Repetitive sequence distribution on Saguinus, Leontocebus and Leontopithecus tamarins (Platyrrhine, Primates) by mapping telomeric (TTAGGG) motifs and rDNA loci

Francesca Dumas, Michail Rovatsos, Sofia Mazzoleni, Polina L. Perelman

Risultato della ricerca: Articlepeer review

Abstract

Tamarins are a distinct group of small sized New World monkeys with complex phylogenetic re-lationships and poorly studied cytogenetic traits. In this study, we applied molecular cytogenetic analyses by fluorescence in situ hybridization with probes specific for telomeric sequences and ri-bosomal DNA loci after DAPI/CMA3 staining on metaphases from five tamarin species, namely Leontocebus fuscicollis, Leontopithecus rosalia, Saguinus geoffroyi, Saguinus mystax and Saguinus oedi-pus, with the aim to investigate the distribution of repetitive sequences and their possible role in genome evolution. Our analyses revealed that all five examined species show similar karyotypes, 2n = 46, which differ mainly in the morphology of chromosome pairs 16–17 and 19–22, due to the diverse distribution of rDNA loci, the amplification of telomeric-like sequences, the presence of heterochromatic blocks and/or putative chromosomal rearrangements, such as inversions. The differences in cytogenetic traits between species of tamarins are discussed in a comparative phy-logenetic framework, and in addition to data from previous studies, we underline synapo-morphies and apomorphisms that appeared during the diversification of this group of New World monkeys.
Lingua originaleEnglish
pagine (da-a)1-11
Numero di pagine11
RivistaBiology
Volume10
Stato di pubblicazionePublished - 2021

All Science Journal Classification (ASJC) codes

  • ???subjectarea.asjc.1300.1300???
  • ???subjectarea.asjc.2400.2400???
  • ???subjectarea.asjc.1100.1100???

Fingerprint

Entra nei temi di ricerca di 'Repetitive sequence distribution on Saguinus, Leontocebus and Leontopithecus tamarins (Platyrrhine, Primates) by mapping telomeric (TTAGGG) motifs and rDNA loci'. Insieme formano una fingerprint unica.

Cita questo