Sex-Dependent Gene Expression and Evolution of the Drosophila Transcriptome
632
Citation
33
Reference
10
Related Paper
Citation Trend
Abstract:
Comparison of the gene-expression profiles between adults of Drosophila melanogaster and Drosophila simulans has uncovered the evolution of genes that exhibit sex-dependent regulation. Approximately half the genes showed differences in expression between the species, and among these, ∼83% involved a gain, loss, increase, decrease, or reversal of sex-biased expression. Most of the interspecific differences in messenger RNA abundance affect male-biased genes. Genes that differ in expression between the species showed functional clustering only if they were sex-biased. Our results suggest that sex-dependent selection may drive changes in expression of many of the most rapidly evolving genes in the Drosophila transcriptome.Keywords:
RNA-Seq
Abstract Cuticle pigmentation was shown to be associated with body temperature for several relatively large species of insects, but it was questioned for small insects. Here we used a thermal camera to assess the association between drosophilid cuticle pigmentation and body temperature increase when individuals are exposed to light. We compared mutants of large effects within species ( Drosophila melanogaster ebony and yellow mutants). Then we analyzed the impact of naturally occurring pigmentation variation within species complexes ( Drosophila americana/Drosophila novamexicana and Drosophila yakuba/Drosophila santomea ). Finally we analyzed lines of D. melanogaster with moderate differences in pigmentation. We found significant differences in temperatures for each of the four pairs we analyzed. The temperature differences appeared to be proportional to the differently pigmented area: between Drosophila melanogaster ebony and yellow mutants or between Drosophila americana and Drosophila novamexicana, for which the whole body is differently pigmented, the temperature difference was around 0.6 °C ± 0.2 °C. By contrast, between D. yakuba and D. santomea or between Drosophila melanogaster Dark and Pale lines, for which only the posterior abdomen is differentially pigmented, we detected a temperature difference of about 0.14 °C ± 0.10 °C. This strongly suggests that cuticle pigmentation has ecological implications in drosophilids regarding adaptation to environmental temperature.
Cuticle (hair)
Melanogaster
Cite
Citations (4)
Supplementary Table 3 from Characterizing the Impact of Smoking and Lung Cancer on the Airway Transcriptome Using RNA-Seq
RNA-Seq
Table (database)
Cite
Citations (0)
Cite
Citations (2)
Isolation
Melanogaster
Cite
Citations (0)
Mutation frequency
Cite
Citations (13)
Abstract Cuticle pigmentation has been clearly demonstrated to impact body temperature for several relatively large species of insects, but it was questioned for small insects. Here we used a thermal camera to assess the impact of drosophilid cuticle pigmentation on body temperature when individuals are exposed to light. We compared mutants of large effects within species ( Drosophila melanogaster ebony and yellow mutants). Then we analyzed the impact of naturally occurring pigmentation variation within species complexes ( Drosophila americana/Drosophila novamexicana and Drosophila yakuba/Drosophila santomea ). Finally we analyzed lines of D. melanogaster with moderate differences in pigmentation. We found significant differences in temperatures for each of the four pairs we analyzed. The temperature differences appeared to be proportional to the differently pigmented area: between Drosophila melanogaster ebony and yellow mutants or between Drosophila americana and Drosophila novamexicana , for which the whole body is differently pigmented, the difference in temperatures was around 0.6°C ±0.2°C. By contrast, between D. yakuba and D. santomea or between Drosophila melanogaster Dark and Pale lines, for which only the posterior abdomen is differentially pigmented, we detected a temperature difference of about 0.14°C ±0.10°C. This demonstrates that cuticle pigmentation has ecological implications in drosophilids regarding adaptation to environmental temperature.
Cuticle (hair)
Melanogaster
Drosophila Suzukii
Cite
Citations (1)
Cite
Citations (24)
Supplementary Table 4 from Characterizing the Impact of Smoking and Lung Cancer on the Airway Transcriptome Using RNA-Seq
RNA-Seq
Table (database)
Cite
Citations (0)
Supplementary Table 1 from Characterizing the Impact of Smoking and Lung Cancer on the Airway Transcriptome Using RNA-Seq
RNA-Seq
Table (database)
Cite
Citations (0)
Supplementary Table 10 from Characterizing the Impact of Smoking and Lung Cancer on the Airway Transcriptome Using RNA-Seq
RNA-Seq
Table (database)
Cite
Citations (0)