Metal phytoremediation: General strategies, genetically modified plants and applications in metal nanoparticle contamination

Gomes, Maria Angélica da Conceição; Hauser‐Davis, Rachel Ann; Souza, Adriane Nunes de; Vitória, Ângela Pierre

doi:10.1016/j.ecoenv.2016.08.024

Cited by 160 publications

(32 citation statements)

References 114 publications

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“…Moreover, 0.1 and 0.5 mg/L kinetin, 0.1 and/or 1 mg/L of GA 3 , and 0.1 and/or 1 mg/L of NAA showed an accelerative effect on the number of newly formed ramets. The weight of the community formed from a young ramet increased remarkably in response to 0.5 mg/L of kinetin without GA 3 and NAA. However, the addition of GA 3 and/or NAA tended to show a suppressive effect on the number of newly formed ramets and the weight of the community formed from a young ramet in the absence of kinetin.…”

Section: Analysis Of Effective Growth Conditions For Individual Youngmentioning

confidence: 99%

“…The weight of the community formed from a young ramet increased remarkably in response to 0.5 mg/L of kinetin without GA 3 and NAA. However, the addition of GA 3 and/or NAA tended to show a suppressive effect on the number of newly formed ramets and the weight of the community formed from a young ramet in the absence of kinetin. Considering the remarkable accelerative effect of kinetin, we used it independently in further experiments.…”

Section: Analysis Of Effective Growth Conditions For Individual Youngmentioning

confidence: 99%

“…Digestion of Plants for the Measurement of Cs, Zn, Pb, Cd, and In Harvested E. acicularis was washed thoroughly with DIW and dried in a ventilated oven at 80 • C for 48 h. The dried samples were ground into a fine powder using an agate mortar. For the measurement of Cs, Zn, Pb, Cd, and In, 20 mg of pulverized powder was digested in a polytetrafluoroethylene (PTFE) digestion vessel with a solution of H 2 O 2 , HNO 3 , and HF at 160 • C for 30 min and subsequent processing as described previously [13]. The resulting digested sample in 1.00 mL of 30% HNO 3 was diluted by 3% HNO 3 and used as the solution for analysis.…”

Section: Methodsmentioning

confidence: 99%

“…These hormones have been used for the promotion of growth in several plants that form stolons [18,19]. We studied 64 culture conditions with various combinations of kinetin (0, 0.1, 0.5, 2.5 mg/L), GA 3 (0, 0.01, 0.1, 1 mg/L) for 4 weeks and measured the number of newly formed ramets and the weights of communities formed from a ramet (Figure 3). Kinetin concentrations of 0.1 and 0.5 mg/L showed an accelerative effect on the number of newly formed ramets.…”

Section: Analysis Of Effective Growth Conditions For Individual Youngmentioning

confidence: 99%

“…The linear analytical calibration curves (R 2 = 0.9999 for Zn, 0.99865 for Pb, 0.99903 for Cd, and 0.99901 for In) were created from 0, 10, 100, and 200 µg/L of Zn, Pb, and Cd using ZnSO 4 3 . The detection limits of Zn, Pb, Cd, and In in ICP-AES were 0.3, 5, 0.3, and 2 µg/L, respectively.…”

Section: Icp-aes Analysismentioning

confidence: 99%

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Establishment of an Aseptic Culture System and Analysis of the Effective Growth Conditions for Eleocharis acicularis Ramets for Use in Phytoremediation

et al. 2017

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Eleocharis acicularis, an aquatic macrophyte of the Cyperaceae family, has been shown to accumulate multiple heavy metals and has great potential for use in the phytoremediation of contaminated soil and water. To investigate the mechanism of accumulation of heavy metals in E. acicularis while excluding biotic and abiotic environmental effects and to acquire homogenous and sufficient populations of E. acicularis, we established an aseptic culture system and analyzed the applicability of this species for phytoremediation. Young ramet bases and stolon tips of E. acicularis grown in the field were sterilized, cultured, and established in an aseptic culture system, and the effective growth conditions of isolated ramets were determined. Isolated ramets grew remarkably well in a medium of pH 4.8 to 5.7 with 0.25 mg/L kinetin as a plant hormone. Furthermore, capacity for the accumulation of heavy metals was examined using E. acicularis subcultured with or without Si. Aseptically cultured E. acicularis showed a sufficient capacity for Cs and Zn accumulation and exceeded the criteria for hyperaccumulator plants in accumulating Pb, Cd, and In regardless of the addition or not of Si during its subculture. The aseptic culture of E. acicularis enhances its capacity for the accumulation of heavy metals and its applicability for phytoremediation.

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Section: Analysis Of Effective Growth Conditions For Individual Youngmentioning

confidence: 99%

Section: Analysis Of Effective Growth Conditions For Individual Youngmentioning

confidence: 99%

Section: Methodsmentioning

confidence: 99%

Section: Analysis Of Effective Growth Conditions For Individual Youngmentioning

confidence: 99%

Section: Icp-aes Analysismentioning

confidence: 99%

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Establishment of an Aseptic Culture System and Analysis of the Effective Growth Conditions for Eleocharis acicularis Ramets for Use in Phytoremediation

et al. 2017

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Bioremediation

Prince¹

2019

Kirk-Othmer Encyclopedia of Chemical Technology

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Bioremediation is the process of thoughtfully exploiting biological processes to minimize an unwanted environmental impact; usually the aim is the removal of a contaminant from the biosphere. Like most definitions in biology, that of bioremediation is the subject of some debate. A narrow definition might focus on the conversion of contaminating organic molecules to CO 2 , water, and inorganic ions, and the oxidation or reduction of contaminating inorganic ions such as nitrate or ammonia to harmless forms, in this case nitrogen gas. A broader definition would include biological processes for ameliorating extremes of pH, concentrating contaminants so that they can be more easily removed by physical techniques, converting toxic species to less toxic or less bioavailable forms that pose less of a threat to the environment, and restoring functional ecosystems to contaminated or disturbed sites when the contaminants or disturbance cannot be removed.

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