Effects of elevated ozone concentration and nitrogen addition on ammonia stomatal compensation point in a poplar clone.
Identifieur interne : 000E91 ( Main/Corpus ); précédent : 000E90; suivant : 000E92Effects of elevated ozone concentration and nitrogen addition on ammonia stomatal compensation point in a poplar clone.
Auteurs : Wen Xu ; Bo Shang ; Yansen Xu ; Xiangyang Yuan ; Anthony J. Dore ; Yuanhong Zhao ; Raia-Silvia Massad ; Zhaozhong FengSource :
- Environmental pollution (Barking, Essex : 1987) [ 1873-6424 ] ; 2018.
English descriptors
- KwdEn :
- MESH :
- chemical , analysis : Nitrogen, Ozone.
- chemical , metabolism : Ammonia, Chlorophyll.
- chemical , toxicity : Nitrogen, Ozone.
- drug effects : Photosynthesis, Plant Leaves.
- metabolism : Populus.
- physiology : Plant Stomata, Populus.
Abstract
The stomatal compensation point of ammonia (χs) is a key factor controlling plant-atmosphere NH3 exchange, which is dependent on the nitrogen (N) supply and varies among plant species. However, knowledge gaps remain concerning the effects of elevated atmospheric N deposition and ozone (O3) on χs for forest species, resulting in large uncertainties in the parameterizations of NH3 incorporated into atmospheric chemistry and transport models (CTMs). Here, we present leaf-scale measurements of χs for hybrid poplar clone '546' (Populusdeltoides cv. 55/56 x P. deltoides cv. Imperial) growing in two N treatments (N0, no N added; N50, 50 kg N ha-1 yr-1 urea fertilizer added) and two O3 treatments (CF, charcoal-filtered air; E-O3, non-filtered air plus 40 ppb) for 105 days. Our results showed that χs was significantly reduced by E-O3 (41%) and elevated N (19%). The interaction of N and O3 was significant, and N can mitigate the negative effects of O3 on χs. Elevated O3 significantly reduced the light-saturated photosynthetic rate (Asat) and chlorophyll (Chl) content and significantly increased intercellular CO2 concentrations (Ci), but had no significant effect on stomatal conductance (gs). By contrast, elevated N did not significantly affect all measured photosynthetic parameters. Overall, χs was significantly and positively correlated with Asat, gs and Chl, whereas a significant and negative relationship was observed between χs and Ci. Our results suggest that O3-induced changes in Asat, Ci and Chl may affect χs. Our findings provide a scientific basis for optimizing parameterizations of χs in CTMs in response to environmental change factors (i.e., elevated N deposition and/or O3) in the future.
DOI: 10.1016/j.envpol.2018.03.089
PubMed: 29625300
Links to Exploration step
pubmed:29625300Le document en format XML
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<term>Nitrogen (toxicity)</term>
<term>Ozone (analysis)</term>
<term>Ozone (toxicity)</term>
<term>Photosynthesis (drug effects)</term>
<term>Plant Leaves (drug effects)</term>
<term>Plant Stomata (physiology)</term>
<term>Populus (metabolism)</term>
<term>Populus (physiology)</term>
</keywords>
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<term>Ozone</term>
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<term>Plant Leaves</term>
</keywords>
<keywords scheme="MESH" qualifier="metabolism" xml:lang="en"><term>Populus</term>
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<front><div type="abstract" xml:lang="en">The stomatal compensation point of ammonia (χ<sub>s</sub>
) is a key factor controlling plant-atmosphere NH<sub>3</sub>
exchange, which is dependent on the nitrogen (N) supply and varies among plant species. However, knowledge gaps remain concerning the effects of elevated atmospheric N deposition and ozone (O<sub>3</sub>
