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(Reference retrieved automatically from Web of Science through information on FAPESP grant and its corresponding number as mentioned in the publication by the authors.)

Comparative mapping of a new repetitive DNA sequence and chromosome region-specific probes unveiling rearrangements in an Amazonian frog complex

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Gatto, Kaleb Pretto [1] ; Souza, Lucas H. B. [1] ; Nascimento, Juliana [1] ; Suarez, Pablo [2] ; Lourenco, Luciana Bolsoni [1]
Total Authors: 5
[1] Univ Estadual Campinas, Inst Biol, Dept Biol Estrutural & Func, Lab Estudos Cromossom LabEsC, Campinas, SP - Brazil
[2] Inst Biol Subtrop CONICET UNaM, Puerto Iguazu, Misiones - Argentina
Total Affiliations: 2
Document type: Journal article
Source: GENOME; v. 64, n. 9, p. 857-868, SEP 2021.
Web of Science Citations: 0

The frog species Physalaemus ephippifer exists in the Amazonian region and harbors heteromorphic Z and W chromosomes. A genetic lineage closely related to this species was recognized based on its mitochondria) DNA and RADseq-style markers, but its taxonomic status is still undear and has been referred to as Lineage 1 of ``P. cuvieri{''}. The heteromorphic sex chromosomes found in P. ephippifer are not present in this lineage and which of its chromosome pairs is homologous to the sex chromosomes of P. ephippifer remain to be elucidated as well as the role of such a karyotypic divergence in the evolution of these frogs. Here, we described a new family of repetitive DNA and used its chromosomal sites along with the markers detected by a probe constructed from the microdissected segment of the Z chromosome of P. ephippifer to infer chromosomal homology. We also analyzed an unnamed species that is considered to be the sister group of the lade composed of Lineage 1 of ``P. cuvieri{''} and P. ephippifer. Our results suggest that complex rearrangements involving the chromosomes that were inferred to be homeologous to the sex chromosomes of P. ephippifer have occurred during the divergence of this group of frogs. (AU)

FAPESP's process: 17/15842-8 - Cytogenetic and phylogenetic analysis of the complex Physalaemus cuvieri - P. ephippifer (Anura, Leptodactylidae)
Grantee:Luciana Bolsoni Lourenço
Support Opportunities: Regular Research Grants
FAPESP's process: 11/09239-0 - Phylogenetic analysis and study of sex and B chromosomes of Physalaemus (Anura, Leiuperidae): a contribution to the analysis of the karyological evolution in the genus
Grantee:Luciana Bolsoni Lourenço
Support Opportunities: Regular Research Grants