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Review

Epigenetic Landmarks of Leaf Senescence and Crop Improvement

1
Department of Plant Physiology, Faculty of Biology, Adam Mickiewicz University, ul. Uniwersytetu Poznańskiego 6, 61-614 Poznań, Poland
2
Institute of Biochemistry and Biophysics, Polish Academy of Sciences, ul. Pawińskiego 5A, 02-106 Warsaw, Poland
*
Author to whom correspondence should be addressed.
Int. J. Mol. Sci. 2020, 21(14), 5125; https://doi.org/10.3390/ijms21145125
Received: 19 June 2020 / Revised: 14 July 2020 / Accepted: 15 July 2020 / Published: 20 July 2020
This review synthesizes knowledge on epigenetic regulation of leaf senescence and discusses the possibility of using this knowledge to improve crop quality. This control level is implemented by different but interacting epigenetic mechanisms, including DNA methylation, covalent histone modifications, and non-covalent chromatin remodeling. The genetic and epigenetic changes may act alone or together and regulate the gene expression, which may result in heritable (stress memory) changes and may lead to crop survival. In the review, the question also arises whether the mitotically stable epigenetic information can be used for crop improvement. The barley crop model for early and late events of dark-induced leaf senescence (DILS), where the point of no return was defined, revealed differences in DNA and RNA modifications active in DILS compared to developmental leaf senescence. This suggests the possibility of a yet-to-be-discovered epigenetic-based switch between cell survival and cell death. Conclusions from the analyzed research contributed to the hypothesis that chromatin-remodeling mechanisms play a role in the control of induced leaf senescence. Understanding this mechanism in crops might provide a tool for further exploitation toward sustainable agriculture: so-called epibreeding. View Full-Text
Keywords: leaf senescence; epigenetic regulation; histone modifications; DNA methylation; chromatin remodeling; stress response; crop improvement leaf senescence; epigenetic regulation; histone modifications; DNA methylation; chromatin remodeling; stress response; crop improvement
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MDPI and ACS Style

Ostrowska-Mazurek, A.; Kasprzak, P.; Kubala, S.; Zaborowska, M.; Sobieszczuk-Nowicka, E. Epigenetic Landmarks of Leaf Senescence and Crop Improvement. Int. J. Mol. Sci. 2020, 21, 5125. https://doi.org/10.3390/ijms21145125

AMA Style

Ostrowska-Mazurek A, Kasprzak P, Kubala S, Zaborowska M, Sobieszczuk-Nowicka E. Epigenetic Landmarks of Leaf Senescence and Crop Improvement. International Journal of Molecular Sciences. 2020; 21(14):5125. https://doi.org/10.3390/ijms21145125

Chicago/Turabian Style

Ostrowska-Mazurek, Agnieszka, Piotr Kasprzak, Szymon Kubala, Magdalena Zaborowska, and Ewa Sobieszczuk-Nowicka. 2020. "Epigenetic Landmarks of Leaf Senescence and Crop Improvement" International Journal of Molecular Sciences 21, no. 14: 5125. https://doi.org/10.3390/ijms21145125

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