Journal Article

In vivo Detection of Tobacco Mosaic Virus-Induced Local and Systemic Oxidative Burst by Electron Paramagnetic Resonance Spectroscopy

József Fodor, Éva Hideg, Adrianna Kecskés and Zoltán Király

in Plant and Cell Physiology

Published on behalf of Japanese Society of Plant Physiologists

Volume 42, issue 7, pages 775-779
Published in print July 2001 | ISSN: 0032-0781
Published online July 2001 | e-ISSN: 1471-9053 | DOI: http://dx.doi.org/10.1093/pcp/pce096
In vivo Detection of Tobacco Mosaic Virus-Induced Local and Systemic Oxidative Burst by Electron Paramagnetic Resonance Spectroscopy

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This is the first demonstration that tobacco mosaic virus-induced oxidative stress in a necrotic host plant is signalled by an elevated level of monodehydroascorbate (MDA) radicals detected by electron paramagnetic resonance spectroscopy. Furthermore, systemic acquired resistance induced in remote leaves of Xanthi-nc tobacco is also associated with stimulated MDA signals indicative of a microoxidative burst.

Keywords: Key words: EPR spectroscopy — Monodehydroascorbate radical — Reactive oxygen species — Systemic acquired resistance — Tobacco (Nicotiana tabacum).; Abbreviations: DHA, dehydroascorbate; EPR, electron paramagnetic resonance; MDA, monodehydroascorbate; ROS, reactive oxygen species; SA, salicylic acid; SAR, systemic acquired resistance; TMV, tobacco mosaic virus.

Journal Article.  3073 words.  Illustrated.

Subjects: Biochemistry ; Molecular and Cell Biology ; Plant Sciences and Forestry

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