) on χ<sub>s</sub>
for forest species, resulting in large uncertainties in the parameterizations of NH<sub>3</sub>
incorporated into atmospheric chemistry and transport models (CTMs). Here, we present leaf-scale measurements of χ<sub>s</sub>
for hybrid poplar clone '546' (Populusdeltoides cv. 55/56 x P. deltoides cv. Imperial) growing in two N treatments (N0, no N added; N50, 50 kg N ha<sup>-1</sup>
yr<sup>-1</sup>
urea fertilizer added) and two O<sub>3</sub>
treatments (CF, charcoal-filtered air; E-O<sub>3</sub>
, non-filtered air plus 40 ppb) for 105 days. Our results showed that χ<sub>s</sub>
was significantly reduced by E-O<sub>3</sub>
(41%) and elevated N (19%). The interaction of N and O<sub>3</sub>
was significant, and N can mitigate the negative effects of O<sub>3</sub>
on χ<sub>s</sub>
. Elevated O<sub>3</sub>
significantly reduced the light-saturated photosynthetic rate (A<sub>sat</sub>
) and chlorophyll (Chl) content and significantly increased intercellular CO<sub>2</sub>
concentrations (Ci), but had no significant effect on stomatal conductance (g<sub>s</sub>
). By contrast, elevated N did not significantly affect all measured photosynthetic parameters. Overall, χ<sub>s</sub>
was significantly and positively correlated with A<sub>sat</sub>
, g<sub>s</sub>
and Chl, whereas a significant and negative relationship was observed between χ<sub>s</sub>
and Ci. Our results suggest that O<sub>3</sub>
-induced changes in A<sub>sat</sub>
, Ci and Chl may affect χ<sub>s</sub>
. Our findings provide a scientific basis for optimizing parameterizations of χ<sub>s</sub>
in CTMs in response to environmental change factors (i.e., elevated N deposition and/or O<sub>3</sub>
) in the future.</div>
</front>
</TEI>
<pubmed><MedlineCitation Status="MEDLINE" IndexingMethod="Curated" Owner="NLM"><PMID Version="1">29625300</PMID>
<DateCompleted><Year>2018</Year>
<Month>08</Month>
<Day>02</Day>
</DateCompleted>
<DateRevised><Year>2018</Year>
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<Title>Environmental pollution (Barking, Essex : 1987)</Title>
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<ArticleTitle>Effects of elevated ozone concentration and nitrogen addition on ammonia stomatal compensation point in a poplar clone.</ArticleTitle>
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<Abstract><AbstractText>The stomatal compensation point of ammonia (χ<sub>s</sub>
) is a key factor controlling plant-atmosphere NH<sub>3</sub>
exchange, which is dependent on the nitrogen (N) supply and varies among plant species. However, knowledge gaps remain concerning the effects of elevated atmospheric N deposition and ozone (O<sub>3</sub>
) on χ<sub>s</sub>
for forest species, resulting in large uncertainties in the parameterizations of NH<sub>3</sub>
incorporated into atmospheric chemistry and transport models (CTMs). Here, we present leaf-scale measurements of χ<sub>s</sub>
for hybrid poplar clone '546' (Populusdeltoides cv. 55/56 x P. deltoides cv. Imperial) growing in two N treatments (N0, no N added; N50, 50 kg N ha<sup>-1</sup>
yr<sup>-1</sup>
urea fertilizer added) and two O<sub>3</sub>
treatments (CF, charcoal-filtered air; E-O<sub>3</sub>
, non-filtered air plus 40 ppb) for 105 days. Our results showed that χ<sub>s</sub>
was significantly reduced by E-O<sub>3</sub>
(41%) and elevated N (19%). The interaction of N and O<sub>3</sub>
was significant, and N can mitigate the negative effects of O<sub>3</sub>
on χ<sub>s</sub>
. Elevated O<sub>3</sub>
