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. 2009 Sep;4(9):878-9.
doi: 10.4161/psb.4.9.9428. Epub 2009 Sep 3.

Ozone and nitric oxide interaction in Arabidopsis thaliana: a role for ethylene?

Reetta Ahlfors  1 , Mikael Brosché, Jaakko Kangasjärvi
Affiliations

Ozone and nitric oxide interaction in Arabidopsis thaliana: a role for ethylene?

Reetta Ahlfors et al. Plant Signal Behav. 2009 Sep.

Abstract

Nitric oxide (NO) is involved together with reactive oxygen species (ROS) in the activation of various stress responses in plants. However, the biochemical mechanisms by which ROS and NO participate, and the potential interaction between these molecules are still unclear. Ozone (O(3)) can be used as a tool to elicit ROS-activated stress responses and to activate cell death in plant leaves. We have recently shown that O(3) induced a rapid accumulation of NO in Arabidopsis leaves and at late time points NO production coincided with the formation of hypersensitive response like lesions. Experiments using O(3) and the NO-donor SNP alone or in combination indicated that both molecules are capable of activating a large set of stress related genes. In combined treatment, NO attenuated O(3)-induction of salicylic acid (SA) biosynthetic and signaling genes, and reduced SA accumulation. In addition, NO can elevate the levels of ethylene in several mutants. Thus, NO is a modifier of ROS signaling.

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Figures

Figure 1
Figure 1
NO activates ethylene biosynthesis. 0.5 mM SnP treatment of Col-0, rcd1 and Atnoa1 lead to increase in ethylene formation.
See this image and copyright information in PMC

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References

    1. Ahlfors R, Brosché M, Kollist H, Kangasjärvi J. Nitric oxide modulates ozone-induced cell death, hormone biosynthesis and gene expression in Arabidopsis thaliana. Plant J. 2009;58:1–12. - PubMed
    1. Kangasjärvi J, Jaspers P, Kollist H. Signalling and cell death in ozone-exposed plants. Plant Cell Environ. 2005;28:1021–1036.
    1. Lamb C, Dixon RA. The oxidative burst in plant disease resistance. Annu Rev Plant Physiol Plant Mol Biol. 1997;48:251–275. - PubMed
    1. Overmyer K, Brosché M, Kangasjärvi J. Reactive oxygen species and hormonal control of cell death. Trends Plant Sci. 2003;8:335–342. - PubMed
    1. Overmyer K, Brosché M, Pellinen R, Kuittinen T, Tuominen H, Ahlfors R, et al. Ozone-induced programmed cell death in the Arabidopsis radical-induced cell death1 mutant. Plant Physiol. 2005;137:1092–1104. - PMC - PubMed

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