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[The P-Element Has Not Significant Effect on the Drosophila simulans Viability]
L P Zakharenko1,2, D V Petrovskii1, R A Bykov1
1Institute of Cytology and Genetics, Siberian Branch, Russian Academy of Sciences, Novosibirsk, 630090 Russia.
Molekuliarnaia Biologiia
|March 31, 2023
Summary
Horizontal transfer of the P-element occurred in Drosophila simulans, spreading across Asian populations. The P-element invasion did not significantly impact the flies' physiological traits, suggesting rapid adaptation or minimal P-element activity.
Area of Science:
- Genomics
- Evolutionary Biology
- Molecular Biology
Context:
- Horizontal transfer of transposable elements (TEs) is documented in the Drosophilidae family.
- A recent P-element invasion from Drosophila melanogaster into Drosophila simulans has been observed.
- The P-element has disseminated widely in D. melanogaster and is present in 30% of D. simulans populations globally.
Purpose:
- To investigate the presence and prevalence of the P-element in Asian D. simulans populations.
- To assess the physiological impact of the P-element on D. simulans lines.
- To understand the significance of this novel mobile element invasion in the D. simulans genome.
Summary:
- The P-element was detected in D. simulans lines collected in Asian populations after 2012, with copy numbers comparable to African populations.
- Intraspecific hybrid dysgenesis was observed in some line pairs, but overall physiological characteristics (lifespan, fecundity, locomotor activity) were not adversely affected.
- The study examined cytotype, lifespan, fecundity, and locomotor activity in D. simulans lines with and without the P-element.
Impact:
- Findings suggest either rapid adaptation of D. simulans to the new transposable element or that the P-element's movement rate is too low to cause noticeable negative effects.
- This research provides insights into the ongoing evolutionary dynamics of transposable elements within insect populations.
- The study contributes to understanding host-parasite interactions at the genomic level, specifically concerning mobile genetic elements.
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