Weeds ability to phytoremediate cadmium-contaminated soil

Hammami, Hossein; Parsa, M; Mohassel, M H Rashed; Rahimi, Salman; Mijani, Sajad

doi:10.1080/15226514.2015.1058336

Cited by 52 publications

(13 citation statements)

References 22 publications

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“…Besides the accumulation of Na + and Cl − , there are reports regarding its ability to accumulate higher levels of K + in shoots in conditions of salt stress, reflected in the K + /Na + selectivity coefficients [39]. Due to its salt tolerance and edible properties purslane was regarded as a good candidate for soil desalinization [43,44], and given its potential in retaining toxic ions, also in heavy metals decontamination [45][46][47]. In a recent metabolomics study performed on two cultivars of purslane, 132 different metabolites were marked for their significant variation under salinity, notably an increase in proline and other amino acids, neutral and soluble sugars, sugar alcohols, amines, etc.…”

Section: Discussionmentioning

confidence: 99%

Responses to Salt Stress in Portulaca: Insight into Its Tolerance Mechanisms

Borsai

Hassan

Negruşier

et al. 2020

Plants

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Climate change and its detrimental effects on agricultural production, freshwater availability and biodiversity accentuated the need for more stress-tolerant varieties of crops. This requires unraveling the underlying pathways that convey tolerance to abiotic stress in wild relatives of food crops, industrial crops and ornamentals, whose tolerance was not eroded by crop cycles. In this work we try to demonstrate the feasibility of such strategy applying and investigating the effects of saline stress in different species and cultivars of Portulaca. We attempted to unravel the main mechanisms of stress tolerance in this genus and to identify genotypes with higher tolerance, a procedure that could be used as an early detection method for other ornamental and minor crops. To investigate these mechanisms, six-week-old seedlings were subjected to saline stress for 5 weeks with increasing salt concentrations (up to 400 mM NaCl). Several growth parameters and biochemical stress markers were determined in treated and control plants, such as photosynthetic pigments, monovalent ions (Na+, K+ and Cl−), different osmolytes (proline and soluble sugars), oxidative stress markers (malondialdehyde—a by-product of membrane lipid peroxidation—MDA) and non-enzymatic antioxidants (total phenolic compounds and total flavonoids). The applied salt stress inhibited plant growth, degraded photosynthetic pigments, increased concentrations of specific osmolytes in both leaves and roots, but did not induce significant oxidative stress, as demonstrated by only small fluctuations in MDA levels. All Portulaca genotypes analyzed were found to be Na+ and Cl− includers, accumulating high amounts of these ions under saline stress conditions, but P. grandiflora proved to be more salt tolerant, showing only a small reduction under growth stress, an increased flower production and the lowest reduction in K+/Na+ rate in its leaves.

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Section: Discussionmentioning

confidence: 99%

Responses to Salt Stress in Portulaca: Insight into Its Tolerance Mechanisms

Borsai

Hassan

Negruşier

et al. 2020

Plants

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“…On the other hand, only the highest soil Cd level (15 mg kg -1 soil) caused a noticeable reduction in root growth of C. erectus as compared to control treatment. Many previous studies (Wu et al, 2010;Bauddh and Singh, 2012;Abbasi et al, 2015;Hammami et al, 2016) reported reduction in growth of various plant species in response to Cd stress. Contrary to these findings, Manousaki and Kalogerakis Phytoremediation of Cd contaminated soils with tree species (2009) did not observe any significant effect of Cd on the root growth of Atriplex halimus and declared it as a Cd tolerant species.…”

Section: Discussionmentioning

confidence: 99%

COMPARATIVE TOLERANCE AND PHYTOSTABILIZATION POTENTIAL OF Conocarpus erectus AND Eucalyptus camaldulensis GROWN IN CADMIUM CONTAMINATED SOIL

Ashraf¹,

Abbas²,

Murtaza³

et al. 2018

PAKJAS

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Phytoremediation is the most promising approach for the remediation of Cd contaminated soils. In the present study, Cd tolerance and phytoremediation potential of Conocarpus erectus and Eucalyptus camaldulensis, was evaluated in a pot experiment for a growth period of 6 months. Two-month-old plants of uniform size were transplanted in Cd-contaminated soil (0, 5, 10 and 15 mg kg-1), and their growth attributes, chlorophyll contents, root and shoot Cd concentration, bioconcentration factor (BCF) and translocation factor (TF) were determined. With increasing soil Cd levels, shoot and root biomass, leaf water and chlorophyll contents (chl a, chl b and total chl) of E. camaldulensis were decreased more than C. erectus. Shoot and root Cd concentrations as well as Cd uptake were more in C. erectus than E. camaldulensis. The TF was less than one for both plant species, while BCF was more than one. It is concluded that due to relatively higher Cd tolerance and greater capacity to retain higher concentration of Cd in roots, C. erectus is a better species than E. camaldulensis for phytostabilization of Cd contaminated soils.

