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Title of Journal: Plant Soil

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Abbravation: Plant and Soil

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Springer Netherlands

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DOI

10.1016/0094-114x(93)90059-5

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ISSN

1573-5036

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Oxidative stress is associated with aluminum toxic

Authors: Hideaki Matsumoto Hirotoshi Motoda
Publish Date: 2012/08/15
Volume: 363, Issue: 1-2, Pages: 399-410
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Abstract

Although many studies on the mechanism of Al toxicity and tolerance have been conducted independently events occurring during the recovery process from Al injury is limited This study was to investigate Al toxicity recovery mechanism focusing in morphological and physiological aspectThe accumulation of reactive oxygen species was remarkably high in the root under continued Al treatment but decreased in the recovering root The superoxide anion exuded in the presence of nicotinamide adenine dinucleotide phosphate NADPH showed a similar tendency with respect to the accumulation of reactive oxygen species A similar pattern of lignin content and superoxide dismutase activity was observed among the treatments while the increased peroxidation in the root under continued Al treatment did not decline with recovery treatment A longitudinal section of the root under continued Al treatment showed the accumulation of superoxide anion lignin and peroxide H2O2 at the epidermal and outer cortex region where the Al induced injuries including ruptures are detectedOxidative stress is associated with the mechanism of Al toxicity recovery The recovery process might include the elongation of the central cylinder as a consequence of the oxidative stressinduced formation of the zonal region ZR The results further suggest a plausible role for the ZR in the programmed cell deathlike function involved in Al toxicity recovery

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