Arbuscular mycorrhizal fungal propagules in a salt marsh.
Identifieur interne : 003912 ( Main/Corpus ); précédent : 003911; suivant : 003913Arbuscular mycorrhizal fungal propagules in a salt marsh.
Auteurs : Luís M. Carvalho ; Patrícia M. Correia ; M Amélia Martins-LouçãoSource :
- Mycorrhiza [ 0940-6360 ] ; 2004.
English descriptors
- KwdEn :
- MESH :
- chemical : Soil.
- physiology : Fungi, Mycorrhizae, Spores, Fungal.
- Ecosystem.
Abstract
The tolerance of indigenous arbuscular mycorrhizal fungi (AMF) to stressful soil conditions and the relative contribution of spores of these fungi to plant colonization were examined in a Portuguese salt marsh. Glomus geosporum is dominant in this salt marsh. Using tetrazolium as a vital stain, a high proportion of field-collected spores were found to be metabolically active at all sampling dates. Spore germination tests showed that salt marsh spores were not affected by increasing levels of salinity, in contrast to two non-marsh spore isolates, and had a significantly higher ability to germinate under increased levels of salinity (20 per thousand) than in the absence of or at low salinity (10 per thousand). Germination of salt marsh spores was not affected by soil water levels above field capacity, in contrast to one of the two non-marsh spore isolates. For the evaluation of infectivity, a bioassay was established with undisturbed soil cores (containing all types of AM fungal propagules) and soil cores containing only spores as AM fungal propagules. Different types of propagules were able to initiate and to expand the root colonization of a native plant species, but spores were slower than mycelium and/or root fragments in colonizing host roots. The AM fungal adaptation shown by this study may explain the maintenance of AMF in salt marshes.
DOI: 10.1007/s00572-003-0247-4
PubMed: 12811643
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pubmed:12811643Le document en format XML
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Correia</name></author><author><name sortKey="Martins Loucao, M Amelia" sort="Martins Loucao, M Amelia" uniqKey="Martins Loucao M" first="M Amélia" last="Martins-Loução">M Amélia Martins-Loução</name></author></titleStmt><publicationStmt><idno type="wicri:source">PubMed</idno><date when="2004">2004</date><idno type="RBID">pubmed:12811643</idno><idno type="pmid">12811643</idno><idno type="doi">10.1007/s00572-003-0247-4</idno><idno type="wicri:Area/Main/Corpus">003912</idno><idno type="wicri:explorRef" wicri:stream="Main" wicri:step="Corpus" wicri:corpus="PubMed">003912</idno></publicationStmt><sourceDesc><biblStruct><analytic><title xml:lang="en">Arbuscular mycorrhizal fungal propagules in a salt marsh.</title><author><name sortKey="Carvalho, Luis M" sort="Carvalho, Luis M" uniqKey="Carvalho L" first="Luís M" last="Carvalho">Luís M. Carvalho</name><affiliation><nlm:affiliation>Departamento de Biologia Vegetal, Faculdade de Ciências de Lisboa, Centro de Ecologia e Biologia Vegetal, Bloco C2, Campo Grande, 1749-016, Lisbon, Portugal. luis.carvalho@fc.ul.pt</nlm:affiliation></affiliation></author><author><name sortKey="Correia, Patricia M" sort="Correia, Patricia M" uniqKey="Correia P" first="Patrícia M" last="Correia">Patrícia M. Correia</name></author><author><name sortKey="Martins Loucao, M Amelia" sort="Martins Loucao, M Amelia" uniqKey="Martins Loucao M" first="M Amélia" last="Martins-Loução">M Amélia Martins-Loução</name></author></analytic><series><title level="j">Mycorrhiza</title><idno type="ISSN">0940-6360</idno><imprint><date when="2004" type="published">2004</date></imprint></series></biblStruct></sourceDesc></fileDesc><profileDesc><textClass><keywords