Distinct responses to copper stress in the halophyte Mesembryanthemum crystallinum

Thomas, John C.; Malick, Farah K.; Endreszl, Charles; Davies, Elizabeth C.; Murray, Kent S.

doi:10.1034/j.1399-3054.1998.1020304.x

Cited by 107 publications

(63 citation statements)

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“…Plant can uptake Cu which is a micronutrient (Thomas et al, 1998). Our study found that Cu concentration in the soil was highest in T5.…”

Section: Heavy Metals Concentration In O Stamineus Plant Partsmentioning

confidence: 51%

Using Orthosiphon stamineus B. for Phytoremediation of Heavy Metals in Soils Amended with Sewage Sludge

Abdu¹

2011

American Journal of Applied Sciences

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Problem statement:Phytoremediation is a biological treatment where plants are used to remove pollutants from the environment to make them harmless. A study was conducted in a greenhouse at the Faculty of Forestry, Universiti Putra Malaysia on the potential of Orthosiphon stamineus B. planted in sewage sludge for heavy metals uptake. The objective of this study was to evaluate the ability of O. stamineus to remove toxic heavy metals from sewage sludge. Approach: A total of 36 of O. stamineus were treated at six different levels of soil mixture and sludge treatment including one control. The treatments were replicated six times. Growth parameters mainly height and basal diameter were measured for each plant within 10 weeks. Soil texture (pipette method), soil pH (glass-electrode method) and total carbon (C) (Los on Ignition) were determined. The concentration of heavy metals that include cadmium (Cd), chromium (Cr), zinc (Zn), copper (Cu) and lead (Pb) in the planting media and plant parts were analyzed using Inductively Coupled Plasma-Mass Spectrometry (ICP-MS). Results: There was a significant difference (P≤0.05) in height, basal diameter and number of leaves among the six treatments. The height increment values for all treatments in descending order are: T3 (10.22 cm), T2 (12.42 cm), T1 (13.92 cm), T5 (14.65 cm), T4 (16.20 cm) and C (16.97 cm). In terms of basal diameter, the highest incremental values in ascending order are T5 (0.99 mm), T1 (1.20 mm), T3 (1.31 mm), T2 (1.38 mm), T4 (1.53 mm) and C (1.75 mm). Soil texture for the control is categorized as clay and for T5 is silt loam. Soil reaction is acidic while total carbon ranges from 16.7% to 61.3 %. The concentrations of heavy metals in the planting medium were higher before planting as compared to after planting. For examples, the values for Cd, Cr, Zn, Cu and Pb in T5 (100% sewage sludge) before planting are 0.18 ppm, 23.45 ppm, 290.05 ppm, 17.07 ppm and 5.33 ppm, respectively. The values decreased after planting where 0.13 ppm for Cd, 24.30 ppm for Cr, 252.04 ppm for Zn, 18.56 ppm for Cu and 5.96 ppm for Pb were observed. O. stamineus absorbed heavy metals in the range of 0.01 ppm to 0.57 ppm for Cd, 0.08 ppm to 8.48 ppm for Cr, 0 ppm to 43.93 ppm for Zn, 0.11 ppm to 16.73 ppm for Cu and 0.01 ppm to 9.05 ppm for Pb in various plant parts of leaves, stems and roots. Conclusion: Most of the heavy metals taken up by the plants were stored in the leaves, whereas Zn seemed to be stored in all plant parts. These results indicate that O. stamineus has the potential to accumulate heavy metals particularly Zn, Pb and hence could be considered as a good phytoremediator species.

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“…Plant can uptake Cu which is a micronutrient (Thomas et al, 1998). Our study found that Cu concentration in the soil was highest in T5.…”

Section: Heavy Metals Concentration In O Stamineus Plant Partsmentioning

confidence: 51%

Using Orthosiphon stamineus B. for Phytoremediation of Heavy Metals in Soils Amended with Sewage Sludge

Abdu¹

2011

American Journal of Applied Sciences

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“…The results in Table 1 have shown clearly that, the mean concentration of Cu is higher compared to the published crustal averages. Cu is an important micronutrient for plant (Thomas et al, 1998). It is essential at low concentration but hazardous in plants, animals and human at excessive level.…”

Section: Geochemistry Of the Soil Samplesmentioning

confidence: 99%

Analyzing the environmental impacts and potential health challenges resulting from artisanal gold mining in Shango area of Minna, North-Central, Nigeria

Mamodu

Ojonimi

Apollos

et al. 2018

J.Degrade.Min.Land Manage.

