Atmospheric CO(2) and mycorrhiza effects on biomass allocation and nutrient uptake of nodulated pea (Pisum sativum L.) plants.
Identifieur interne : 003A90 ( Main/Corpus ); précédent : 003A89; suivant : 003A91Atmospheric CO(2) and mycorrhiza effects on biomass allocation and nutrient uptake of nodulated pea (Pisum sativum L.) plants.
Auteurs : M E Gavito ; P S Curtis ; T N Mikkelsen ; I. JakobsenSource :
- Journal of experimental botany [ 0022-0957 ] ; 2000.
English descriptors
- KwdEn :
- MESH :
- chemical , metabolism : Carbon Dioxide, Nitrogen, Phosphorus.
- growth & development : Peas.
- metabolism : Peas.
- physiology : Peas.
- Biomass, Photosynthesis.
Abstract
The effect of ambient and elevated atmospheric CO(2) on biomass partitioning and nutrient uptake of mycorrhizal and non-mycorrhizal pea plants grown in pots in a controlled environment was studied. The hypothesis tested was that mycorrhizae would increase C assimilation by increasing photosynthetic rates and reduce below-ground biomass allocation by improving nutrient uptake. This effect was expected to be more pronounced at elevated CO(2) where plant C supply and nutrient demand would be increased. The results showed that mycorrhizae did not interact with atmospheric CO(2) concentration in the variables measured. Mycorrhizae did not affect photosynthetic rates, had no effect on root weight or root length density and almost no effect on nutrient uptake, but still significantly increased shoot weight and reduced root/shoot ratio at harvest. Elevated CO(2) increased photosynthetic rates with no evidence for down-regulation, increased shoot weight and nutrient uptake, had no effect on root weight, and actually reduced root/shoot ratio at harvest. Non-mycorrhizal plants growing at both CO(2) concentrations had lower shoot weight than mycorrhizal plants with similar nutritional status and photosynthetic rates. It is suggested that the positive effect of mycorrhizal inoculation was caused by an enhanced C supply and C use in mycorrhizal plants than in non-mycorrhizal plants. The results indicate that plant growth was not limited by mineral nutrients, but partially source and sink limited for carbon. Mycorrhizal inoculation and elevated CO(2) might have removed such limitations and their effects on above-ground biomass were independent, positive and additive.
DOI: 10.1093/jexbot/51.352.1931
PubMed: 11113171
Links to Exploration step
pubmed:11113171Le document en format XML
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Jakobsen</name></author></titleStmt><publicationStmt><idno type="wicri:source">PubMed</idno><date when="2000">2000</date><idno type="RBID">pubmed:11113171</idno><idno type="pmid">11113171</idno><idno type="doi">10.1093/jexbot/51.352.1931</idno><idno type="wicri:Area/Main/Corpus">003A90</idno><idno type="wicri:explorRef" wicri:stream="Main" wicri:step="Corpus" wicri:corpus="PubMed">003A90</idno></publicationStmt><sourceDesc><biblStruct><analytic><title xml:lang="en">Atmospheric CO(2) and mycorrhiza effects on biomass allocation and nutrient uptake of nodulated pea (Pisum sativum L.) plants.</title><author><name sortKey="Gavito, M E" sort="Gavito, M E" uniqKey="Gavito M" first="M E" last="Gavito">M E Gavito</name><affiliation><nlm:affiliation>Plant Biology and Biogeochemistry Department, Riso National Laboratory, PO Box 49, DK-4000 Roskilde, Denmark. mayra.gavito@risoe.dk</nlm:affiliation></affiliation></author><author><name sortKey="Curtis, P S" sort="Curtis, P S" uniqKey="Curtis P" first="P S" last="Curtis">P S Curtis</name></author><author><name sortKey="Mikkelsen, T N" sort="Mikkelsen, T N" uniqKey="Mikkelsen T" first="T N" last="Mikkelsen">T N Mikkelsen</name></author><author><name sortKey="Jakobsen, I" sort="Jakobsen, I" uniqKey="Jakobsen I" first="I" last="Jakobsen">I. Jakobsen</name></author></analytic><series><title level="j">Journal of experimental botany</title><idno type="ISSN">0022-0957</idno><imprint><date when="2000" type="published">2000</date></imprint></series></biblStruct></sourceDesc></fileDesc><profileDesc><textClass><keywords scheme="KwdEn" xml:lang="en"><term>Biomass (MeSH)</term><term>Carbon