Sulfate supplementation affects nutrient and photosynthetic status of Arabidopsis thaliana and Nicotiana tabacum differently under prolonged exposure to cadmium

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Authors

LYČKA Martin BARTÁK Miloš HELIA Ondřej KOPRIVA Stanislav MORAVCOVÁ Dana HÁJEK Josef FOJT Lukáš ČMELÍK Richard FAJKUS Jiří FOJTOVÁ Miloslava

Year of publication 2023
Type Article in Periodical
Magazine / Source Journal of Hazardous Materials
MU Faculty or unit

Central European Institute of Technology

Citation
Web https://doi.org/10.1016/j.jhazmat.2022.130527
Doi http://dx.doi.org/10.1016/j.jhazmat.2022.130527
Keywords Cadmium; Sulfate; Heavy metal stress; Arabidopsis thaliana; Nicotiana tabacum
Description Hydroponic experiments were performed to examine the effect of prolonged sulfate limitation combined with cadmium (Cd) exposure in Arabidopsis thaliana and a potential Cd hyperaccumulator, Nicotiana tabacum. Low sulfate treatments (20 and 40 mu M MgSO4) and Cd stress (4 mu M CdCl2) showed adverse effects on morphology, photosynthetic and biochemical parameters and the nutritional status of both species. For example, Cd stress decreased NO3 - root content under 20 mu M MgSO4 to approximately 50% compared with respective controls. Interestingly, changes in many measured parameters, such as chlorophyll and carotenoid contents, the concentrations of anions, nutrients and Cd, induced by low sulfate supply, Cd exposure or a combination of both factors, were species-specific. Our data showed opposing effects of Cd exposure on Ca, Fe, Mn, Cu and Zn levels in roots of the studied plants. In A. thaliana, levels of glutathione, phytochelatins and glucosinolates demonstrated their distinct involvement in response to sub-optimal growth conditions and Cd stress. In shoot, the levels of phytochelatins and glucosinolates in the organic sulfur fraction were not dependent on sulfate supply under Cd stress. Altogether, our data showed both common and species-specific features of the complex plant response to prolonged sulfate deprivation and/or Cd exposure.
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