Cited by 233Developmental Biology and Gene RegulationGenomics and Chromatin DynamicsMarine Invertebrate Physiology and Ecology

Spatial mechanisms of gene regulation in metazoan embryos

Davidson, Eric H.·1991·Development

Abstract

The basic characteristics of embryonic process throughout Metazoa are considered with focus on those aspects that provide insight into how cell specification occurs in the initial stages of development. There appear to be three major types of embryogenesis: Type 1, a general form characteristic of most invertebrate taxa of today, in which lineage plays an important role in the spatial organization of the early embryo, and cell specification occurs in situ, by both autonomous and conditional mechanisms; Type 2, the vertebrate form of embryogenesis, which proceeds by mechanisms that are essentially independent of cell lineage, in which diffusible morphogens and extensive early cell migration are particularly important; Type 3, the form exemplified by long germ band insects in which several different regulatory mechanisms are used to generate precise patterns of nuclear gene expression prior to cellularization. Evolutionary implications of the phylogenetic distribution of these types of embryogenesis are considered. Regionally expressed homeodomain regulators are utilized in all three types of embryo, in similar ways in later and postembryonic development, but in different ways in early embryonic development. A specific downstream molecular function for this class of regulator is proposed, based on evidence obtained in vertebrate systems. This provides a route by which to approach the comparative regulatory strategies underlying the three major types of embryogenesis.

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  • Both dipleurula and trochophore larvae use Type 1 embryogenesis, which divides the cleavage-stage embryo into polyclonal territories.

    “Both utilize Type 1 embryogenesis (see Davidson, 1991;Davidson et al., 1995; and the data discussed above), which divides the cleavage-stage embryo into a set of polyclonal territories.”

    From Bilaterian Origins: Significance of New Experimental Observations (2000) · cites this paper as Davidson, 1991

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  1. ANDErsoN, D. T. (1972a). The development of emimetabolous insects. In Developmental Systems: Insects vol.' 1 (eds, S. J. Counce and C. H. Waddington), pp. 95–163. London: Academic Press.
  2. BARNEs, R. D. (1980). Invertebrate Zoology, Fourth Edition. Philadelphia: Saunders College.
  3. BuRNs, R. K. (1955). Urinogenital System. In Analysis of Development (ed. B. H. Willier, P. A. Weiss, and V. Hamburger), pp. 462-491. Philadelphia: W. B. Saunders Company.
  4. CopENHAvER, W. M. (1955). Heart, blood vessels, blood, and entodermal derivatives. In Analysis of Development (ed. B. H. Willier, P. A. Weiss, and V. Hamburger), pp. 440–461. Philadelphia: W. B. Saunders Company.
  5. HoLTFRETER, J. AND HAMBURGER, V. (1955). Amphibians. In Analysis of Development (ed. B. H. Willier, P. A. Weiss, and V. Hamburger), pp. 230-296. Philadelphia: W. B. Saunders Company.

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Authors
Davidson, E. H.
Affiliations
California Institute of Technology (US)
Corresponding author
Davidson, Eric H.
Venue
Development
Published
1991-09-01
Volume
113
Issue
1
Pages
1-26
ISSN
  • 0950-1991 (ISSN-L)
  • 1477-9129
OpenAlex
W2135876222
Cited by
233
References
260
Citations by year
2026: 2 · 2025: 2 · 2024: 2 · 2023: 5 · 2022: 3 · 2021: 1 · 2020: 3 · 2019: 3 · 2018: 1 · 2017: 5 · 2016: 4 · 2015: 1 · 2014: 2 · 2012: 4
FWCI
7.80
Type
journal article
Language
en
Open access
closed
Locations
  • Development (publishedVersion)
  • PubMed (publishedVersion)
  • CaltechAUTHORS (California Institute of Technology) (submittedVersion)
  • HighWire Press Open Archive (submittedVersion)
Funders
Eunice Kennedy Shriver National Institute of Child Health and Human Development (HD05753)
Topics
  • Life Sciences › Biochemistry, Genetics and Molecular Biology › Molecular Biology › Developmental Biology and Gene Regulation
  • Life Sciences › Biochemistry, Genetics and Molecular Biology › Molecular Biology › Genomics and Chromatin Dynamics
  • Physical Sciences › Earth and Planetary Sciences › Paleontology › Marine Invertebrate Physiology and Ecology
Keywords
cell specification, morphogens, cell migration, homeodomain transcription factor, spatial patterning, nuclear gene expression, evolutionary developmental biology, vertebrate embryonic development
MeSH terms
Animals, Cell Differentiation, Embryo, Mammalian, Embryo, Nonmammalian, Biological Evolution, Gene Expression Regulation, Genes, Homeobox, Insecta, Invertebrates, Morphogenesis, Vertebrates

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