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Evaluation of the Ni<sup>2+</sup> Phytoextraction Potential in <em>Mesembryanthemum crystallinum</em> (Halophyte) and Brassica juncea | OMICS International | Abstract
ISSN: 2155-6199

Journal of Bioremediation & Biodegradation
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Research Article

Evaluation of the Ni2+ Phytoextraction Potential in Mesembryanthemum crystallinum (Halophyte) and Brassica juncea

Amari T1*, Ghnaya T1, Sghaier S1, Porrini M2, Lucchini G2, Attilio Sacchi G2 and Abdelly C2
1Laboratoire des Plantes Extrêmophiles, Centre de Biotechnologie de Borj-Cédria, BP 901, 2050 Hammam-lif, Tunisia
2Department of Agricultural and Environmental Sciences, Università degli Studi di Milano, 20133 Milan, Italy
*Corresponding Author : Amari T
Laboratoire des Plantes Extrêmophiles
Centre de Biotechnologie de Borj-Cédria
BP 901, 2050 Hammam-lif, Tunisia
Tel: +21679325848
Fax: +21679325848
Received January 02, 2016; Accepted February 24, 2016; Published February 29, 2016
Citation: Amari T, Ghnaya T, Sghaier S, Porrini M, Lucchini G, et al. (2016) Evaluation of the Ni2+ Phytoextraction Potential in Mesembryanthemum crystallinum (Halophyte) and Brassica juncea. J Bioremed Biodeg 7:336. doi: 10.4172/2155-6199.1000336
Copyright: © 2016 Amari T, et al. This is an open-a ccess article distributed under the terms of the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original author and source are credited.


Among heavy metal stressors, nickel (Ni) pollution is one threatening risk to the environment. In this view, the growing concerns about environmental pollution have stimulated the efforts to promote the individuation of phytoextractor plants that are able to tolerate and accumulate toxic metals, including Ni, in the aerial parts. More recently, it has been suggested that halophytes, i.e. native salt-tolerant species, could be more suitable for metal extraction, from saline soils than glycophytes, most frequently used so far. In the framework of this approach, we evaluated here the Ni-phytoextraction ability of the halophyte Mesembryanthemum crystallinum comparatively to the model species Brassica juncea. Plants were maintained for 3 months on a soil containing 0, 25, 50, and 100 ppm NiCl2 . Nickel impaired the growth activity of both species. Interestingly, M. crystallinum was less impacted by NiCl2 addition. The plant mineral nutrition was differently affected by NiCl2 exposure depending on the ion, the species and even the organ. In both species, roots were the preferential sites of Ni2+ accumulation, but the fraction translocated to shoots was higher in M. crystallinum than in B. juncea. The relatively good tolerance of M. crystallinum to Ni suggests that this halophyte is more efficient to extract Ni2+ than B. juncea.


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