Influence of sulfur on the accumulation of mercury in rice plant ( Oryza sativa L.) growing in mercury contaminated soils

Li, Yunyun; Zhao, Jiating; Guo, Jingxia; Liu, Mengjiao; Xu, Qin; Liao, Hong; Zheng, Lei; Zhang, Zhi Yong

doi:10.1016/j.chemosphere.2017.04.129

Cited by 73 publications

(16 citation statements)

References 27 publications

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“…As discussed earlier, AsIII is highly thiol-reactive and can complex with S in the soil such as AsIII−sulfides, [41][42][43]59 and it is also possible that AsIII may be directly adsorbed on the high surface area of NS particles. A similar report by Li et al 67 has demonstrated the effect of S at restricting Hg bioavailability via increasing the formation of insoluble Hg sulfide (HgS) and thus restricted Hg accumulation in rice grain, straw, and roots. Further, it is possible that AsIII and NS interactions in soil and S-induced formation of iron (Fe) plaque on the root surface could also restrict As uptake.…”

Section: ■ Materials and Methodssupporting

confidence: 93%

Nanoscale Sulfur Improves Plant Growth and Reduces Arsenic Toxicity and Accumulation in Rice (Oryza sativa L.)

Meselhy

Sharma

Guo

et al. 2021

Environ. Sci. Technol.

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Rice is known to accumulate arsenic (As) in its grains, posing serious health concerns for billions of people globally. We studied the effect of nanoscale sulfur (NS) on rice seedlings and mature plants under As stress. NS application caused a 40% increase in seedling biomass and a 26% increase in seed yield of mature plants compared to untreated control plants. AsIII exposure caused severe toxicity to rice; however, coexposure of plants to AsIII and NS alleviated As toxicity, and growth was significantly improved. Rice seedlings treated with AsIII + NS produced 159 and 248% more shoot and root biomass, respectively, compared to plants exposed to AsIII alone. Further, AsIII + NS-treated seedlings accumulated 32 and 11% less As in root and shoot tissues, respectively, than the AsIII-alone treatment. Mature plants treated with AsIII + NS produced 76, 110, and 108% more dry shoot biomass, seed number, and seed yield, respectively, and accumulated 69, 38, 18, and 54% less total As in the root, shoot, flag leaves, and grains, respectively, compared to AsIII-alone-treated plants. A similar trend was observed in seedlings treated with AsV and NS. The ability of sulfur (S) to alleviate As toxicity and accumulation is clearly size dependent as NS could effectively reduce bioavailability and accumulation of As in rice via modulating the gene expression activity of As transport, S assimilatory, and glutathione synthesis pathways to facilitate AsIII detoxification. These results have significant environmental implications as NS application in agriculture has the potential to decrease As in the food chain and simultaneously enable crops to grow and produce higher yields on marginal and contaminated lands.

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Section: ■ Materials and Methodssupporting

confidence: 93%

Nanoscale Sulfur Improves Plant Growth and Reduces Arsenic Toxicity and Accumulation in Rice (Oryza sativa L.)

Meselhy

Sharma

Guo

et al. 2021

Environ. Sci. Technol.

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“…Hg increases its bioavailability at acidic pH because free H + ions combine with colloidal substances that have a negative charge and Hg 2+ will be released into the liquid phase of the soil [ 65 ]. However, in the presence of sulfur, it can decrease its bioavailability by forming sulfur compounds that are stable and insoluble to be accumulated or translocated to plants [ 66 ]. Likewise, other studies have evidenced the low bioavailability of Hg and Pb in agricultural soils, mining soils, or soils affected by mining activities [ 53 , 67 , 68 , 69 , 70 , 71 , 72 , 73 , 74 ].…”

Section: Resultsmentioning

confidence: 99%

Phytoremediation of Soils Contaminated with Heavy Metals from Gold Mining Activities Using Clidemia sericea D. Don

Durante-Yánez

Macea

Enamorado-Montes

et al. 2022

Plants

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Soils contaminated by potentially toxic elements (PTEs) as a result of anthropogenic activities such as mining are a problem due to the adverse effects on human and environmental health, making it necessary to seek sustainable strategies to remediate contaminated areas. The objective of this study was to evaluate the species Clidemia sericea D. Don for the phytoremediation of soils contaminated with PTEs (Hg, Pb, and Cd) from gold mining activities. The study was conducted for three months, with soils from a gold mining area in northern Colombia, and seeds of C. sericea, under a completely randomized experimental design with one factor (concentration of PTEs in soil) and four levels (control (T0), low (T1), medium (T2), and high (T3)), each treatment in triplicate, for a total of twelve experimental units. Phytotoxic effects on plants, bioconcentration (BCF), and translocation (TF) factors were determined. The results obtained for the tissues differed in order of metal accumulation, with the root showing the highest concentration of metals. The highest values of bioconcentration (BCF > 1) were presented for Hg at T3 and Cd in the four treatments; and of translocation (TF > 1) for Hg and Pb at T0 and T1; however, for Pb, the TF indicates that it is transferable, but it is not considered for phytoextraction. Thus, C. sericea demonstrated its potential as a phytostabilizer of Hg and Cd in mining soils, strengthening as a wild species with results of resistance to the stress of the PTEs evaluated, presenting similar behavior and little phytotoxic affectation on the growth and development of each of the plants in the different treatments.

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“…Elemental sulfur, which has a slow-release acidifying property and is easily available, has a beneficial influence on soil pH and helps to improve metal solubility [54,[256][257][258][259]. Moreover, sulfur is one of the most common and cost-effective natural acidifying components, among most other factors.…”

Section: Biological Sulfur Oxidation To Reduce Ph and Enhance Metal Bioavailability In Soilmentioning

confidence: 99%

Phytoremediation of Toxic Metals: A Sustainable Green Solution for Clean Environment

Babu¹,

Hossain

Rahman

et al. 2021

Applied Sciences

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Contamination of aquatic ecosystems by various sources has become a major worry all over the world. Pollutants can enter the human body through the food chain from aquatic and soil habitats. These pollutants can cause various chronic diseases in humans and mortality if they collect in the body over an extended period. Although the phytoremediation technique cannot completely remove harmful materials, it is an environmentally benign, cost-effective, and natural process that has no negative effects on the environment. The main types of phytoremediation, their mechanisms, and strategies to raise the remediation rate and the use of genetically altered plants, phytoremediation plant prospects, economics, and usable plants are reviewed in this review. Several factors influence the phytoremediation process, including types of contaminants, pollutant characteristics, and plant species selection, climate considerations, flooding and aging, the effect of salt, soil parameters, and redox potential. Phytoremediation’s environmental and economic efficiency, use, and relevance are depicted in our work. Multiple recent breakthroughs in phytoremediation technologies are also mentioned in this review.

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Influence of sulfur on the accumulation of mercury in rice plant ( Oryza sativa L.) growing in mercury contaminated soils

Cited by 73 publications

References 27 publications

Nanoscale Sulfur Improves Plant Growth and Reduces Arsenic Toxicity and Accumulation in Rice (Oryza sativa L.)

Nanoscale Sulfur Improves Plant Growth and Reduces Arsenic Toxicity and Accumulation in Rice (Oryza sativa L.)

Phytoremediation of Soils Contaminated with Heavy Metals from Gold Mining Activities Using Clidemia sericea D. Don

Phytoremediation of Toxic Metals: A Sustainable Green Solution for Clean Environment

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