(Why) Does Evolution Favour Embryogenesis?. (July 2016)
- Record Type:
- Journal Article
- Title:
- (Why) Does Evolution Favour Embryogenesis?. (July 2016)
- Main Title:
- (Why) Does Evolution Favour Embryogenesis?
- Authors:
- Rensing, Stefan A.
- Abstract:
- Abstract : Complex multicellular organisms typically possess life cycles in which zygotes (formed by gamete fusion) and meiosis occur. Canonical animal embryogenesis describes development from zygote to birth. It involves polarisation of the egg/zygote, asymmetric cell divisions, establishment of axes, symmetry breaking, formation of organs, and parental nutrition (at least in early stages). Similar developmental patterns have independently evolved in other eukaryotic lineages, including land plants and brown algae. The question arises whether embryo-like structures and associated developmental processes recurrently emerge because they are local optima of the evolutionary landscape. To understand which evolutionary principles govern complex multicellularity, we need to analyse why and how similar processes evolve convergently – von Baer's and Haeckel's phylotypic stage revisited in other phyla. Trends: Complex multicellularity evolved several times independently in eukaryotes. After 150 years we have some molecular evidence for the hourglass pattern described by Haeckel. Developmental processes akin to animal embryogenesis are also known in land plants and some other lineages. Although it involves homologous genes, embryogenesis might not be homologous and it is unclear how and why it evolves.
- Is Part Of:
- Trends in plant science. Volume 21:Number 7(2016)
- Journal:
- Trends in plant science
- Issue:
- Volume 21:Number 7(2016)
- Issue Display:
- Volume 21, Issue 7 (2016)
- Year:
- 2016
- Volume:
- 21
- Issue:
- 7
- Issue Sort Value:
- 2016-0021-0007-0000
- Page Start:
- 562
- Page End:
- 573
- Publication Date:
- 2016-07
- Subjects:
- Botany -- Periodicals
Botanique -- Périodiques
Botany
Periodicals
580.5 - Journal URLs:
- http://www.sciencedirect.com/science/journal/13601385 ↗
http://www.elsevier.com/journals ↗ - DOI:
- 10.1016/j.tplants.2016.02.004 ↗
- Languages:
- English
- ISSNs:
- 1360-1385
- Deposit Type:
- Legaldeposit
- View Content:
- Available online (eLD content is only available in our Reading Rooms) ↗
- Physical Locations:
- British Library DSC - 9049.675450
British Library DSC - BLDSS-3PM
British Library HMNTS - ELD Digital store - Ingest File:
- 8821.xml