Effects of simulated atmospheric nitrogen deposition on foliar chemistry and physiology of hybrid poplar seedlings.
Identifieur interne : 000998 ( Main/Exploration ); précédent : 000997; suivant : 000999Effects of simulated atmospheric nitrogen deposition on foliar chemistry and physiology of hybrid poplar seedlings.
Auteurs : Yanbo Hu [République populaire de Chine] ; Andreas D. Peuke [Allemagne] ; Xiyang Zhao [République populaire de Chine] ; Junxin Yan [République populaire de Chine] ; Chunming Li [République populaire de Chine]Source :
- Plant physiology and biochemistry : PPB [ 1873-2690 ] ; 2019.
Descripteurs français
- KwdFr :
- MESH :
- métabolisme : Acides aminés, Azote, Feuilles de plante, Plant, Polyamines, Populus.
English descriptors
- KwdEn :
- MESH :
- chemical , metabolism : Amino Acids, Nitrogen, Polyamines.
- metabolism : Plant Leaves, Populus, Seedlings.
Abstract
During recent decades, the southern and eastern regions of Asia have experienced high levels of atmospheric N deposition. Excess N deposition is predicted to influence tree growth and species composition in the regions, but visual or physiological assessments alone are not sufficient to determine the real effects of atmospheric N deposition. In this study, we simulated atmospheric wet deposition of inorganic N by spraying a NO3- solution (20 mmol⋅L-1) or a mixture of NO3- (20 mmol⋅L-1) plus NO2- (100 or 300 μmol⋅L-1) on leaves of hybrid poplar (Populus alba × Populus berolinensis) seedlings and examined morphoanatomical traits and physiological processes. Leaves of seedlings sprayed with single or mixed N solutions developed marginal necrosis, curling, and small cracks on the adaxial surface. The silicon (Si)-rich crystals were larger (about 100% increase in crystal diameter compared to untreated seedlings) on the adaxial leaf surface, with a significant positive correlation between the atomic percentage of N and Si on the crystal areas of the surface. Leaves were sensitive to NO2- compared with NO3- even at a low concentration; water content, dry mass, and photochemical variables significantly declined and dark respiration increased only in leaves treated with mixed N form. Mixed N foliar applications significantly increased leaf concentrations of the free amino acids Glu, Gln, and Asn and organic acids oxaloacetic acid and citric acid. Besides, mixed N treatment stimulated leaf transamination, as indicated by significant increases in Ala and Asp concentrations and activities of glutamic oxalacetic transaminase and glutamic pyruvic transaminase. However, mixed N applications led to declines in leaf concentrations of putrescine (by 65%, p = 0.01) and spermine (by 53%, p = 0.01). A higher proportion of NO2- (300 μmol⋅L-1) in mixed N solution was inhibitory to key N-metabolic enzymes and N translocation via the phloem. Our results showed that wet deposition of airborne N pollutants modified surface properties and induced additional detrimental effects related to N-compound foliar absorption. Furthermore, our findings indicate that detoxification of reactive N is apparently related to N assimilation and export from the treated leaves via the phloem.
