Effect of arsenic stress on 5-methylcytosine, photosynthetic parameters and nutrient content in arsenic hyperaccumulator Pteris cretica (L.) var. Albo-lineata.
DNA demethylation
Epigenetic change
Long-term stress
Pteridaceae
Toxic element
Journal
BMC plant biology
ISSN: 1471-2229
Titre abrégé: BMC Plant Biol
Pays: England
ID NLM: 100967807
Informations de publication
Date de publication:
30 Mar 2020
30 Mar 2020
Historique:
received:
14
08
2019
accepted:
28
02
2020
entrez:
2
4
2020
pubmed:
2
4
2020
medline:
24
11
2020
Statut:
epublish
Résumé
Arsenic toxicity induces a range of metabolic responses in plants, including DNA methylation. The focus of this paper was on the relationship between As-induced stress and plant senescence in the hyperaccumulator Pteris cretica var. Albo-lineata (Pc-Al). We assume difference in physiological parameters and level of DNA methylation in young and old fronds as symptoms of As toxicity. The As accumulation of Pc-Al fronds, grown in pots of haplic chernozem contaminated with 100 mg As kg The results of this paper point to changes in the metabolism of the hyperaccumulator plant Pc-Al, upon low and high exposure to As contamination. The significant impact of As on DNA methylation was found in old fronds. Irrespective to fronds age, significant correlations were confirmed for 5mC and As toxicity. Our analysis of the very low water potential values and lignification of cell walls in roots showed that transports of assimilated metabolites and water between roots and fronds were reduced. As was showed by our results, epigenetic changes could affect studied parameters of the As hyperaccumulator plant Pc-Al, especially in old fronds.
Sections du résumé
BACKGROUND
BACKGROUND
Arsenic toxicity induces a range of metabolic responses in plants, including DNA methylation. The focus of this paper was on the relationship between As-induced stress and plant senescence in the hyperaccumulator Pteris cretica var. Albo-lineata (Pc-Al). We assume difference in physiological parameters and level of DNA methylation in young and old fronds as symptoms of As toxicity.
RESULTS
RESULTS
The As accumulation of Pc-Al fronds, grown in pots of haplic chernozem contaminated with 100 mg As kg
CONCLUSIONS
CONCLUSIONS
The results of this paper point to changes in the metabolism of the hyperaccumulator plant Pc-Al, upon low and high exposure to As contamination. The significant impact of As on DNA methylation was found in old fronds. Irrespective to fronds age, significant correlations were confirmed for 5mC and As toxicity. Our analysis of the very low water potential values and lignification of cell walls in roots showed that transports of assimilated metabolites and water between roots and fronds were reduced. As was showed by our results, epigenetic changes could affect studied parameters of the As hyperaccumulator plant Pc-Al, especially in old fronds.
Identifiants
pubmed: 32228515
doi: 10.1186/s12870-020-2325-6
pii: 10.1186/s12870-020-2325-6
pmc: PMC7106808
doi:
Substances chimiques
Soil Pollutants
0
Chlorophyll
1406-65-1
5-Methylcytosine
6R795CQT4H
Arsenic
N712M78A8G
Types de publication
Journal Article
Langues
eng
Sous-ensembles de citation
IM
Pagination
130Subventions
Organisme : Grantová Agentura České Republiky
ID : 17-10591S
Organisme : Ministerstvo Školství, Mládeže a Tělovýchovy
ID : CZ.02.1.01/0.0/0.0/16_019/0000845
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