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Arsenic and new rice
Date:6/9/2008

her investigations showed that only a subgroup of NIPs had arsenite transport capabilities, and have now been identified as metalloid channels in plants.

More surprisingly, the researchers also found that when they added arsenate some yeast, cells actually grew better and arsenite was released out of the cells. "It appears that some NIPs don't just transport arsenite in one direction", says Bienert. "They are bidirectional and, given the right conditions, can clear cells of toxic arsenite as well as accumulate it. This striking exit of the accumulated arsenite in cells could have an important role to play in the detoxification of plants, especially coupled with possibility of engineering a transporter that discriminates against arsenite uptake in the first place."


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