scheme="KwdEn" xml:lang="en"><term>Ecosystem (MeSH)</term><term>Fungi (physiology)</term><term>Mycorrhizae (physiology)</term><term>Soil (MeSH)</term><term>Spores, Fungal (physiology)</term></keywords><keywords scheme="MESH" type="chemical" xml:lang="en"><term>Soil</term></keywords><keywords scheme="MESH" qualifier="physiology" xml:lang="en"><term>Fungi</term><term>Mycorrhizae</term><term>Spores, Fungal</term></keywords><keywords scheme="MESH" xml:lang="en"><term>Ecosystem</term></keywords></textClass></profileDesc></teiHeader><front><div type="abstract" xml:lang="en">The tolerance of indigenous arbuscular mycorrhizal fungi (AMF) to stressful soil conditions and the relative contribution of spores of these fungi to plant colonization were examined in a Portuguese salt marsh. Glomus geosporum is dominant in this salt marsh. Using tetrazolium as a vital stain, a high proportion of field-collected spores were found to be metabolically active at all sampling dates. Spore germination tests showed that salt marsh spores were not affected by increasing levels of salinity, in contrast to two non-marsh spore isolates, and had a significantly higher ability to germinate under increased levels of salinity (20 per thousand) than in the absence of or at low salinity (10 per thousand). Germination of salt marsh spores was not affected by soil water levels above field capacity, in contrast to one of the two non-marsh spore isolates. For the evaluation of infectivity, a bioassay was established with undisturbed soil cores (containing all types of AM fungal propagules) and soil cores containing only spores as AM fungal propagules. Different types of propagules were able to initiate and to expand the root colonization of a native plant species, but spores were slower than mycelium and/or root fragments in colonizing host roots. The AM fungal adaptation shown by this study may explain the maintenance of AMF in salt marshes.</div></front></TEI><pubmed><MedlineCitation Status="MEDLINE" Owner="NLM"><PMID Version="1">12811643</PMID><DateCompleted><Year>2005</Year><Month>03</Month><Day>30</Day></DateCompleted><DateRevised><Year>2018</Year><Month>11</Month><Day>13</Day></DateRevised><Article PubModel="Print-Electronic"><Journal><ISSN IssnType="Print">0940-6360</ISSN><JournalIssue CitedMedium="Print"><Volume>14</Volume><Issue>3</Issue><PubDate><Year>2004</Year><Month>Jul</Month></PubDate></JournalIssue><Title>Mycorrhiza</Title><ISOAbbreviation>Mycorrhiza</ISOAbbreviation></Journal><ArticleTitle>Arbuscular mycorrhizal fungal propagules in a salt marsh.</ArticleTitle><Pagination><MedlinePgn>165-70</MedlinePgn></Pagination><Abstract><AbstractText>The tolerance of indigenous arbuscular mycorrhizal fungi (AMF) to stressful soil conditions and the relative contribution of spores of these fungi to plant colonization were examined in a Portuguese salt marsh. Glomus geosporum is dominant in this salt marsh. Using tetrazolium as a vital stain, a high proportion of field-collected spores were found to be metabolically active at all sampling dates. Spore germination tests showed that salt marsh spores were not affected by increasing levels of salinity, in contrast to two non-marsh spore isolates, and had a significantly higher ability to germinate under increased levels of salinity (20 per thousand) than in the absence of or at low salinity (10 per thousand). Germination of salt marsh spores was not affected by soil water levels above field capacity, in contrast to one of the two non-marsh spore isolates. For the evaluation of infectivity, a bioassay was established with undisturbed soil cores (containing all types of AM fungal propagules) and soil cores containing only spores as AM fungal propagules. Different types of propagules were able to initiate and to expand the root colonization of a native plant species, but spores were slower than mycelium and/or root fragments in colonizing host roots. The AM fungal adaptation shown by this study may explain the maintenance of AMF in salt marshes.