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Gene expression suggests conserved mechanisms patterning the heads of insects and myriapods
Uppsala University, Disciplinary Domain of Science and Technology, Earth Sciences, Department of Earth Sciences, Palaeobiology.
Uppsala University, Disciplinary Domain of Science and Technology, Earth Sciences, Department of Earth Sciences, Palaeobiology.
Friedrich-Schiller University, Department of Genetics, Jena, Germany.
2011 (English)In: Developmental Biology, ISSN 0012-1606, E-ISSN 1095-564X, Vol. 357, no 1, 64-72 p.Article in journal (Refereed) Published
Abstract [en]

Segmentation, i.e. the subdivision of the body into serially homologous units, is one of the hallmarks of the arthropods. Arthropod segmentation is best understood in the fly Drosophila melanogaster. But different from the situation in most arthropods in this species all segments are formed from the early blastoderm (so called long-germ developmental mode). In most other arthropods only the anterior segments are formed in a similar way (so called short-germ developmental mode). Posterior segments are added one at a time or in pairs of two from a posterior segment addition zone. The segmentation mechanisms are not universally conserved among arthropods and only little is known about the genetic patterning of the anterior segments. Here we present the expression patterns of the insect head patterning gene orthologs hunchback (hb), orthodenticle (otd), buttonhead-like (btdl), collier (col), cap-n-collar (cnc) and crocodile (croc), and the trunk gap gene Kruppel (Kr) in the myriapod Glomeris marginata. Conserved expression of these genes in insects and a myriapod suggests that the anterior segmentation system may be conserved in at least these two classes of arthropods. This finding implies that the anterior patterning mechanism already existed in the last common ancestor of insects and myriapods.

Place, publisher, year, edition, pages
2011. Vol. 357, no 1, 64-72 p.
Keyword [en]
Axis formation, Head development, Bicoid, Arthropoda, Myriapoda
National Category
Natural Sciences
Identifiers
URN: urn:nbn:se:uu:diva-158578DOI: 10.1016/j.ydbio.2011.05.670ISI: 000294144800010OAI: oai:DiVA.org:uu-158578DiVA: diva2:440480
Available from: 2011-09-13 Created: 2011-09-12 Last updated: 2017-12-08Bibliographically approved

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Janssen, RalfBudd, Graham E.

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