Influence of different mineral nitrogen sources (NO3(-)-N vs. NH4(+)-N) on arbuscular mycorrhiza development and N transfer in a Glomus intraradices-cowpea symbiosis.
Identifieur interne : 001F11 ( Main/Corpus ); précédent : 001F10; suivant : 001F12Influence of different mineral nitrogen sources (NO3(-)-N vs. NH4(+)-N) on arbuscular mycorrhiza development and N transfer in a Glomus intraradices-cowpea symbiosis.
Auteurs : Benard Ngwene ; Elke Gabriel ; Eckhard GeorgeSource :
- Mycorrhiza [ 1432-1890 ] ; 2013.
English descriptors
- KwdEn :
- Ammonia (metabolism), Fabaceae (metabolism), Fabaceae (microbiology), Glomeromycota (metabolism), Glomeromycota (physiology), Mycelium (metabolism), Mycorrhizae (metabolism), Mycorrhizae (physiology), Nitrates (metabolism), Nitrogen (metabolism), Plant Roots (metabolism), Plant Roots (microbiology), Symbiosis (MeSH).
- MESH :
- chemical , metabolism : Ammonia, Nitrates, Nitrogen.
- metabolism : Fabaceae, Glomeromycota, Mycelium, Mycorrhizae, Plant Roots.
- microbiology : Fabaceae, Plant Roots.
- physiology : Glomeromycota, Mycorrhizae.
- Symbiosis.
Abstract
Labeled nitrogen ((15)N) was applied to a soil-based substrate in order to study the uptake of N by Glomus intraradices extraradical mycelium (ERM) from different mineral N (NO(3)(-) vs. NH(4)(+)) sources and the subsequent transfer to cowpea plants. Fungal compartments (FCs) were placed within the plant growth substrate to simulate soil patches containing root-inaccessible, but mycorrhiza-accessible, N. The fungus was able to take up both N-forms, NO(3)(-) and NH(4)(+). However, the amount of N transferred from the FC to the plant was higher when NO(3)(-) was applied to the FC. In contrast, analysis of ERM harvested from the FC showed a higher (15)N enrichment when the FC was supplied with (15)NH(4)(+) compared with (15)NO(3)(-). The (15)N shoot/root ratio of plants supplied with (15)NO(3)(-) was much higher than that of plants supplied with (15)NH(4)(+), indicative of a faster transfer of (15)NO(3)(-) from the root to the shoot and a higher accumulation of (15)NH (4)(+) in the root and/or intraradical mycelium. It is concluded that hyphae of the arbuscular mycorrhizal fungus may absorb NH(4)(+) preferentially over NO(3)(-) but that export of N from the hyphae to the root and shoot may be greater following NO(3)(-) uptake. The need for NH(4)(+) to be assimilated into organically bound N prior to transport into the plant is discussed.
DOI: 10.1007/s00572-012-0453-z
PubMed: 22810583
PubMed Central: PMC3555231
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<record><TEI><teiHeader><fileDesc><titleStmt><title xml:lang="en">Influence of different mineral nitrogen sources (NO3(-)-N vs. NH4(+)-N) on arbuscular mycorrhiza development and N transfer in a Glomus intraradices-cowpea symbiosis.</title><author><name sortKey="Ngwene, Benard" sort="Ngwene, Benard" uniqKey="Ngwene B" first="Benard" last="Ngwene">Benard Ngwene</name><affiliation><nlm:affiliation>Leibniz-Institute of Vegetable and Ornamental Crops Grossbeeren and Erfurt e.V., Theodor-Echtermeyer-Weg 1, 14979 Grossbeeren, Germany. ngwene@igzev.de</nlm:affiliation></affiliation></author><author><name sortKey="Gabriel, Elke" sort="Gabriel, Elke" uniqKey="Gabriel E" first="Elke" last="Gabriel">Elke Gabriel</name></author><author><name sortKey="George, Eckhard" sort="George, Eckhard" uniqKey="George E" first="Eckhard" last="George">Eckhard George</name></author></titleStmt><publicationStmt><idno type="wicri:source">PubMed</idno><date when="2013">2013</date><idno type="RBID">pubmed:22810583</idno><idno type="pmid">22810583</idno><idno type="doi">10.1007/s00572-012-0453-z</idno><idno type="pmc">PMC3555231</idno><idno type="wicri:Area/Main/Corpus">001F11</idno><idno type="wicri:explorRef" wicri:stream="Main" wicri:step="Corpus" wicri:corpus="PubMed">001F11</idno></publicationStmt><sourceDesc><biblStruct><analytic><title xml:lang="en">Influence of different mineral nitrogen sources (NO3(-)-N vs. NH4(+)-N) on arbuscular mycorrhiza development and N transfer in a Glomus intraradices-cowpea symbiosis.