An analysis of segmentation dynamics throughout embryogenesis in the centipede Strigamia maritima.

ABSTRACT:

Background

Most segmented animals add segments sequentially as the animal grows. In vertebrates, segment patterning depends on oscillations of gene expression coordinated as travelling waves in the posterior, unsegmented mesoderm. Recently, waves of segmentation gene expression have been clearly documented in insects. However, it remains unclear whether cyclic gene activity is widespread across arthropods, and possibly ancestral among segmented animals. Previous studies have suggested that a segmentation oscillator may exist in Strigamia, an arthropod only distantly related to insects, but further evidence is needed to document this.

Results

Using the genes even skipped and Delta as representative of genes involved in segment patterning in insects and in vertebrates, respect

SUBMITTER: Brena C 

PROVIDER: S-EPMC3879059 | biostudies-literature | 2013 Nov

REPOSITORIES: biostudies-literature