Arsenic accumulation in Scutellaria baicalensis Georgi and its effects on plant growth and pharmaceutical components

Screening Indian Mustard Genotypes for Phytoremediating Arsenic‐Contaminated Soils

“…The length and biomass of root and shoot were chosen as indices of growth performance in this study. As has been shown to inhibit the lengths of root and shoot in plants [2,28]. The reduction in growth may be due to negative effects of As on cell metabolism, such as energy being channeled into the production of stress-related substances like antioxidases [2,35] and phytochelatins [36,37].Growth inhibition at higher concentrations may be linked with lower mitotic activity in the root meristematic zone or the inhibition of cell enlargement in the elongation zone as a consequence of decreased cellular turgor [30,38].…”

“…As has been shown to inhibit the lengths of root and shoot in plants [2,28]. The reduction in growth may be due to negative effects of As on cell metabolism, such as energy being channeled into the production of stress-related substances like antioxidases [2,35] and phytochelatins [36,37].Growth inhibition at higher concentrations may be linked with lower mitotic activity in the root meristematic zone or the inhibition of cell enlargement in the elongation zone as a consequence of decreased cellular turgor [30,38]. Root lengthening is controlled by the cell division rate in the apical meristems and by expansion and elongation of the newly formed cells and is considered to be one of the most sensitive endpoints of plant toxicity, where a dose-dependent inhibition of root growth (and of the whole plant), following the administration of relatively high doses of As, has been reported for wheat [26], mung bean [39], Arabidopsis thaliana [40], broad bean [41], and rice [29,42].…”

“…As has been reported to inhibit biomass production in various plant species [2,43]. It has been argued that the decline in the biomass production in plants might be due to increased tissue permeability and tissue loss [44].…”

“…As contamination in groundwater and soil is a worldwide problem, resulting from natural geologic and anthropogenic sources such as mining, heavy industry, semiconductor manufacturing, forest products, landfill leachates, fertilizers, pesticides, and sewage [1,2]. As is a trace nonmetal that can pose significant risk to humans and the environment, where it accumulates in high concentrations [3].…”

Effects of Sulfate Application on Inhibiting Accumulation and Alleviating Toxicity of Arsenic in Panax notoginseng Grown in Arsenic-Polluted Soil

“…Moreover, As contamination is a serious problem that threatens the health of human beings worldwide (Zhao et al 2009). Specifically, As may adversely impact the respiratory, cardiovascular, and neurological systems and may even lead to cancer (Cao et al 2009), and millions of people in southeast Asia are estimated to suffer from arsenic contamination (Nordstrom 2002). The US Environmental Protection Agency has set the permission limit of As in soil as 24 mg/kg.…”