Characterization of the DNA accessibility of chloroplast genomes in grasses.
Journal
Communications biology
ISSN: 2399-3642
Titre abrégé: Commun Biol
Pays: England
ID NLM: 101719179
Informations de publication
Date de publication:
22 Jun 2024
22 Jun 2024
Historique:
received:
06
10
2022
accepted:
23
05
2024
medline:
23
6
2024
pubmed:
23
6
2024
entrez:
22
6
2024
Statut:
epublish
Résumé
Although the chloroplast genome (cpDNA) of higher plants is known to exist as a large protein-DNA complex called 'plastid nucleoid', researches on its DNA state and regulatory elements are limited. In this study, we performed the assay for transposase-accessible chromatin sequencing (ATAC-seq) on five common tissues across five grasses, and found that the accessibility of different regions in cpDNA varied widely, with the transcribed regions being highly accessible and accessibility patterns around gene start and end sites varying depending on the level of gene expression. Further analysis identified a total of 3970 putative protein binding footprints on cpDNAs of five grasses. These footprints were enriched in intergenic regions and co-localized with known functional elements. Footprints and their flanking accessibility varied dynamically among tissues. Cross-species analysis showed that footprints in coding regions tended to overlap non-degenerate sites and contain a high proportion of highly conserved sites, indicating that they are subject to evolutionary constraints. Taken together, our results suggest that the accessibility of cpDNA has biological implications and provide new insights into the transcriptional regulation of chloroplasts.
Identifiants
pubmed: 38909165
doi: 10.1038/s42003-024-06374-4
pii: 10.1038/s42003-024-06374-4
doi:
Substances chimiques
DNA, Chloroplast
0
Types de publication
Journal Article
Langues
eng
Sous-ensembles de citation
IM
Pagination
760Subventions
Organisme : National Natural Science Foundation of China (National Science Foundation of China)
ID : U23A20189
Organisme : National Natural Science Foundation of China (National Science Foundation of China)
ID : 31922065
Organisme : National Natural Science Foundation of China (National Science Foundation of China)
ID : 31771755
Organisme : Natural Science Foundation of Hubei Province (Hubei Provincial Natural Science Foundation)
ID : 2023AFA043
Organisme : Earmarked Fund for China Agriculture Research System
ID : CARS-01-01
Informations de copyright
© 2024. The Author(s).
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