Dioxide (metabolism)</term><term>Nitrogen (metabolism)</term><term>Peas (growth & development)</term><term>Peas (metabolism)</term><term>Peas (physiology)</term><term>Phosphorus (metabolism)</term><term>Photosynthesis (MeSH)</term></keywords><keywords scheme="MESH" type="chemical" qualifier="metabolism" xml:lang="en"><term>Carbon Dioxide</term><term>Nitrogen</term><term>Phosphorus</term></keywords><keywords scheme="MESH" qualifier="growth & development" xml:lang="en"><term>Peas</term></keywords><keywords scheme="MESH" qualifier="metabolism" xml:lang="en"><term>Peas</term></keywords><keywords scheme="MESH" qualifier="physiology" xml:lang="en"><term>Peas</term></keywords><keywords scheme="MESH" xml:lang="en"><term>Biomass</term><term>Photosynthesis</term></keywords></textClass></profileDesc></teiHeader><front><div type="abstract" xml:lang="en">The effect of ambient and elevated atmospheric CO(2) on biomass partitioning and nutrient uptake of mycorrhizal and non-mycorrhizal pea plants grown in pots in a controlled environment was studied. The hypothesis tested was that mycorrhizae would increase C assimilation by increasing photosynthetic rates and reduce below-ground biomass allocation by improving nutrient uptake. This effect was expected to be more pronounced at elevated CO(2) where plant C supply and nutrient demand would be increased. The results showed that mycorrhizae did not interact with atmospheric CO(2) concentration in the variables measured. Mycorrhizae did not affect photosynthetic rates, had no effect on root weight or root length density and almost no effect on nutrient uptake, but still significantly increased shoot weight and reduced root/shoot ratio at harvest. Elevated CO(2) increased photosynthetic rates with no evidence for down-regulation, increased shoot weight and nutrient uptake, had no effect on root weight, and actually reduced root/shoot ratio at harvest. Non-mycorrhizal plants growing at both CO(2) concentrations had lower shoot weight than mycorrhizal plants with similar nutritional status and photosynthetic rates. It is suggested that the positive effect of mycorrhizal inoculation was caused by an enhanced C supply and C use in mycorrhizal plants than in non-mycorrhizal plants. The results indicate that plant growth was not limited by mineral nutrients, but partially source and sink limited for carbon. Mycorrhizal inoculation and elevated CO(2) might have removed such limitations and their effects on above-ground biomass were independent, positive and additive.</div></front></TEI><pubmed><MedlineCitation Status="MEDLINE" Owner="NLM"><PMID Version="1">11113171</PMID><DateCompleted><Year>2001</Year><Month>01</Month><Day>25</Day></DateCompleted><DateRevised><Year>2019</Year><Month>05</Month><Day>13</Day></DateRevised><Article PubModel="Print"><Journal><ISSN IssnType="Print">0022-0957</ISSN><JournalIssue CitedMedium="Print"><Volume>51</Volume><Issue>352</Issue><PubDate><Year>2000</Year><Month>Nov</Month></PubDate></JournalIssue><Title>Journal of experimental botany</Title><ISOAbbreviation>J Exp Bot</ISOAbbreviation></Journal><ArticleTitle>Atmospheric CO(2) and mycorrhiza effects on biomass allocation and nutrient uptake of nodulated pea (Pisum sativum L.) plants.</ArticleTitle><Pagination><MedlinePgn>1931-8</MedlinePgn></Pagination><Abstract><AbstractText>The effect of ambient and elevated atmospheric CO(2) on biomass partitioning and nutrient uptake of mycorrhizal and non-mycorrhizal pea plants grown in pots in a controlled environment was studied. The hypothesis tested was that mycorrhizae would increase C assimilation by increasing photosynthetic rates and reduce below-ground biomass allocation by improving nutrient uptake. This effect was expected to be more pronounced at elevated CO(2) where plant C supply and nutrient demand would be increased. The results showed that mycorrhizae did not interact with atmospheric CO(2) concentration in the variables measured. Mycorrhizae did not affect photosynthetic rates, had no effect on root weight or root length density and almost no effect on nutrient uptake, but still significantly increased shoot weight and reduced root/shoot