PMID- 26140159
OWN - NLM
STAT- PubMed-not-MEDLINE
DCOM- 20150703
LR  - 20240323
IS  - 1993-0771 (Print)
IS  - 1993-078X (Electronic)
IS  - 1993-0771 (Linking)
VI  - 9
IP  - 2
DP  - 2015
TI  - Ribosomal DNA clusters and telomeric (TTAGG)n repeats in blue butterflies 
      (Lepidoptera, Lycaenidae) with low and high chromosome numbers.
PG  - 161-71
LID - 10.3897/CompCytogen.v9i2.4715 [doi]
AB  - Ribosomal DNA clusters and telomeric repeats are important parts of eukaryotic 
      genome. However, little is known about their organization and localization in 
      karyotypes of organisms with holocentric chromosomes. Here we present first 
      cytogenetic study of these molecular structures in seven blue butterflies of the 
      genus Polyommatus Latreille, 1804 with low and high chromosome numbers (from n=10 
      to n=ca.108) using fluorescence in situ hybridization (FISH) with 18S rDNA and 
      (TTAGG) n telomeric probes. FISH with the 18S rDNA probe showed the presence of 
      two different variants of the location of major rDNA clusters in Polyommatus 
      species: with one or two rDNA-carrying chromosomes in haploid karyotype. We 
      discuss evolutionary trends and possible mechanisms of changes in the number of 
      ribosomal clusters. We also demonstrate that Polyommatus species have the 
      classical insect (TTAGG) n telomere organization. This chromosome end protection 
      mechanism probably originated de novo in small chromosomes that evolved via 
      fragmentations.
FAU - Vershinina, Alisa O
AU  - Vershinina AO
AD  - Zoological Institute, Russian Academy of Sciences, Universitetskaya emb. 1, St. 
      Petersburg 199034, Russia.
FAU - Anokhin, Boris A
AU  - Anokhin BA
AD  - Zoological Institute, Russian Academy of Sciences, Universitetskaya emb. 1, St. 
      Petersburg 199034, Russia.
FAU - Lukhtanov, Vladimir A
AU  - Lukhtanov VA
AD  - Zoological Institute, Russian Academy of Sciences, Universitetskaya emb. 1, St. 
      Petersburg 199034, Russia ; Department of Entomology, St. Petersburg State 
      University, Universitetskaya emb. 7/9, St. Petersburg 199034, Russia.
LA  - eng
PT  - Journal Article
DEP - 20150511
PL  - Bulgaria
TA  - Comp Cytogenet
JT  - Comparative cytogenetics
JID - 101503807
PMC - PMC4488964
OTO - NOTNLM
OT  - Lycanidae
OT  - chromosome
OT  - karyotype evolution
OT  - ribosomal DNA
OT  - taxonomy
OT  - telomeres
EDAT- 2015/07/04 06:00
MHDA- 2015/07/04 06:01
PMCR- 2015/05/11
CRDT- 2015/07/04 06:00
PHST- 2015/02/12 00:00 [received]
PHST- 2015/03/20 00:00 [accepted]
PHST- 2015/07/04 06:00 [entrez]
PHST- 2015/07/04 06:00 [pubmed]
PHST- 2015/07/04 06:01 [medline]
PHST- 2015/05/11 00:00 [pmc-release]
AID - 10.3897/CompCytogen.v9i2.4715 [doi]
PST - epublish
SO  - Comp Cytogenet. 2015 May 11;9(2):161-71. doi: 10.3897/CompCytogen.v9i2.4715. 
      eCollection 2015.