The imbalance between C and N metabolism during high nitrate supply inhibits photosynthesis and overall growth in maize (Zea mays L.).
Identifieur interne : 000904 ( Main/Exploration ); précédent : 000903; suivant : 000905The imbalance between C and N metabolism during high nitrate supply inhibits photosynthesis and overall growth in maize (Zea mays L.).
Auteurs : I Igo Saiz-Fernández [République tchèque] ; Nuria De Diego [République tchèque] ; B Etislav Brzobohat [République tchèque] ; Alberto Mu Oz-Rueda [Espagne] ; Maite Lacuesta [Espagne]Source :
- Plant physiology and biochemistry : PPB [ 1873-2690 ] ; 2017.
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Abstract
Nitrogen (N) is an important regulator of photosynthetic carbon (C) flow in plants, and an adequate balance between N and C metabolism is needed for correct plant development. However, an excessive N supply can alter this balance and cause changes in specific organic compounds associated with primary and secondary metabolism, including plant growth regulators. In previous work, we observed that high nitrate supply (15 mM) to maize plants led to a decrease in leaf expansion and overall biomass production, when compared with low nitrate supply (5 mM). Thus, the aim of this work is to study how overdoses of nitrate can affect photosynthesis and plant development. The results show that high nitrate doses greatly increased amino acid production, which led to a decrease in the concentration of 2-oxoglutarate, the main source of C skeletons for N assimilation. The concentration of 1-aminocyclopropane-1-carboxylic acid (and possibly its product, ethylene) also rose in high nitrate plants, leading to a decrease in leaf expansion, reducing the demand for photoassimilates by the growing tissues and causing the accumulation of sugars in source leaves. This accumulation of sugars, together with the decrease in 2-oxoglutarate levels and the reduction in chlorophyll concentration, decreased plant photosynthetic rates. This work provides new insights into how high nitrate concentration alters the balance between C and N metabolism, reducing photosynthetic rates and disrupting whole plant development. These findings are particularly relevant since negative effects of nitrate in contexts other than root growth have rarely been studied.
DOI: 10.1016/j.plaphy.2017.10.006
PubMed: 29059604
Affiliations:
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Laboratory of Plant Molecular Biology, Institute of Biophysics AS CR, CEITEC - Central European Institute of Technology, Phytophthora Research Centre, Faculty of Agronomy, Mendel University in Brno, Zemědělská 1, CZ-613 00, Brno, Czech Republic. Electronic address: inigo.saiz@ehu.es.</nlm:affiliation><country xml:lang="fr">République tchèque</country><wicri:regionArea>Department of Plant Biology and Ecology, Faculty of Pharmacy, University of the Basque Country UPV/EHU, E-01006, Vitoria-Gasteiz, Spain; Laboratory of Plant Molecular Biology, Institute of Biophysics AS CR, CEITEC - Central European Institute of Technology, Phytophthora Research Centre, Faculty of Agronomy, Mendel University in Brno, Zemědělská 1, CZ-613 00, Brno</wicri:regionArea><placeName><settlement type="city">Brno</settlement><region>Moravie</region></placeName></affiliation></author><author><name sortKey="De Diego, Nuria" sort="De Diego, Nuria" uniqKey="De Diego N" first="Nuria" last="De Diego">Nuria De Diego</name><affiliation wicri:level="1"><nlm:affiliation>Department of Plant Biology and Ecology, Faculty of Pharmacy, University of the Basque Country UPV/EHU, E-01006, Vitoria-Gasteiz, Spain; Department of Chemical Biology and Genetics, Centre of the Region Haná for Biotechnological and Agricultural Research, Faculty of Science, Palacký University, Šlechtitelů 27, CZ-783 71, Olomouc, Czech Republic.