A dorsiventral mycorrhizal root in the achlorophyllous Sciaphila polygyna (Triuridaceae).
Identifieur interne : 003890 ( Main/Corpus ); précédent : 003889; suivant : 003891A dorsiventral mycorrhizal root in the achlorophyllous Sciaphila polygyna (Triuridaceae).
Auteurs : Stephan ImhofSource :
- Mycorrhiza [ 0940-6360 ] ; 2003.
English descriptors
- KwdEn :
- MESH :
- microbiology : Pandanaceae, Plant Roots.
- ultrastructure : Hyphae, Mycorrhizae, Pandanaceae, Plant Roots.
- Microscopy, Electron.
Abstract
The star-like root system of the achlorophyllous Sciaphila polygyna (Triuridaceae) consists of roots up to 1.4 mm thick and 1 cm long seemingly radiating from a single origin. Internally, the roots show a bilateral symmetry when viewed in cross-section: the third root cell layer contains rather loose coils of the aseptate mycorrhizal fungus from the dorsal to the lateral sides, in contrast to the extremely dense coils of thin hyphae in its ventral part. Additionally, the hyphae develop vesicle-like swellings mainly in the central part of the dorsal side as well as the lateral parts of the third layer. The fourth root layer is anatomically heteromorphic, having exceptionally large cells, reaching up to 320 x 130 microm in size (giant cells), in the lower lateral parts. The root-colonizing hyphae only degenerate in the fourth layer, most readily in the giant cells, where they may swell to 24 microm in diameter, collapse and end as amorphous clumps. Hyphae in the third layer keep their definite structure. The structures are interpreted to be the result of a dynamic reaction of the root to the actual fungal penetration points in order to maximize the benefit from the subsequent colonization by compartmentation of the root tissue. The function of the third layer is to host the fungus and keep it alive within its cells, while mainly the giant cells serve for its digestion. Many indications suggest an arbuscular mycorrhiza for this association. Similarities and differences to other myco-heterotrophic species are discussed.
DOI: 10.1007/s00572-003-0255-4
PubMed: 12856198
Links to Exploration step
pubmed:12856198Le document en format XML
<record><TEI><teiHeader><fileDesc><titleStmt><title xml:lang="en">A dorsiventral mycorrhizal root in the achlorophyllous Sciaphila polygyna (Triuridaceae).</title><author><name sortKey="Imhof, Stephan" sort="Imhof, Stephan" uniqKey="Imhof S" first="Stephan" last="Imhof">Stephan Imhof</name><affiliation><nlm:affiliation>Spezielle Botanik und Mykologie, Fachbereich Biologie, Philipps-Universität, 35032, Marburg, Germany. imhof@staff.uni-marburg.de</nlm:affiliation></affiliation></author></titleStmt><publicationStmt><idno type="wicri:source">PubMed</idno><date when="2003">2003</date><idno type="RBID">pubmed:12856198</idno><idno type="pmid">12856198</idno><idno type="doi">10.1007/s00572-003-0255-4</idno><idno type="wicri:Area/Main/Corpus">003890</idno><idno type="wicri:explorRef" wicri:stream="Main" wicri:step="Corpus" wicri:corpus="PubMed">003890</idno></publicationStmt><sourceDesc><biblStruct><analytic><title xml:lang="en">A dorsiventral mycorrhizal root in the achlorophyllous Sciaphila polygyna (Triuridaceae).