Heavy metal contamination from mining sites in South Morocco: 2. Assessment of metal accumulation and toxicity in plants

Boularbah, Ali; Schwartz, Christophe; Bitton, Gabriel; Aboudrar, Wafae; Ouhammou, Ahmed; Morel, Jean-Louis

doi:10.1016/j.chemosphere.2005.07.076

Cited by 238 publications

(129 citation statements)

References 14 publications

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“…The plants' response to trace metals in the soil depends on the total soil metal concentration, the plant species, and on the bioavailability of the metal itself [17,24].…”

Section: Discussionmentioning

confidence: 99%

Heavy metal content in halophytic plants from inland and maritime saline areas

et al. 2012

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We investigated the concentration of Aluminium (Al), Cobalt (Co), Chromium (Cr), Copper (Cu), Iron (Fe), Manganese (Mn), Nickel (Ni) and Zinc (Zn) in the root and aboveground organs of four halophyte species (Salicornia europaea, Suaeda maritima, Salsola soda and Halimione portulacoides), as well as in the soil from maritime and inland saline areas. The aim of our research was to evaluate the capability of some halophyte species to absorb different heavy metals and to detect differentiation of heavy metal accumulation within populations from inland and maritime saline areas. Generally, the plant roots had significantly higher concentrations of metals when compared to stems and leaves. Zinc was the only metal with concentrations significantly higher in the leaves than in the root and stem. Populations from maritime saline areas had higher trace root and stem metal concentrations than populations from inland saline areas. Excepting zinc, populations from inland saline areas had higher heavy metal concentrations in the leaves. The factors that affected metal accumulation by halophytes included the percentage of salt in the soil. We also discuss the potential use of these halophytes in phytoremediation.

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“…The plants' response to trace metals in the soil depends on the total soil metal concentration, the plant species, and on the bioavailability of the metal itself [17,24].…”

Section: Discussionmentioning

confidence: 99%

Heavy metal content in halophytic plants from inland and maritime saline areas

et al. 2012

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“…This result might be related to the presence of exclusion and sequestering processes that moderate metal uptake by roots and induce their accumulation in tissues (González-Mendoza et al, 2007). The presence of higher values of Cu 2+ found in roots and the low value for aerial parts/root translocation index found in P. juliflora exposure during 48 h, suggest a metal exclusion mechanism might be operating, as described by Baker (1981) and Boularbah et al (2006).…”

Section: Time Of Exposure (H)mentioning

confidence: 84%

“…Because has lower concentrations of Cu +2 (0.531 μg g -1 ) than 1000 μg g -1 , which are the limits prescribed for a hyperaccumulator (Boularbah et al, 2006;Zappala et al, 2014).…”

Section: Time Of Exposure (H)mentioning

confidence: 99%

Bioaccumulation and changes in the photosynthetic apparatus of Prosopis juliflora exposed to copper

et al. 2016

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The effect of copper toxicity on the photosynthetic activities and bioaccumulation in different tissues of Prosopis juliflora was investigated using three CuSO 4 concentrations (10, 50 and 100 mM) added under hydroponic conditions. Copper concentration and chlorophyll fluorescence were measured after 48 h of copper stress. The results obtained in this study show that increasing levels of 50 and 100 mM Cu 2+ resulted in a significant accumulation of this metal mainly in roots compared with control roots. On the other hand, our result showed a significant reduction of maximum photochemical efficiency of photosystem II (Fv/Fm) and the activity of photosystem II (F v /F 0 ) ratios in P. juliflora leaf treated with 100 mM Cu 2+ with respect to control after 4h of exposure. These changes suggested that the photosynthetic apparatus of P. juliflora was the primary target of the Cu 2+ action. Therefore the information provided by this short-term (48 h) experiment in P. juliflora showed that several physiological processes are activated, in which the copper uptake by roots and their accumulation in tissues play a central role. In conclusion, the chlorophyll fluorescence parameters can be used as a useful physiological tool to assess early changes in photosynthetic performance of P. juliflora in response to copper pollution in short-term. Finally, the present study showed that P. juliflora is a promising prospect for heavy metals phytoremediation purposes occurring in arid and semi-arid climates in the northwest Mexico.

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“…Boularbah et al [57] defined an excluder as a plant species that can have high levels of heavy metals in the roots, but always has a shoot/root quotient of less than one. Salix (willow) species are examples of metal excluders.…”

Section: Plant Strategies For Growth In Contaminated Soilsmentioning

confidence: 99%

Phytoextraction as a tool for green chemistry

Hunt

Anderson²,

Bruce

et al. 2014

Green Processing and Synthesis

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Abstract:The unique chemical and physical properties of metals mean that they are extensively utilized by industry in a huge variety of applications, including electronics, materials, industrial catalysts and chemicals. The increased consumer demand from a growing population worldwide with rising aspirations for a better life has resulted in concerns over the security of supply and accessibility of these valuable elements. As such, there is a growing need to develop alternative methods to recover them from waste repositories, current or historic, both for hazard avoidance and potentially, as a new source of metals for industry. Phytoextraction (the use of plants for the recovery of metals from waste repositories) is a green and novel technique for metal recovery, which, if done with the goal of resource supply rather than hazard mitigation, is termed "phytomining". The ability for plants to form metallic nanoparticles as a consequence of phytoextraction could make the recovered metal ideally suited for utilization in green chemical technologies, such as catalysis. This review focuses on a multidisciplinary approach to elemental sustainability and highlights important aspects of metal lifecycle analysis, metal waste sources (including mine tailings), phytoextraction and potential green chemical applications that may result from the integration of these approaches.

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Heavy metal contamination from mining sites in South Morocco: 2. Assessment of metal accumulation and toxicity in plants

Cited by 238 publications

References 14 publications

Heavy metal content in halophytic plants from inland and maritime saline areas

Heavy metal content in halophytic plants from inland and maritime saline areas

Bioaccumulation and changes in the photosynthetic apparatus of Prosopis juliflora exposed to copper

Phytoextraction as a tool for green chemistry

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