Document Detail

The role of repetitive DNA in structure and evolution of sex chromosomes in plants.
MedLine Citation:
PMID:  19277056     Owner:  NLM     Status:  MEDLINE    
Eukaryotic genomes contain a large proportion of repetitive DNA sequences, mostly transposable elements (TEs) and tandem repeats. These repetitive sequences often colonize specific chromosomal (Y or W chromosomes, B chromosomes) or subchromosomal (telomeres, centromeres) niches. Sex chromosomes, especially non-recombining regions of the Y chromosome, are subject to different evolutionary forces compared with autosomes. In non-recombining regions of the Y chromosome repetitive DNA sequences are accumulated, representing a dominant and early process forming the Y chromosome, probably before genes start to degenerate. Here we review the occurrence and role of repetitive DNA in Y chromosome evolution in various species with a focus on dioecious plants. We also discuss the potential link between recombination and transposition in shaping genomes.
E Kejnovsky; R Hobza; T Cermak; Z Kubat; B Vyskot
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Publication Detail:
Type:  Journal Article; Research Support, Non-U.S. Gov't; Review     Date:  2009-03-11
Journal Detail:
Title:  Heredity     Volume:  102     ISSN:  1365-2540     ISO Abbreviation:  Heredity     Publication Date:  2009 Jun 
Date Detail:
Created Date:  2009-05-20     Completed Date:  2009-07-01     Revised Date:  -    
Medline Journal Info:
Nlm Unique ID:  0373007     Medline TA:  Heredity     Country:  England    
Other Details:
Languages:  eng     Pagination:  533-41     Citation Subset:  IM    
Laboratory of Plant Developmental Genetics, Institute of Biophysics ASCR, Brno, Czech Republic.
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MeSH Terms
Chromosomes, Plant / genetics*
Evolution, Molecular*
Plants / genetics*
Repetitive Sequences, Nucleic Acid*
Sex Chromosomes / genetics

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