A transcriptomic hourglass in plant embryogenesis
@article{Quint2012ATH, title={A transcriptomic hourglass in plant embryogenesis}, author={Marcel Quint and Hajk-Georg Drost and Alexander Gabel and Kristian Karsten Ullrich and Markus B{\"o}nn and Ivo Grosse}, journal={Nature}, year={2012}, volume={490}, pages={98-101} }
Animal and plant development starts with a constituting phase called embryogenesis, which evolved independently in both lineages. Comparative anatomy of vertebrate development—based on the Meckel-Serrès law and von Baer’s laws of embryology from the early nineteenth century—shows that embryos from various taxa appear different in early stages, converge to a similar form during mid-embryogenesis, and again diverge in later stages. This morphogenetic series is known as the embryonic ‘hourglass…
181 Citations
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References
SHOWING 1-10 OF 37 REFERENCES
Green beginnings - pattern formation in the early plant embryo.
- Environmental Science, BiologyCurrent topics in developmental biology
- 2010
Comparative transcriptome analysis reveals vertebrate phylotypic period during organogenesis
- BiologyNature communications
- 2011
It is shown that the pharyngula stage is most conserved, whereas earlier and later stages are rather divergent, and this results allow us to predict approximate developmental timetables between different species, and indicate that phARYngula embryos have the most Conserved gene expression profiles, which may be the source of the basic body plan of vertebrates.
Gene expression divergence recapitulates the developmental hourglass model
- BiologyNature
- 2010
It is shown that at each time point more than 80% of genes fit best to models incorporating stabilizing selection, and that for genes whose evolutionarily optimal expression level is the same across all species, selective constraint is maximized during the phylotypic period.
Embryogenesis - the humble beginnings of plant life.
- Environmental Science, BiologyThe Plant journal : for cell and molecular biology
- 2010
This review addresses early embryo development, highlighting general mechanisms and crucial regulators that are involved in patterning the embryo and were mainly analysed in the post-genome decade.
Developmental milestones punctuate gene expression in the Caenorhabditis embryo.
- BiologyDevelopmental cell
- 2012
Early embryogenesis in flowering plants: setting up the basic body pattern.
- Environmental ScienceAnnual review of plant biology
- 2012
The essential patterning processes of apical organization of the embryo depends on both the proper establishment of transcription factor expression domains and, for cotyledon initiation, upward auxin flow in the protoderm.
Arabidopsis embryogenesis.
- Environmental ScienceMethods in molecular biology
- 2008
This chapter focuses on genes that play key roles in the morphogenesis phase of Arabidopsis embryogenesis, which involves the establishment of the embryo's body plan.
Maternal and paternal genomes contribute equally to the transcriptome of early plant embryos
- Biology, Environmental ScienceNature
- 2012
Results of reporter experiments and analyses of transcripts from genes that are not expressed in sperm and egg indicate early and widespread zygotic transcription, indicating that in contrast to early animal embryogenesis, early plant embryogenesis is mostly underZygotic control.
Plants Compared to Animals: The Broadest Comparative Study of Development
- BiologyScience
- 2002
Evidence from studies of developmental mechanisms in both kingdoms, and data from genome-sequencing projects, indicate that development evolved independently in the lineages leading to plants and to animals.
Genome-Wide Analysis Reveals Gene Expression and Metabolic Network Dynamics during Embryo Development in Arabidopsis1[W][OA]
- Environmental Science, BiologyPlant Physiology
- 2011
Methods to isolate whole live Arabidopsis (Arabidopsis thaliana) embryos as young as zygote and perform genome-wide profiling of gene expression have generated comprehensive gene expression data sets for embryo development in Arabidops and may serve as an important foundational resource for other seed plants.