Assessing the role of cattle manure-derived biochar in stress mitigation of mung bean seedlings growing in arsenate-enriched soil
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View abstract on PubMed
Summary
This summary is machine-generated.Cattle manure biochar mitigates arsenate stress in mung beans by reducing reactive oxygen species and limiting arsenic uptake. This sustainable approach enhances plant resilience and nutrient balance in contaminated agroecosystems.
Area Of Science
- Environmental Science
- Agricultural Science
- Plant Physiology
Background
- Arsenic contamination in agroecosystems poses a significant threat to crop quality and human health.
- Sustainable remediation strategies are crucial for mitigating arsenic's impact on plants.
- Biochar, derived from waste biomass, shows potential for sequestering toxic elements and alleviating plant stress.
Purpose Of The Study
- To evaluate the efficacy of cattle manure-derived biochar in mitigating arsenate (As<sup>5+</sup>) induced stress in mung bean seedlings.
- To investigate the effects of biochar on oxidative stress, antioxidant defense mechanisms, and elemental composition in mung beans under arsenic stress.
Main Methods
- Mung bean seedlings were subjected to arsenate stress with and without cattle manure biochar amendment (1.5% and 2.0% w/w).
- Measurements included plant growth parameters, reactive oxygen species (ROS) production (H<sub>2</sub>O<sub>2</sub>, O<sub>2</sub><sup>•-</sup>), lipid peroxidation (MDA), antioxidant enzyme activities (CAT, SOD), non-enzymatic antioxidants (AsA, GSH), and elemental analysis (SEM-EDX).
- Arsenic accumulation in root and shoot tissues was quantified.
Main Results
- Biochar amendment significantly reduced ROS production (H<sub>2</sub>O<sub>2</sub>, O<sub>2</sub><sup>•-</sup>) and malondialdehyde content in mung bean roots and shoots under arsenate stress.
- Activities of antioxidant enzymes catalase (CAT) and superoxide dismutase (SOD) were significantly enhanced by biochar, while non-enzymatic antioxidants showed less alteration.
- Biochar improved essential element uptake (Si, Mg, Fe, Cu, Ca, Zn) and significantly restricted arsenate accumulation in plant tissues, with 2.0% biochar being more effective.
Conclusions
- Cattle manure biochar effectively alleviates arsenate-induced stress in mung bean seedlings by limiting arsenic uptake and enhancing essential nutrient elements.
- Biochar modulates the oxidative stress response and boosts antioxidant defense metabolism, contributing to improved plant health under arsenic contamination.
- The study highlights the potential of biochar as a sustainable soil amendment for remediating arsenic-contaminated agroecosystems and ensuring food safety.
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