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Abstract:The environmental impact and potential health challenges resulting from artisanal mining inShango area of Minna, North Central Nigeria was put into perspective. The methodology adopted for the research includes field work and laboratory analysis. Results of field observation reveal that mining activity resulted in physical environmental impact such as land degradation, destruction of vegetation, erosion of soils and degrading water quality. Results from the laboratory analyses show that soils are contaminated with elements such as Cu (27.7 ppm), Cd (0.6 ppm), Hg (0.62 ppm) and Ag (0.35 ppm) and generally show high status when compared to published standard for upper continental crust. While, Zn (14.8 ppm), Ni (7.17 ppm), Mn (207 ppm), Pb (0.58 ppm), As (0.4 ppm), Co (0.55 ppm), Mo (0.16 ppm), and Zr (129.8 ppm) are rated low in line with the published standard; other determined elements such as Cr (37.8 ppm), Fe (31.1ppm) and Au (0.2 ppm) are high. These elements can easily be absorbed by plants and subsequently accumulate in their tissues. When such plants are eventually eaten by man, it may lead to different health problems such as slow growth rate, liver and kidney problem. High concentration of these elements in plant tissues may causes different problems.

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“…Heavy metals are taken up into the plant system along with the other nutrients through nutrient absorption process (Liu et al 2007). Cu is considered as an essential micronutrient for plants because of its key role in photosynthesis and other metabolic processes as a cofactor for several enzymes (Thomas et al 1998;Mahmood and Islam 2006;Chatterjee et al 2006). However, presence of excess Cu in growing medium causes phytotoxicity such as leaf chlorosis and retardation in plant growth (MorenoCaselles et al 2000;Lewis et al 2001;Singh and Tewari 2003).…”

Section: Introductionmentioning

confidence: 99%

Bioaccumulation and biochemical responses of Vetiveria zizanioides grown under Cadmium and Copper stresses

Kumar

Bharti

Anand

et al. 2018

Environmental Sustainability

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Pot experiments were carried out to investigate the effects of Copper (Cu) and Cadmium (Cd) on Vetiveria zizanioides. Results revealed that increasing metal concentration in growing medium caused reduction in dry biomass, water content, leaf chlorophyll and soluble protein on exposure of Cu and Cd for 30 days. Cu and Cd accumulation in root and shoot enhanced on increasing Cu and Cd concentration in soil and reached a maximum of 514 and 1069 mg kg −1 dry weight (DW) in root and 58.03 and 17.87 mg kg −1 DW in shoot at exposure of 150 and 75 mg kg −1 of Cu and Cd respectively. Results also showed that the exposure of Cu and Cd in combination was more phytotoxic than the individual treatments. However, Bioconcentraion Factor (BCF) was found to be greater than one indicating suitability of V. zizanioides for phytoremdiation of Cu and Cd from soil. Metal accumulation in roots was much higher than shoots (TF ≪ 1) indicating that the mechanism involved was of phytoextraction.

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Distinct responses to copper stress in the halophyte Mesembryanthemum crystallinum

Cited by 107 publications

References 0 publications

Using <i>Orthosiphon stamineus</i> B. for Phytoremediation of Heavy Metals in Soils Amended with Sewage Sludge

Using <i>Orthosiphon stamineus</i> B. for Phytoremediation of Heavy Metals in Soils Amended with Sewage Sludge

Analyzing the environmental impacts and potential health challenges resulting from artisanal gold mining in Shango area of Minna, North-Central, Nigeria

Bioaccumulation and biochemical responses of Vetiveria zizanioides grown under Cadmium and Copper stresses

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