Chromosome Mapping of U2 snDNA in Species of Leptodactylus (Anura, Leptodactylidae)

Autor(es)

Gazoni, Thiago ^[1] ; Dorigon, Nathalia S. ^[1] ; da Silva, Marcelo J. ^[1] ; Cholak, Luiza R. ^[1] ; Haddad, Celio F. B. ^{[2, 3]} ; Parise-Maltempi, Patricia P. ^[1]

Afiliação do(s) autor(es)

^[1] Univ Estadual Paulista UNESP, Inst Biociencias, Dept Biol Geral & Aplicada, Rio Claro - Brazil

^[2] Univ Estadual Paulista UNESP, Inst Biociencias, Dept Biodiversidade, Rio Claro - Brazil

^[3] Univ Estadual Paulista UNESP, Inst Biociencias, Ctr Aquicultura, Rio Claro - Brazil

• Tipo de documento: Artigo Científico
• Fonte: Cytogenetic and Genome Research; v. 161, n. 1-2, p. 63-69, MAY 2021.
• Citações Web of Science: 0

Resumo

Small nuclear RNA (snRNA) is a class of molecules involved in the processing of pre-mRNA and in regulatory cell processes. snRNAs are always associated with a set of specific proteins. The complexes are referred to as small nuclear ribonucleoproteins, and spliceosome U RNAs are their most common snRNA components. The repetitive sequences of U snDNAs have been cytogenetically mapped in several species of Arthropoda, fishes, and mammals; however, their distribution remains unknown in amphibians. Here, we show results of FISH mapping of U2 snDNA repetitive sequences in species of the amphibian genus Leptodactylus to reveal the distribution patterns of this sequence in their karyotypes. The probe hybridized in the metacentric chromosome pair 6 in Leptodactylus fuscus, L. gracilis, L. latrans, L. chaquensis, L. petersii, L. podicipinus, and L. brevipes. A different pattern was observed in L. labyrinthicus with hybridization signals in 4 chromosome pairs. The same localization of U2 gene sequences in most of the species analyzed suggests a relatively conserved pattern and a similarity of the chromosome 6 among these species of Leptodactylus. (AU)

• Processo FAPESP: 13/50741-7 - Diversidade e conservação dos anfíbios brasileiros
• Beneficiário: Célio Fernando Baptista Haddad
• Modalidade de apoio: Auxílio à Pesquisa - Programa BIOTA - Temático