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@ARTICLE{Fares:56258,
author = {Fares, S. and Loreto, F. and Kleist, E. and Wildt, J.},
title = {{S}tomatal uptake and stomatal deposition of ozone in
isoprene and monoterpene emitting plants},
journal = {Plant biology},
volume = {10},
issn = {1435-8603},
address = {Oxford [u.a.] :Wiley- Blackwell},
publisher = {Wiley-Blackwell - STM},
reportid = {PreJuSER-56258},
pages = {44 - 54},
year = {2008},
note = {Record converted from VDB: 12.11.2012},
abstract = {Volatile isoprenoids were reported to protect plants
against ozone. To understand whether this could be the
result of a direct scavenging of ozone by these molecules,
the stomatal and non-stomatal uptake of ozone was estimated
in plants emitting isoprene or monoterpenes. Ozone uptake by
holm oak (Quercus ilex, a monoterpene emitter) and black
poplar (Populus nigra, an isoprene emitter) was studied in
whole plant enclosures (continuously stirred tank reactors,
CSTR). The ozone uptake by plants was estimated measuring
ozone concentration at the inlet and outlet of the reactors,
after correcting for the uptake of the enclosure materials.
Destruction of ozone at the cuticle or at the plant stems
was found to be negligible compared to the ozone uptake
through the stomata. For both plant species, a relationship
between stomatal conductance and ozone uptake was found. For
the poplar, the measured ozone losses were explained by the
uptake of ozone through the stomata only, and ozone
destruction by gas phase reactions with isoprene was
negligible. For the oak, gas phase reactions of ozone with
the monoterpenes emitted by the plants contributed
significantly to ozone destruction. This was confirmed by
two different experiments showing a) that in cases of high
stomatal conductance but under low CO(2) concentration, a
reduction of monoterpene emission was still associated with
reduced O(3) uptake; and b) that ozone losses due to the gas
phase reactions only can be measured when using the exhaust
from a plant chamber to determine the gas phase reactivity
in an empty reaction chamber. Monoterpenes can therefore
relevantly scavenge ozone at leaf level contributing to
protection against ozone.},
keywords = {Butadienes: metabolism / Hemiterpenes: metabolism /
Monoterpenes: metabolism / Ozone: metabolism / Pentanes:
metabolism / Plant Stomata: metabolism / Populus: metabolism
/ Quercus: metabolism / Butadienes (NLM Chemicals) /
Hemiterpenes (NLM Chemicals) / Monoterpenes (NLM Chemicals)
/ Pentanes (NLM Chemicals) / Ozone (NLM Chemicals) /
isoprene (NLM Chemicals) / J (WoSType)},
cin = {ICG-3},
ddc = {580},
cid = {I:(DE-Juel1)ICG-3-20090406},
pnm = {Terrestrische Umwelt},
pid = {G:(DE-Juel1)FUEK407},
shelfmark = {Plant Sciences},
typ = {PUB:(DE-HGF)16},
pubmed = {pmid:17538866},
UT = {WOS:000252496800005},
doi = {10.1055/s-2007-965257},
url = {https://juser.fz-juelich.de/record/56258},
}