Early Stages of Animal Mesoderm Evolution

Sequencing of genomes of unicellular eukaryotes Holozoa ( Monosiga brevicollis, Capsaspora owczarzaki ), basal multicellular Porifera and Cnidaria, and Bilateria showed that the gene repertoire and gene regulatory networks that play a key role in the evolution of multicellular animals, in particular...

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Bibliographic Details
Published in:Russian journal of developmental biology 2022-04, Vol.53 (2), p.107-114
Main Authors: Ozernyuk, N. D., Isaeva, V. V.
Format: Article
Language:English
Subjects:
Animal Anatomy
Bilateria
Biomedical and Life Sciences
Cambrian
Cnidaria
Developmental Biology
Developmental Biology of Animals (Invertebrates and Vertebrates)
Eukaryotes
Genomes
Histology
HOX gene
Life Sciences
Mesoderm
Morphology
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Summary:Sequencing of genomes of unicellular eukaryotes Holozoa ( Monosiga brevicollis, Capsaspora owczarzaki ), basal multicellular Porifera and Cnidaria, and Bilateria showed that the gene repertoire and gene regulatory networks that play a key role in the evolution of multicellular animals, in particular, in the formation of the mesoderm, have an earlier origin than was expected. The appearance of Cnidaria and Bilateria occurred before the Cambrian explosion when an unprecedented number of new forms of organisms evolved. It is assumed that the molecular genetic basis of the Cambrian explosion was preceded by Hox genes, which provided a fundamental complication of the genetic developmental programs of Bilateria (Erwin and Davidson, 2002; Davidson, 2006; Carroll, 2008; Holland, 2015).
ISSN:1062-3604
1608-3326
DOI:10.1134/S1062360422020096