Mn Pretreatment Improves the Physiological Resistance and Root Exudation of Celosia argentea Linn. to Cadmium Stress
Abstract
:1. Introduction
2. Materials and Methods
2.1. Seedling Culture
2.2. Hydroponic Experiments
2.2.1. Hydroponic Experiment 1
2.2.2. Hydroponic Experiment 2
2.3. Chemical Analyses
2.4. Statistical Analysis
3. Results and Analysis
3.1. Mn Pretreatment Increased the Biomass of C. argentea
3.2. Mn Pretreatment Stimulated Cd Accumulation of C. argentea
3.3. The Effects of Mn Pretreatment on the Chlorophyll Content of C. argentea under Cd Stress
3.4. Mn Pretreatment Caused a Drop in Antioxidant Enzyme Performance and MDA Content in C. argentea under Cd Stress
3.5. Mn Pretreatment Increased Organic Acids in the Root Exudates of C. argentea under Cd Stress
Organic Acids | Different Treatments | |
---|---|---|
0 μM Mn (Control Group) | 50 μM Mn | |
Oxalic acid | 0.37 ± 0.12 b | 0.49 ± 0.11 a |
Tartaric acid | ND | ND |
Malic acid | 2.58 ± 0.67 b | 3.26 ± 1.02 a |
Lactic acid | 1.25 ± 0.35 ab | 1.74 ± 0.67 a |
Acetic acid | ND | 2.97 ± 0.99 |
Maleic acid | ND | 0.01 ± 0.002 |
Citric acid | 2.17 ± 0.88 b | 3.37 ± 1.32 a |
Fumaric acid | ND | 0.01 ± 0.001 |
4. Discussion
4.1. Mn Pretreatment Improves the Physiological Resistance of C. argentea, Thus Increasing Plant Biomass and Cd Bioaccumulation
4.2. Mn Promotes the Exudation of Organic Acids from Roots, Including the Matric and Citric Acids, Thereby Increasing Cd Bioaccumulation in Plants
5. Conclusions
Author Contributions
Funding
Institutional Review Board Statement
Informed Consent Statement
Data Availability Statement
Conflicts of Interest
References
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You, S.; Deng, Z.; Chen, M.; Zheng, Y.; Liu, J.; Jiang, P. Mn Pretreatment Improves the Physiological Resistance and Root Exudation of Celosia argentea Linn. to Cadmium Stress. Int. J. Environ. Res. Public Health 2023, 20, 1065. https://doi.org/10.3390/ijerph20021065
You S, Deng Z, Chen M, Zheng Y, Liu J, Jiang P. Mn Pretreatment Improves the Physiological Resistance and Root Exudation of Celosia argentea Linn. to Cadmium Stress. International Journal of Environmental Research and Public Health. 2023; 20(2):1065. https://doi.org/10.3390/ijerph20021065
Chicago/Turabian StyleYou, Shaohong, Zhenliang Deng, Mouyixing Chen, Yingyi Zheng, Jiu Liu, and Pingping Jiang. 2023. "Mn Pretreatment Improves the Physiological Resistance and Root Exudation of Celosia argentea Linn. to Cadmium Stress" International Journal of Environmental Research and Public Health 20, no. 2: 1065. https://doi.org/10.3390/ijerph20021065