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“…A third approach has emerged over the past decade to solve the problems of pollution with heavy metals and organic components of wastewater of various sources. Recent works (Glick 2014;Hanin et al 2016;Al-Thani and Yasseen 2018a, 2018bYan et al 2020) have suggested such an approach as an environmentally friendly biological solution for many problems facing the ecosystem and human life in health, agriculture, and economy. Some important facts have emerged from the huge number of published articles about the cooperation between plants and associated microbes in dealing with harsh environmental issues: (1) Efficient phytoremediation actions always come from the cooperation of plants and associated microorganisms by beneficial interactions (Yasseen and Al-Thani 2013;Singh et al 2016;Ojuederie and Babalola 2017), as such combined actions could confer adaptability to harsh environments of drought, salinity, and possibly pollution stresses (Al-Qurainy and Abdel-Megeed 2009; Yasseen et al 2018); (2) Many mechanisms have been adopted by microorganisms to mitigate harsh abiotic stresses facing plants in general and crops in particular, the details of these mechanisms were discussed recently by Al-Thani and Yasseen (2018a); (3) Horizontal gene transfer (HGT) is possible between microorganisms and plants, this could lead to mutual beneficial activities and boosts the ecosystem to deal with harsh environment (Rosewich and Kistler 2000;Bode and M€ uller 2003;Al-Thani and Yasseen 2018b); (4) Plants might secrete exudates at the rhizosphere to stimulate and accelerate some metabolic pathways in microorganisms leading to degradation of petroleum hydrocarbons and/or immobilization of heavy metals (Chen et al 2017;Mishra et al 2017;Jin et al 2019);…”

Section: Biological Approachmentioning

confidence: 99%

Perspectives of future water sources in Qatar by phytoremediation: biodiversity at ponds and modern approach

Al‐Thani

Yasseen

2021

International Journal of Phytoremediation

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Anthropogenic and industrial wastewater (IWW) could be an additional future source of water to support the needs of the people of the State of Qatar. New lagoons have been built using modern technologies to optimize water use and waste recycling, as well as increasing the green spaces around the country. To achieve successful development of these new lagoons, lessons should be learned from the old ponds by examining their biodiversity, ecology, and the roles played by aquatic plants and algae to remediate wastewaters at these ponds. The perspectives of using IWW (from oil and gas activities), that is currently pumped deep into the ground are presented. Instead of causing great damage to groundwater, IWW can be stored in artificial ponds prepared for ridding it of all impurities and pollutants of various types, organic and inorganic, thereby making it serviceable for various human uses. Phycoremediation, bioremediation, and phytoremediation methods adopted by algae, bacteria and aquatic native plants are discussed, and special attention should be paid to those that proved successful in removing heavy metals and degrading organic compounds. At least three native plants namely: Amaranthus viridis, Phragmites australis, and Typha domingensis should be paid special attention, since these plants are efficient in remediation of arsenic and mercury; elements found abundantly in wastewater of gas activities. Some promising modern and innovative experiences and biotechnologies to develop efficient transgenic plants and microorganisms in removing and degrading pollutants are discussed, as an important strategy to keep the ecosystem clean and safe. Novelty statementIndustrial wastewater (IWW) could be an alternative source of water at the Arabian Gulf region. Currently, IWW is pumped deep into the ground causing a great damage to groundwater; little information about this issue has been reported. Such IWW can be stored in artificial ponds designed for ridding them of all impurities of various types; various remediation methods can be used. Modern biotechnology to develop transgenic plants and microorganisms to enhance these remediation methods can be adopted.

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Weeds ability to phytoremediate cadmium-contaminated soil

Cited by 52 publications

References 22 publications

Responses to Salt Stress in Portulaca: Insight into Its Tolerance Mechanisms

Responses to Salt Stress in Portulaca: Insight into Its Tolerance Mechanisms

COMPARATIVE TOLERANCE AND PHYTOSTABILIZATION POTENTIAL OF Conocarpus erectus AND Eucalyptus camaldulensis GROWN IN CADMIUM CONTAMINATED SOIL

Perspectives of future water sources in Qatar by phytoremediation: biodiversity at ponds and modern approach

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