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Messner, P. ; Schröder, P.

Burst amplifying system in cell suspension cultures of spruce (Picea abies L-Karst.): Modulation of elicitor-induced release of hydrogen peroxide (oxidative burst) by ionophores and salicylic acid.

J. Appl. Bot. 73, 6-10 (1999)
Open Access Gold as soon as Publ. Version/Full Text is submitted to ZB.
The study of the hypersensitive reaction and the functions of H2O2 and salicylic acid (SA) as messenger molecules in tobacco and few other plant species (arabidopsis, soybean) has only yielded insufficient explanation regarding the termination of the programmed cell death and the modulation of the hypersensitive response (HR). The present paper focuses on the interaction between oxidative burst, salicylic acid and the role of calcium as secondary messenger in a spruce cell culture. Evidence is presented that H2O2, and SA-accumulation influence each other and that exceeding concentrations of SA act as signals for the termination of the programmed cell death. From experimental results, a transistor-resistance concept is developed in analogy to an electronic amplifyer which explains the effects observed during HR reactions.
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Publication type Article: Journal article
Document type Scientific Article
Keywords PLANT-DISEASE RESISTANCE; GLUTATHIONE-S-TRANSFERASE; DEFENSE GENE ACTIVATION; SIGNAL-TRANSDUCTION; ACQUIRED-RESISTANCE; TRANSIENT RELEASE; ACTIVE OXYGEN; K+ EFFLUX; TOBACCO; PARSLEY
ISSN (print) / ISBN 0949-5460
e-ISSN 1439-040X
Journal Journal of Applied Botany
Quellenangaben Volume: 73, Issue: 1-2, Pages: 6-10 Article Number: , Supplement: ,
Publisher Blackwell
Publishing Place Berlin; Wien
Reviewing status Peer reviewed
Institute(s) Institute of Biochemical Plant Pathology (BIOP)
Research Unit Microbe-Plant Interactions (AMP)