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Langebartels, C. ; Wohlgemuth, H. ; Kschieschan, S. ; Grün, S. ; Heller, W.

Oxidative burst and cell death in ozone-exposed plants.

Plant Physiol. Biochem. 4, 567-575 (2002)
Open Access Green möglich sobald Postprint bei der ZB eingereicht worden ist.
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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Publikationstyp Artikel: Journalartikel
Dokumenttyp Wissenschaftlicher Artikel
Korrespondenzautor
Schlagwörter Amine oxidase; Apoplast; NADPH oxidase; Oxalate oxidase; Peroxidase; Programmed cells death; Reactive oxygen species
ISSN (print) / ISBN 0981-9428
e-ISSN 1873-2690
Zeitschrift Plant Physiology and Biochemistry
Quellenangaben Band: 4, Heft: , Seiten: 567-575 Artikelnummer: , Supplement: ,
Verlag Elsevier
Nichtpatentliteratur Publikationen
Begutachtungsstatus Peer reviewed
Institut(e) Institute of Biochemical Plant Pathology (BIOP)