Controlling apomixis: shared features and distinct characteristics of gene regulation
In higher plants, sexual and asexual reproduction through seeds (apomixis) have evolved as alternative strategies. As apomixis leads to the formation of clonal offspring, its great potential for agricultural applications has long been recognized. However, the genetic basis and the molecular control...
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| Main Author: | |
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| Format: | Article (Journal) |
| Language: | English |
| Published: |
20 March 2020
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| In: |
Genes
Year: 2020, Volume: 11, Issue: 3 |
| ISSN: | 2073-4425 |
| DOI: | 10.3390/genes11030329 |
| Online Access: | Verlag, lizenzpflichtig, Volltext: https://doi.org/10.3390/genes11030329 Verlag, lizenzpflichtig, Volltext: https://www.mdpi.com/2073-4425/11/3/329 
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| Author Notes: | Anja Schmidt |
MARC
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| 520 | |a In higher plants, sexual and asexual reproduction through seeds (apomixis) have evolved as alternative strategies. As apomixis leads to the formation of clonal offspring, its great potential for agricultural applications has long been recognized. However, the genetic basis and the molecular control underlying apomixis and its evolutionary origin are to date not fully understood. Both in sexual and apomictic plants, reproduction is tightly controlled by versatile mechanisms regulating gene expression, translation, and protein abundance and activity. Increasing evidence suggests that interrelated pathways including epigenetic regulation, cell-cycle control, hormonal pathways, and signal transduction processes are relevant for apomixis. Additional molecular mechanisms are being identified that involve the activity of DNA- and RNA-binding proteins, such as RNA helicases which are increasingly recognized as important regulators of reproduction. Together with other factors including non-coding RNAs, their association with ribosomes is likely to be relevant for the formation and specification of the apomictic reproductive lineage. Subsequent seed formation appears to involve an interplay of transcriptional activation and repression of developmental programs by epigenetic regulatory mechanisms. In this review, insights into the genetic basis and molecular control of apomixis are presented, also taking into account potential relations to environmental stress, and considering aspects of evolution. | ||
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| 650 | 4 | |a sexual development | |
| 650 | 4 | |a sporogenesis | |
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