Effect of arsenic stress on 5-methylcytosine, photosynthetic parameters and nutrient content in arsenic hyperaccumulator Pteris cretica (L.) var. Albo-lineata

0523828 - ÚEB 2021 RIV GB eng J - Journal Article
Zemanová, Veronika - Popov, M. - Pavlíková, D. - Kotrba, P. - Hnilička, F. - Česká, J. - Pavlík, Milan
Effect of arsenic stress on 5-methylcytosine, photosynthetic parameters and nutrient content in arsenic hyperaccumulator Pteris cretica (L.) var. Albo-lineata.
BMC Plant Biology. Roč. 20, č. 1 (2020), č. článku 130. ISSN 1471-2229. E-ISSN 1471-2229
R&D Projects: GA ČR(CZ) GA17-10591S
Institutional support: RVO:61389030
Keywords : DNA demethylation * Epigenetic change * Long-term stress * Pteridaceae * Toxic element
OECD category: Environmental and geological engineering, geotechnics
Impact factor: 4.215, year: 2020
Method of publishing: Open access
http://doi.org/10.1186/s12870-020-2325-6

The As accumulation of Pc-Al fronds, grown in soil contaminated with 100 and 250 mg As kg-1 for 122 days, decreased with age. The highest As content was determined in old fronds of Pc-Al grown in pots with 250 mg As kg-1. The increase with age was confirmed for Cu, Mg, Mn, S and Zn. A significant elevation of all analysed nutrients was showed in old fronds. As accumulation affected DNA methylation status in fronds, but content of 5mC decreased only in old fronds of Pc-Al. Determined photosynthetic processes showed a decrease of fluorescence, photosynthetic rate and chlorophylls of As treatments in young and old fronds. Water potential was decreased by As in both fronds. Thinning of the sclerenchymatous inner cortex and a reduction in average tracheid metaxylem in the vascular cylinder was showed in roots of As treatment. Irrespective to fronds age, physiological parameters positively correlated with a 5mC while negatively with direct As toxicity.
Permanent Link: http://hdl.handle.net/11104/0308110