Cited by 31Marine Invertebrate Physiology and EcologyDevelopmental Biology and Gene RegulationMarine Sponges and Natural Products

Comparative analyses of developmental transcription factor repertoires in sponges reveal unexpected complexity of the earliest animals

Fortunato, Sofia A.V., Adamski, Marcin, Adamska, Maja·2015·Marine Genomics

Abstract

Developmental transcription factors (DTFs) control development of animals by affecting expression of target genes, some of which are transcription factors themselves. In bilaterians and cnidarians, conserved DTFs are involved in homologous processes such as gastrulation or specification of neurons. The genome of Amphimedon queenslandica, the first sponge to be sequenced, revealed that only a fraction of these conserved DTF families are present in demosponges. This finding was in line with the view that morphological complexity in the animal lineage correlates with developmental toolkit complexity. However, as the phylum Porifera is very diverse, Amphimedon's genome may not be representative of all sponges. The recently sequenced genomes of calcareous sponges Sycon ciliatum and Leucosolenia complicata allowed investigations of DTFs in a sponge lineage evolutionarily distant from demosponges. Surprisingly, the phylogenetic analyses of identified DTFs revealed striking differences between the calcareous sponges and Amphimedon. As these differences appear to be a result of independent gene loss events in the two sponge lineages, the last common ancestor of sponges had to possess a much more diverse repertoire of DTFs than extant sponges. Developmental expression of sponge homologs of genes involved in specification of the Bilaterian endomesoderm and the neurosensory cells suggests that roles of many DTFs date back to the last common ancestor of all animals. Strikingly, even DTFs displaying apparent pan-metazoan conservation of sequence and function are not immune to being lost from individual species genomes. The quest for a comprehensive picture of the developmental toolkit in the last common metazoan ancestor is thus greatly benefitting from the increasing accessibility of sequencing, allowing comparisons of multiple genomes within each phylum.

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Crossref · 10.1016/j.margen.2015.07.008

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  • Genomic and transcriptomic databases are becoming available for several sponge species and for the placozoan Trichoplax adhaerens.

    “an extensive set of genomic and transcriptomic databases is becoming available for several sponge species -Amphimedon queenslandica, Oscarella carmela and Sycon ciliatum, as well as for a placozoan Trichoplax adhaerens [22–25]”

    From Back to the Basics: Cnidarians Start to Fire (2017) · cites this paper as [24]

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Authors
Fortunato, S. A. V., Adamski, M., & Adamska, M.
Affiliations
University of Bergen (NO)
Corresponding author
Adamska, Maja
Venue
Marine Genomics
Publisher
Elsevier BV
Published
2015-12
Volume
24
Pages
121-129
ISSN
1874-7787 (ISSN-L)
OpenAlex
W1115029164
Cited by
31
References
25
Citations by year
2026: 1 · 2024: 2 · 2023: 1 · 2021: 2 · 2020: 2 · 2019: 4 · 2018: 4 · 2017: 4 · 2016: 8 · 2015: 3
FWCI
0.80
Type
journal article
Language
en
Open access
closed
Locations
  • Marine Genomics (publishedVersion)
  • PubMed (publishedVersion)
  • ResearchOnline - JCU (James Cook University) (submittedVersion)
  • ANU Open Research (Australian National University) (submittedVersion)
Funders
Sars International Centre for Marine Molecular Biology, Bergen, Norway
Topics
  • Physical Sciences › Earth and Planetary Sciences › Paleontology › Marine Invertebrate Physiology and Ecology
  • Life Sciences › Biochemistry, Genetics and Molecular Biology › Molecular Biology › Developmental Biology and Gene Regulation
  • Life Sciences › Biochemistry, Genetics and Molecular Biology › Biotechnology › Marine Sponges and Natural Products
Keywords
developmental transcription factors, sponges, Amphimedon queenslandica, Sycon ciliatum, Leucosolenia complicata, calcareous sponges, demosponges, gene loss, endomesoderm specification, sponge evolution, gene family evolution
MeSH terms
Animals, Biological Evolution, Porifera, Transcription Factors, Gene Expression Regulation, Developmental

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