The Journal of Toxicological Sciences
Online ISSN : 1880-3989
Print ISSN : 0388-1350
ISSN-L : 0388-1350
Letter
Engineering expression of polyphosphate confers cadmium resistance in tobacco
Takeshi NagataTomoki KimuraHidemitsu Pan-Hou
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2008 Volume 33 Issue 3 Pages 371-373

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Abstract

The feasibility of transgenic tobacco, genetically engineered to express bacterial polyphosphate (polyP) for phytoremediation of cadmium pollution was examined. The transgenic tobacco showed more resistance to Cd2+ and accumulated more Cd2+ than its wild-type progenitors. These results suggest that polyP has abilities to reduce Cd2+ toxicity, probably via a chelation mechanism, and to accumulate cadmium in the transgenic tobacco. Based on the results obtained in this study, polyP-mediated Cd2+ accumulation may serve as a useful strategy for Cd2+ phytoremediation.

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© 2008 The Japanese Society of Toxicology
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