Cellular basis of morphological variation and temperature-related plasticity in Drosophila melanogaster strains with divergent wing shapes.
| Title: | Cellular basis of morphological variation and temperature-related plasticity in Drosophila melanogaster strains with divergent wing shapes. |
|---|---|
| Authors: | Torquato LS; Laboratório de Evolução de Caracteres Complexos, Departamento de Genética, Instituto de Biologia, Centro de Ciências da Saúde, Universidade Federal do Rio de Janeiro, Rio de Janeiro, 21941-902, Brazil.; Mattos D; Matta BP; Bitner-Mathé BC |
| Source: | Genetica [Genetica] 2014 Dec; Vol. 142 (6), pp. 495-505. Date of Electronic Publication: 2014 Oct 19. |
| Publication Type: | Journal Article; Research Support, Non-U.S. Gov't |
| Language: | English |
| Journal Info: | Publisher: Kluwer Academic Country of Publication: Netherlands NLM ID: 0370740 Publication Model: Print-Electronic Cited Medium: Internet ISSN: 1573-6857 (Electronic) Linking ISSN: 00166707 NLM ISO Abbreviation: Genetica Subsets: MEDLINE |
| Imprint Name(s): | Publication: Dordrecht : Kluwer Academic; Original Publication: s'-Gravenhage. |
| MeSH Terms: | Temperature*; Drosophila melanogaster/*anatomy & histology ; Wings, Animal/*anatomy & histology; Drosophila melanogaster/genetics ; Wings, Animal/cytology ; Animals ; Female ; Phenotype |
| Abstract: | Organ shape evolves through cross-generational changes in developmental patterns at cellular and/or tissue levels that ultimately alter tissue dimensions and final adult proportions. Here, we investigated the cellular basis of an artificially selected divergence in the outline shape of Drosophila melanogaster wings, by comparing flies with elongated or rounded wing shapes but with remarkably similar wing sizes. We also tested whether cellular plasticity in response to developmental temperature was altered by such selection. Results show that variation in cellular traits is associated with wing shape differences, and that cell number may play an important role in wing shape response to selection. Regarding the effects of developmental temperature, a size-related plastic response was observed, in that flies reared at 16 °C developed larger wings with larger and more numerous cells across all intervein regions relative to flies reared at 25 °C. Nevertheless, no conclusive indication of altered phenotypic plasticity was found between selection strains for any wing or cellular trait. We also described how cell area is distributed across different intervein regions. It follows that cell area tends to decrease along the anterior wing compartment and increase along the posterior one. Remarkably, such pattern was observed not only in the selected strains but also in the natural baseline population, suggesting that it might be canalized during development and was not altered by the intense program of artificial selection for divergent wing shapes. |
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| Entry Date(s): | Date Created: 20141020 Date Completed: 20150625 Latest Revision: 20211021 |
| Update Code: | 20260130 |
| DOI: | 10.1007/s10709-014-9795-0 |
| PMID: | 25326715 |
| Database: | MEDLINE |
Journal Article; Research Support, Non-U.S. Gov't