Phytotoxicity of mercury in Indian mustard (Brassica juncea L.)

Shiyab, Safwan; Chen, Jian; Han, Fengxiang X.; Monts, David L.; Matta, Frank B.; Gu, Mengmeng; Su, Yachun

doi:10.1016/j.ecoenv.2008.06.002

Cited by 83 publications

(21 citation statements)

References 31 publications

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“…This result is a confirmation of investigations conducted by Perez-Sanz et al (2012) for Silene vulgaris L. and Shiyab et al (2009) for Brassica juncea L., who stated that increasing concentration of Hg in soil negatively affected plant accumulation. Slight transfer of Hg to aboveground parts of plants can be a result of plant response to stress conditions caused by mercury presence in soil.…”

Section: Discussionsupporting

confidence: 79%

The potential of Lepidium sativum L. for phytoextraction of Hg-contaminated soil assisted by thiosulphate

Smolińska

Rowe

2014

J Soils Sediments

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Purpose The possibility of using higher plants to extract mercury from contaminated sites is dependent on both the concentration of Hg and its bioavailability. To increase the solubility of Hg in soil, some chemical compounds can be used. The aim of this study was to evaluate the effectiveness of Hg soil cleaning with the use of Lepidium sativum L. and sodium thiosulphate, as well as the leach ability of Hg from soil after phytoextraction. Materials and methods The experiment was conducted on soil artificially polluted by Hg, wherein sodium thiosulphate was tested as a phytoextraction promoter. The L. sativum L. plants were used for phytoextraction. The leaching of Hg was assessed by determination of Hg concentration in water extracts. All determinations of Hg in soil, plant and water extracts were analysed by CV-AAS method after acid mineralization. Results and discussion The result of the study showed that L. sativum L. accumulated Hg from contaminated soil mostly in belowground tissues. Even less than 8 % of Hg was translocated to the shoots of L. sativum L. Application of thiosulphate increased the total Hg accumulation over 238-272 %, depending on both the Hg and thiosulphate concentrations in soil. After thiosulphate treatment, translocation of Hg to shoots of L. sativum L. increased even 10 times relative to unassisted process. Thiosulphate did not negatively affect plant biomass; however, the increased leaching of Hg after thiosulphate treatment was observed. Conclusions Lepidium sativum L. showed the potential of a non-hyperaccumulating plant that can be used during phytoextraction of Hg-contaminated soils in controlled conditions. Thiosulphate promoted the phytoextraction process by increasing the total Hg accumulation by whole plant and translocation of Hg to shoots of L. sativum L. Thiosulphatemobilized Hg in soil, which increased the Hg leaching. This constitutes the limitation of applying the technique in the field due to risk of Hg transferring to deeper layers of soil or water. Applying the technique in the field should be preceded by further investigations.

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Section: Discussionsupporting

confidence: 79%

The potential of Lepidium sativum L. for phytoextraction of Hg-contaminated soil assisted by thiosulphate

Smolińska

Rowe

2014

J Soils Sediments

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“…In Brassica juncea, treatment with 2 μM Hg for 24 h inhibited the root growth by about 80% [45]. Also in Brassica juncea, treatment at 16.7 mg•L −1 Hg for two weeks decreased the dry weight of root and shoot by more than 60% [46]. In Brassica napus, the biomass was decreased by about 60% at 10 mg•L −1 Hg [47].…”

Section: The Influence Of Hgmentioning

confidence: 83%

Influence of Heavy Metals on Seed Germination and Early Seedling Growth in <i>Eruca sativa</i> Mill.

Zhi¹,

Deng²,

Luo³

et al. 2015

AJPS

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Heavy metals present in soil and water naturally or as contaminants from human activities can cause bioaccumulation affecting the entire ecosystem and pose harmful health consequences in all life forms. Some famous non-food hyperaccumulators such as Thlaspi caerulescens, Sedum alfredii, Pteris vittata, Arabidopsis halleri and Athyrium yokoscense are of very little economic value, making it difficult for them to be used for phytoremediation. In this paper, the influence of heavy metals Cu, Ni, Zn, Hg, Cr, Pb and Cd on seed germination and early seedling growth in oil crop Eruca sativa was evaluated under laboratory conditions. Our results indicated that among the 7 heavy metals tested, only Ni at higher concentrations (1 mM and above) significantly decreased the Eruca seed germination in a dose-dependent manner. All heavy metals except Zn and Ni decreased the root length first, then the shoot length or the fresh seedling weight, and seed germination was always the last to be influenced. With Ni, the root length, shoot length and fresh seedling weight were stimulated when Ni concentrations were under 1 mM; with Zn, the root length, shoot length and fresh seedling weight were increased by all concentrations tested (0.20 -5.0 mM). Our results indicated that Eruca is tolerant or moderately tolerant to Cu, Hg, Cr, and Cd and highly tolerant to Pb, Ni and Zn, and can be developed as an industrial oil crop for phytoremediation of soils contaminated by heavy metals.

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“…Thirdly, remote sensing technology can be utilized for the long-term monitoring of phytoremediation. Accumulated metals can signifi cantly change plant physiological status (Shiyab et al 2009 ). The traditional biochemical assay is time/labor consumptive and needs large amounts of plant materials.…”

Section: Regulatory Concerns For the Application Of Phytoremediationmentioning

confidence: 99%

Phytoremediation to Remove Metals/Metalloids from Soils

Chen

Shi

et al. 2015

Phytoremediation

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Phytotoxicity of mercury in Indian mustard (Brassica juncea L.)

Cited by 83 publications

References 31 publications

The potential of Lepidium sativum L. for phytoextraction of Hg-contaminated soil assisted by thiosulphate

The potential of Lepidium sativum L. for phytoextraction of Hg-contaminated soil assisted by thiosulphate

Influence of Heavy Metals on Seed Germination and Early Seedling Growth in <i>Eruca sativa</i> Mill.

Phytoremediation to Remove Metals/Metalloids from Soils

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Phytotoxicity of mercury in Indian mustard (Brassica juncea L.)

Cited by 83 publications

References 31 publications

The potential of Lepidium sativum L. for phytoextraction of Hg-contaminated soil assisted by thiosulphate

The potential of Lepidium sativum L. for phytoextraction of Hg-contaminated soil assisted by thiosulphate

Influence of Heavy Metals on Seed Germination and Early Seedling Growth in &lt;i&gt;Eruca sativa&lt;/i&gt; Mill.

Phytoremediation to Remove Metals/Metalloids from Soils

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Influence of Heavy Metals on Seed Germination and Early Seedling Growth in <i>Eruca sativa</i> Mill.