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Plant Biosystems - An International Journal Dealing with all Aspects of Plant Biology
Official Journal of the Societa Botanica Italiana
Volume 144, 2010 - Issue 4
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Original Articles

Arsenate reductase activity in roots from the arsenic hyperaccumulator Pteris vittata utilizes both glutathione and dithiothreitol as reductants

V. K. Nagarajan Department of Plant Biology, Southern Illinois University Carbondale, Carbondale, IL, USA
&
S. D. Ebbs Department of Plant Biology, Southern Illinois University Carbondale, Carbondale, IL, USACorrespondence[email protected]
Pages 857-859 | Received 31 Jul 2009, Accepted 17 Feb 2010, Published online: 21 Dec 2010
 
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Abstract

The role of glutathione and dithiothreitol as reductants supporting arsenate reductase activity in root extract from the arsenic hyperaccumulator Pteris vittata was examined. The two reductants in combination enhanced arsenate reduction in vitro more than glutathione alone. The implications of these results for in vivo arsenate reduction are discussed.

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