Epigenetic control of plant senescence and linked processes
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TLDR
The review outlines the concept of epigenetic control of interconnected regulatory pathways steering stress responses and plant development and summarizes recent findings on global alterations in chromatin structure, histone and DNA modifications, and ATP-dependent chromatin remodelling during plant senescence and linked processes.Abstract:
Senescence processes are part of the plant developmental programme. They involve reprogramming of gene expression and are under the control of a complex regulatory network closely linked to other developmental and stressresponsive pathways. Recent evidence indicates that leaf senescence is regulated via epigenetic mechanisms. In the present review, the epigenetic control of plant senescence is discussed in the broader context of environmentsensitive plant development. The review outlines the concept of epigenetic control of interconnected regulatory pathways steering stress responses and plant development. Besides giving an overview of techniques used in the field, it summarizes recent findings on global alterations in chromatin structure, histone and DNA modifications, and ATPdependent chromatin remodelling during plant senescence and linked processes.read more
Citations
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Journal ArticleDOI
Somatic embryogenesis - Stress-induced remodeling of plant cell fate.
TL;DR: The present knowledge on chromatin-based mechanisms potentially involved in the somatic-to-embryogenic developmental transition is summarized, emphasizing the potential role of the chromatin to integrate stress, hormonal, and developmental pathways leading to the activation of the embryogenic program.
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Blocking histone deacetylation in Arabidopsis induces pleiotropic effects on plant gene regulation and development. [Erratum: June 19, 2001, v. 98 (13), p. 7647.]
TL;DR: In this article, AtHD1 expression and deacetylation profiles were associated with various developmental abnormalities, including early senescence, ectopic expression of silenced genes, suppression of apical dominance, homeotic changes, heterochronic shift toward juvenility, flower defects, and male and female sterility.
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Stress-induced structural changes in plant chromatin
TL;DR: This review highlights some of the most recent findings on nuclear reorganization, histone variants, hist one chaperones, DNA- and histone modifications, and somatic and meiotic heritability in connection with stress.
Journal ArticleDOI
Integration of multi-omics techniques and physiological phenotyping within a holistic phenomics approach to study senescence in model and crop plants.
TL;DR: This review addresses the need for the integration of multi-omics techniques and physiological phenotyping into holistic phenomics approaches to dissect the complex phenomenon of senescence and to elucidate the underlying molecular processes.
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Plant organ senescence - regulation by manifold pathways.
TL;DR: A universal nature of senescence is demonstrated, despite this process occurring in organs that have completely different functions, it is very similar; this will provide a powerful tool for plant physiology research.
References
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Journal ArticleDOI
Epigenetic programming via histone methylation at WRKY53 controls leaf senescence in Arabidopsis thaliana.
TL;DR: It is shown that these processes include discrete changes of epigenetic indexing, as well as global alterations in chromatin organization, which suggest that complex epigenetic processes control the senescence-specific gene expression pattern.
Journal ArticleDOI
Epigenetic control of a transcription factor at the cross section of two antagonistic pathways.
TL;DR: It is shown that the Arabidopsis homolog of Trithorax, ATX1, activates the expression of the WRKY70 gene and is involved in establishing the trimethylation pattern of histone H3 tail lysine 4 residues of its nucleosomes.
Journal ArticleDOI
Three Tnt1 Subfamilies Show Different Stress-Associated Patterns of Expression in Tobacco. Consequences for Retrotransposon Control and Evolution in Plants
TL;DR: The analysis of the transcriptional control of a retrotransposon population such as Tnt1 provides new insights into the study of the complex and still poorly understood network of defense- and stress-induced plant signal transduction pathways.
Journal ArticleDOI
HDA19 is required for the repression of salicylic acid biosynthesis and salicylic acid-mediated defense responses in Arabidopsis.
Sun-Mee Choi,Hae-Ryong Song,Soon-Ki Han,Muho Han,Chi-Yeol Kim,Jaejin Park,Yong-Hwan Lee,Jong-Seong Jeon,Yoo-Sun Noh,Bosl Noh +9 more
TL;DR: This study shows that HDA19, by modifying chromatin to a repressive state, ensures low basal expression of defense genes, such as PR1, under unchallenged conditions, as well as their proper induction without overstimulation during defense responses to pathogen attacks.
Journal ArticleDOI
An alternative polyadenylation mechanism coopted to the Arabidopsis RPP7 gene through intronic retrotransposon domestication.
Tokuji Tsuchiya,Thomas Eulgem +1 more
TL;DR: It is shown that COPIA-R7, a TE inserted into the Arabidopsis thaliana disease resistance gene RPP7 recruited the histone mark H3K9me2 to this locus, which functionally link a Histone mark to alternative polyadenylation and the balance between distinct transcript isoforms from a single gene.
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