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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; in revised form: 26 September 2011 / Accepted: 5 October 2011 / Published: 18 October 2011
Abstract: 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
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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.
Keunen E, Remans T, Bohler S, Vangronsveld J, Cuypers A. Metal-Induced Oxidative Stress and Plant Mitochondria. International Journal of Molecular Sciences. 2011; 12(10):6894-6918.
Keunen, Els; Remans, Tony; Bohler, Sacha; Vangronsveld, Jaco; Cuypers, Ann. 2011. "Metal-Induced Oxidative Stress and Plant Mitochondria." Int. J. Mol. Sci. 12, no. 10: 6894-6918.