The Arsenic Hyperaccumulator FernPteris vittataL.

Abstract

Arsenic (As) contaminated soils and waters are becoming major global environmental and human health risks. The identification of natural hyperaccumulators of As opens the door for phytoremediation of the arsenic contaminant. Pteris vittata is the first identified naturally evolving As hyperaccumulator. More than a decade after its discovery, we have made great progress in understanding the uptake, transport, and detoxification of As in the fern. The molecular mechanisms controlling As accumulation in P. vittata are now beginning to be recognized. In this review, we will try to summarize what we have learned about this As accumulator, with particular emphasis on the current knowledge of the physiological and molecular mechanisms of arsenic phytoremediation. We also discuss the potential strategies to further enhance phytoextraction abilities of P. vittata.

Effects of putrescine on oxidative stress induced by hydrogen peroxide in Salvinia natans L.

“…However, some non-angiospermic plants, particularly those of fern, are reported with their in-built tolerance to accommodate ROS (Mostafa & Tammam 2012;Satapathy et al 2012). Chinese brake fern is a citing example for hyperaccumulation of heavy metals and its tolerance to ROS has already been demonstrated (Xie et al 2009). Salvinia, a common free-floating aquatic fern species, is widely grown in contaminated area or water bodies abundant with industrial effluents, which contain different toxic materials including oxides and hydroxides of heavy metals (Prado et al 2010).…”

Interaction of polyamine on oxidative stress induced by exogenously applied hydrogen peroxide in Salvinia natans Linn

“…Non-angiosperm plants, like ferns, are less explored in this regard. Chinese brake fern (Pteris vittata) has been proved to be a hyper accumulator of heavy metals and shows a good tolerance against ROS under oxidative stress (Xie et al 2009). Salvinia natans is a small aquatic fern with branched creeping stems, bearing hairs but no true roots and are free-floating widely grown in contaminated area or water streams with profuse industrial effluents.…”

Interactions of arsenic and phenanthrene on their uptake and antioxidative response in Pteris vittata L.

“…Phytoremediation has been proposed as a promising technology and developed well in many arsenic contaminated sites (Baker et al, 1994;Chaney et al, 2000). Pteris vitatta L., the first known and the most important arsenic hyperaccumulator, was reported to be tolerant of high concentrations of arsenic (up to 1500 mg/kg soil) and efficiently accumulate arsenic (13,800 mg/kg dry biomass) (Ma et al, 2001;Rathinasabapathi et al, 2006;Xie et al, 2009). In recent years, the phytoremediation of arsenic and heavy metal cocontamination is becoming an appealing research and has been documented in scientific literature.…”