Document Detail

Long repeats in a huge genome: microsatellite loci in the grasshopper Chorthippus biguttulus.
MedLine Citation:
PMID:  16474983     Owner:  NLM     Status:  MEDLINE    
It is commonly believed that both the average length and the frequency of microsatellites correlate with genome size. We have estimated the frequency and the average length for 69 perfect dinucleotide microsatellites in an insect with an exceptionally large genome: Chorthippus biguttulus (Orthoptera, Acrididae). Dinucleotide microsatellites are not more frequent in C. biguttulus, but repeat arrays are 1.4 to 2 times longer than in other insect species. The average repeat number in C. biguttulus lies in the range of higher vertebrates. Natural populations are highly variable. At least 30 alleles per locus were found and the expected heterozygosity is above 0.95 at all three loci studied. In contrast, the observed heterozygosity is much lower (< or = 0.51), which could be caused by long null alleles.
Jana Ustinova; Roland Achmann; Sylvia Cremer; Frieder Mayer
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Publication Detail:
Type:  Journal Article; Research Support, Non-U.S. Gov't     Date:  2006-02-10
Journal Detail:
Title:  Journal of molecular evolution     Volume:  62     ISSN:  0022-2844     ISO Abbreviation:  J. Mol. Evol.     Publication Date:  2006 Feb 
Date Detail:
Created Date:  2006-03-07     Completed Date:  2006-08-31     Revised Date:  2006-11-15    
Medline Journal Info:
Nlm Unique ID:  0360051     Medline TA:  J Mol Evol     Country:  Germany    
Other Details:
Languages:  eng     Pagination:  158-67     Citation Subset:  IM    
Institute of Zoology II, University of Erlangen, Staudtstrasse 5, Erlangen, D-91058, Germany.
Data Bank Information
Bank Name/Acc. No.:
GENBANK/AY532396;  AY532397;  AY532398;  AY532399;  AY532400
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MeSH Terms
Dinucleotide Repeats
Evolution, Molecular*
Gene Frequency
Genome, Insect*
Grasshoppers / genetics*
Microsatellite Repeats*
Molecular Sequence Data

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