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Titel: Drought-stress-related reprogramming of gene expression in barley involves differential histone modifications at ABA-related genes
Autor(en): Ost, Charloote
Cao, Hieu Xuan
Nguyễn, Thùy LinhIn der Gemeinsamen Normdatei der DNB nachschlagen
Himmelbach, Axel
Mascher, MartinIn der Gemeinsamen Normdatei der DNB nachschlagen
Stein, NilsIn der Gemeinsamen Normdatei der DNB nachschlagen
Humbeck, KlausIn der Gemeinsamen Normdatei der DNB nachschlagen
Erscheinungsdatum: 2023
Art: Artikel
Sprache: Englisch
Zusammenfassung: Plants respond to drought by the major reprogramming of gene expression, enabling the plant to survive this threatening environmental condition. The phytohormone abscisic acid (ABA) serves as a crucial upstream signal, inducing this multifaceted process. This report investigated the drought response in barley plants (Hordeum vulgare, cv. Morex) at both the epigenome and transcriptome levels. After a ten-day drought period, during which the soil water content was reduced by about 35%, the relative chlorophyll content, as well as the photosystem II efficiency of the barley leaves, decreased by about 10%. Furthermore, drought-related genes such as HvS40 and HvA1 were already induced compared to the well-watered controls. Global ChIP-Seq analysis was performed to identify genes in which histones H3 were modified with euchromatic K4 trimethylation or K9 acetylation during drought. By applying stringent exclusion criteria, 129 genes loaded with H3K4me3 and 2008 genes loaded with H3K9ac in response to drought were identified, indicating that H3K9 acetylation reacts to drought more sensitively than H3K4 trimethylation. A comparison with differentially expressed genes enabled the identification of specific genes loaded with the euchromatic marks and induced in response to drought treatment. The results revealed that a major proportion of these genes are involved in ABA signaling and related pathways. Intriguingly, two members of the protein phosphatase 2C family (PP2Cs), which play a crucial role in the central regulatory machinery of ABA signaling, were also identified through this approach.
URI: https://opendata.uni-halle.de//handle/1981185920/112157
http://dx.doi.org/10.25673/110202
Open-Access: Open-Access-Publikation
Nutzungslizenz: (CC BY 4.0) Creative Commons Namensnennung 4.0 International(CC BY 4.0) Creative Commons Namensnennung 4.0 International
Journal Titel: International journal of molecular sciences
Verlag: Molecular Diversity Preservation International
Verlagsort: Basel
Band: 24
Heft: 15
Originalveröffentlichung: 10.3390/ijms241512065
Seitenanfang: 1
Seitenende: 19
Enthalten in den Sammlungen:Open Access Publikationen der MLU

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