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Reactive oxygen species (ROS) and nucleic acid modifications during seed dormancy

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CarrilloBarral_ Nestor_2020_Reactive_oxygen_species_nucleic_acid_modifications_during_seed_dormancy.pdf (1.250Mb)
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http://hdl.handle.net/2183/25724
Atribución 3.0 España
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  • Investigación (FCIE) [1259]
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Título
Reactive oxygen species (ROS) and nucleic acid modifications during seed dormancy
Autor(es)
Katsuya-Gaviria, Kai
Caro, Elena
Carrillo Barral, Néstor
Iglesias-Fernández, Raquel
Data
2020-05-27
Cita bibliográfica
Katsuya-Gaviria, K.; Caro, E.; Carrillo-Barral, N.; Iglesias-Fernández, R. Reactive Oxygen Species (ROS) and Nucleic Acid Modifications During Seed Dormancy. Plants 2020, 9, 679.
Resumo
[Abstract] The seed is the propagule of higher plants and allows its dissemination and the survival of the species. Seed dormancy prevents premature germination under favourable conditions. Dormant seeds are only able to germinate in a narrow range of conditions. During after-ripening (AR), a mechanism of dormancy release, seeds gradually lose dormancy through a period of dry storage. This review is mainly focused on how chemical modifications of mRNA and genomic DNA, such as oxidation and methylation, affect gene expression during late stages of seed development, especially during dormancy. The oxidation of specific nucleotides produced by reactive oxygen species (ROS) alters the stability of the seed stored mRNAs, being finally degraded or translated into non-functional proteins. DNA methylation is a well-known epigenetic mechanism of controlling gene expression. In Arabidopsis thaliana, while there is a global increase in CHH-context methylation through embryogenesis, global DNA methylation levels remain stable during seed dormancy, decreasing when germination occurs. The biological significance of nucleic acid oxidation and methylation upon seed development is discussed.
Palabras chave
After-ripening
DNA methylation
Oxidation
RNA stability
Seed dormancy
Seed vigour
ROS
 
Versión do editor
https://doi.org/10.3390/plants9060679
Dereitos
Atribución 3.0 España
ISSN
2223-7747

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