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首页> 外文期刊>Current Science: A Fortnightly Journal of Research >Arsenic and chromium hyperaccumulation by an ecotype of Pteris vittata - prospective for phytoextraction from contaminated water and soil
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Arsenic and chromium hyperaccumulation by an ecotype of Pteris vittata - prospective for phytoextraction from contaminated water and soil

机译：生态型凤尾蕨（Pteris vittata）的砷和铬富集-从受污染的水和土壤中提取植物的前景

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摘要

This study was carried out to identify Pteris vittata plant in India, which is reported elsewhere as an arsenic hyperaccumulator. This is the first report of characterization of arsenic (As) accumulation in an Indian ecotype, which also shows chromium (Cr) hyperaccumulation in addition to As. Intact plantlets were grown in 20% Hoagland solution amended with up to 200 mg As or Cr l(-1) medium. Plants absorbed and accumulated a significant amount of As and Cr in their biomass with high bioenrichment factor. As and Cr tolerance by spores and gametophytes under in vitro was also assessed. As and Cr accumulation in the gametophyte biomass was more when spores were directly germinated on As- and Cr-supplemented media. As and Cr accumulation in the gametophyte biomass was less when spores were germinated first on media devoid of As and Cr but subsequently grown on As-and Cr-amended media.
机译：进行这项研究的目的是确定印度的凤尾蕨植物，该植物在其他地方被报道为砷超积累物。这是首次描述印度生态型中砷（As）积累的特征的报告，该报告还显示了除As之外铬（Cr）的过度积累。完整的小植株生长在20％的Hoagland溶液中，用最多200 mg As或Cr l（-1）培养基改良。植物在生物量中以高生物富集因子吸收并积累了大量的As和Cr。还评估了体外孢子和配子体对As和Cr的耐受性。当孢子直接在补充了As和Cr的培养基上发芽时，配子体生物量中的As和Cr积累更多。当孢子首先在不含As和Cr的培养基上萌发但随后在经As和Cr修饰的培养基上生长时，配子体生物量中As和Cr的积累较少。

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