DOI: 10.1016/j.plaphy.2019.08.023
PubMed: 31491704
Affiliations:
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Electronic address: huybnefu@yahoo.com.</nlm:affiliation><country xml:lang="fr">République populaire de Chine</country><wicri:regionArea>Key Laboratory of Saline-alkali Vegetation Ecology Restoration, Ministry of Education, College of Life Sciences, Northeast Forestry University, Harbin City, 150040, PR China; State Key Laboratory of Tree Genetics and Breeding, Northeast Forestry University, Harbin City, 150040</wicri:regionArea><wicri:noRegion>150040</wicri:noRegion></affiliation></author><author><name sortKey="Peuke, Andreas D" sort="Peuke, Andreas D" uniqKey="Peuke A" first="Andreas D" last="Peuke">Andreas D. Peuke</name><affiliation wicri:level="1"><nlm:affiliation>ADP International Plant Science Consulting, Talstrasse 8, D-79194, Gundelfingen, Germany.</nlm:affiliation><country xml:lang="fr">Allemagne</country><wicri:regionArea>ADP International Plant Science Consulting, Talstrasse 8, D-79194, Gundelfingen</wicri:regionArea><wicri:noRegion>79194, Gundelfingen</wicri:noRegion><wicri:noRegion>79194, Gundelfingen</wicri:noRegion><wicri:noRegion>Gundelfingen</wicri:noRegion></affiliation></author><author><name sortKey="Zhao, Xiyang" sort="Zhao, Xiyang" uniqKey="Zhao X" first="Xiyang" last="Zhao">Xiyang Zhao</name><affiliation wicri:level="1"><nlm:affiliation>State Key Laboratory of Tree Genetics and Breeding, Northeast Forestry University, Harbin City, 150040, PR China.</nlm:affiliation><country xml:lang="fr">République populaire de Chine</country><wicri:regionArea>State Key Laboratory of Tree Genetics and Breeding, Northeast Forestry University, Harbin City, 150040</wicri:regionArea><wicri:noRegion>150040</wicri:noRegion></affiliation></author><author><name sortKey="Yan, Junxin" sort="Yan, Junxin" uniqKey="Yan J" first="Junxin" last="Yan">Junxin Yan</name><affiliation wicri:level="1"><nlm:affiliation>College of Landscape Architecture, Northeast Forestry University, Harbin City, 150040, PR China.</nlm:affiliation><country xml:lang="fr">République populaire de Chine</country><wicri:regionArea>College of Landscape Architecture, Northeast Forestry University, Harbin City, 150040</wicri:regionArea><wicri:noRegion>150040</wicri:noRegion></affiliation></author><author><name sortKey="Li, Chunming" sort="Li, Chunming" uniqKey="Li C" first="Chunming" last="Li">Chunming Li</name><affiliation wicri:level="1"><nlm:affiliation>Heilongjiang Academy of Forestry, Harbin City, 150081, PR China.</nlm:affiliation><country xml:lang="fr">République populaire de Chine</country><wicri:regionArea>Heilongjiang Academy of Forestry, Harbin City, 150081</wicri:regionArea><wicri:noRegion>150081</wicri:noRegion></affiliation></author></analytic><series><title level="j">Plant physiology and biochemistry : PPB</title><idno type="eISSN">1873-2690</idno><imprint><date when="2019" type="published">2019</date></imprint></series></biblStruct></sourceDesc></fileDesc><profileDesc><textClass><keywords scheme="KwdEn" xml:lang="en"><term>Amino Acids (metabolism)</term><term>Nitrogen (metabolism)</term><term>Plant Leaves (metabolism)</term><term>Polyamines (metabolism)</term><term>Populus (metabolism)</term><term>Seedlings (metabolism)</term></keywords><keywords scheme="KwdFr" xml:lang="fr"><term>Acides aminés (métabolisme)</term><term>Azote (métabolisme)</term><term>Feuilles de plante (métabolisme)</term><term>Plant (métabolisme)</term><term>Polyamines (métabolisme)</term><term>Populus (métabolisme)</term></keywords><keywords scheme="MESH" type="chemical" qualifier="metabolism" xml:lang="en"><term>Amino Acids</term><term>Nitrogen</term><term>Polyamines</term></keywords><keywords scheme="MESH" qualifier="metabolism" xml:lang="en"><term>Plant Leaves</term><term>Populus</term><term>Seedlings</term></keywords><keywords scheme="MESH" qualifier="métabolisme" xml:lang="fr"><term>Acides