Temperature and light dependence of β-caryophyllene emission rates
Identifieur interne : 000699 ( PascalFrancis/Checkpoint ); précédent : 000698; suivant : 000700Temperature and light dependence of β-caryophyllene emission rates
Auteurs : Ute Hansen [Italie] ; Günther Seufert [Italie]Source :
- Journal of geophysical research [ 0148-0227 ] ; 2003.
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- Pascal (Inist)
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- geographic : Espagne.
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Abstract
[1] Assessments of the overall release of reactive volatile organic compounds from vegetation require the knowledge of the effect of temperature and light intensity on emission rates. The aim of the study presented here was to investigate whether the rates of emission of the highly reactive sesquiterpene β-Caryophyllene (BCAR) from foliage of orange trees (Citrus sinensis (L.) OSBECK, var. Navel and Navel Late), detected using branch enclosures in an orange orchard in Spain, were not only temperature but also light dependent. We used two algorithms to calculate the diurnal variation of BCAR emission rates from environmental data. One algorithm accounted exclusively for the known exponential relationship between emission rate and temperature, and the other for both temperature and light effects. Assuming a light and temperature dependence of BCAR emission rates led to a more precise prediction of the short-term variation of BCAR emission rates than assuming that emissions are affected exclusively by temperature. The light dependence of BCAR emission rates could be due to a modulation of BCAR synthesis by light, or to an enhanced volatilization of BCAR from storage pools under high light exposure, or a combination of both. The data show that present assessments of the total release of reactive volatile organic compounds from vegetation, disregarding light effects on BCAR emission, are highly uncertain, if BCAR considerably contributes to total terpenoid emissions of the investigated plants.
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<record><TEI><teiHeader><fileDesc><titleStmt><title xml:lang="en" level="a">Temperature and light dependence of β-caryophyllene emission rates</title><author><name sortKey="Hansen, Ute" sort="Hansen, Ute" uniqKey="Hansen U" first="Ute" last="Hansen">Ute Hansen</name><affiliation wicri:level="1"><inist:fA14 i1="01"><s1>European Commission, Joint Research Centre, Environment Institute</s1><s2>Ispra</s2><s3>ITA</s3><sZ>1 aut.</sZ><sZ>2 aut.</sZ></inist:fA14><country>Italie</country><wicri:noRegion>Ispra</wicri:noRegion></affiliation></author><author><name sortKey="Seufert, Gunther" sort="Seufert, Gunther" uniqKey="Seufert G" first="Günther" last="Seufert">Günther Seufert</name><affiliation wicri:level="1"><inist:fA14 i1="01"><s1>European Commission, Joint Research Centre, Environment Institute</s1><s2>Ispra</s2><s3>ITA</s3><sZ>1 aut.</sZ><sZ>2 aut.</sZ></inist:fA14><country>Italie</country><wicri:noRegion>Ispra</wicri:noRegion></affiliation></author></titleStmt><publicationStmt><idno type="wicri:source">INIST</idno><idno type="inist">04-0206577</idno><date when="2003">2003</date><idno type="stanalyst">PASCAL 04-0206577 INIST</idno><idno type="RBID">Pascal:04-0206577</idno><idno type="wicri:Area/PascalFrancis/Corpus">000701</idno><idno type="wicri:Area/PascalFrancis/Curation">000303</idno><idno type="wicri:Area/PascalFrancis/Checkpoint">000699</idno></publicationStmt><sourceDesc><biblStruct><analytic><title xml:lang="en" level="a">Temperature and light dependence of β-caryophyllene emission rates</title><author><name sortKey="Hansen, Ute" sort="Hansen, Ute" uniqKey="Hansen U" first="Ute" last="Hansen">Ute Hansen</name><affiliation wicri:level="1"><inist:fA14 i1="01"><s1>European Commission, Joint Research Centre, Environment Institute</s1><s2>Ispra</s2><s3>ITA</s3><sZ>1 aut.</sZ><sZ>2 aut.</sZ></inist:fA14><country>Italie</country><wicri:noRegion>Ispra</wicri:noRegion></affiliation></author><author><name sortKey="Seufert, Gunther" sort="Seufert, Gunther" uniqKey="Seufert G" first="Günther" last="Seufert">Günther Seufert</name><affiliation wicri:level="1"><inist:fA14 i1="01"><s1>European Commission, Joint Research Centre, Environment Institute</s1><s2>Ispra</s2><s3>ITA</s3><sZ>1 aut.</sZ><sZ>2 aut.</sZ></inist:fA14><country>Italie</country><wicri:noRegion>Ispra</wicri:noRegion></affiliation></author></analytic><series><title level="j" type="main">Journal of geophysical research</title><title level="j" type="abbreviated">J. geophys. res.</title><idno type="ISSN">0148-0227</idno><imprint><date when="2003">2003</date></imprint></series></biblStruct></sourceDesc><seriesStmt><title level="j" type="main">Journal of geophysical research</title><title level="j" type="abbreviated">J. geophys. res.