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Restricted expression of a median Hox gene in the central nervous system of chaetognaths

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Abstract

Hox genes encode a set of evolutionarily conserved transcription factors that regulate anterior–posterior patterning. Here we report the first developmental expression of a Hox gene from Chaetognatha. These metazoans have been shown recently to be part of the protostome group of bilaterians. We describe the analysis of the SceMed4 gene (a Spadella cephaloptera Median Hox gene) including its expression from late stages of egg development to 7 days after hatching. In all of these stages, SceMed4 is expressed in two lateral stripes in a restricted region of the developing ventral ganglion.

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Acknowledgements

We wish to thank Kerridge S. and anonymous reviewers for helpful corrections.

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Authors and Affiliations

  1. Centre d’Océanologie de Marseille, UMR 6540 CNRS DIMAR, Rue batterie des lions, 13007, Marseille, France

    Daniel Papillon & Yannick Le Parco

  2. Université Aix-Marseille I, 3, place Victor Hugo, 13001, Marseille, France

    Yvan Perez & Xavier Caubit

  3. Institut de Biologie du Développement de Marseille, Laboratoire de Génétique et Physiologie du Développement, Parc Scientifique de Luminy, 13288, Marseille cedex 09, France

    Laurent Fasano & Xavier Caubit

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  1. Daniel Papillon
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  2. Yvan Perez
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  3. Laurent Fasano
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  4. Yannick Le Parco
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  5. Xavier Caubit
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Correspondence to Daniel Papillon.

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Communicated by V. Hartenstein

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Papillon, D., Perez, Y., Fasano, L. et al. Restricted expression of a median Hox gene in the central nervous system of chaetognaths. Dev Genes Evol 215, 369–373 (2005). https://doi.org/10.1007/s00427-005-0483-z

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  • DOI: https://doi.org/10.1007/s00427-005-0483-z

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