aminés</term><term>Azote</term><term>Feuilles de plante</term><term>Plant</term><term>Polyamines</term><term>Populus</term></keywords></textClass></profileDesc></teiHeader><front><div type="abstract" xml:lang="en">During recent decades, the southern and eastern regions of Asia have experienced high levels of atmospheric N deposition. Excess N deposition is predicted to influence tree growth and species composition in the regions, but visual or physiological assessments alone are not sufficient to determine the real effects of atmospheric N deposition. In this study, we simulated atmospheric wet deposition of inorganic N by spraying a NO<sub>3</sub><sup>-</sup> solution (20 mmol⋅L<sup>-1</sup>) or a mixture of NO<sub>3</sub><sup>-</sup> (20 mmol⋅L<sup>-1</sup>) plus NO<sub>2</sub><sup>-</sup> (100 or 300 μmol⋅L<sup>-1</sup>) on leaves of hybrid poplar (Populus alba × Populus berolinensis) seedlings and examined morphoanatomical traits and physiological processes. Leaves of seedlings sprayed with single or mixed N solutions developed marginal necrosis, curling, and small cracks on the adaxial surface. The silicon (Si)-rich crystals were larger (about 100% increase in crystal diameter compared to untreated seedlings) on the adaxial leaf surface, with a significant positive correlation between the atomic percentage of N and Si on the crystal areas of the surface. Leaves were sensitive to NO<sub>2</sub><sup>-</sup> compared with NO<sub>3</sub><sup>-</sup> even at a low concentration; water content, dry mass, and photochemical variables significantly declined and dark respiration increased only in leaves treated with mixed N form. Mixed N foliar applications significantly increased leaf concentrations of the free amino acids Glu, Gln, and Asn and organic acids oxaloacetic acid and citric acid. Besides, mixed N treatment stimulated leaf transamination, as indicated by significant increases in Ala and Asp concentrations and activities of glutamic oxalacetic transaminase and glutamic pyruvic transaminase. However, mixed N applications led to declines in leaf concentrations of putrescine (by 65%, p = 0.01) and spermine (by 53%, p = 0.01). A higher proportion of NO<sub>2</sub><sup>-</sup> (300 μmol⋅L<sup>-1</sup>) in mixed N solution was inhibitory to key N-metabolic enzymes and N translocation via the phloem. Our results showed that wet deposition of airborne N pollutants modified surface properties and induced additional detrimental effects related to N-compound foliar absorption. Furthermore, our findings indicate that detoxification of reactive N is apparently related to N assimilation and export from the treated leaves via the phloem.</div></front></TEI><pubmed><MedlineCitation Status="MEDLINE" Owner="NLM"><PMID Version="1">31491704</PMID><DateCompleted><Year>2020</Year><Month>02</Month><Day>03</Day></DateCompleted><DateRevised><Year>2020</Year><Month>09</Month><Day>30</Day></DateRevised><Article PubModel="Print-Electronic"><Journal><ISSN IssnType="Electronic">1873-2690</ISSN><JournalIssue CitedMedium="Internet"><Volume>143</Volume><PubDate><Year>2019</Year><Month>Oct</Month></PubDate></JournalIssue><Title>Plant physiology and biochemistry : PPB</Title><ISOAbbreviation>Plant Physiol Biochem</ISOAbbreviation></Journal><ArticleTitle>Effects of simulated atmospheric nitrogen deposition on foliar chemistry and physiology of hybrid poplar seedlings.