Document Detail


Abundance and chromosomal distribution of six Drosophila buzzatii transposons: BuT1, BuT2, BuT3, BuT4, BuT5, and BuT6.
MedLine Citation:
PMID:  16773395     Owner:  NLM     Status:  MEDLINE    
Abstract/OtherAbstract:
The abundance and chromosomal distribution of six class-II transposable elements (TEs) of Drosophila buzzatii have been analyzed by Southern blotting and in situ hybridization. These six transposons had been previously found at the breakpoints of inversions 2j and 2q ( 7 ) of D. buzzatii. These two polymorphic inversions were generated by an ectopic recombination event between two copies of Galileo, a Foldback element. The four breakpoints became hotspots for TE insertions after the generation of the inversion and the transposons analyzed in this work are considered to be secondary invaders of these regions. Insertions of the six transposons are present in the euchromatin but show an increased density in the pericentromeric euchromatin-heterochromatin transition region and the dot chromosome. They are also more abundant in the inverted segments of chromosome 2 rearrangements. We further observed that the accumulation of TE insertions varies between elements and is correlated between dot, proximal regions, and inverted segments. These observations fully agree with previous data in Drosophila melanogaster and support recombination rate as the chief force explaining the chromosomal distribution of TEs.
Authors:
Ferran Casals; Josefa González; Alfredo Ruiz
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Publication Detail:
Type:  Comparative Study; Journal Article; Research Support, Non-U.S. Gov't     Date:  2006-06-14
Journal Detail:
Title:  Chromosoma     Volume:  115     ISSN:  0009-5915     ISO Abbreviation:  Chromosoma     Publication Date:  2006 Oct 
Date Detail:
Created Date:  2006-08-30     Completed Date:  2007-02-20     Revised Date:  -    
Medline Journal Info:
Nlm Unique ID:  2985138R     Medline TA:  Chromosoma     Country:  Germany    
Other Details:
Languages:  eng     Pagination:  403-12     Citation Subset:  IM    
Affiliation:
Departament de Genètica i de Microbiologia, Universitat Autònoma de Barcelona, 08193 Bellaterra, Barcelona, Spain.
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MeSH Terms
Descriptor/Qualifier:
Animals
Base Sequence
Chromosome Breakage
Chromosome Mapping
DNA Probes / genetics
DNA Transposable Elements / genetics*
Drosophila / genetics*
Drosophila melanogaster / genetics
Genome, Insect
In Situ Hybridization
Recombination, Genetic
Species Specificity
Chemical
Reg. No./Substance:
0/DNA Probes; 0/DNA Transposable Elements

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


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