This study focuses on the fern Pteris vittata (Pteridaceae), which is extraordinary in its ability to tolerate and hyperaccumulate very high levels of arsenic that would kill any other plant or animal outside the Pteridaceae. Pteris vittata grew well and took up large amounts of arsenic in six arsenic-contaminated soils with different properties and different sources of arsenic contamination. Pteris vittata exhibits enhanced arsenic uptake, but the corresponding mechanisms are not well known. Banks and Chao Cai, a former graduate student in Banks’ lab, identified three genes that are highly active when the fern comes into contact with arsenic. Arsenic uptake by lettuce from As-contaminated soil remediated with Pteris vittata and organic amendment Chemosphere . “Other researchers have shown that this fern, when grown on arsenic-contaminated soils, can remove almost 50 percent of the arsenic in five years,” Banks said. A set of newly identified genes helps explain how. The GAPC1 protein in other plants uses phosphate to help break down glucose for energy, and arsenate interferes with its normal function. Mechanisms underlying this capability and the associated hypertolerance have been described even if … This study was carried out to identify Pteris vittata plant in India, which is reported elsewhere as an arsenic hyperaccumulator. It is unique because it can hyper-accumulate and tolerate very high levels of arsenic that it takes up from the soil, sequestering the toxic element in its fronds. Once taken up by the root, arsenate is reduced to arsenite as it is transported to the lamina of the frond, where it is stored in cells as free arsenite. Pteris vittata is a hyperaccumulator of arsenic. Plant Cell 22, 2045–2205. Here, for the first time, we cloned a new PvPht1;4 gene from P. vittata and investigated its role in arsenate (AsV) uptake and transport in yeast and transgenic tobacco plants. A vacuolar arsenite transporter necessary for arsenic tolerance in the arsenic hyperaccumulating fern Pteris vittata is missing in flowering plants. Arsenite (AsIII) antiporter ACR3 protein is critical for As metabolism in organisms, but it is lost in flowering plants. Journal of Hazardous Materials 2017 , 321 , 146-153. The fern Pteris vittata tolerates and hyperaccumulates exceptionally high levels of the toxic metalloid arsenic, and this trait appears unique to the Pteridaceae. [7], A remnant population exists in the Italian peninsula, in Sicily, Calabria and Campania. This study focuses on the fern Pteris vittata (Pteridaceae), which is extraordinary in its ability to tolerate and hyperaccumulate very high levels of arsenic that would kill any other plant or animal outside the Pteridaceae. Once taken up by the root, arsenate is reduced to arsenite as it is transported to the lamina of the frond, where it is stored in cells as free arsenite. Goals / Objectives Chinese brake fern (Pteris vittata), an arsenic hyperaccumulator is investigated for its use in phytoremediation of arsenic from the environment. Les Robinson - Field Guide to the Native Plants of Sydney. As many as two million Americans who use private wells are drinking water highly contaminated with arsenic… The Pteris vittata fern can hyperaccumulate and tolerate high levels of arsenic, making it an effective way to remediate contaminated soil and water. Goals / Objectives Chinese brake fern (Pteris vittata), an arsenic hyperaccumulator is investigated for its use in phytoremediation of arsenic from the environment. The mechanisms of arsenic (As) hyperaccumulation in Pteris vittata, the first identified As hyperaccumulator, are unknown. In a 58‐week arsenic phytoextraction field study, we determined the effects of soil arsenic concentrations, fertilizer application, and mycorrhizal fungi inoculation on P. vittata arsenic It has been praised for its potential to remediate soils contaminated with arsenic.

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