</ArticleTitle><Pagination><MedlinePgn>94-108</MedlinePgn></Pagination><ELocationID EIdType="pii" ValidYN="Y">S0981-9428(19)30329-8</ELocationID><ELocationID EIdType="doi" ValidYN="Y">10.1016/j.plaphy.2019.08.023</ELocationID><Abstract><AbstractText>During recent decades, the southern and eastern regions of Asia have experienced high levels of atmospheric N deposition. Excess N deposition is predicted to influence tree growth and species composition in the regions, but visual or physiological assessments alone are not sufficient to determine the real effects of atmospheric N deposition. In this study, we simulated atmospheric wet deposition of inorganic N by spraying a NO<sub>3</sub><sup>-</sup> solution (20 mmol⋅L<sup>-1</sup>) or a mixture of NO<sub>3</sub><sup>-</sup> (20 mmol⋅L<sup>-1</sup>) plus NO<sub>2</sub><sup>-</sup> (100 or 300 μmol⋅L<sup>-1</sup>) on leaves of hybrid poplar (Populus alba × Populus berolinensis) seedlings and examined morphoanatomical traits and physiological processes. Leaves of seedlings sprayed with single or mixed N solutions developed marginal necrosis, curling, and small cracks on the adaxial surface. The silicon (Si)-rich crystals were larger (about 100% increase in crystal diameter compared to untreated seedlings) on the adaxial leaf surface, with a significant positive correlation between the atomic percentage of N and Si on the crystal areas of the surface. Leaves were sensitive to NO<sub>2</sub><sup>-</sup> compared with NO<sub>3</sub><sup>-</sup> even at a low concentration; water content, dry mass, and photochemical variables significantly declined and dark respiration increased only in leaves treated with mixed N form. Mixed N foliar applications significantly increased leaf concentrations of the free amino acids Glu, Gln, and Asn and organic acids oxaloacetic acid and citric acid. Besides, mixed N treatment stimulated leaf transamination, as indicated by significant increases in Ala and Asp concentrations and activities of glutamic oxalacetic transaminase and glutamic pyruvic transaminase. However, mixed N applications led to declines in leaf concentrations of putrescine (by 65%, p = 0.01) and spermine (by 53%, p = 0.01). A higher proportion of NO<sub>2</sub><sup>-</sup> (300 μmol⋅L<sup>-1</sup>) in mixed N solution was inhibitory to key N-metabolic enzymes and N translocation via the phloem. Our results showed that wet deposition of airborne N pollutants modified surface properties and induced additional detrimental effects related to N-compound foliar absorption. Furthermore, our findings indicate that detoxification of reactive N is apparently related to N assimilation and export from the treated leaves via the phloem.</AbstractText><CopyrightInformation>Copyright © 2019 Elsevier Masson SAS. All rights reserved.</CopyrightInformation></Abstract><AuthorList CompleteYN="Y"><Author ValidYN="Y"><LastName>Hu</LastName><ForeName>Yanbo</ForeName><Initials>Y</Initials><AffiliationInfo><Affiliation>Key Laboratory of Saline-alkali Vegetation Ecology Restoration, Ministry of Education, College of Life Sciences, Northeast Forestry University, Harbin City, 150040, PR China; State Key Laboratory of Tree Genetics and Breeding, Northeast Forestry University, Harbin City, 150040, PR China. Electronic address: huybnefu@yahoo.com.</Affiliation></AffiliationInfo></Author><Author ValidYN="Y"><LastName>Peuke</LastName><ForeName>Andreas D</ForeName><Initials>AD</Initials><AffiliationInfo><Affiliation>ADP International Plant Science Consulting, Talstrasse 8, D-79194, Gundelfingen, Germany.</Affiliation></AffiliationInfo></Author><Author ValidYN="Y"><LastName>Zhao</LastName><ForeName>Xiyang</ForeName><Initials>X</Initials><AffiliationInfo><Affiliation>State Key Laboratory of Tree Genetics and Breeding, Northeast Forestry University, Harbin City, 150040, PR China.</Affiliation></AffiliationInfo></Author><Author ValidYN="Y"><LastName>Yan</LastName><ForeName>Junxin</ForeName><Initials>J</Initials><AffiliationInfo><Affiliation>College of Landscape Architecture, Northeast Forestry University, Harbin City, 150040, PR China.</Affiliation></AffiliationInfo></Author><Author ValidYN="Y"><LastName>Li</LastName><ForeName>Chunming</ForeName><Initials>C</Initials><AffiliationInfo><Affiliation>Heilongjiang Academy of Forestry, Harbin City, 150081, PR China.