Identification of the bacterial superoxide dismutase (SodM) as plant-inducible elicitor of an oxidative burst reaction in tobacco cell suspension cultures

Watt SA, Tellstroem V, Patschkowski T, Niehaus K (2006)
In: Journal of Biotechnology. 126. Elsevier: 78-86.

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Abstract
Three of the most abundant proteins (OmpW, MopB and SodM) of the extracellular proteome of Xanthomonas campestris pv. campestris were analysed in a luminol-based oxidative burst assay to identify novel pathogen-associated molecular patterns (PAMP). Tobacco cell suspension cultures were used as a model system to monitor elicitor induced plant defence reaction. The candidate proteins were isolated from two-dimensional gels prior to application to the oxidative burst assay. The superoxide dismutase (SodM) was the only isolated protein that could elicit a notable hydrogen peroxide (H2O2) production in tobacco cell cultures indicating the initiation of plant defence. An alignment of the SodM sequences from X. campestris pv. campestris and Escherichia coli revealed 55.7% identity and 29% of the sequence were substitutions for amino acids with similar physicochemical properties. By using a commercially available purified E coli derived SodM preparation, it was possible to show that the amino acid sequence of this protein is responsible for the elicitation of an oxidative burst reaction in the tobacco cell culture model. This suggests that the bacterial superoxide dismutase is a novel pathogen-associated molecular pattern. The minimal elicitor active sequence, however, is still elusive. (c) 2006 Elsevier B.V. All rights reserved.
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Watt SA, Tellstroem V, Patschkowski T, Niehaus K. Identification of the bacterial superoxide dismutase (SodM) as plant-inducible elicitor of an oxidative burst reaction in tobacco cell suspension cultures. In: Journal of Biotechnology. Vol 126. Elsevier; 2006: 78-86.
Watt, S. A., Tellstroem, V., Patschkowski, T., & Niehaus, K. (2006). Identification of the bacterial superoxide dismutase (SodM) as plant-inducible elicitor of an oxidative burst reaction in tobacco cell suspension cultures. Journal of Biotechnology, 126(1), 78-86.
Watt, S. A., Tellstroem, V., Patschkowski, T., and Niehaus, K. (2006). “Identification of the bacterial superoxide dismutase (SodM) as plant-inducible elicitor of an oxidative burst reaction in tobacco cell suspension cultures” in Journal of Biotechnology, vol. 126, (Elsevier), 78-86.
Watt, S.A., et al., 2006. Identification of the bacterial superoxide dismutase (SodM) as plant-inducible elicitor of an oxidative burst reaction in tobacco cell suspension cultures. In Journal of Biotechnology. no.126 Elsevier, pp. 78-86.
S.A. Watt, et al., “Identification of the bacterial superoxide dismutase (SodM) as plant-inducible elicitor of an oxidative burst reaction in tobacco cell suspension cultures”, Journal of Biotechnology, vol. 126, Elsevier, 2006, pp.78-86.
Watt, S.A., Tellstroem, V., Patschkowski, T., Niehaus, K.: Identification of the bacterial superoxide dismutase (SodM) as plant-inducible elicitor of an oxidative burst reaction in tobacco cell suspension cultures. Journal of Biotechnology. 126, p. 78-86. Elsevier (2006).
Watt, Steven Alexander, Tellstroem, Verena, Patschkowski, Thomas, and Niehaus, Karsten. “Identification of the bacterial superoxide dismutase (SodM) as plant-inducible elicitor of an oxidative burst reaction in tobacco cell suspension cultures”. Journal of Biotechnology. Elsevier, 2006.Vol. 126. 78-86.
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