significantly reduced the light-saturated photosynthetic rate (A<sub>sat</sub>
) and chlorophyll (Chl) content and significantly increased intercellular CO<sub>2</sub>
concentrations (Ci), but had no significant effect on stomatal conductance (g<sub>s</sub>
). By contrast, elevated N did not significantly affect all measured photosynthetic parameters. Overall, χ<sub>s</sub>
was significantly and positively correlated with A<sub>sat</sub>
, g<sub>s</sub>
and Chl, whereas a significant and negative relationship was observed between χ<sub>s</sub>
and Ci. Our results suggest that O<sub>3</sub>
-induced changes in A<sub>sat</sub>
, Ci and Chl may affect χ<sub>s</sub>
. Our findings provide a scientific basis for optimizing parameterizations of χ<sub>s</sub>
in CTMs in response to environmental change factors (i.e., elevated N deposition and/or O<sub>3</sub>
) in the future.</AbstractText>
<CopyrightInformation>Copyright © 2018 Elsevier Ltd. All rights reserved.</CopyrightInformation>
</Abstract>
<AuthorList CompleteYN="Y"><Author ValidYN="Y"><LastName>Xu</LastName>
<ForeName>Wen</ForeName>
<Initials>W</Initials>
<AffiliationInfo><Affiliation>State Key Laboratory of Urban and Regional Ecology, Research Center for Eco-Environmental Sciences, Chinese Academy of Sciences, Shuangqing Road 18, Haidian District, Beijing, 100085, China; College of Resources and Environment, University of Chinese Academy of Sciences, Beijing, 100049, China.</Affiliation>
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<ForeName>Bo</ForeName>
<Initials>B</Initials>
<AffiliationInfo><Affiliation>State Key Laboratory of Urban and Regional Ecology, Research Center for Eco-Environmental Sciences, Chinese Academy of Sciences, Shuangqing Road 18, Haidian District, Beijing, 100085, China; College of Resources and Environment, University of Chinese Academy of Sciences, Beijing, 100049, China.</Affiliation>
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<Initials>Y</Initials>
<AffiliationInfo><Affiliation>State Key Laboratory of Urban and Regional Ecology, Research Center for Eco-Environmental Sciences, Chinese Academy of Sciences, Shuangqing Road 18, Haidian District, Beijing, 100085, China; College of Resources and Environment, University of Chinese Academy of Sciences, Beijing, 100049, China.</Affiliation>
</AffiliationInfo>
</Author>
<Author ValidYN="Y"><LastName>Yuan</LastName>
<ForeName>Xiangyang</ForeName>
<Initials>X</Initials>
<AffiliationInfo><Affiliation>State Key Laboratory of Urban and Regional Ecology, Research Center for Eco-Environmental Sciences, Chinese Academy of Sciences, Shuangqing Road 18, Haidian District, Beijing, 100085, China; College of Resources and Environment, University of Chinese Academy of Sciences, Beijing, 100049, China.</Affiliation>
</AffiliationInfo>
</Author>
<Author ValidYN="Y"><LastName>Dore</LastName>
<ForeName>Anthony J</ForeName>
<Initials>AJ</Initials>
<AffiliationInfo><Affiliation>Centre for Ecology and Hydrology, Edinburgh, Bush Estate, Penicuik, Midlothian, EH26 0QB, UK.</Affiliation>
</AffiliationInfo>
</Author>
<Author ValidYN="Y"><LastName>Zhao</LastName>
<ForeName>Yuanhong</ForeName>
<Initials>Y</Initials>
<AffiliationInfo><Affiliation>Laboratory for Climate and Ocean-Atmosphere Sciences, Department of Atmospheric and Oceanic Sciences, School of Physics, Peking University, Beijing, 100871, China.</Affiliation>
</AffiliationInfo>
</Author>
<Author ValidYN="Y"><LastName>Massad</LastName>
<ForeName>Raia-Silvia</ForeName>
<Initials>RS</Initials>
<AffiliationInfo><Affiliation>UMR ECOSYS, INRA, Agroparistech, Université Paris-Saclay, Thiverval-Grignon, France.</Affiliation>