</Affiliation></AffiliationInfo></Author></AuthorList><Language>eng</Language><PublicationTypeList><PublicationType UI="D016428">Journal Article</PublicationType></PublicationTypeList><ArticleDate DateType="Electronic"><Year>2019</Year><Month>08</Month><Day>30</Day></ArticleDate></Article><MedlineJournalInfo><Country>France</Country><MedlineTA>Plant Physiol Biochem</MedlineTA><NlmUniqueID>9882449</NlmUniqueID><ISSNLinking>0981-9428</ISSNLinking></MedlineJournalInfo><ChemicalList><Chemical><RegistryNumber>0</RegistryNumber><NameOfSubstance UI="D000596">Amino Acids</NameOfSubstance></Chemical><Chemical><RegistryNumber>0</RegistryNumber><NameOfSubstance UI="D011073">Polyamines</NameOfSubstance></Chemical><Chemical><RegistryNumber>N762921K75</RegistryNumber><NameOfSubstance UI="D009584">Nitrogen</NameOfSubstance></Chemical></ChemicalList><CitationSubset>IM</CitationSubset><MeshHeadingList><MeshHeading><DescriptorName UI="D000596" MajorTopicYN="N">Amino Acids</DescriptorName><QualifierName UI="Q000378" MajorTopicYN="N">metabolism</QualifierName></MeshHeading><MeshHeading><DescriptorName UI="D009584" MajorTopicYN="N">Nitrogen</DescriptorName><QualifierName UI="Q000378" MajorTopicYN="Y">metabolism</QualifierName></MeshHeading><MeshHeading><DescriptorName UI="D018515" MajorTopicYN="N">Plant Leaves</DescriptorName><QualifierName UI="Q000378" MajorTopicYN="Y">metabolism</QualifierName></MeshHeading><MeshHeading><DescriptorName UI="D011073" MajorTopicYN="N">Polyamines</DescriptorName><QualifierName UI="Q000378" MajorTopicYN="N">metabolism</QualifierName></MeshHeading><MeshHeading><DescriptorName UI="D032107" MajorTopicYN="N">Populus</DescriptorName><QualifierName UI="Q000378" MajorTopicYN="Y">metabolism</QualifierName></MeshHeading><MeshHeading><DescriptorName UI="D036226" MajorTopicYN="N">Seedlings</DescriptorName><QualifierName UI="Q000378" MajorTopicYN="Y">metabolism</QualifierName></MeshHeading></MeshHeadingList><KeywordList Owner="NOTNLM"><Keyword MajorTopicYN="N">Atmospheric nitrogen deposition</Keyword><Keyword MajorTopicYN="N">Crystal</Keyword><Keyword MajorTopicYN="N">Dark respiration</Keyword><Keyword MajorTopicYN="N">Free amino acid</Keyword><Keyword MajorTopicYN="N">Polyamine</Keyword><Keyword MajorTopicYN="N">Poplar</Keyword></KeywordList></MedlineCitation><PubmedData><History><PubMedPubDate PubStatus="received"><Year>2019</Year><Month>04</Month><Day>23</Day></PubMedPubDate><PubMedPubDate PubStatus="revised"><Year>2019</Year><Month>08</Month><Day>27</Day></PubMedPubDate><PubMedPubDate PubStatus="accepted"><Year>2019</Year><Month>08</Month><Day>27</Day></PubMedPubDate><PubMedPubDate PubStatus="pubmed"><Year>2019</Year><Month>9</Month><Day>7</Day><Hour>6</Hour><Minute>0</Minute></PubMedPubDate><PubMedPubDate PubStatus="medline"><Year>2020</Year><Month>2</Month><Day>6</Day><Hour>6</Hour><Minute>0</Minute></PubMedPubDate><PubMedPubDate PubStatus="entrez"><Year>2019</Year><Month>9</Month><Day>7</Day><Hour>6</Hour><Minute>0</Minute></PubMedPubDate></History><PublicationStatus>ppublish</PublicationStatus><ArticleIdList><ArticleId IdType="pubmed">31491704</ArticleId><ArticleId IdType="pii">S0981-9428(19)30329-8</ArticleId><ArticleId IdType="doi">10.1016/j.plaphy.2019.08.023</ArticleId></ArticleIdList></PubmedData></pubmed><affiliations><list><country><li>Allemagne</li><li>République populaire de Chine</li></country></list><tree><country name="République populaire de Chine"><noRegion><name sortKey="Hu, Yanbo" sort="Hu, Yanbo" uniqKey="Hu Y" first="Yanbo" last="Hu">Yanbo Hu</name></noRegion><name sortKey="Li, Chunming" sort="Li, Chunming" uniqKey="Li C" first="Chunming" last="Li">Chunming Li</name><name sortKey="Yan, Junxin" sort="Yan, Junxin" uniqKey="Yan J" first="Junxin" last="Yan">Junxin Yan</name><name sortKey="Zhao, Xiyang" sort="Zhao, Xiyang" uniqKey="Zhao X" first="Xiyang" last="Zhao">Xiyang Zhao</name></country><country name="Allemagne"><noRegion><name sortKey="Peuke, Andreas D" sort="Peuke, Andreas D" uniqKey="Peuke A" first="Andreas D" last="Peuke">Andreas D. 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