Effects of Cd2+ on K+, Ca2+ and N uptake in two halophytes Sesuvium portulacastrum and Mesembryanthemum crystallinum: Consequences on growth

Cadmium accumulation in Atriplex halimus subsp. schweinfurthii and its influence on growth, proline, root hydraulic conductivity and nutrient uptake

“…Another cause of the restriction to Ca translocation to shoots might be the sequestration of this ion as oxalate crystals in the xylem vessels of Cdtreated plants (Barcelo´et al, 1988). Indeed, Suzuki (2005) and Ghnaya et al (2007) found that elevated Ca concentration in the culture medium can greatly alleviate the toxicity of Cd in Arabidopsis, Sesuvium portulacastrum and Mesembryanthemum crystallinum, which is consistent with the competition theory between the two cations during influx.…”

Screening of tomato (Lycopersicon esculentum) cultivars against cadmium through shotgun approach

“…The extent of changes in growth attributes revealed the existence of great varietal differences for Cd tolerance. The effects of Cd damage to all the varieties were largely similar to the deficiency of essential nutrients including K, Mg, Mn and Fe (Epstein and Bloom 2005;Ghnaya et al 2007). This is plausible in view of the fact that all these elements are either structurally or functionally involved in chlorophyll biosynthesis and its activity.…”

Phytoextraction of Pb and Cd by the Mediterranean saltbush (Atriplex halimus L.): metal uptake in relation to salinity

“…Within the field of phytoextraction, halophytes like A. halimus L. have been suggested to be better adapted to coping with environmental stresses, including heavy metals, compared to salt-sensitive crop plants commonly chosen for phytoextraction studies; thus, halophytes are promising candidates for the removal of heavy metals not only from heavy metal polluted soils but also from heavy metal contaminated sites affected by salinity since saline depressions often constitute accumulation sites of industrial effluents contaminated by heavy metals, including Pb and Cd (Ghnaya et al 2005(Ghnaya et al , 2007. Furthermore, the use of saltaccumulating halophytes can be viewed as an alternative phytoremediation method of soil desalination where salt is removed from the soil to the point that the soil can be returned to agricultural productivity.…”

“…Furthermore, halophyte species are of special interest since these plants are naturally present in environments characterized by an excess of toxic ions, mainly sodium and chloride, and can also tolerate other stresses such as chilling, freezing, heat, and drought while it has been speculated that salt-tolerant plants may also be heavy metal tolerant and, further, may be able to accumulate metals (Thomas et al 1998;Jordan et al 2002;Lutts et al 2004). Therefore, halophytes have been suggested to be better adapted to coping with environmental stresses, including heavy metals than salt-sensitive crop plants commonly chosen for phytoextraction studies (Ghnaya et al 2005(Ghnaya et al , 2007. Thus, halophytes are expected to receive more attention of phytoremediation researchers in the near future.…”