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Open Access Green as soon as Postprint is submitted to ZB.
Oxidative burst and cell death in ozone-exposed plants.
Plant Physiol. Biochem. 4, 567-575 (2002)
The phytotoxic air pollutant ozone spontaneously generates reactive oxygen species (ROS) in the leaf apoplast, provokes hypersensitive response-like lesions and induces defence reactions that significantly overlap with pathogen and other oxidative stress responses. Consequently, ozone has been used as a tool to unravel in planta ROS-induced plant defence and cell death mechanisms. Ozone exposure stimulates an oxidative burst in leaves of sensitive plants, resulting in the generation and accumulation of hydrogen peroxide or superoxide anions in distinct species. Accumulation of these ROS precedes the induction of cell death, and both responses co-occur spatially in the periveinal regions of the leaves. The review summarizes some of the recent results that have been obtained concerning the molecular basis of apoplastic ROS production in monocot and dicot species. Signal molecules, in particular ethylene and salicylic acid, control and potentiate the oxidative burst and subsequent cell death in its initiation and propagation phases while jasmonate leads to lesion containment. Amplification mechanisms that result in the production of excess ROS and hypersensitive cell death are discussed as major factors in ozone sensitivity of plant species and cultivars.
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Publication type
Article: Journal article
Document type
Scientific Article
Keywords
Amine oxidase; Apoplast; NADPH oxidase; Oxalate oxidase; Peroxidase; Programmed cells death; Reactive oxygen species
ISSN (print) / ISBN
0981-9428
e-ISSN
1873-2690
Quellenangaben
Volume: 4,
Pages: 567-575
Publisher
Elsevier
Non-patent literature
Publications
Reviewing status
Peer reviewed
Institute(s)
Institute of Biochemical Plant Pathology (BIOP)