期刊
CARYOLOGIA
卷 74, 期 4, 页码 111-119出版社
FIRENZE UNIV PRESS
DOI: 10.36253/caryologia-1296
关键词
transposable elements; C-banding; molecular cytogenetics probes; genome evolution
资金
- FFR 2020 grant from the University of Palermo
In this study, LINE-1 sequences were found to be enriched around centromeres and co-localized with heterochromatin C-positive bands in the chromosomes of two platyrrhine species. This distribution suggests a potential role of LINE-1 sequences in centromere architecture and karyotype organization in these primates.
LINE-1 sequences have been linked to genome evolution, plasticity and speciation; however, despite their importance, their chromosomal distribution is poorly known in primates. In this perspective, we used fluorescence in situ hybridiza-tion (FISH) to map LINE-1 probes onto two representative platyrrhine species, Aotus nancymaae (Cebidae) and Alouatta belzebul (Atelidae), both characterized with high -ly rearranged karyotypes, in order to investigate their chromosomal distribution and role and to better characterize the two genomes. We found centromeric enrichment of LINE-1 sequences on all biarmed and acrocentric chromosomes co-localized with heterochromatin C-positive bands. This distribution led us to hypothesize that LINE 1 sequences may have a role in the centromere architecture and karyotype organization of platyrrhine genomes.
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