Document Detail

Polymorphic chromosomal specificity of centromere satellite families in Arabidopsis halleri ssp. gemmifera.
MedLine Citation:
PMID:  16636927     Owner:  NLM     Status:  MEDLINE    
The chromosomal localizations of repetitive DNA clusters (ribosomal DNA and centromere satellites) were analyzed by fluorescent in situ hybridization in five strains of Arabidopsis halleri ssp. gemmifera. All five A. gemmifera strains have three chromosome pairs with 45S (5.8S-16S-26S) rDNA loci, and one pair with both 5S and 45S rDNA loci. These localizations are different from that of A. thaliana. Very unusually, there are three families of centromeric satellite DNAs (pAa, pAge1, and pAge2), and they showed polymorphism among the five strains studied. Overall, we found four different centromere satellite compositions. A plant from Fumuro was heterozygous for the chromosome specificities of centromere satellite families, possibly due to a reciprocal translocation involving centromere regions. Changes of centromeric satellite repeats appear to be rapid and frequent events in the history of A. gemmifera, and seem to occur by exchanging clusters as units.
Akira Kawabe; Shuhei Nasuda
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Publication Detail:
Type:  Journal Article; Research Support, Non-U.S. Gov't    
Journal Detail:
Title:  Genetica     Volume:  126     ISSN:  0016-6707     ISO Abbreviation:  Genetica     Publication Date:  2006 Mar 
Date Detail:
Created Date:  2006-04-25     Completed Date:  2006-08-28     Revised Date:  2008-11-21    
Medline Journal Info:
Nlm Unique ID:  0370740     Medline TA:  Genetica     Country:  Netherlands    
Other Details:
Languages:  eng     Pagination:  335-42     Citation Subset:  IM    
Laboratory of Plant Genetics, Graduate School of Agriculture, Kyoto University, Kitashirakawa Oiwake-cho, 606-8502, Sakyo-ku, Kyoto, Japan.
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MeSH Terms
Arabidopsis / genetics*
Centromere / genetics*
Chromosomes, Plant*
DNA, Ribosomal / genetics
Genetic Variation
Polymorphism, Genetic
Repetitive Sequences, Nucleic Acid
Species Specificity
Reg. No./Substance:
0/DNA, Ribosomal

From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine

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