Constitutive versus heat and biotic stress induced BVOC emissions in Pseudotsuga menziesii
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Authors
Joo, E.
Dewulf, J.
Amelynck, C.
Schoon, N.
Pokorska, O.
Simpraga, M.
Steppe, K.
Aubinet, M.
Van Langenhove, H.
Discipline
Earth and related Environmental sciences
Subject
Fagus sylvatica L
Induced VOC
Methyl salicylate
Pseudotsuga menziesii
Sesquiterpene
Forestry
Isomers
Olefins
Thermal stress
Plant extracts
4,8 dimethyl 1,3,7 nonatriene
beta pinene
biogenic volatile organic compound
linalool
methylbutenol
pinene
salicylic acid methyl ester
sesquiterpene
terpene
unclassified drug
volatile organic compound
atmospheric pollution
biogenic emission
emission inventory
evergreen tree
gas chromatography
heating
light intensity
mass spectrometry
monoterpene
sapling
seasonality
terpene
volatile organic compound
article
atmospheric dispersion
biotic stress
Douglas fir
heat stress
isomer
light intensity
mass fragmentography
nonhuman
priority journal
sapling
seasonal variation
temperature dependence
Emission
Fagus Sylvatica
Forestry
Isomers
Olefins
Pseudotsuga Menziesii
Stresses
Thermal Stress
Voc
Fagus sylvatica
Pseudotsuga menziesii
Audience
Scientific
Date
2011Metadata
Show full item recordDescription
Induced volatiles have been a focus of recent research, as not much is known of their emission behavior or atmospheric contribution. BVOC emissions were measured from Pseudotsuga menziesii saplings under natural environmental conditions, using a dynamic branch enclosure system and GC–MS for their analysis. We determined temperature and light dependency of the individual compounds, studied seasonality of the emissions and discuss the effect of heat stress in comparison with two specific biotic stresses that occurred naturally on the trees. A standardized emission rate of 6.8 μg g(dw)−1 h−1 for monoterpenes under stressed conditions was almost a magnitude higher than that obtained for healthy trees (0.8 ± 0.2 μg g(dw)−1 h−1), with higher beta factors characterizing the stressed trees. The response of the emissions to light intensity was different for the individual compounds, suggesting a distinct minimum light intensity to reach saturation. Heat stress changed the relative contribution of specific volatiles, with larger extent of increase of sesquiterpenes, methyl salicylate and linalool emissions compared to monoterpenes. Biotic stress kept low the emissions of sesquiterpenes, (E)-4,8-dimethyl-1,3,7-nonatriene and methylbutenol isomers, and increased the level of methyl salicylate and monoterpenes. The ratio of β-pinene/α-pinene was also found to be significantly enhanced from 1.3 to 2.4 and 3.2 for non-stressed, heat stressed and combined biotic and heat stressed, respectively.
Citation
Joo, E.; Dewulf, J.; Amelynck, C.; Schoon, N.; Pokorska, O.; Simpraga, M.; Steppe, K.; Aubinet, M.; Van Langenhove, H. (2011). Constitutive versus heat and biotic stress induced BVOC emissions in Pseudotsuga menziesii. , Atmospheric Environment, Vol. 45, Issue 22, 3655-3662, DOI: 10.1016/j.atmosenv.2011.04.048.Identifiers
scopus: 2-s2.0-79958032350
Type
Article
Peer-Review
Yes
Language
eng