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Evolutionary dynamics of rDNA clusters on chromosomes of moths and butterflies (Lepidoptera)

SYSNO ASEP	0338064
Document Type	J - Journal Article
R&D Document Type	Journal Article
Subsidiary J	Článek ve WOS
Title	Evolutionary dynamics of rDNA clusters on chromosomes of moths and butterflies (Lepidoptera)
Author(s)	Nguyen, Petr (BC-A)_{RID, ORCID} Sahara, K. (JP) Yoshido, A. (JP) Marec, František (BC-A)_{RID, ORCID}
Number of authors	4
Source Title	Genetica - ISSN 0016-6707 Roč. 138, č. 3 (2010), s. 343-354
Number of pages	12 s.
Language	eng - English
Country	NL - Netherlands
Keywords	ribosomal DNA ; nucleolar organizer region ; chromosome fusion
Subject RIV	EB - Genetics ; Molecular Biology
R&D Projects	GA206/06/1860 GA ČR - Czech Science Foundation (CSF)
	IAA600960925 GA AV ČR - Academy of Sciences of the Czech Republic (AV ČR)
CEZ	AV0Z50070508 - ENTU-I, BC-A (2005-2011)
UT WOS	000274087700007
DOI	10.1007/s10709-009-9424-5
Annotation	We examined chromosomal distribution of major ribosomal DNAs (rDNAs), clustered in the nucleolar organizer regions (NORs), in 18 species of moths and butterflies using fluorescence in situ hybridization with a codling moth (Cydia pomonella) 18S rDNA probe. Most species showed one or two rDNA clusters in their haploid karyotype but exceptions with 4–11 clusters also occurred. Our results in a compilation with previous data revealed dynamic evolution of rDNA distribution in Lepidoptera except Noctuoidea, which showed a highly uniform rDNA pattern. Based on rDNA dynamics in Lepidoptera and considering the role of ordered nuclear architecture in karyotype evolution, we propose ectopic recombination, i.e., homologous recombination between repetitive sequences of non-homologous chromosomes, as a primary motive force in rDNA repatterning.
Workplace	Biology Centre (since 2006)
Contact	Dana Hypšová, eje@eje.cz, Tel.: 387 775 214
Year of Publishing	2010

Number of the records: 1