Related Experiment Videos
Host-like sequences in the schistosome genome
K A Clough1, A C Drew, P J Brindley
1Molecular Parasitology Unit, The Queensland Institute of Medical Research, Post Office, Royal Brisbane Hospital, Herston, Queensland, 4029 Australia.
Parasitology Today (Personal Ed.)
|July 1, 1996
Summary
Recent studies suggested genomic rearrangements in schistosomes, but this research offers a new interpretation. The authors conclude that host DNA contamination likely explains previous findings of developmental genomic changes.
Area of Science:
- Parasitology
- Genetics
- Molecular Biology
Background:
- Recent studies proposed widespread genomic rearrangements in schistosomes during their life cycle.
- Such plasticity is unusual in eukaryotes due to potential evolutionary costs.
Purpose of the Study:
- To re-evaluate the evidence for widespread genomic rearrangements in schistosomes.
- To propose an alternative explanation for previously observed genetic alterations.
Main Methods:
- Analysis of Southern hybridization data.
- Investigation of potential sources of experimental artifacts.
Main Results:
- Data ostensibly supported genomic rearrangements but suggested an alternative interpretation.
- Artefactual contamination with host DNA was identified as a likely explanation.
Conclusions:
- The hypothesis of widespread developmental genomic rearrangements in schistosomes is likely incorrect.
- Host DNA contamination provides a more plausible explanation for the observed experimental results.