Journal of Soil and Plant Interactions
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1- Bu-Ali Sina University
2- Bu-Ali Sina University ,a_sepehri@basu.ac.ir
2- Bu-Ali Sina University ,
Abstract: (7 Views)
Background and Objective: Drought stress and emerging pollutants such as cadmium and microplastics are among the most important challenges in plant growth, which affect the uptake and translocation of nutrients. The use of symbiotic fungi has been suggested as a suitable biological approach to mitigate the effects of these stresses. The present study aimed to investigate the effect of symbiosis with the fungus Piriformospora indica on dry matter accumulation, nutrient accumulation, and translocation in kochia (Bassia scoparia) under cadmium and polyvinyl chloride microplastic contamination under drought stress.
Methods: The experiment was conducted in a factorial arrangement based on a completely randomized design with three replications during the vegetative growth stage. The factors included three levels of drought stress (35, 65, and 100% of field capacity), cadmium at two levels (0 and 10 mg kg⁻¹ soil), polyvinyl chloride microplastics at three levels (0, 0.1, and 1% of soil weight), and the presence or absence of the fungus.
Results: The highest percentage of fungal colonization under non-stress conditions was 87%. The presence of cadmium and microplastics in the soil under 65 and 35% field capacity drought stress reduced the percentage of colonization and total plant dry weight by 8 and 36%, respectively. The fungus had positive effects on nutrient uptake, growth, and maintaining the plant’s nutritional balance. Cadmium accumulation, translocation factor, and bioaccumulation showed a decreasing trend under stress conditions. However, symbiosis had a positive effect on cadmium uptake in roots and shoots. Under stress conditions, the concentrations of zinc, iron, and calcium decreased, while magnesium increased in roots and shoots, indicating the plant’s adaptation to maintain ionic balance.
Conclusion: The results of this study showed that P. indica, as a sustainable and suitable biological strategy, improves the plant's ability to phytoremediate cadmium-contaminated soils under microplastic pollution during drought stress.
Methods: The experiment was conducted in a factorial arrangement based on a completely randomized design with three replications during the vegetative growth stage. The factors included three levels of drought stress (35, 65, and 100% of field capacity), cadmium at two levels (0 and 10 mg kg⁻¹ soil), polyvinyl chloride microplastics at three levels (0, 0.1, and 1% of soil weight), and the presence or absence of the fungus.
Results: The highest percentage of fungal colonization under non-stress conditions was 87%. The presence of cadmium and microplastics in the soil under 65 and 35% field capacity drought stress reduced the percentage of colonization and total plant dry weight by 8 and 36%, respectively. The fungus had positive effects on nutrient uptake, growth, and maintaining the plant’s nutritional balance. Cadmium accumulation, translocation factor, and bioaccumulation showed a decreasing trend under stress conditions. However, symbiosis had a positive effect on cadmium uptake in roots and shoots. Under stress conditions, the concentrations of zinc, iron, and calcium decreased, while magnesium increased in roots and shoots, indicating the plant’s adaptation to maintain ionic balance.
Conclusion: The results of this study showed that P. indica, as a sustainable and suitable biological strategy, improves the plant's ability to phytoremediate cadmium-contaminated soils under microplastic pollution during drought stress.
Keywords: Cadmium bioaccumulation, Mineral elements, Mycorrhizal fungus, Polyvinyl chloride, Water stress.
Type of Study: Research |
Subject:
Plant growth under stressful conditions
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Journal of Soil and Plant Interactions by http://jspi.iut.ac.ir is licensed under a Creative Commons Attribution-NonCommercial 4.0 International License.
This work is licensed under a Creative Commons Attribution-NonCommercial 3.0 Unported License which allows users to read, copy, distribute and make derivative works for non-commercial purposes from the material, as long as the author of the original work is cited properly.
This work is licensed under a Creative Commons Attribution-NonCommercial 3.0 Unported License which allows users to read, copy, distribute and make derivative works for non-commercial purposes from the material, as long as the author of the original work is cited properly.
