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

ABSTRACT:

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

The As accumulation of Pc-Al fronds, grown in pots of haplic chernozem contaminated with 100 mg As kg^- 1 for 122 days, decreased with age. Content of As was higher in young than old fronds for variants with 100 mg As kg^- 1 (2800 and 2000 mg As kg^- 1 dry matter, respectively). The highest As content was determined in old fronds of Pc-Al grown in p

SUBMITTER: Zemanova V 

PROVIDER: S-EPMC7106808 | biostudies-literature | 2020 Mar

REPOSITORIES: biostudies-literature