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Impact of Heat Stress on the Emissions of Monoterpenes, Sesquiterpenes, Phenolic Bvoc and Green Leaf Volatiles from Several Tree Species : Volume 9, Issue 7 (27/07/2012)

By Kleist, E.

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Book Id: WPLBN0003975766
Format Type: PDF Article :
File Size: Pages 38
Reproduction Date: 2015

Title: Impact of Heat Stress on the Emissions of Monoterpenes, Sesquiterpenes, Phenolic Bvoc and Green Leaf Volatiles from Several Tree Species : Volume 9, Issue 7 (27/07/2012)  
Author: Kleist, E.
Volume: Vol. 9, Issue 7
Language: English
Subject: Science, Biogeosciences, Discussions
Collections: Periodicals: Journal and Magazine Collection (Contemporary), Copernicus GmbH
Historic
Publication Date:
2012
Publisher: Copernicus Gmbh, Göttingen, Germany
Member Page: Copernicus Publications

Citation

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Bohne, A., Andres, S., Mentel, T. F., Wildt, J., Tillmann, R., Kleist, E.,...Kiendler-Scharr, A. (2012). Impact of Heat Stress on the Emissions of Monoterpenes, Sesquiterpenes, Phenolic Bvoc and Green Leaf Volatiles from Several Tree Species : Volume 9, Issue 7 (27/07/2012). Retrieved from http://www.ebooklibrary.org/


Description
Description: Institut für Bio- und Geowissenschaften, IBG-2, Forschungszentrum Jülich, 52425 Jülich, Germany. Changes in the biogenic volatile organic compound (BVOC) emissions from European beech, Palestine oak, Scots pine, and Norway spruce exposed to heat stress were measured in a laboratory setup. In general, heat stress decreased the de novo emissions of monoterpenes, sesquiterpenes and phenolic BVOC. Decreasing emission strength with heat stress was independent of the tree species and whether the de novo emissions being constitutive or induced by biotic stress.

In contrast, heat stress induced emissions of green leaf volatiles. It also amplified the release of monoterpenes stored in resin ducts of conifers probably due to heat-induced damage of these resin ducts. The increased release of monoterpenes could be strong and long lasting. But, despite of such strong monoterpene emission pulses, the net effect of heat stress on BVOC emissions from conifers can be an overall decrease. In particular during insect attack on conifers the plants showed de novo emissions of sesquiterpenes and phenolic BVOC which exceeded constitutive monoterpene emissions from pools. The heat stress induced decrease of these de novo emissions was larger than the increased release caused by damage of resin ducts.

We project that global change induced heat waves may cause increased BVOC emissions only in cases where the respective areas are predominantly covered with conifers that do not emit high amounts of sesquiterpenes and phenolic BVOC. Otherwise the overall effect of heat stress will be a decrease in BVOC emissions.


Summary
Impact of heat stress on the emissions of monoterpenes, sesquiterpenes, phenolic BVOC and green leaf volatiles from several tree species

Excerpt
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