</title><author><name sortKey="Imhof, Stephan" sort="Imhof, Stephan" uniqKey="Imhof S" first="Stephan" last="Imhof">Stephan Imhof</name><affiliation><nlm:affiliation>Spezielle Botanik und Mykologie, Fachbereich Biologie, Philipps-Universität, 35032, Marburg, Germany. imhof@staff.uni-marburg.de</nlm:affiliation></affiliation></author></analytic><series><title level="j">Mycorrhiza</title><idno type="ISSN">0940-6360</idno><imprint><date when="2003" type="published">2003</date></imprint></series></biblStruct></sourceDesc></fileDesc><profileDesc><textClass><keywords scheme="KwdEn" xml:lang="en"><term>Hyphae (ultrastructure)</term><term>Microscopy, Electron (MeSH)</term><term>Mycorrhizae (ultrastructure)</term><term>Pandanaceae (microbiology)</term><term>Pandanaceae (ultrastructure)</term><term>Plant Roots (microbiology)</term><term>Plant Roots (ultrastructure)</term></keywords><keywords scheme="MESH" qualifier="microbiology" xml:lang="en"><term>Pandanaceae</term><term>Plant Roots</term></keywords><keywords scheme="MESH" qualifier="ultrastructure" xml:lang="en"><term>Hyphae</term><term>Mycorrhizae</term><term>Pandanaceae</term><term>Plant Roots</term></keywords><keywords scheme="MESH" xml:lang="en"><term>Microscopy, Electron</term></keywords></textClass></profileDesc></teiHeader><front><div type="abstract" xml:lang="en">The star-like root system of the achlorophyllous Sciaphila polygyna (Triuridaceae) consists of roots up to 1.4 mm thick and 1 cm long seemingly radiating from a single origin. Internally, the roots show a bilateral symmetry when viewed in cross-section: the third root cell layer contains rather loose coils of the aseptate mycorrhizal fungus from the dorsal to the lateral sides, in contrast to the extremely dense coils of thin hyphae in its ventral part. Additionally, the hyphae develop vesicle-like swellings mainly in the central part of the dorsal side as well as the lateral parts of the third layer. The fourth root layer is anatomically heteromorphic, having exceptionally large cells, reaching up to 320 x 130 microm in size (giant cells), in the lower lateral parts. The root-colonizing hyphae only degenerate in the fourth layer, most readily in the giant cells, where they may swell to 24 microm in diameter, collapse and end as amorphous clumps. Hyphae in the third layer keep their definite structure. The structures are interpreted to be the result of a dynamic reaction of the root to the actual fungal penetration points in order to maximize the benefit from the subsequent colonization by compartmentation of the root tissue. The function of the third layer is to host the fungus and keep it alive within its cells, while mainly the giant cells serve for its digestion. Many indications suggest an arbuscular mycorrhiza for this association. Similarities and differences to other myco-heterotrophic species are discussed.</div></front></TEI><pubmed><MedlineCitation Status="MEDLINE" Owner="NLM"><PMID Version="1">12856198</PMID><DateCompleted><Year>2005</Year><Month>03</Month><Day>23</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>13</Volume><Issue>6</Issue><PubDate><Year>2003</Year><Month>Dec</Month></PubDate></JournalIssue><Title>Mycorrhiza</Title><ISOAbbreviation>Mycorrhiza</ISOAbbreviation></Journal><ArticleTitle>A dorsiventral mycorrhizal root in the achlorophyllous Sciaphila polygyna (Triuridaceae).</ArticleTitle><Pagination><MedlinePgn>327-32</MedlinePgn></Pagination><Abstract><AbstractText>The star-like root system of the achlorophyllous Sciaphila polygyna (Triuridaceae) consists of roots up to 1.4 mm thick and 1 cm long seemingly radiating from a single origin. Internally, the roots show a bilateral symmetry when viewed in cross-section: the third root cell layer contains rather loose coils of the aseptate mycorrhizal fungus from the dorsal to the lateral sides, in contrast to the extremely dense coils of thin hyphae in its ventral part. Additionally, the hyphae develop vesicle-like swellings mainly in the central