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Rosemann, D. ; Heller, W.E. ; Sandermann, H.J.

Biochemical plant responses to ozone. II. Induction of stilbene biosynthesis in scots pine (Pinus sylvestris L.) seedlings.

Plant Physiol. 97, 1280-1286 (1991)
DOI
Open Access Green as soon as Postprint is submitted to ZB.
Formation of the stilbenes pinosylvin and pinosylvin 3-methyl ether, as well as the activity of the biosynthetic enzyme stilbene synthase (pinosylvin-forming), were induced several hundred- to thousandfold in primary needles of 6-week-old pine (Pinus sylvestris L.) seedlings upon exposure to a single pulse of ozone of at least 0.15 microliters per liter. The seedlings required 4 hours of exposure as a minimum for the induction of stilbene biosynthesis when exposed to 0.2 microliters per liter ozone. Both stilbene synthase activity and stilbene accumulation increased with the duration of ozone treatment. The activity of phenylalanine ammonia-lyase and the activity of chalcone synthase, a key enzyme of the flavonoid pathway that uses the same substrates as stilbene synthase, were also stimulated about twofold by ozone. Stilbene biosynthesis appears to represent the first example of a dose-dependent biochemical response to ozone in a conifer species and may serve as a useful biomarker to study stress impacts on pine trees.
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Publication type Article: Journal article
Document type Scientific Article
ISSN (print) / ISBN 0032-0889
e-ISSN 1532-2548
Journal Plant Physiology
Quellenangaben Volume: 97, Issue: 4, Pages: 1280-1286 Article Number: , Supplement: ,
Publisher American Society of Plant Biologists (ASPB)
Reviewing status Peer reviewed
Institute(s) Institute of Biochemical Plant Pathology (BIOP)