Colocalization of (TTAGGG)n telomeric sequences and ribosomal genes in Atlantic eels
- PMID: 7704417
- DOI: 10.1007/BF00711162
Colocalization of (TTAGGG)n telomeric sequences and ribosomal genes in Atlantic eels
Abstract
The distribution of (TTAGGG)n telomeric repeats was studied in chromosomes of two Atlantic eels, Anguilla anguilla and A. rostrata. We found that these sequences hybridize to all the telomeres but also to the entire nucleolar organizer region (NOR) localized in both species at the short arm of chromosome 8. This was considered to be due to the interspersion of telomeric sequences within the NOR ones. Whatever the significance of this interspersion may be, it seems to be limited to A. anguilla and A. rostrata since in Muraena helena (family muraenidae), which also belongs to the Anguilliformes, no telomeric hybridization signals were found along the NOR regions.
Similar articles
-
Identification of two new repetitive elements and chromosomal mapping of repetitive DNA sequences in the fish Gymnothorax unicolor (Anguilliformes: Muraenidae).Eur J Histochem. 2011 May 27;55(2):e12. doi: 10.4081/ejh.2011.e12. Eur J Histochem. 2011. PMID: 22193293 Free PMC article.
-
Comparative cytogenetics of six Indo-Pacific moray eels (Anguilliformes: Muraenidae) by chromosomal banding and fluorescence in situ hybridization.J Fish Biol. 2015 Sep;87(3):634-45. doi: 10.1111/jfb.12737. Epub 2015 Aug 4. J Fish Biol. 2015. PMID: 26242690
-
Telomeric (TTAGGG)n sequences are associated with nucleolus organizer regions (NORs) in the wood lemming.Chromosome Res. 1999;7(3):235-40. doi: 10.1023/a:1009255517764. Chromosome Res. 1999. PMID: 10421383
-
Telomeres in fishes.Cytogenet Genome Res. 2013;141(2-3):114-25. doi: 10.1159/000354278. Epub 2013 Aug 24. Cytogenet Genome Res. 2013. PMID: 23988378 Review.
-
Chromosomal aberrations involving telomeres and interstitial telomeric sequences.Mutagenesis. 2012 Jan;27(1):1-15. doi: 10.1093/mutage/ger052. Epub 2011 Aug 19. Mutagenesis. 2012. PMID: 21857006 Review.
Cited by
-
Sex Chromosomes and Internal Telomeric Sequences in Dormitator latifrons (Richardson 1844) (Eleotridae: Eleotrinae): An Insight into their Origin in the Genus.Genes (Basel). 2020 Jun 17;11(6):659. doi: 10.3390/genes11060659. Genes (Basel). 2020. PMID: 32560434 Free PMC article.
-
Identification of two new repetitive elements and chromosomal mapping of repetitive DNA sequences in the fish Gymnothorax unicolor (Anguilliformes: Muraenidae).Eur J Histochem. 2011 May 27;55(2):e12. doi: 10.4081/ejh.2011.e12. Eur J Histochem. 2011. PMID: 22193293 Free PMC article.
-
The chromosome number, karyotype and genome size of the desert plant diploid Reaumuria soongorica (Pall.) Maxim.Plant Cell Rep. 2011 Jun;30(6):955-64. doi: 10.1007/s00299-011-1020-3. Epub 2011 Feb 15. Plant Cell Rep. 2011. PMID: 21327391
-
Mapping the distribution of the telomeric sequence (T2AG3)n in the 2n = 14 ancestral marsupial complement and in the macropodines (Marsupialia: Macropodidae) by fluorescence in situ hybridization.Chromosome Res. 2004;12(4):405-14. doi: 10.1023/B:CHRO.0000034133.77878.88. Chromosome Res. 2004. PMID: 15241019
-
Telomere organization and the interstitial telomeric sites involvement in insects and vertebrates chromosome evolution.Genet Mol Biol. 2022 Nov 14;45(3 Suppl 1):e20220071. doi: 10.1590/1678-4685-GMB-2022-0071. eCollection 2022. Genet Mol Biol. 2022. PMID: 36394537 Free PMC article.