</nlm:affiliation><country xml:lang="fr">République tchèque</country><wicri:regionArea>Department of Plant Biology and Ecology, Faculty of Pharmacy, University of the Basque Country UPV/EHU, E-01006, Vitoria-Gasteiz, Spain; 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However, an excessive N supply can alter this balance and cause changes in specific organic compounds associated with primary and secondary metabolism, including plant growth regulators. In previous work, we observed that high nitrate supply (15 mM) to maize plants led to a decrease in leaf expansion and overall biomass production, when compared with low nitrate supply (5 mM). Thus, the aim of this work is to study how overdoses of nitrate can affect photosynthesis and plant development. The results show that high nitrate doses greatly increased amino acid production, which led to a decrease in the concentration of 2-oxoglutarate, the main source of C skeletons for N assimilation. The concentration of 1-aminocyclopropane-1-carboxylic acid (and possibly its product, ethylene) also rose in high nitrate plants, leading to a decrease in leaf expansion, reducing the demand for photoassimilates by the growing tissues and causing the accumulation of sugars in source leaves. This accumulation of sugars, together with the decrease in 2-oxoglutarate levels and the reduction in chlorophyll concentration, decreased plant photosynthetic rates. This work provides new insights into how high nitrate concentration alters the balance between C and N metabolism, reducing photosynthetic rates and disrupting whole plant development. These findings are particularly relevant since negative effects of nitrate in contexts other than root growth have rarely been studied.</div></front></TEI><pubmed><MedlineCitation Status="MEDLINE" Owner="NLM"><PMID Version="1">29059604</PMID><DateCompleted><Year>2018</Year><Month>05</Month><Day>29</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>120</Volume><PubDate><Year>2017</Year><Month>Nov</Month></PubDate></JournalIssue><Title>Plant physiology and biochemistry : PPB</Title><ISOAbbreviation>Plant Physiol Biochem</ISOAbbreviation></Journal><ArticleTitle>The imbalance between C and N metabolism during high nitrate supply inhibits photosynthesis and overall growth in maize (Zea mays L.).</ArticleTitle><Pagination><MedlinePgn>213-222</MedlinePgn></Pagination><ELocationID EIdType="pii" ValidYN="Y">S0981-9428(17)30332-7</ELocationID><ELocationID EIdType="doi" ValidYN="Y">10.1016/j.plaphy.2017.10.006</ELocationID><Abstract><AbstractText>Nitrogen (N) is an important regulator of photosynthetic carbon (C) flow in plants, and an adequate balance between N and C metabolism is needed for correct plant development. However, an excessive N supply can alter this balance and cause changes in specific organic compounds associated with primary and secondary metabolism, including plant growth regulators. In previous work, we observed that high nitrate supply (15 mM) to maize plants led to a decrease in leaf expansion and overall biomass production, when compared with low nitrate supply (5 mM). Thus, the aim of this work is to study how overdoses of nitrate can affect photosynthesis and plant development. The results show that high nitrate doses greatly increased amino acid production, which led to a decrease in the concentration of 2-oxoglutarate, the main source of C skeletons for N assimilation. The concentration of 1-aminocyclopropane-1-carboxylic acid (and possibly its product, ethylene) also rose in high nitrate plants, leading to a decrease in leaf expansion, reducing the demand for photoassimilates by the growing tissues and causing the accumulation of sugars in source leaves. This accumulation of sugars, together with the decrease in 2-oxoglutarate levels and the reduction in chlorophyll concentration, decreased plant photosynthetic rates. This work provides new insights into how high nitrate concentration alters the balance between C and N metabolism, reducing photosynthetic rates and disrupting whole plant development. These findings are particularly relevant since negative effects of nitrate in contexts other than root growth have rarely been studied.</AbstractText><CopyrightInformation>Copyright © 2017 Elsevier Masson SAS. All rights reserved.