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An Impact Of Microplastic And Microplastic + Lead Induced Toxicity On Growth Parameters And Chlorophyll Content Of Tomato Plant: (Comparison Study)
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Researchers grew tomato plants in soil spiked with polyethylene microplastics alone and combined with lead nitrate at multiple concentrations to compare their toxicity. Both treatments reduced shoot length, fresh and dry weight, and chlorophyll content in a dose-dependent manner, with the combined microplastic-plus-lead treatment causing more severe harm than either pollutant alone.
The environmental damage caused by microplastics (MPs) and how it affects plants has become a global concern, but the synergistic effect of microplastic + heavy metal remains scarce. This research aim to gain insight into the comparison study of effect of (PE) microplastic and (PE) microplastic + lead nitrate with different concentration (control, 50mg/L, 100mg/L, 150mg/L, 200mg/L + Control, 0.05mg/L, 0.1mg/L, 0.15mg/L, 0.2mg/L) on the tomato plants: (parameters: growth parameters, fresh weight, dry weight and chlorophyll content). in this study we conclude that as the concentration of microplastic and lead increases the parameters like shoot length, fresh weight, dry weight and chlorophyll content decreases and root length increases. We also found that combined toxicity is more toxic than the single microplastic toxicity, as the concentration increases from control to 50mg/L in case of single microplastic toxicity the effect is quiet less but in case of combined toxicity there is huge difference in toxicity and at the concentration of 200mg/L + 0.2mg/L+ the germination is around negligible. In combined toxicity root length is also decreases as the shoot length. These findings suggest that bio-accumulation of lead nitrate by polyethylene microplastic is responsible for the suspension in growth parameters and huge effect in physiological parameters like chlorophyll content. As tomato crops are economically important plants, increase in polyethylene microplastic + uptake of lead nitrate in agricultural fields may have a negative influence on this economically important crop production that result into a loss of economy.
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Researchers grew tobacco plants in soil contaminated with both polyethylene microplastics and lead, finding that the combination caused greater damage to photosynthesis and plant growth than either pollutant alone, while microplastics partially reduced how much lead roots absorbed. The study shows that microplastic and heavy metal co-contamination — increasingly common in agricultural soils — poses compounding risks to crop health.
Impact of Microplstic and Lead Toxicity on the Terrestrial Plants: a Critical Review
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This review examines the toxic effects of microplastics and lead on terrestrial plants, synthesizing evidence that MPs modify soil physicochemical properties and enzymatic activity while lead disrupts root and shoot biomass, leaf development, and growth tolerance. Combined microplastic-lead exposure is found to be more damaging than either stressor alone, with implications for agricultural productivity in contaminated soils.
Effects of polypropylene microplastics and lead (Pb) contamination on soil properties and the growth response of Ficus Benjamina
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Researchers found that polypropylene microplastics and lead contamination together cause greater harm to soil chemistry and plant growth than either contaminant alone, with Ficus plants showing significantly reduced leaf area, root length, and total biomass when exposed to both. Microplastics also lowered soil pH and depleted essential nutrients, compounding the toxic effects of the heavy metal.
Comparison Study of Effect of HDPE Microplastic, Lead Nitrate and Synergistic Effect of Lead Nitrate and HDPE Microplastics on Germination Study of Tomato Seeds (Pusa Ruby)
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Scientists found that tiny plastic particles (microplastics) and lead each slow down tomato seed sprouting and growth — and when combined, they're even more harmful together than either one alone. This matters because both microplastics and lead are already common in soil and water, and this research suggests they could team up to threaten how well our food crops grow, which could eventually affect food supply and quality.
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This study tested how microplastic-contaminated soil affects tomato plant growth, finding that higher concentrations of plastic particles in soil reduced plant height, root development, and overall crop health. The results suggest that microplastic pollution in farmland could reduce food crop yields and potentially affect the quality of the produce we eat.
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