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Int. J. Mol. Sci. 2011, 12(10), 6894-6918; doi:10.3390/ijms12106894

Metal-Induced Oxidative Stress and Plant Mitochondria

Centre for Environmental Sciences, Hasselt University, Agoralaan Building D, B-3590 Diepenbeek, Belgium
Author to whom correspondence should be addressed.
Received: 26 July 2011 / Revised: 26 September 2011 / Accepted: 5 October 2011 / Published: 18 October 2011
(This article belongs to the Special Issue Oxidative Stress and Mitochondria)
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A general status of oxidative stress in plants caused by exposure to elevated metal concentrations in the environment coincides with a constraint on mitochondrial electron transport, which enhances ROS accumulation at the mitochondrial level. As mitochondria are suggested to be involved in redox signaling under environmental stress conditions, mitochondrial ROS can initiate a signaling cascade mediating the overall stress response, i.e., damage versus adaptation. This review highlights our current understanding of metal-induced responses in plants, with focus on the production and detoxification of mitochondrial ROS. In addition, the potential involvement of retrograde signaling in these processes will be discussed.
Keywords: toxic metals; oxidative stress; reactive oxygen species (ROS); plant mitochondria; oxidative damage; signaling toxic metals; oxidative stress; reactive oxygen species (ROS); plant mitochondria; oxidative damage; signaling
This is an open access article distributed under the Creative Commons Attribution License (CC BY 3.0).

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MDPI and ACS Style

Keunen, E.; Remans, T.; Bohler, S.; Vangronsveld, J.; Cuypers, A. Metal-Induced Oxidative Stress and Plant Mitochondria. Int. J. Mol. Sci. 2011, 12, 6894-6918.

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