Appressoria and phosphorus fluxes in mycorrhizal plants: connections between soil- and plant-based hyphae.
Identifieur interne : 000078 ( Main/Corpus ); précédent : 000077; suivant : 000079Appressoria and phosphorus fluxes in mycorrhizal plants: connections between soil- and plant-based hyphae.
Auteurs : Alessandra Pepe ; Manuela Giovannetti ; Cristiana SbranaSource :
- Mycorrhiza [ 1432-1890 ] ; 2020.
English descriptors
- KwdEn :
- MESH :
- chemical : Phosphorus, Soil.
- Hyphae, Mycorrhizae, Plant Roots.
Abstract
Arbuscular mycorrhizal fungi (AMF) live in symbiosis with plant roots, facilitating mineral nutrient transfer from soil to hosts through large networks of extraradical hyphae. Limited data are available on the fungal structures (appressoria) connecting soil- to root-based mycelium, in relation to plant nutrition. Two in vivo systems were set up using three AMF, Funneliformis mosseae, Funneliformis coronatus and Rhizoglomus irregulare, grown in symbiosis with Cichorium intybus. The assessment of plant P content, number of appressoria, diameter of their subtending hyphae and length of colonized roots allowed calculation of the total cross-section area of appressorium-subtending hyphae, which differed among the three AMF and was correlated with plant P contents and with extraradical mycelium density. A conservative evaluation of P fluxes from soil- to plant-based hyphae occurring through appressoria gave values ranging from 1.7 to 4.2 × 10-8 mol cm-2 s-1 (moles per total cross-section area of the appressorium subtending hyphae per time elapsed), depending on AMF identity. This work suggests that, beyond intraradical colonization and extraradical mycelium extent, connections between extraradical and intraradical fungal mycelium through appressoria are important for mycorrhizal plant nutrition, as appressorium structural traits and density can be related to P transfer mediated by AMF.
DOI: 10.1007/s00572-020-00972-w
PubMed: 32533256
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pubmed:32533256Le document en format XML
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Limited data are available on the fungal structures (appressoria) connecting soil- to root-based mycelium, in relation to plant nutrition. Two in vivo systems were set up using three AMF, Funneliformis mosseae, Funneliformis coronatus and Rhizoglomus irregulare, grown in symbiosis with Cichorium intybus. The assessment of plant P content, number of appressoria, diameter of their subtending hyphae and length of colonized roots allowed calculation of the total cross-section area of appressorium-subtending hyphae, which differed among the three AMF and was correlated with plant P contents and with extraradical mycelium density. A conservative evaluation of P fluxes from soil- to plant-based hyphae occurring through appressoria gave values ranging from 1.7 to 4.2 × 10<sup>-8</sup> mol cm<sup>-2</sup> s<sup>-1</sup> (moles per total cross-section area of the appressorium subtending hyphae per time elapsed), depending on AMF identity. This work suggests that, beyond intraradical colonization and extraradical mycelium extent, connections between extraradical and intraradical fungal mycelium through appressoria are important for mycorrhizal plant nutrition, as appressorium structural traits and density can be related to P transfer mediated by AMF.</div></front></TEI><pubmed><MedlineCitation Status="MEDLINE" IndexingMethod="Automated" Owner="NLM"><PMID Version="1">32533256</PMID><DateCompleted><Year>2020</Year><Month>08</Month><Day>10</Day></DateCompleted><DateRevised><Year>2020</Year><Month>08</Month><Day>10</Day></DateRevised><Article PubModel="Print-Electronic"><Journal><ISSN IssnType="Electronic">1432-1890</ISSN><JournalIssue CitedMedium="Internet"><Volume>30</Volume><Issue>5</Issue><PubDate><Year>2020</Year><Month>Sep</Month></PubDate></JournalIssue><Title>Mycorrhiza</Title><ISOAbbreviation>Mycorrhiza</ISOAbbreviation></Journal><ArticleTitle>Appressoria and phosphorus fluxes in mycorrhizal plants: connections between soil- and plant-based hyphae.