Single integration and spread of a Copia-like sequence nested in rDNA intergenic spacers of Allium cernuum (Alliaceae)

0346413 - BFÚ 2011 RIV CH eng J - Článek v odborném periodiku
Chester, M. - Sýkorová, Eva - Fajkus, Jiří - Leitch, A.R.
Single integration and spread of a Copia-like sequence nested in rDNA intergenic spacers of Allium cernuum (Alliaceae).
Cytogenetic and Genome Research. Roč. 129, 1-3 (2010), s. 35-46. ISSN 1424-8581. E-ISSN 1424-859X
Grant CEP: GA MŠMT(CZ) LC06004; GA AV ČR(CZ) IAA600040505
Výzkumný záměr: CEZ:AV0Z50040507; CEZ:AV0Z50040702
Klíčová slova: Alliaceae * 35S rDNA * retrotransposon
Kód oboru RIV: BO - Biofyzika
Impakt faktor: 1.783, rok: 2010

The 35S ribosomal DNA (rDNA) intergenic spacers (IGS) of Allium cernuum contain a truncated retrotransposon sequence of the Copia superfamily. FISH, Southern hybridisation and sequencing data collectively point to a single origin for units containing the retrotransposon fragment. It is likely that units containing the putative retroelement increased in copy number and dispersed via rDNA homogenisation mechanisms, rather than by multiple retrotransposition events.
Trvalý link: http://hdl.handle.net/11104/0187450