Trends, Stasis, and Drift in the Evolution of Nematode Vulva Development

@article{Kiontke2007TrendsSA,
  title={Trends, Stasis, and Drift in the Evolution of Nematode Vulva Development},
  author={Karin Kiontke and Antoine Barri{\`e}re and Irina Kolotuev and Benjamin Podbilewicz and Ralf J. Sommer and David H. A. Fitch and Marie-Anne F{\'e}lix},
  journal={Current Biology},
  year={2007},
  volume={17},
  pages={1925-1937}
}
BACKGROUND A surprising amount of developmental variation has been observed for otherwise highly conserved features, a phenomenon known as developmental system drift. Either stochastic processes (e.g., drift and absence of selection-independent constraints) or deterministic processes (e.g., selection or constraints) could be the predominate mechanism for the evolution of such variation. We tested whether evolutionary patterns of change were unbiased or biased, as predicted by the stochastic or… Expand
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References

SHOWING 1-10 OF 112 REFERENCES
Evolution of cell lineage and pattern formation in the vulval equivalence group of rhabditid nematodes.
TLDR
This work has analyzed cell lineages and pattern formation in the vulva equivalence group of six rhabditid nematodes of the genera Oscheius, Rhabditella, R Habditoides, Pelodera, and Protorhabditis, and reveals evolutionary modification at several levels. Expand
Developmental system drift and flexibility in evolutionary trajectories
TLDR
Current data on the population genetics and molecular mechanisms of DSD illustrate how the details of developmental processes are constantly changing within evolutionary lineages, indicating that developmental systems may possess a great deal of plasticity in their responses to natural selection. Expand
Apoptosis and change of competence limit the size of the vulva equivalence group in Pristionchus pacificus: a genetic analysis
TLDR
The phenotypes of Pristionchus mutants suggest that alterations in homeotic gene control of anteroposterior patterning is involved in creating this cellular diversity. Expand
Evolution of vulva development in the Cephalobina (Nematoda).
TLDR
The first example of a vulval cell lineage that is asymmetric between the anterior and the posterior sides of the vulva is described, and it is concluded that in this group, death of the Pn.p cells probably constitutes a derived character state compared to a syncytial fate. Expand
Evolutionary changes of developmental mechanisms in the absence of cell lineage alterations during vulva formation in the Diplogastridae (Nematoda).
TLDR
The results suggest that developmental mechanisms, some of which are redundantly involved in vulval fate specification of the genetic model organism Caenorhabditis elegans, can evolve without concomitant morphological change. Expand
Microevolutionary analysis of the nematode genus Pristionchus suggests a recent evolution of redundant developmental mechanisms during vulva formation
TLDR
The molecular and developmental characterization of laboratory strains of the nematode genus Pristionchus are described, which lays a foundation for a microevolutionary analysis of vulva development. Expand
Polymorphism and evolution of vulval precursor cell lineages within two nematode genera, Caenorhabditis and Oscheius
TLDR
Polymorphisms in vulval cell lineage are found within a given nematode species, and could be instrumental in explaining evolutionary variations between closely related species. Expand
Conservation and diversification of Wnt signaling function during the evolution of nematode vulva development
Cell-fate specification and cell-cell signaling have been well studied during vulva development in Caenorhabditis elegans and provide a paradigm in evolutionary developmental biology. PristionchusExpand
Gonadogenesis in Pristionchus pacificus and organ evolution: development, adult morphology and cell-cell interactions in the hermaphrodite gonad.
TLDR
It is reported that the morphology of the P.pacificus gonad is distinct from that of C. elegans, and a set of cell ablations in P. pacificus that indicate extensive cell communication between the somatic gonadal tissues and the germ line. Expand
Developmental Constraints and Evolution: A Perspective from the Mountain Lake Conference on Development and Evolution
TLDR
This review distinguishes between "universal" and "local" constraints; it deals primarily with the latter, which apply to a limited range of taxa and can be broken even within the taxa to which they apply, though with varying degrees of difficulty. Expand
...
1
2
3
4
5
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