Stochastic Variation in DNA Methylation Modulates Nucleosome Occupancy and Alternative Splicing in Arabidopsis thaliana
Journal article
Jabre, Ibtissam, Chaudhary, S., Wilson, C., Staiger, D. and Syed, N. 2022. Stochastic Variation in DNA Methylation Modulates Nucleosome Occupancy and Alternative Splicing in Arabidopsis thaliana. Plants. 11 (9), p. 1105. https://doi.org/10.3390/plants11091105
Authors | Jabre, Ibtissam, Chaudhary, S., Wilson, C., Staiger, D. and Syed, N. |
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Abstract | Plants use complex gene regulatory mechanisms to overcome diverse environmental challenges. For instance, cold stress induces rapid and massive transcriptome changes via alternative splicing (AS) to confer cold tolerance in plants. In mammals, mounting evidence suggests chromatin structure can regulate co-transcriptional AS. Recent evidence also supports co-transcriptional regulation of AS in plants, but how dynamic changes in DNA methylation and the chromatin structure influence the AS process upon cold stress remains poorly understood. In this study, we used the DNA methylation inhibitor 5-Aza-2′-Deoxycytidine (5-aza-dC) to investigate the role of stochastic variations in DNA methylation and nucleosome occupancy in modulating cold-induced AS, in Arabidopsis thaliana (Arabidopsis). Our results demonstrate that 5-aza-dC derived stochastic hypomethylation modulates nucleosome occupancy and AS profiles of genes implicated in RNA metabolism, plant hormone signal transduction, and of cold-related genes in response to cold stress. We also demonstrate that cold-induced remodelling of DNA methylation regulates genes involved in amino acid metabolism. Collectively, we demonstrate that sudden changes in DNA methylation via drug treatment can influence nucleosome occupancy levels and modulate AS in a temperature-dependent manner to regulate plant metabolism and physiological stress adaptation. |
Keywords | Arabidopsis thaliana; Alternative splicing; Cold stress; Co-transcriptional Alternative Splicing; Stochastic Dna Methylation |
Year | 2022 |
Journal | Plants |
Journal citation | 11 (9), p. 1105 |
Publisher | MDPI AG |
ISSN | 2223-7747 |
Digital Object Identifier (DOI) | https://doi.org/10.3390/plants11091105 |
Official URL | https://www.mdpi.com/2223-7747/11/9/1105 |
Publication dates | |
01 Apr 2022 | |
Online | 19 Apr 2022 |
Publication process dates | |
Deposited | 20 Apr 2022 |
Accepted | 07 Apr 2022 |
Publisher's version | |
Output status | Published |
Additional information | Publications router: Date 2022-04-19 of type 'publication_date' with format 'electronic' included in notification |
Publications router: License for VOR version of this article starting on 2022-04-19: https://creativecommons.org/licenses/by/4.0/ included in notification | |
License | https://creativecommons.org/licenses/by/4.0/ |
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