</ArticleTitle><Pagination><MedlinePgn>589-600</MedlinePgn></Pagination><ELocationID EIdType="doi" ValidYN="Y">10.1007/s00572-020-00972-w</ELocationID><Abstract><AbstractText>Arbuscular mycorrhizal fungi (AMF) live in symbiosis with plant roots, facilitating mineral nutrient transfer from soil to hosts through large networks of extraradical hyphae. Limited data are available on the fungal structures (appressoria) connecting soil- to root-based mycelium, in relation to plant nutrition. Two in vivo systems were set up using three AMF, Funneliformis mosseae, Funneliformis coronatus and Rhizoglomus irregulare, grown in symbiosis with Cichorium intybus. The assessment of plant P content, number of appressoria, diameter of their subtending hyphae and length of colonized roots allowed calculation of the total cross-section area of appressorium-subtending hyphae, which differed among the three AMF and was correlated with plant P contents and with extraradical mycelium density. A conservative evaluation of P fluxes from soil- to plant-based hyphae occurring through appressoria gave values ranging from 1.7 to 4.2 × 10<sup>-8</sup> mol cm<sup>-2</sup> s<sup>-1</sup> (moles per total cross-section area of the appressorium subtending hyphae per time elapsed), depending on AMF identity. This work suggests that, beyond intraradical colonization and extraradical mycelium extent, connections between extraradical and intraradical fungal mycelium through appressoria are important for mycorrhizal plant nutrition, as appressorium structural traits and density can be related to P transfer mediated by AMF.</AbstractText></Abstract><AuthorList CompleteYN="Y"><Author ValidYN="Y"><LastName>Pepe</LastName><ForeName>Alessandra</ForeName><Initials>A</Initials><AffiliationInfo><Affiliation>Department of Agriculture, Food and Environment, University of Pisa, 56124, Pisa, Italy.</Affiliation></AffiliationInfo></Author><Author ValidYN="Y"><LastName>Giovannetti</LastName><ForeName>Manuela</ForeName><Initials>M</Initials><Identifier Source="ORCID">https://orcid.org/0000-0002-0716-7837</Identifier><AffiliationInfo><Affiliation>Department of Agriculture, Food and Environment, University of Pisa, 56124, Pisa, Italy.</Affiliation></AffiliationInfo></Author><Author ValidYN="Y"><LastName>Sbrana</LastName><ForeName>Cristiana</ForeName><Initials>C</Initials><Identifier Source="ORCID">https://orcid.org/0000-0002-8058-8566</Identifier><AffiliationInfo><Affiliation>CNR-Institute of Agricultural Biology and Biotechnology, Pisa Unit, 56124, Pisa, Italy. cristiana.sbrana@ibba.cnr.it.</Affiliation></AffiliationInfo></Author></AuthorList><Language>eng</Language><PublicationTypeList><PublicationType UI="D016428">Journal Article</PublicationType></PublicationTypeList><ArticleDate DateType="Electronic"><Year>2020</Year><Month>06</Month><Day>12</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="D012987">Soil</NameOfSubstance></Chemical><Chemical><RegistryNumber>27YLU75U4W</RegistryNumber><NameOfSubstance UI="D010758">Phosphorus</NameOfSubstance></Chemical></ChemicalList><CitationSubset>IM</CitationSubset><MeshHeadingList><MeshHeading><DescriptorName UI="D025301" MajorTopicYN="N">Hyphae</DescriptorName></MeshHeading><MeshHeading><DescriptorName UI="D038821" MajorTopicYN="Y">Mycorrhizae</DescriptorName></MeshHeading><MeshHeading><DescriptorName UI="D010758" MajorTopicYN="N">Phosphorus</DescriptorName></MeshHeading><MeshHeading><DescriptorName UI="D018517" MajorTopicYN="N">Plant Roots</DescriptorName></MeshHeading><MeshHeading><DescriptorName UI="D012987" MajorTopicYN="N">Soil</DescriptorName></MeshHeading></MeshHeadingList><KeywordList Owner="NOTNLM"><Keyword MajorTopicYN="N">Appressoria</Keyword><Keyword MajorTopicYN="N">Arbuscular mycorrhizal fungi</Keyword><Keyword MajorTopicYN="N">Extraradical mycorrhizal mycelium</Keyword><Keyword MajorTopicYN="N">Nutrient fluxes</Keyword><Keyword MajorTopicYN="N">P plant nutrition</Keyword></KeywordList></MedlineCitation><PubmedData><History><PubMedPubDate PubStatus="received"><Year>2020</Year><Month>03</Month><Day>18</Day></PubMedPubDate><PubMedPubDate PubStatus="accepted"><Year>2020</Year><Month>06</Month><Day>02</Day></PubMedPubDate><PubMedPubDate PubStatus="pubmed"><Year>2020</Year><Month>6</Month><Day>14</Day><Hour>6</Hour><Minute>0</Minute></PubMedPubDate><PubMedPubDate PubStatus="medline"><Year>2020</Year><Month>8</Month><Day>11</Day><Hour>6</Hour><Minute>0</Minute></PubMedPubDate><PubMedPubDate PubStatus="entrez"><Year>2020</Year><Month>6</Month><Day>14</Day><Hour>6</Hour><Minute>0</Minute></PubMedPubDate></History><PublicationStatus>ppublish</PublicationStatus><ArticleIdList><ArticleId IdType="pubmed">32533256</ArticleId><ArticleId IdType="doi">10.1007/s00572-020-00972-w</ArticleId><ArticleId IdType="pii">10.1007/s00572-020-00972-w</ArticleId></ArticleIdList></PubmedData></pubmed></record>Pour manipuler ce document sous Unix (Dilib)
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