Lack of evidence for conserved parasegmental grooves in arthropods.
Arthropod development
Engrailed
Neo-functionalization
Parasegment
Segment-polarity
Segmentation
Journal
Development genes and evolution
ISSN: 1432-041X
Titre abrégé: Dev Genes Evol
Pays: Germany
ID NLM: 9613264
Informations de publication
Date de publication:
02 2022
02 2022
Historique:
received:
09
07
2021
accepted:
03
01
2022
pubmed:
18
1
2022
medline:
6
5
2022
entrez:
17
1
2022
Statut:
ppublish
Résumé
In the arthropod model species Drosophila melanogaster, a dipteran fly, segmentation of the anterior-posterior body axis is under control of a hierarchic gene cascade. Segmental boundaries that form morphological grooves are established posteriorly within the segmental expression domain of the segment-polarity gene (SPG) engrailed (en). More important for the development of the fly, however, are the parasegmental boundaries that are established at the interface of en expressing cells and anteriorly adjacent wingless (wg) expressing cells. In Drosophila, both segmental and transient parasegmental grooves form. The latter are positioned anterior to the expression of en. Although the function of the SPGs in establishing and maintaining segmental and parasegmental boundaries is highly conserved among arthropods, parasegmental grooves have only been reported for Drosophila, and a spider (Cupiennius salei). Here, we present new data on en expression, and re-evaluate published data, from four distantly related spiders, including Cupiennius, and a distantly related chelicerate, the harvestman Phalangium opilio. Gene expression analysis of en genes in these animals does not corroborate the presence of parasegmental grooves. Consequently, our data question the general presence of parasegmental grooves in arthropods.
Identifiants
pubmed: 35038005
doi: 10.1007/s00427-022-00684-5
pii: 10.1007/s00427-022-00684-5
pmc: PMC8918137
doi:
Substances chimiques
Drosophila Proteins
0
Homeodomain Proteins
0
Types de publication
Journal Article
Research Support, Non-U.S. Gov't
Langues
eng
Sous-ensembles de citation
IM
Pagination
27-37Informations de copyright
© 2022. The Author(s).
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