ratio at harvest. Elevated CO(2) increased photosynthetic rates with no evidence for down-regulation, increased shoot weight and nutrient uptake, had no effect on root weight, and actually reduced root/shoot ratio at harvest. Non-mycorrhizal plants growing at both CO(2) concentrations had lower shoot weight than mycorrhizal plants with similar nutritional status and photosynthetic rates. It is suggested that the positive effect of mycorrhizal inoculation was caused by an enhanced C supply and C use in mycorrhizal plants than in non-mycorrhizal plants. The results indicate that plant growth was not limited by mineral nutrients, but partially source and sink limited for carbon. Mycorrhizal inoculation and elevated CO(2) might have removed such limitations and their effects on above-ground biomass were independent, positive and additive.</AbstractText></Abstract><AuthorList CompleteYN="Y"><Author ValidYN="Y"><LastName>Gavito</LastName><ForeName>M E</ForeName><Initials>ME</Initials><AffiliationInfo><Affiliation>Plant Biology and Biogeochemistry Department, Riso National Laboratory, PO Box 49, DK-4000 Roskilde, Denmark. mayra.gavito@risoe.dk</Affiliation></AffiliationInfo></Author><Author ValidYN="Y"><LastName>Curtis</LastName><ForeName>P S</ForeName><Initials>PS</Initials></Author><Author ValidYN="Y"><LastName>Mikkelsen</LastName><ForeName>T N</ForeName><Initials>TN</Initials></Author><Author ValidYN="Y"><LastName>Jakobsen</LastName><ForeName>I</ForeName><Initials>I</Initials></Author></AuthorList><Language>eng</Language><PublicationTypeList><PublicationType UI="D016428">Journal Article</PublicationType><PublicationType UI="D013485">Research Support, Non-U.S. Gov't</PublicationType></PublicationTypeList></Article><MedlineJournalInfo><Country>England</Country><MedlineTA>J Exp Bot</MedlineTA><NlmUniqueID>9882906</NlmUniqueID><ISSNLinking>0022-0957</ISSNLinking></MedlineJournalInfo><ChemicalList><Chemical><RegistryNumber>142M471B3J</RegistryNumber><NameOfSubstance UI="D002245">Carbon Dioxide</NameOfSubstance></Chemical><Chemical><RegistryNumber>27YLU75U4W</RegistryNumber><NameOfSubstance UI="D010758">Phosphorus</NameOfSubstance></Chemical><Chemical><RegistryNumber>N762921K75</RegistryNumber><NameOfSubstance UI="D009584">Nitrogen</NameOfSubstance></Chemical></ChemicalList><CitationSubset>IM</CitationSubset><MeshHeadingList><MeshHeading><DescriptorName UI="D018533" MajorTopicYN="N">Biomass</DescriptorName></MeshHeading><MeshHeading><DescriptorName UI="D002245" MajorTopicYN="N">Carbon Dioxide</DescriptorName><QualifierName UI="Q000378" MajorTopicYN="Y">metabolism</QualifierName></MeshHeading><MeshHeading><DescriptorName UI="D009584" MajorTopicYN="N">Nitrogen</DescriptorName><QualifierName UI="Q000378" MajorTopicYN="Y">metabolism</QualifierName></MeshHeading><MeshHeading><DescriptorName UI="D018532" MajorTopicYN="N">Peas</DescriptorName><QualifierName UI="Q000254" MajorTopicYN="N">growth & development</QualifierName><QualifierName UI="Q000378" MajorTopicYN="Y">metabolism</QualifierName><QualifierName UI="Q000502" MajorTopicYN="N">physiology</QualifierName></MeshHeading><MeshHeading><DescriptorName UI="D010758" MajorTopicYN="N">Phosphorus</DescriptorName><QualifierName UI="Q000378" MajorTopicYN="Y">metabolism</QualifierName></MeshHeading><MeshHeading><DescriptorName UI="D010788" MajorTopicYN="N">Photosynthesis</DescriptorName></MeshHeading></MeshHeadingList></MedlineCitation><PubmedData><History><PubMedPubDate PubStatus="pubmed"><Year>2000</Year><Month>12</Month><Day>13</Day><Hour>11</Hour><Minute>0</Minute></PubMedPubDate><PubMedPubDate PubStatus="medline"><Year>2001</Year><Month>2</Month><Day>28</Day><Hour>10</Hour><Minute>1</Minute></PubMedPubDate><PubMedPubDate PubStatus="entrez"><Year>2000</Year><Month>12</Month><Day>13</Day><Hour>11</Hour><Minute>0</Minute></PubMedPubDate></History><PublicationStatus>ppublish</PublicationStatus><ArticleIdList><ArticleId IdType="pubmed">11113171</ArticleId><ArticleId IdType="doi">10.1093/jexbot/51.352.1931</ArticleId></ArticleIdList></PubmedData></pubmed></record>Pour manipuler ce document sous Unix (Dilib)
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