</CopyrightInformation></Abstract><AuthorList CompleteYN="Y"><Author ValidYN="Y"><LastName>Saiz-Fernández</LastName><ForeName>Iñigo</ForeName><Initials>I</Initials><AffiliationInfo><Affiliation>Department of Plant Biology and Ecology, Faculty of Pharmacy, University of the Basque Country UPV/EHU, E-01006, Vitoria-Gasteiz, Spain; Laboratory of Plant Molecular Biology, Institute of Biophysics AS CR, CEITEC - Central European Institute of Technology, Phytophthora Research Centre, Faculty of Agronomy, Mendel University in Brno, Zemědělská 1, CZ-613 00, Brno, Czech Republic. Electronic address: inigo.saiz@ehu.es.</Affiliation></AffiliationInfo></Author><Author ValidYN="Y"><LastName>De Diego</LastName><ForeName>Nuria</ForeName><Initials>N</Initials><AffiliationInfo><Affiliation>Department of Plant Biology and Ecology, Faculty of Pharmacy, University of the Basque Country UPV/EHU, E-01006, Vitoria-Gasteiz, Spain; Department of Chemical Biology and Genetics, Centre of the Region Haná for Biotechnological and Agricultural Research, Faculty of Science, Palacký University, Šlechtitelů 27, CZ-783 71, Olomouc, Czech Republic.</Affiliation></AffiliationInfo></Author><Author ValidYN="Y"><LastName>Brzobohatý</LastName><ForeName>Břetislav</ForeName><Initials>B</Initials><AffiliationInfo><Affiliation>Laboratory of Plant Molecular Biology, Institute of Biophysics AS CR, CEITEC - Central European Institute of Technology, Phytophthora Research Centre, Faculty of Agronomy, Mendel University in Brno, Zemědělská 1, CZ-613 00, Brno, Czech Republic.</Affiliation></AffiliationInfo></Author><Author ValidYN="Y"><LastName>Muñoz-Rueda</LastName><ForeName>Alberto</ForeName><Initials>A</Initials><AffiliationInfo><Affiliation>Department of Plant Biology and Ecology, Faculty of Sciences and Technology, University of the Basque Country UPV/EHU, E-48080, Leioa, Spain.</Affiliation></AffiliationInfo></Author><Author ValidYN="Y"><LastName>Lacuesta</LastName><ForeName>Maite</ForeName><Initials>M</Initials><AffiliationInfo><Affiliation>Department of Plant Biology and Ecology, Faculty of Pharmacy, University of the Basque Country UPV/EHU, E-01006, Vitoria-Gasteiz, Spain.</Affiliation></AffiliationInfo></Author></AuthorList><Language>eng</Language><PublicationTypeList><PublicationType UI="D016428">Journal Article</PublicationType></PublicationTypeList><ArticleDate DateType="Electronic"><Year>2017</Year><Month>10</Month><Day>12</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="D009566">Nitrates</NameOfSubstance></Chemical><Chemical><RegistryNumber>7440-44-0</RegistryNumber><NameOfSubstance UI="D002244">Carbon</NameOfSubstance></Chemical><Chemical><RegistryNumber>N762921K75</RegistryNumber><NameOfSubstance UI="D009584">Nitrogen</NameOfSubstance></Chemical></ChemicalList><CitationSubset>IM</CitationSubset><MeshHeadingList><MeshHeading><DescriptorName UI="D002244" MajorTopicYN="N">Carbon</DescriptorName><QualifierName UI="Q000378" MajorTopicYN="Y">metabolism</QualifierName></MeshHeading><MeshHeading><DescriptorName UI="D009566" MajorTopicYN="N">Nitrates</DescriptorName><QualifierName UI="Q000494" MajorTopicYN="Y">pharmacology</QualifierName></MeshHeading><MeshHeading><DescriptorName UI="D009584" MajorTopicYN="N">Nitrogen</DescriptorName><QualifierName UI="Q000378" MajorTopicYN="Y">metabolism</QualifierName></MeshHeading><MeshHeading><DescriptorName UI="D010788" MajorTopicYN="N">Photosynthesis</DescriptorName><QualifierName UI="Q000187" MajorTopicYN="Y">drug effects</QualifierName></MeshHeading><MeshHeading><DescriptorName UI="D003313" MajorTopicYN="N">Zea mays</DescriptorName><QualifierName UI="Q000254" MajorTopicYN="Y">growth & development</QualifierName><QualifierName UI="Q000378" MajorTopicYN="N">metabolism</QualifierName></MeshHeading></MeshHeadingList><KeywordList Owner="NOTNLM"><Keyword MajorTopicYN="N">2-Oxoglutarate</Keyword><Keyword MajorTopicYN="N">ACC</Keyword><Keyword MajorTopicYN="N">Amino acids</Keyword><Keyword MajorTopicYN="N">Cytokinins</Keyword><Keyword MajorTopicYN="N">Krebs cycle</Keyword><Keyword MajorTopicYN="N">Leaf expansion</Keyword><Keyword MajorTopicYN="N">Sugars</Keyword></KeywordList></MedlineCitation><PubmedData><History><PubMedPubDate 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