</title><idno type="ISSN">0148-0227</idno></seriesStmt></fileDesc><profileDesc><textClass><keywords scheme="KwdEn" xml:lang="en"><term>Light emission</term><term>Short term variation</term><term>Spain</term><term>Temperature dependence</term><term>Temperature effect</term><term>Vegetation effect</term><term>algorithms</term><term>diurnal variations</term><term>intensity</term><term>vegetation</term><term>volatile organic compounds</term></keywords><keywords scheme="Pascal" xml:lang="fr"><term>Dépendance température</term><term>Composé organique volatil</term><term>Végétation</term><term>Effet température</term><term>Emission optique</term><term>Intensité</term><term>Algorithme</term><term>Variation diurne</term><term>Variation court terme</term><term>Action végétation</term><term>Espagne</term></keywords><keywords scheme="Wicri" type="geographic" xml:lang="fr"><term>Espagne</term></keywords></textClass></profileDesc></teiHeader><front><div type="abstract" xml:lang="en">[1] Assessments of the overall release of reactive volatile organic compounds from vegetation require the knowledge of the effect of temperature and light intensity on emission rates. The aim of the study presented here was to investigate whether the rates of emission of the highly reactive sesquiterpene β-Caryophyllene (BCAR) from foliage of orange trees (Citrus sinensis (L.) OSBECK, var. Navel and Navel Late), detected using branch enclosures in an orange orchard in Spain, were not only temperature but also light dependent. We used two algorithms to calculate the diurnal variation of BCAR emission rates from environmental data. One algorithm accounted exclusively for the known exponential relationship between emission rate and temperature, and the other for both temperature and light effects. Assuming a light and temperature dependence of BCAR emission rates led to a more precise prediction of the short-term variation of BCAR emission rates than assuming that emissions are affected exclusively by temperature. The light dependence of BCAR emission rates could be due to a modulation of BCAR synthesis by light, or to an enhanced volatilization of BCAR from storage pools under high light exposure, or a combination of both. The data show that present assessments of the total release of reactive volatile organic compounds from vegetation, disregarding light effects on BCAR emission, are highly uncertain, if BCAR considerably contributes to total terpenoid emissions of the investigated plants.</div></front></TEI><inist><standard h6="B"><pA><fA01 i1="01" i2="1"><s0>0148-0227</s0></fA01><fA03 i2="1"><s0>J. geophys. res.</s0></fA03><fA05><s2>108</s2></fA05><fA06><s2>D24</s2></fA06><fA08 i1="01" i2="1" l="ENG"><s1>Temperature and light dependence of β-caryophyllene emission rates</s1></fA08><fA11 i1="01" i2="1"><s1>HANSEN (Ute)</s1></fA11><fA11 i1="02" i2="1"><s1>SEUFERT (Günther)</s1></fA11><fA14 i1="01"><s1>European Commission, Joint Research Centre, Environment Institute</s1><s2>Ispra</s2><s3>ITA</s3><sZ>1 aut.</sZ><sZ>2 aut.</sZ></fA14><fA20><s2>AAC14.1-AAC14.7</s2></fA20><fA21><s1>2003</s1></fA21><fA23 i1="01"><s0>ENG</s0></fA23><fA43 i1="01"><s1>INIST</s1><s2>3144</s2><s5>354000119209650440</s5></fA43><fA44><s0>0000</s0><s1>© 2004 INIST-CNRS. All rights reserved.</s1></fA44><fA45><s0>41 ref.</s0></fA45><fA47 i1="01" i2="1"><s0>04-0206577</s0></fA47><fA60><s1>P</s1></fA60><fA61><s0>A</s0></fA61><fA64 i1="01" i2="1"><s0>Journal of geophysical research</s0></fA64><fA66 i1="01"><s0>USA</s0></fA66><fC01 i1="01" l="ENG"><s0>[1] Assessments of the overall release of reactive volatile organic compounds from vegetation require the knowledge of the effect of temperature and light intensity on emission rates. The aim of the study presented here was to investigate whether the rates of emission of the highly reactive sesquiterpene β-Caryophyllene (BCAR) from foliage of orange trees (Citrus sinensis (L.) OSBECK, var. Navel and Navel Late), detected using branch enclosures in an orange orchard in Spain, were not only temperature but also light dependent. We used two algorithms to calculate the diurnal variation of BCAR emission rates from environmental data. One algorithm accounted exclusively for the known exponential relationship between emission rate and temperature, and the other for both temperature and light effects. Assuming a light and temperature dependence of BCAR emission rates led to a more precise prediction of the short-term variation of BCAR emission rates than assuming that emissions are affected exclusively by temperature. The light dependence of BCAR emission rates could be due to a modulation of BCAR synthesis by light, or to an enhanced volatilization of BCAR from storage pools under high light exposure, or a combination of both. 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