowi. Our findings provide new data in specific and rapid evolutional processes of a unisexual reptile species karyotype. (AU)

• Processo FAPESP: 18/22033-1 - Uma abordagem intercontinental para a investigação da evolução cromossômica, diversidade genética e biogeografia na ordem Osteoglossiformes (Teleostei: Osteoglossomorpha). Parte III.
• Beneficiário: Marcelo de Bello Cioffi
• Linha de fomento: Auxílio à Pesquisa - Regular