Transcriptional and epigenomic changes in response to PEG-triggered osmotic stress in rapeseed (Brassica napus L.)

© The Author(s) 2025. Published by Oxford University Press on behalf of the Society for Experimental Biology.

Détails bibliographiques
Publié dans:Journal of experimental botany. - 1985. - (2025) vom: 03. Apr.
Auteur principal: Prasad, Melvin (Auteur)
Autres auteurs: Shetty, Prateek, Pal, Avik Kumar, Rigó, Gábor, Kant, Kamal, Zsigmond, Laura, Nagy, István, Shivaprasad, P V, Szabados, László
Format: Article en ligne
Langue:English
Publié: 2025
Accès à la collection:Journal of experimental botany
Sujets:Journal Article ChIP DNA methylation Drought responsive genes H3K27me3 H3K4me3 Histone methylation P5CS genes Proline Rapeseed Transcriptome
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520 |a Drought hinders growth, development, and productivity of higher plants. While physiological and molecular background of plant responses to drought has been extensively studied, the role of post-translational modifications of histones or DNA methylation in response to dehydration remains largely elusive. In this study, we deciphered genome-wide changes in transcriptome and histones modifications in response to dehydration in rapeseed (Brassica napus L.). High-throughput transcript profiling (RNA-seq) and chromatin immunoprecipitation followed by sequencing (ChIP-seq) of PEG-treated rapeseed plants revealed genome-scale changes in transcription and histone methylation patterns, specifically in histone H3 lysine 4 trimethylation (H3K4me3) and histone H3 tri-methylated lysine 27 (H3K27me3) sites. We have identified gene sets with altered transcript profiles as well as histone methylation marks in response to osmotic stress. Several proline biosynthesis regulatory genes coding for Delta 1-Pyrroline-5-Carboxylate Synthetases (P5CS) displayed changes in H3K4me3 and/or H3K36me3 enrichment post PEG treatment. Targeted bisulphite sequencing further identified stress-dependent gene body DNA methylation in one of the BnP5CSA gene copies that correlates with its stress-induced activation. By integrating physiological, transcriptional and epigenomic data, our study contributes to a better understanding of the drought response control in crop plants 
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650 4 |a DNA methylation 
650 4 |a Drought responsive genes 
650 4 |a H3K27me3 
650 4 |a H3K4me3 
650 4 |a Histone methylation 
650 4 |a P5CS genes 
650 4 |a Proline 
650 4 |a Rapeseed 
650 4 |a Transcriptome 
700 1 |a Shetty, Prateek  |e verfasserin  |4 aut 
700 1 |a Pal, Avik Kumar  |e verfasserin  |4 aut 
700 1 |a Rigó, Gábor  |e verfasserin  |4 aut 
700 1 |a Kant, Kamal  |e verfasserin  |4 aut 
700 1 |a Zsigmond, Laura  |e verfasserin  |4 aut 
700 1 |a Nagy, István  |e verfasserin  |4 aut 
700 1 |a Shivaprasad, P V  |e verfasserin  |4 aut 
700 1 |a Szabados, László  |e verfasserin  |4 aut 
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