Phytoremediation and Reclamation of Soils Contaminated with Radionuclides

Entry, James A.; Watrud, Lidia S.; Manasse, Robin S.; Vance, Nan C.

doi:10.1021/bk-1997-0664.ch022

Cited by 35 publications

(25 citation statements)

References 24 publications

(34 reference statements)

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Section: Discussionmentioning

confidence: 99%

“…Some researchers noticed that sunflower could accumulate U in the roots with concentrations 5000-10 000 times greater than that in the water (Entry et al, 1996). This plant also produces large biomass, and as a result was considered as best candidate for treatment of U contaminated water Salt et al, 1995;Entry et al, 1996). Chinese brake fern is also reported as fast growing and high biomass plant with particular tolerance to As (Ma et al, 2001), and therefore it can be exploited for rhizofiltration purposes especially on As and U combined contaminated sites.…”

Section: Discussionmentioning

confidence: 99%

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Effects of arbuscular mycorrhizal inoculation on uranium and arsenic accumulation by Chinese brake fern (Pteris vittata L.) from a uranium mining-impacted soil

2006

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A glasshouse experiment was conducted to investigate U and As accumulation by Chinese brake fern, Pteris vittata L., in association with different arbuscular mycorrhizal fungi (AMF) from a U and As contaminated soil. The soil used contains 111 mg U kg À1 and 106 mg As kg À1. P. vittata L. was inoculated with each of three AMF, Glomus mosseae, Glomus caledonium and Glomus intraradices. Two harvests were made during plant growth (two and three months after transplanting). Mycorrhizal colonization depressed plant growth particularly at the early stages. TF (transfer factor) values for As from soil to fronds were higher than 1.0, while those for roots were much lower. Despite the growth depressions, AM colonization had no effect on tissue As concentrations. Conversely, TF values for U were much higher for roots than for fronds, indicating that only very small fraction of U was translocated to fronds (less than 2%), regardless of mycorrhizal colonization. Mycorrhizal colonization significantly increased root U concentrations at both harvests. Root colonization with G. mosseae or G. intraradices led to an increase in TF values for U from 7 (non-inoculation control) to 14 at the first harvest. The highest U concentration of 1574 mg kg À1 was recorded in roots colonized by G. mosseae at the second harvest. The results suggested that P. vittata in combination with appropriate AMF would play very important roles in bioremediation of contaminated environments characterized by a multi-pollution.

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Section: Discussionmentioning

confidence: 99%

Section: Discussionmentioning

confidence: 99%

Effects of arbuscular mycorrhizal inoculation on uranium and arsenic accumulation by Chinese brake fern (Pteris vittata L.) from a uranium mining-impacted soil

2006

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“…Dubchak et al / Span J Agric Res (2010) 8(S1), S103-S108 2008), including various mechanisms that could be potentially involved in the transport and immobilization of radiocaesium. According to literature, depending on the plant, AM fungal species and on the experimental conditions, the accumulation of radiocaesium in mycorrhizal plants can be lower (Dighton and Terry, 1996;Berreck and Haselwandter, 2001), similar (Rogers and Williams, 1986;Roseen et al, 2005) or higher (McGraw et al, 1979;Entry et al, 1996;Roseen et al, 2005) than in nonmycorrhizal plants. In the present study Helianthus annuus was used.…”

Section: S106mentioning

confidence: 99%

Influence of silver and titanium nanoparticles on arbuscular mycorrhiza colonization and accumulation of radiocaesium in Helianthus annuus

Dubchak

Ogar

Mietelski

et al. 2010

Span. j. agric. res.

159

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The influence of arbuscular mycorrhizal fungus on 134Cs uptake by Helianthus annuus was studied in a pilot study under growth chamber conditions. Mycorrhizal plants took up five times more 134Cs (up to 250,000 Bq kg-1 dry weight) than non mycorrhizal plants. Silver and titanium nanoparticles, supplied into the surface soil layer decreased both the mycorrhizal colonization and Cs uptake by mycorrhizal plants. The application of activated carbon attenuated the effect of nanoparticles and increased 134Cs uptake in the presence of mycorrhizal fungi (up to 400,000 Bq kg-1 dry weight). The results underline the possible application of phytoremediation techniques based on mycorrhiza assisted plants in decontamination of both radionuclides and nanoparticles.

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“…To limit caesium dispersion in the environment, various remedial actions including mineral amendments, K fertilization agricultural-based countermeasures 7 , and chemical and bioindicator methods 8 have been proposed. Of them, phytoremediation was regarded as the most compatible method for long-term bioremediation of radiocaesium contaminated soils, because it is not destructive for the environment 9 . The plants used for bioremediation however do not grow well or even die in environments contaminated with lowlevel of radionuclides, which destroys the rhizosphere microenvironment of the plants 10,11 .…”

Section: Introductionmentioning

confidence: 99%

Effects of arbuscular mycorrhizal fungi on caesium accumulation and the ascorbate-glutathione cycle of Sorghum halepense

Rong-lin¹,

Lu²,

Yang³

et al. 2016

ScienceAsia

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A pot experiment was conducted to study the effects of Glomus mosseae and Glomus versiforme on the ascorbate-glutathione cycle metabolism and caesium enrichment in roots and leaves of Sorghum halepense. The results showed that inoculated G. mosseae and G. versiforme significantly increased the concentrations of ascorbate (AsA) and reduced glutathione (GSH), the ratios of AsA/DHA (dehydroascorbate) and GSH/GSSG (oxidized glutathione) in roots and leaves of S. halepense in Cs contaminated soil. Additionally, the inoculated arbuscular mycorrhizal fungi increased the antioxidant enzyme activities of the ascorbate-glutathione cycle, with the best efficiency provided by G. mosseae. The activities of antioxidant enzymes (ascorbate peroxidase, APX, EC 1.11.1.11; dehydroascorbate reductase, DHAR, EC 1.8.5.1; and glutathione reductase, glutathione reductase (GR), EC 1.8.1.7) in the roots were, respectively, 4.7, 3.6, and 2.3 times higher than those in non-inoculated roots, and the activities of DHAR was 1.7 times higher than that in non-inoculated leaves. However, G. versiforme increased the activity of monodehydroascorbate reductase (MDHAR, EC 1.6.5.4) 2.39 U/g fresh weight, and the activities of APX and GR were 6.8 and 1.4 times higher than for nonmycorrhizal plants. G. versiforme also increased the accumulation of caesium in roots and leaves but to a lesser extent than G. mosseae, and with a positive effect on translocation. Thus arbuscular mycorrhizal fungi promotes efficient operation of ascorbate-glutathione cycle in the roots and leaves of S. halepense, enhancing its tolerance to Cs stress.

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Phytoremediation and Reclamation of Soils Contaminated with Radionuclides

Cited by 35 publications

References 24 publications

Effects of arbuscular mycorrhizal inoculation on uranium and arsenic accumulation by Chinese brake fern (Pteris vittata L.) from a uranium mining-impacted soil

Effects of arbuscular mycorrhizal inoculation on uranium and arsenic accumulation by Chinese brake fern (Pteris vittata L.) from a uranium mining-impacted soil

Influence of silver and titanium nanoparticles on arbuscular mycorrhiza colonization and accumulation of radiocaesium in Helianthus annuus

Effects of arbuscular mycorrhizal fungi on caesium accumulation and the ascorbate-glutathione cycle of Sorghum halepense

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