Biochemical Responses to the Long-Term Impact of Copper Sulfate (CuSO₄) in Tobacco Plants.

ABSTRACT: Metabolic changes under stress are often studied in short-term experiments, revealing rapid responses in gene expression, enzyme activity, and the amount of antioxidants. In a long-term experiment, it is possible to identify adaptive changes in both primary and secondary metabolism. In this study, we characterized the physiological state of tobacco plants and assessed the amount and spectrum of phenolic compounds and the lignification of axial organs under excess copper stress in a long-term experiment (40 days). Plants were treated with 100 and 300 μM CuSO₄, as well as a control (Knop solution). Copper accumulation, the size and anatomical structure of organs, stress markers, and the activity of antioxidant enzymes were studied. Lignin content was determined with the cysteine-a

SUBMITTER: Tugbaeva AS 

PROVIDER: S-EPMC10606774 | biostudies-literature | 2023 Oct

REPOSITORIES: biostudies-literature