Related Experiment Videos
Cchobo, a hobo-related sequence in Ceratitis capitata.
C Torti1, L M Gomulski, M Bonizzoni
1Department of Animal Biology, University of Pavia, Piazza Botta 9, I-27100 Pavia, Italy.
Genetica
|June 16, 2005
Summary
A novel hobo-related DNA sequence, Cchobo, was identified in the medfly genome, showing high similarity to Drosophila melanogaster elements. Its distribution suggests active copies may be present, potentially indicating horizontal transfer.
Area of Science:
- Molecular Biology
- Genetics
- Evolutionary Biology
Background:
- Transposable elements, like hobo, are mobile genetic sequences found across various organisms.
- Understanding transposable element diversity and activity is crucial for genome evolution studies.
Purpose of the Study:
- To isolate and characterize a hobo-related transposable element from the medfly (Ceratitis capitata).
- To investigate the phylogenetic relationships and genomic distribution of the identified element.
Main Methods:
- Polymerase Chain Reaction (PCR) for amplification of hobo-related sequences.
- DNA sequencing of PCR-derived clones.
- Phylogenetic analysis to determine evolutionary relationships.
- Fluorescence In Situ Hybridization (FISH) for genomic localization.
Main Results:
- A hobo-related sequence, Cchobo, was isolated from the medfly, sharing high DNA identity (99.7%) with Drosophila melanogaster HFL1.
- Phylogenetic analysis placed Cchobo with other hobo-related elements, suggesting potential horizontal transfer.
- FISH analysis revealed Cchobo is distributed in both heterochromatin and euchromatin, with detected polymorphisms.
Conclusions:
- The study identified and characterized a novel hobo-related transposable element, Cchobo, in the medfly genome.
- Evidence suggests Cchobo may be an active element, with potential for horizontal transfer and polymorphic distribution within the genome.