Publications by authors named "Shangyan Hao"
A quantitative review of the effects of biochar application on the reduction of Cu concentration in plant: a meta-analysis.
Environ Sci Pollut Res Int
November 2024
Article Synopsis
- Copper (Cu) contamination in soils, especially from fungicides, poses serious risks to ecosystems and human health, highlighting the need for mitigation strategies.
- This meta-analysis utilized 624 data records from 65 studies to assess how biochar properties and soil conditions affect Cu accumulation in plants.
- Results showed that biochar can reduce plant Cu levels by an average of 23.45%, with higher effectiveness noted in acidic soils and specific biochar types, leading to recommendations for optimal application rates.
Article Synopsis
- Agricultural soils are facing contamination from harmful heavy metals due to human activities, leading to their accumulation in food plants, which poses health risks to humans.
- The study analyzed existing research on using selenium to reduce the uptake of heavy metals in plants and found significant inhibitory effects on metals like mercury, cadmium, and lead.
- Selenium's effectiveness in reducing heavy metal accumulation varies based on factors like soil pH, plant species, and organ type, with better results observed in acidic and neutral soils.
Arsenic (As) accumulation in plants is a global concern. Although the application of arbuscular mycorrhizal fungi (AMF) has been suggested as a potential solution to decrease As concentration in plants, there is currently a gap in a comprehensive, quantitative assessment of the abiotic and biotic factors influencing As accumulation. A meta-analysis was performed to quantitatively investigate the findings of 76 publications on the impacts of AMF, plant properties, and soil on As accumulation in plants.
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- * Exogenous selenium (Se) can potentially reduce Hg concentrations in plants, but research on its effectiveness has been inconsistent; a meta-analysis of 1,193 data records showed a significant dose-dependent reduction in Hg when Se was applied.
- * The optimal Se/Hg molar ratio for minimizing Hg accumulation in plants is 1-3, with Se(VI) being more effective than Se(IV); this indicates that using Se can help decrease Hg levels in crops like rice, reducing risks to human health.
Arsenic (As) is a pollutant with a strong toxic effect on animals, plants and human beings. Exogenous selenium (Se) has been suggested to reduce the accumulation of As in crops, but contradictory results were found in the published literature. In order to clarify the possible processes, we collected the literature that reports on the effects of Se application on As uptake and accumulation in crops, analyzed the data by meta-analysis, and tested the effects of different factors on As accumulation by meta-regression model and subgroup analysis.
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