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Dark-induced senesc...
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Minerva, TrejoSwedish University of Agricultural Sciences,Sveriges lantbruksuniversitet,Institutionen för växtbiologi,Department of Plant Biology
(author)
Dark-induced senescence causes localized changes in DNA methylation
- Article/chapterEnglish2020
Publisher, publication year, extent ...
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2019-12-02
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Oxford University Press (OUP),2020
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American Society of Plant Biologists,2024
Numbers
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LIBRIS-ID:oai:slubar.slu.se:104685
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https://res.slu.se/id/publ/104685URI
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https://doi.org/10.1104/pp.19.01154DOI
Supplementary language notes
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Language:English
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Summary in:English
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Subject category:ref swepub-contenttype
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Subject category:art swepub-publicationtype
Notes
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Senescence occurs in a programmed manner to dismantle the vegetative tissues and redirect nutrients towards metabolic pathways supporting reproductive success. External factors can trigger the senescence program as an adaptive strategy, indicating that this terminal program is controlled at different levels. It has been proposed that epigenetic factors accompany the reprogramming of the senescent genome; however, the mechanism and extent of this reprogramming remain unknown. Using bisulphite conversion followed by sequencing, we assessed changes in the methylome of senescent Arabidopsis (Arabidopsis thaliana) leaves induced by darkness and monitored their effect on gene and transposable element (TE) expression with transcriptome sequencing. Upon dark-induced senescence, genes controlling chromatin silencing were collectively down-regulated. As a consequence, the silencing of TEs was impaired, causing in particular young TEs to become preferentially reactivated. In parallel, heterochromatin at chromocenters was decondensed. Despite the disruption of the chromatin maintenance network, the global DNA methylation landscape remained highly stable, with localized changes mainly restricted to CHH methylation. Together, our data show that the terminal stage of plant life is accompanied by global changes in chromatin structure but only localized changes in DNA methylation, adding another example of the dynamics of DNA methylation during plant development.
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Mehdi, SaherSwedish University of Agricultural Sciences,Sveriges lantbruksuniversitet,Institutionen för växtbiologi,Department of Plant Biology(Swepub:slu)98838
(author)
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de Jonge, JenniferSwedish University of Agricultural Sciences,Sveriges lantbruksuniversitet,Institutionen för växtbiologi,Department of Plant Biology(Swepub:slu)97937
(author)
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Dvorák Tomastíková, EvaSwedish University of Agricultural Sciences,Sveriges lantbruksuniversitet,Institutionen för växtbiologi,Department of Plant Biology
(author)
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Köhler, ClaudiaSwedish University of Agricultural Sciences,Sveriges lantbruksuniversitet,Institutionen för växtbiologi,Department of Plant Biology(Swepub:slu)50597
(author)
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Hennigs, LarsSwedish University of Agricultural Sciences,Sveriges lantbruksuniversitet,Institutionen för växtbiologi,Department of Plant Biology(Swepub:slu)50109
(author)
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Sveriges lantbruksuniversitetInstitutionen för växtbiologi
(creator_code:org_t)
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Sveriges lantbruksuniversitet
Related titles
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In:Plant Physiology: Oxford University Press (OUP)182, s. 949-9610032-08891532-2548
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