</title><author><name sortKey="Ngwene, Benard" sort="Ngwene, Benard" uniqKey="Ngwene B" first="Benard" last="Ngwene">Benard Ngwene</name><affiliation><nlm:affiliation>Leibniz-Institute of Vegetable and Ornamental Crops Grossbeeren and Erfurt e.V., Theodor-Echtermeyer-Weg 1, 14979 Grossbeeren, Germany. ngwene@igzev.de</nlm:affiliation></affiliation></author><author><name sortKey="Gabriel, Elke" sort="Gabriel, Elke" uniqKey="Gabriel E" first="Elke" last="Gabriel">Elke Gabriel</name></author><author><name sortKey="George, Eckhard" sort="George, Eckhard" uniqKey="George E" first="Eckhard" last="George">Eckhard George</name></author></analytic><series><title level="j">Mycorrhiza</title><idno type="eISSN">1432-1890</idno><imprint><date when="2013" type="published">2013</date></imprint></series></biblStruct></sourceDesc></fileDesc><profileDesc><textClass><keywords scheme="KwdEn" xml:lang="en"><term>Ammonia (metabolism)</term><term>Fabaceae (metabolism)</term><term>Fabaceae (microbiology)</term><term>Glomeromycota (metabolism)</term><term>Glomeromycota (physiology)</term><term>Mycelium (metabolism)</term><term>Mycorrhizae (metabolism)</term><term>Mycorrhizae (physiology)</term><term>Nitrates (metabolism)</term><term>Nitrogen (metabolism)</term><term>Plant Roots (metabolism)</term><term>Plant Roots (microbiology)</term><term>Symbiosis (MeSH)</term></keywords><keywords scheme="MESH" type="chemical" qualifier="metabolism" xml:lang="en"><term>Ammonia</term><term>Nitrates</term><term>Nitrogen</term></keywords><keywords scheme="MESH" qualifier="metabolism" xml:lang="en"><term>Fabaceae</term><term>Glomeromycota</term><term>Mycelium</term><term>Mycorrhizae</term><term>Plant Roots</term></keywords><keywords scheme="MESH" qualifier="microbiology" xml:lang="en"><term>Fabaceae</term><term>Plant Roots</term></keywords><keywords scheme="MESH" qualifier="physiology" xml:lang="en"><term>Glomeromycota</term><term>Mycorrhizae</term></keywords><keywords scheme="MESH" xml:lang="en"><term>Symbiosis</term></keywords></textClass></profileDesc></teiHeader><front><div type="abstract" xml:lang="en">Labeled nitrogen ((15)N) was applied to a soil-based substrate in order to study the uptake of N by Glomus intraradices extraradical mycelium (ERM) from different mineral N (NO(3)(-) vs. NH(4)(+)) sources and the subsequent transfer to cowpea plants. Fungal compartments (FCs) were placed within the plant growth substrate to simulate soil patches containing root-inaccessible, but mycorrhiza-accessible, N. The fungus was able to take up both N-forms, NO(3)(-) and NH(4)(+). However, the amount of N transferred from the FC to the plant was higher when NO(3)(-) was applied to the FC. In contrast, analysis of ERM harvested from the FC showed a higher (15)N enrichment when the FC was supplied with (15)NH(4)(+) compared with (15)NO(3)(-). The (15)N shoot/root ratio of plants supplied with (15)NO(3)(-) was much higher than that of plants supplied with (15)NH(4)(+), indicative of a faster transfer of (15)NO(3)(-) from the root to the shoot and a higher accumulation of (15)NH (4)(+) in the root and/or intraradical mycelium. It is concluded that hyphae of the arbuscular mycorrhizal fungus may absorb NH(4)(+) preferentially over NO(3)(-) but that export of N from the hyphae to the root and shoot may be greater following NO(3)(-) uptake. The need for NH(4)(+) to be assimilated into organically bound N prior to transport into the plant is discussed.