</AffiliationInfo>
</Author>
<Author ValidYN="Y"><LastName>Feng</LastName>
<ForeName>Zhaozhong</ForeName>
<Initials>Z</Initials>
<AffiliationInfo><Affiliation>State Key Laboratory of Urban and Regional Ecology, Research Center for Eco-Environmental Sciences, Chinese Academy of Sciences, Shuangqing Road 18, Haidian District, Beijing, 100085, China; College of Resources and Environment, University of Chinese Academy of Sciences, Beijing, 100049, China. Electronic address: fzz@rcees.ac.cn.</Affiliation>
</AffiliationInfo>
</Author>
</AuthorList>
<Language>eng</Language>
<PublicationTypeList><PublicationType UI="D016428">Journal Article</PublicationType>
</PublicationTypeList>
<ArticleDate DateType="Electronic"><Year>2018</Year>
<Month>04</Month>
<Day>04</Day>
</ArticleDate>
</Article>
<MedlineJournalInfo><Country>England</Country>
<MedlineTA>Environ Pollut</MedlineTA>
<NlmUniqueID>8804476</NlmUniqueID>
<ISSNLinking>0269-7491</ISSNLinking>
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<ChemicalList><Chemical><RegistryNumber>1406-65-1</RegistryNumber>
<NameOfSubstance UI="D002734">Chlorophyll</NameOfSubstance>
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<Chemical><RegistryNumber>66H7ZZK23N</RegistryNumber>
<NameOfSubstance UI="D010126">Ozone</NameOfSubstance>
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<Chemical><RegistryNumber>7664-41-7</RegistryNumber>
<NameOfSubstance UI="D000641">Ammonia</NameOfSubstance>
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<MeshHeadingList><MeshHeading><DescriptorName UI="D000641" MajorTopicYN="N">Ammonia</DescriptorName>
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</MeshHeading>
<MeshHeading><DescriptorName UI="D002734" MajorTopicYN="N">Chlorophyll</DescriptorName>
<QualifierName UI="Q000378" MajorTopicYN="N">metabolism</QualifierName>
</MeshHeading>
<MeshHeading><DescriptorName UI="D009584" MajorTopicYN="N">Nitrogen</DescriptorName>
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</MeshHeading>
<MeshHeading><DescriptorName UI="D010126" MajorTopicYN="N">Ozone</DescriptorName>
<QualifierName UI="Q000032" MajorTopicYN="N">analysis</QualifierName>
<QualifierName UI="Q000633" MajorTopicYN="Y">toxicity</QualifierName>
</MeshHeading>
<MeshHeading><DescriptorName UI="D010788" MajorTopicYN="N">Photosynthesis</DescriptorName>
<QualifierName UI="Q000187" MajorTopicYN="N">drug effects</QualifierName>
</MeshHeading>
<MeshHeading><DescriptorName UI="D018515" MajorTopicYN="N">Plant Leaves</DescriptorName>
<QualifierName UI="Q000187" MajorTopicYN="N">drug effects</QualifierName>
</MeshHeading>
<MeshHeading><DescriptorName UI="D054046" MajorTopicYN="N">Plant Stomata</DescriptorName>
<QualifierName UI="Q000502" MajorTopicYN="N">physiology</QualifierName>
</MeshHeading>
<MeshHeading><DescriptorName UI="D032107" MajorTopicYN="N">Populus</DescriptorName>
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<QualifierName UI="Q000502" MajorTopicYN="Y">physiology</QualifierName>
</MeshHeading>
</MeshHeadingList>
<KeywordList Owner="NOTNLM"><Keyword MajorTopicYN="N">Ammonia</Keyword>
<Keyword MajorTopicYN="N">Apoplast</Keyword>
<Keyword MajorTopicYN="N">Compensation point</Keyword>
<Keyword MajorTopicYN="N">Forest species</Keyword>
<Keyword MajorTopicYN="N">Ozone</Keyword>
</KeywordList>
</MedlineCitation>
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<Month>01</Month>
<Day>24</Day>
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<PubMedPubDate PubStatus="revised"><Year>2018</Year>
<Month>03</Month>
<Day>23</Day>
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