Expression of collier in the premandibular segment of myriapods: support for the traditional Atelocerata concept or a case of convergence?

ABSTRACT:

Background

A recent study on expression and function of the ortholog of the Drosophila collier (col) gene in various arthropods including insects, crustaceans and chelicerates suggested a de novo function of col in the development of the appendage-less intercalary segment of insects. However, this assumption was made on the background of the now widely-accepted Pancrustacea hypothesis that hexapods represent an in-group of the crustaceans. It was therefore assumed that the expression of col in myriapods would reflect the ancestral state like in crustaceans and chelicerates, i.e. absence from the premandibular/intercalary segment and hence no function in its formation.

Results

We find that col in myriapods is expressed at early developmental stages in the same anterior domain

SUBMITTER: Janssen R 

PROVIDER: S-EPMC3053236 | biostudies-literature | 2011 Feb

REPOSITORIES: biostudies-literature