</AbstractText></Abstract><AuthorList CompleteYN="Y"><Author ValidYN="Y"><LastName>Carvalho</LastName><ForeName>Luís M</ForeName><Initials>LM</Initials><AffiliationInfo><Affiliation>Departamento de Biologia Vegetal, Faculdade de Ciências de Lisboa, Centro de Ecologia e Biologia Vegetal, Bloco C2, Campo Grande, 1749-016, Lisbon, Portugal. luis.carvalho@fc.ul.pt</Affiliation></AffiliationInfo></Author><Author ValidYN="Y"><LastName>Correia</LastName><ForeName>Patrícia M</ForeName><Initials>PM</Initials></Author><Author ValidYN="Y"><LastName>Martins-Loução</LastName><ForeName>M Amélia</ForeName><Initials>MA</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>2003</Year><Month>06</Month><Day>13</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></ChemicalList><CitationSubset>IM</CitationSubset><MeshHeadingList><MeshHeading><DescriptorName UI="D017753" MajorTopicYN="N">Ecosystem</DescriptorName></MeshHeading><MeshHeading><DescriptorName UI="D005658" MajorTopicYN="N">Fungi</DescriptorName><QualifierName UI="Q000502" MajorTopicYN="Y">physiology</QualifierName></MeshHeading><MeshHeading><DescriptorName UI="D038821" MajorTopicYN="N">Mycorrhizae</DescriptorName><QualifierName UI="Q000502" MajorTopicYN="Y">physiology</QualifierName></MeshHeading><MeshHeading><DescriptorName UI="D012987" MajorTopicYN="N">Soil</DescriptorName></MeshHeading><MeshHeading><DescriptorName UI="D013172" MajorTopicYN="N">Spores, Fungal</DescriptorName><QualifierName UI="Q000502" MajorTopicYN="N">physiology</QualifierName></MeshHeading></MeshHeadingList></MedlineCitation><PubmedData><History><PubMedPubDate PubStatus="received"><Year>2003</Year><Month>09</Month><Day>10</Day></PubMedPubDate><PubMedPubDate PubStatus="accepted"><Year>2003</Year><Month>05</Month><Day>06</Day></PubMedPubDate><PubMedPubDate PubStatus="pubmed"><Year>2003</Year><Month>6</Month><Day>18</Day><Hour>5</Hour><Minute>0</Minute></PubMedPubDate><PubMedPubDate PubStatus="medline"><Year>2005</Year><Month>3</Month><Day>31</Day><Hour>9</Hour><Minute>0</Minute></PubMedPubDate><PubMedPubDate PubStatus="entrez"><Year>2003</Year><Month>6</Month><Day>18</Day><Hour>5</Hour><Minute>0</Minute></PubMedPubDate></History><PublicationStatus>ppublish</PublicationStatus><ArticleIdList><ArticleId IdType="pubmed">12811643</ArticleId><ArticleId IdType="doi">10.1007/s00572-003-0247-4</ArticleId></ArticleIdList><ReferenceList><Reference><Citation>Mycorrhiza. 2002 Aug;12(4):181-4</Citation><ArticleIdList><ArticleId IdType="pubmed">12189472</ArticleId></ArticleIdList></Reference><Reference><Citation>Oecologia. 1995 Jul;103(1):17-23</Citation><ArticleIdList><ArticleId IdType="pubmed">28306940</ArticleId></ArticleIdList></Reference><Reference><Citation>Mycorrhiza. 2002 Aug;12(4):199-211</Citation><ArticleIdList><ArticleId IdType="pubmed">12189475</ArticleId></ArticleIdList></Reference><Reference><Citation>Mycorrhiza. 2001 Dec;11(6):303-9</Citation><ArticleIdList><ArticleId IdType="pubmed">24549351</ArticleId></ArticleIdList></Reference><Reference><Citation>Appl Environ Microbiol. 1996 Mar;62(3):842-7</Citation><ArticleIdList><ArticleId IdType="pubmed">16535273</ArticleId></ArticleIdList></Reference></ReferenceList></PubmedData></pubmed></record>Pour manipuler ce document sous Unix (Dilib)
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