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

Author(s):Show less -

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]

Affiliation

^[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

• Document type: Journal article
• Source: CHROMOSOMA; v. 129, n. 3-4, p. 275-283, DEC 2020.
• Web of Science Citations: 0

Abstract

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)

• FAPESP's process: 18/22033-1 - An intercontinental approach for the investigation of chromosome evolution, genetic diversity and biogeography in the order Osteoglossiformes (Teleostei: Osteoglossomorpha). Part III
• Grantee: Marcelo de Bello Cioffi
• Support Opportunities: Regular Research Grants