Arsenic Accumulation in Pakchoi Influenced by Acidification-Driven Changes in Soil Properties and Arsenic Transformation

Agriculture, Journal Year: 2025, Volume and Issue: 15(4), P. 364 - 364

Published: Feb. 8, 2025

Soil acidification activates most of the cationic heavy metals in soil and thus enhances their accumulation crops, posing an accentuated threat to human health, while there is limited knowledge regarding metalloid arsenic (As) which influenced by due its opposite behavior soil. In this study, processes neutral purple together with accompanied changes properties As fractionation were examined through a column-leaching experiment. Subsequently, growth pakchoi (Brassica campestris L.) investigated under various combinations pH pollution levels pot This allowed us elucidate mechanisms co-stresses pollution. The results indicated that followed two-phase process, initially rapid later slow, turning point at 4.7–4.8. Below critical pH, leaching rates base ions accelerated significantly decomposition primary minerals began, primarily from chlorite green/mesospheric minerals, resulting substantial increase content amorphous iron oxide. Meantime, was transformed highly labile forms, such as non-specifically specifically adsorbed less active ones like hydrous oxide-bound residual decreased availability. context, remarkably delayed pakchoi, influence on only occurred when acidified lower than 6, demonstrated biomass reduction higher 41.8% decrease 4.6. Moreover, exacerbated inhibitory effect growth. contents edible parts dramatically increased level, did not mitigate plants via suppression availability but rather greatly it bioconcentration caused toxicity. conclusion, significant interactions existed between terms transformation, leading comprehensive effects crops.

Language: Английский

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Effect of cadmium-resistant Proteus mirabilis Ch8 on active ingredients and cadmium content of traditional Chinese medicine Ligusticum sinense cv. Chuanxiong

Plant and Soil, Journal Year: 2025, Volume and Issue: unknown

Published: March 31, 2025

Language: Английский

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The Strategies Microalgae Adopt to Counteract the Toxic Effect of Heavy Metals

Microorganisms, Journal Year: 2025, Volume and Issue: 13(5), P. 989 - 989

Published: April 25, 2025

Besides biomass production, some microalgae have been used to treat wastewater contamination. However, in general, high concentrations of heavy metals significantly inhibit algal growth. We thus need find ways promote the resistance metals, increase their growth rate under stress, and achieve coupling metal removal production simultaneously. In this review, mechanisms for by are proposed. Effects exogenous chemical additives (dissolved organic matters, formaldehyde, sulphate, phosphate, nitric oxide donors, etc.) on biosorption summarized. Genetic manipulation microalgal strain selection strategies also introduced, especially acid-tolerant strains with efficiencies Cr(VI) Cd2+ at low pH conditions. Recent advances (semi)continuous heavy-metal-bioremediation biomass-production coupled system immobilized microalgae, as well challenges solutions commercialization industrialization were discussed.

Language: Английский

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Amino-functionalized biochar enhanced Cd passivation in acidic, neutral and alkaline soils: effect and mechanism

Journal of Soils and Sediments, Journal Year: 2025, Volume and Issue: unknown

Published: April 25, 2025

Language: Английский

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