</div></front></TEI><pubmed><MedlineCitation Status="MEDLINE" Owner="NLM"><PMID Version="1">22810583</PMID><DateCompleted><Year>2013</Year><Month>07</Month><Day>03</Day></DateCompleted><DateRevised><Year>2018</Year><Month>11</Month><Day>13</Day></DateRevised><Article PubModel="Print-Electronic"><Journal><ISSN IssnType="Electronic">1432-1890</ISSN><JournalIssue CitedMedium="Internet"><Volume>23</Volume><Issue>2</Issue><PubDate><Year>2013</Year><Month>Feb</Month></PubDate></JournalIssue><Title>Mycorrhiza</Title><ISOAbbreviation>Mycorrhiza</ISOAbbreviation></Journal><ArticleTitle>Influence of different mineral nitrogen sources (NO3(-)-N vs. NH4(+)-N) on arbuscular mycorrhiza development and N transfer in a Glomus intraradices-cowpea symbiosis.</ArticleTitle><Pagination><MedlinePgn>107-17</MedlinePgn></Pagination><ELocationID EIdType="doi" ValidYN="Y">10.1007/s00572-012-0453-z</ELocationID><Abstract><AbstractText>Labeled nitrogen ((15)N) was applied to a soil-based substrate in order to study the uptake of N by Glomus intraradices extraradical mycelium (ERM) from different mineral N (NO(3)(-) vs. NH(4)(+)) sources and the subsequent transfer to cowpea plants. Fungal compartments (FCs) were placed within the plant growth substrate to simulate soil patches containing root-inaccessible, but mycorrhiza-accessible, N. The fungus was able to take up both N-forms, NO(3)(-) and NH(4)(+). However, the amount of N transferred from the FC to the plant was higher when NO(3)(-) was applied to the FC. In contrast, analysis of ERM harvested from the FC showed a higher (15)N enrichment when the FC was supplied with (15)NH(4)(+) compared with (15)NO(3)(-). The (15)N shoot/root ratio of plants supplied with (15)NO(3)(-) was much higher than that of plants supplied with (15)NH(4)(+), indicative of a faster transfer of (15)NO(3)(-) from the root to the shoot and a higher accumulation of (15)NH (4)(+) in the root and/or intraradical mycelium. It is concluded that hyphae of the arbuscular mycorrhizal fungus may absorb NH(4)(+) preferentially over NO(3)(-) but that export of N from the hyphae to the root and shoot may be greater following NO(3)(-) uptake. The need for NH(4)(+) to be assimilated into organically bound N prior to transport into the plant is discussed.</AbstractText></Abstract><AuthorList CompleteYN="Y"><Author ValidYN="Y"><LastName>Ngwene</LastName><ForeName>Benard</ForeName><Initials>B</Initials><AffiliationInfo><Affiliation>Leibniz-Institute of Vegetable and Ornamental Crops Grossbeeren and Erfurt e.V., Theodor-Echtermeyer-Weg 1, 14979 Grossbeeren, Germany. ngwene@igzev.de</Affiliation></AffiliationInfo></Author><Author ValidYN="Y"><LastName>Gabriel</LastName><ForeName>Elke</ForeName><Initials>E</Initials></Author><Author ValidYN="Y"><LastName>George</LastName><ForeName>Eckhard</ForeName><Initials>E</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><ArticleDate DateType="Electronic"><Year>2012</Year><Month>07</Month><Day>19</Day></ArticleDate></Article><MedlineJournalInfo><Country>Germany</Country><MedlineTA>Mycorrhiza</MedlineTA><NlmUniqueID>100955036</NlmUniqueID><ISSNLinking>0940-6360</ISSNLinking></MedlineJournalInfo><ChemicalList><Chemical><RegistryNumber>0</RegistryNumber><NameOfSubstance UI="D009566">Nitrates</NameOfSubstance></Chemical><Chemical><RegistryNumber>7664-41-7</RegistryNumber><NameOfSubstance UI="D000641">Ammonia</NameOfSubstance></Chemical><Chemical><RegistryNumber>N762921K75</RegistryNumber><NameOfSubstance UI="D009584">Nitrogen</NameOfSubstance></Chemical></ChemicalList><CitationSubset>IM</CitationSubset><MeshHeadingList><MeshHeading><DescriptorName UI="D000641" MajorTopicYN="N">Ammonia</DescriptorName><QualifierName UI="Q000378" MajorTopicYN="Y">metabolism</QualifierName></MeshHeading><MeshHeading><DescriptorName UI="D007887" MajorTopicYN="N">Fabaceae</DescriptorName><QualifierName UI="Q000378" 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