A Novel Arsenate Reductase from the Arsenic Hyperaccumulating Fern Pteris vittata
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چکیده
منابع مشابه
A novel arsenate reductase from the arsenic hyperaccumulating fern Pteris vittata.
Pteris vittata sporophytes hyperaccumulate arsenic to 1% to 2% of their dry weight. Like the sporophyte, the gametophyte was found to reduce arsenate [As(V)] to arsenite [As(III)] and store arsenic as free As(III). Here, we report the isolation of an arsenate reductase gene (PvACR2) from gametophytes that can suppress the arsenate sensitivity and arsenic hyperaccumulation phenotypes of yeast (S...
متن کاملThe arsenic hyperaccumulating Pteris vittata expresses two arsenate reductases
Enzymatic reduction of arsenate to arsenite is the first known step in arsenate metabolism in all organisms. Although the presence of one mRNA arsenate reductase (PvACR2) has been characterized in gametophytes of P. vittata, no arsenate reductase protein has been directly observed in this arsenic hyperaccumulating fern, yet. In order to assess the possible presence of arsenate reductase in P. v...
متن کاملArsenic-resistant proteobacterium from the phyllosphere of arsenic-hyperaccumulating fern (Pteris vittata L.) reduces arsenate to arsenite.
An arsenic-resistant bacterium, AsRB1, was isolated from the fronds of Pteris vittata grown in a site contaminated with copper chromium arsenate. The bacterium exhibited resistance to arsenate, arsenite, and antimony in the culture medium. AsRB1, like Pseudomonas putida, grew on MacConkey and xylose-lactose-desoxycholate agars and utilized citrate but, unlike P. putida, was positive for indole ...
متن کاملDigital dissection of arsenate reductase enzyme from an arsenic hyperccumulating fern Pteris vittata
NOTE: This is version 1 of the preprint and may contain grammatical and proof reading mistakes. Errors and omissions excepted.. CC-BY-NC 4.0 International license peer-reviewed) is the author/funder. It is made available under a The copyright holder for this preprint (which was not. Abstract Action of arsenate reductase is crucial for the survival of an organism in arsenic polluted area. Pteris...
متن کاملPhytoremediation of arsenic-contaminated groundwater by the arsenic hyperaccumulating fern Pteris vittata L.
Arsenic concentrations in a much larger fraction of U.S. groundwater sources will exceed the maximum contaminant limit when the new 10 microg L(-1) EPA standard for drinking water takes effect in 2006. Thus, it is important to develop remediation technologies that can meet this new standard. Phytoremediation of arsenic-contaminated groundwater is a relatively new idea. In this research, an arse...
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ژورنال
عنوان ژورنال: Plant Physiology
سال: 2006
ISSN: 1532-2548,0032-0889
DOI: 10.1104/pp.106.084079