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Parental contributions to the transcriptome of early plant embryos


Baroux, Célia; Autran, Daphné; Raissig, Michael T; Grimanelli, Daniel; Grossniklaus, Ueli (2013). Parental contributions to the transcriptome of early plant embryos. Current Opinion in Genetics & Development, 23(1):72-74.

Abstract

In plants and animals, embryo development becomes ultimately controlled by zygotic genes, but the timing of zygotic genome activation (ZGA) varies greatly between organisms. We recently showed that the transcriptome of young Arabidopsis embryos is dominated by maternal transcripts with a progressive ZGA under the maternal control of epigenetic pathways. In contrast, another study reported that both parental genomes contribute equally to the transcriptome of young embryos, suggesting that ZGA occurs immediately after fertilization. How to explain such dramatic differences? We propose that the discrepancies between these two studies likely reflect genuine biological differences between the two experiments, paving the road towards exciting discoveries on ZGA mechanisms in plants.

Abstract

In plants and animals, embryo development becomes ultimately controlled by zygotic genes, but the timing of zygotic genome activation (ZGA) varies greatly between organisms. We recently showed that the transcriptome of young Arabidopsis embryos is dominated by maternal transcripts with a progressive ZGA under the maternal control of epigenetic pathways. In contrast, another study reported that both parental genomes contribute equally to the transcriptome of young embryos, suggesting that ZGA occurs immediately after fertilization. How to explain such dramatic differences? We propose that the discrepancies between these two studies likely reflect genuine biological differences between the two experiments, paving the road towards exciting discoveries on ZGA mechanisms in plants.

Citations

6 citations in Web of Science®
7 citations in Scopus®
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Additional indexing

Item Type:Journal Article, refereed, further contribution
Communities & Collections:07 Faculty of Science > Department of Plant and Microbial Biology
07 Faculty of Science > Zurich-Basel Plant Science Center
Dewey Decimal Classification:580 Plants (Botany)
Language:English
Date:2013
Deposited On:04 Feb 2014 15:39
Last Modified:05 Apr 2016 17:28
Publisher:Elsevier
ISSN:0959-437X
Free access at:Publisher DOI. An embargo period may apply.
Publisher DOI:https://doi.org/10.1016/j.gde.2013.01.006
PubMed ID:23453901

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