What do we know about the heterochromatin of capuchin monkeys (Cebus: Platyrrhini)?
Cytogenetic studies in Cebus spp. have highlighted a peculiar genomic feature: the presence of conspicuous regions of extracentromeric heterochromatin distributed throughout the karyotype. This study investigates the distribution, variability and composition of heterochromatin and their possible imp...
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2018
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| Acceso en línea: | https://bibliotecadigital.exactas.uba.ar/collection/paper/document/paper_00244066_v123_n1_p113_Nieves http://hdl.handle.net/20.500.12110/paper_00244066_v123_n1_p113_Nieves |
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paper:paper_00244066_v123_n1_p113_Nieves2023-06-08T14:52:13Z What do we know about the heterochromatin of capuchin monkeys (Cebus: Platyrrhini)? Cebus GC content Genome dynamics Genome size Heterochromatin ICGH Molecular cytogenetics Neotropical primates Polymorphisms chromosome cytogenetics genome genomics hybridization molecular analysis polymorphism primate Cebus Cebus albifrons Cebus xanthosternos Platyrrhini Primates Cytogenetic studies in Cebus spp. have highlighted a peculiar genomic feature: the presence of conspicuous regions of extracentromeric heterochromatin distributed throughout the karyotype. This study investigates the distribution, variability and composition of heterochromatin and their possible implications for genome dynamics. We performed a molecular cytogenetic analysis in 253 individuals from seven of the 12 currently recognized species. The proportion of heterochromatin was related to genome size and ranked, from smallest to largest, from C. xanthosternos to C. albifrons. Interspecies comparative genome hybridization analyses suggested that the differences among species are not related to heterochromatin content but to changes in the Y chromosome. The pattern revealed by DAPI/CMA3 staining showed that Cebus heterochromatic DNA has a GC-rich composition. The distribution frequencies of heteromorphisms and polymorphisms were not randomly distributed, because a distinguishable pattern could be recognized for each group. Cebus cay and C. nigritus had a higher level of heterochromatin variability than previously reported. In conclusion, the wide variability among species of the genus Cebus is mostly due to the repetitive DNA fraction of its genome. © 2017 The Linnean Society of London, Biological Journal of the Linnean Society. 2018 https://bibliotecadigital.exactas.uba.ar/collection/paper/document/paper_00244066_v123_n1_p113_Nieves http://hdl.handle.net/20.500.12110/paper_00244066_v123_n1_p113_Nieves |
| institution |
Universidad de Buenos Aires |
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I-28 |
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R-134 |
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Biblioteca Digital - Facultad de Ciencias Exactas y Naturales (UBA) |
| topic |
Cebus GC content Genome dynamics Genome size Heterochromatin ICGH Molecular cytogenetics Neotropical primates Polymorphisms chromosome cytogenetics genome genomics hybridization molecular analysis polymorphism primate Cebus Cebus albifrons Cebus xanthosternos Platyrrhini Primates |
| spellingShingle |
Cebus GC content Genome dynamics Genome size Heterochromatin ICGH Molecular cytogenetics Neotropical primates Polymorphisms chromosome cytogenetics genome genomics hybridization molecular analysis polymorphism primate Cebus Cebus albifrons Cebus xanthosternos Platyrrhini Primates What do we know about the heterochromatin of capuchin monkeys (Cebus: Platyrrhini)? |
| topic_facet |
Cebus GC content Genome dynamics Genome size Heterochromatin ICGH Molecular cytogenetics Neotropical primates Polymorphisms chromosome cytogenetics genome genomics hybridization molecular analysis polymorphism primate Cebus Cebus albifrons Cebus xanthosternos Platyrrhini Primates |
| description |
Cytogenetic studies in Cebus spp. have highlighted a peculiar genomic feature: the presence of conspicuous regions of extracentromeric heterochromatin distributed throughout the karyotype. This study investigates the distribution, variability and composition of heterochromatin and their possible implications for genome dynamics. We performed a molecular cytogenetic analysis in 253 individuals from seven of the 12 currently recognized species. The proportion of heterochromatin was related to genome size and ranked, from smallest to largest, from C. xanthosternos to C. albifrons. Interspecies comparative genome hybridization analyses suggested that the differences among species are not related to heterochromatin content but to changes in the Y chromosome. The pattern revealed by DAPI/CMA3 staining showed that Cebus heterochromatic DNA has a GC-rich composition. The distribution frequencies of heteromorphisms and polymorphisms were not randomly distributed, because a distinguishable pattern could be recognized for each group. Cebus cay and C. nigritus had a higher level of heterochromatin variability than previously reported. In conclusion, the wide variability among species of the genus Cebus is mostly due to the repetitive DNA fraction of its genome. © 2017 The Linnean Society of London, Biological Journal of the Linnean Society. |
| title |
What do we know about the heterochromatin of capuchin monkeys (Cebus: Platyrrhini)? |
| title_short |
What do we know about the heterochromatin of capuchin monkeys (Cebus: Platyrrhini)? |
| title_full |
What do we know about the heterochromatin of capuchin monkeys (Cebus: Platyrrhini)? |
| title_fullStr |
What do we know about the heterochromatin of capuchin monkeys (Cebus: Platyrrhini)? |
| title_full_unstemmed |
What do we know about the heterochromatin of capuchin monkeys (Cebus: Platyrrhini)? |
| title_sort |
what do we know about the heterochromatin of capuchin monkeys (cebus: platyrrhini)? |
| publishDate |
2018 |
| url |
https://bibliotecadigital.exactas.uba.ar/collection/paper/document/paper_00244066_v123_n1_p113_Nieves http://hdl.handle.net/20.500.12110/paper_00244066_v123_n1_p113_Nieves |
| _version_ |
1768545360785965056 |