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Charlat, S; Riegler, M; Baures, I; Poinsot, D; Stauffer, C; Merçot, H.
(2004): Incipient evolution of Wolbachia compatibility types.
Evolution. 2004; 58(9):1901-1908 FullText FullText_BOKU

Cytoplasmic incompatibility (CI) is induced in arthropods by the maternally inherited bacterium Wolbachia. When infected males mate with uninfected females or with females bearing a different Wolbachia variant, paternal chromosomes behave abnormally and embryos die. This pattern can be interpreted as resulting from two bacterial effects: One (usually termed mod, for modification) would affect sperm and induce embryo death, unless Wolbachia is also present in the egg, which implies the existence of a second effect, usually termed resc, for rescue. The fact that Cl can occur in crosses between males and females infected by different Wolbachia shows that mod and resc interact in a specific manner. In other words, different compatibility types, or mod/resc pairs seem to have diverged from one (or a few) common ancestor(s). We are interested in the process allowing the evolution of mod/resc pairs. Here this question is addressed experimentally after cytoplasmic injection into a single host species (Drosophila simulans) by investigating compatibility relationships between closely related Wolbachia variants naturally evolving in different dipteran hosts: D. simulans, Drosophila melanogaster, and Rhagoletis cerasi. Our results suggest that closely related bacteria can be totally or partially incompatible. The compatibility relationships observed can be explained using a formal description of the mod and resc functions, implying both qualitative and quantitative variations.
Authors BOKU Wien:
Stauffer Christian
Find related publications in this database (using NML MeSH Indexing)
Animals -
Crosses, Genetic -
Cytoplasm - microbiology
Drosophila - microbiology
Evolution - microbiology
Host-Parasite Interactions - microbiology
Models, Biological - microbiology
Reproduction - genetics
Species Specificity - genetics
Statistics, Nonparametric - genetics
Tephritidae - microbiology
Wolbachia - genetics

Find related publications in this database (Keywords)
compatibility types
cytoplasmic incompatibility
mod resc model

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