High intrachromosomal similarity of retrotransposon long terminal repeats: evidence for homogenization by gene conversion on plant sex chromosomes?
Jazyk angličtina Země Nizozemsko Médium print-electronic
Typ dokumentu časopisecké články, práce podpořená grantem
PubMed
17134852
DOI
10.1016/j.gene.2006.10.007
PII: S0378-1119(06)00633-0
Knihovny.cz E-zdroje
- MeSH
- chromozomy rostlin genetika MeSH
- DNA primery genetika MeSH
- DNA rostlinná genetika MeSH
- fylogeneze MeSH
- genová konverze MeSH
- hybridizace in situ fluorescenční MeSH
- koncové repetice * MeSH
- modely genetické MeSH
- molekulární evoluce MeSH
- retroelementy * MeSH
- sekvence nukleotidů MeSH
- Silene genetika MeSH
- Publikační typ
- časopisecké články MeSH
- práce podpořená grantem MeSH
- Názvy látek
- DNA primery MeSH
- DNA rostlinná MeSH
- retroelementy * MeSH
Retrotransposons are ubiquitous in the plant genomes and are responsible for their plasticity. Recently, we described a novel family of gypsy-like retrotransposons, named Retand, in the dioecious plant Silene latifolia possessing evolutionary young sex chromosomes of the mammalian type (XY). Here we have analyzed long terminal repeats (LTRs) of Retand that were amplified from laser microdissected X and Y sex chromosomes and autosomes of S. latifolia. A majority of X and Y-derived LTRs formed a few separate clades in phylogenetic analysis reflecting their high intrachromosomal similarity. Moreover, the LTRs localized on the Y chromosome were less divergent than the X chromosome-derived or autosomal LTRs. These data can be explained by a homogenization process, such as gene conversion, working more intensively on the Y chromosome.
Citace poskytuje Crossref.org
Horizontal transfer - imperative mission of acellular life forms, Acytota
Impact of repetitive DNA on sex chromosome evolution in plants
