Chromosome homologies of the highly rearranged karyotypes of four Akodon species (Rodentia, Cricetidae) resolved by reciprocal chromosome painting: the evolution of the lowest diploid number in rodents.

Chromosome Research : an International Journal on the Molecular, Supramolecular and Evolutionary Aspects of Chromosome Biology
K VenturaM A Ferguson-Smith

Abstract

Traditionally comparative cytogenetic studies are based mainly on banding patterns. Nevertheless, when dealing with species with highly rearranged genomes, as in Akodon species, or with other highly divergent species, cytogenetic comparisons of banding patterns prove inadequate. Hence, comparative chromosome painting has become the method of choice for genome comparisons at the cytogenetic level since it allows complete chromosome probes of a species to be hybridized in situ onto chromosomes of other species, detecting homologous genomic regions between them. In the present study, we have explored the highly rearranged complements of the Akodon species using reciprocal chromosome painting through species-specific chromosome probes obtained by chromosome sorting. The results revealed complete homology among the complements of Akodon sp. n. (ASP), 2n = 10; Akodon cursor (ACU), 2n = 15; Akodon montensis (AMO), 2n = 24; and Akodon paranaensis (APA), 2n = 44, and extensive chromosome rearrangements have been detected within the species with high precision. Robertsonian and tandem rearrangements, pericentric inversions and/or centromere repositioning, paracentric inversion, translocations, insertions, and breakpoints, where chromosom...Continue Reading

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Citations

Jun 20, 2012·Chromosome Research : an International Journal on the Molecular, Supramolecular and Evolutionary Aspects of Chromosome Biology·Karen VenturaMalcolm A Ferguson-Smith
Nov 17, 2011·Heredity·S A RomanenkoA S Graphodatsky
Jun 7, 2011·Annual Review of Genomics and Human Genetics·Malcolm A Ferguson-Smith
Mar 16, 2013·Chromosome Research : an International Journal on the Molecular, Supramolecular and Evolutionary Aspects of Chromosome Biology·Cleusa Yoshiko NagamachiMalcolm Andrew Ferguson-Smith
Aug 4, 2015·Biological Reviews of the Cambridge Philosophical Society·Gauthier DobignyTerence J Robinson
Jun 16, 2012·Cytogenetic and Genome Research·S A Romanenko, V Volobouev
Oct 30, 2016·Genetics and Molecular Biology·Marcelo Guerra
Jul 26, 2013·Genetics and Molecular Biology·Camila Nascimento MoreiraKaren Ventura
Jul 21, 2017·PloS One·Stella Miranda MalcherCleusa Yoshiko Nagamachi
Jan 25, 2018·Comparative Cytogenetics·Camilla Bruno Di-NizoMaria José de J Silva
Oct 12, 2019·BMC Evolutionary Biology·Willam Oliveira da SilvaCleusa Yoshiko Nagamachi
Apr 5, 2020·International Journal of Molecular Sciences·Willam Oliveira da SilvaCleusa Yoshiko Nagamachi

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