part of the dorsal side as well as the lateral parts of the third layer. The fourth root layer is anatomically heteromorphic, having exceptionally large cells, reaching up to 320 x 130 microm in size (giant cells), in the lower lateral parts. The root-colonizing hyphae only degenerate in the fourth layer, most readily in the giant cells, where they may swell to 24 microm in diameter, collapse and end as amorphous clumps. Hyphae in the third layer keep their definite structure. The structures are interpreted to be the result of a dynamic reaction of the root to the actual fungal penetration points in order to maximize the benefit from the subsequent colonization by compartmentation of the root tissue. The function of the third layer is to host the fungus and keep it alive within its cells, while mainly the giant cells serve for its digestion. Many indications suggest an arbuscular mycorrhiza for this association. Similarities and differences to other myco-heterotrophic species are discussed.</AbstractText></Abstract><AuthorList CompleteYN="Y"><Author ValidYN="Y"><LastName>Imhof</LastName><ForeName>Stephan</ForeName><Initials>S</Initials><AffiliationInfo><Affiliation>Spezielle Botanik und Mykologie, Fachbereich Biologie, Philipps-Universität, 35032, Marburg, Germany. imhof@staff.uni-marburg.de</Affiliation></AffiliationInfo></Author></AuthorList><Language>eng</Language><PublicationTypeList><PublicationType UI="D016428">Journal Article</PublicationType></PublicationTypeList><ArticleDate DateType="Electronic"><Year>2003</Year><Month>07</Month><Day>10</Day></ArticleDate></Article><MedlineJournalInfo><Country>Germany</Country><MedlineTA>Mycorrhiza</MedlineTA><NlmUniqueID>100955036</NlmUniqueID><ISSNLinking>0940-6360</ISSNLinking></MedlineJournalInfo><CitationSubset>IM</CitationSubset><MeshHeadingList><MeshHeading><DescriptorName UI="D025301" MajorTopicYN="N">Hyphae</DescriptorName><QualifierName UI="Q000648" MajorTopicYN="N">ultrastructure</QualifierName></MeshHeading><MeshHeading><DescriptorName UI="D008854" MajorTopicYN="N">Microscopy, Electron</DescriptorName></MeshHeading><MeshHeading><DescriptorName UI="D038821" MajorTopicYN="N">Mycorrhizae</DescriptorName><QualifierName UI="Q000648" MajorTopicYN="Y">ultrastructure</QualifierName></MeshHeading><MeshHeading><DescriptorName UI="D031673" MajorTopicYN="N">Pandanaceae</DescriptorName><QualifierName UI="Q000382" MajorTopicYN="Y">microbiology</QualifierName><QualifierName UI="Q000648" MajorTopicYN="N">ultrastructure</QualifierName></MeshHeading><MeshHeading><DescriptorName UI="D018517" MajorTopicYN="N">Plant Roots</DescriptorName><QualifierName UI="Q000382" MajorTopicYN="Y">microbiology</QualifierName><QualifierName UI="Q000648" MajorTopicYN="N">ultrastructure</QualifierName></MeshHeading></MeshHeadingList></MedlineCitation><PubmedData><History><PubMedPubDate PubStatus="received"><Year>2002</Year><Month>10</Month><Day>20</Day></PubMedPubDate><PubMedPubDate PubStatus="accepted"><Year>2003</Year><Month>05</Month><Day>23</Day></PubMedPubDate><PubMedPubDate PubStatus="pubmed"><Year>2003</Year><Month>7</Month><Day>12</Day><Hour>5</Hour><Minute>0</Minute></PubMedPubDate><PubMedPubDate PubStatus="medline"><Year>2005</Year><Month>3</Month><Day>24</Day><Hour>9</Hour><Minute>0</Minute></PubMedPubDate><PubMedPubDate PubStatus="entrez"><Year>2003</Year><Month>7</Month><Day>12</Day><Hour>5</Hour><Minute>0</Minute></PubMedPubDate></History><PublicationStatus>ppublish</PublicationStatus><ArticleIdList><ArticleId IdType="pubmed">12856198</ArticleId><ArticleId IdType="doi">10.1007/s00572-003-0255-4</ArticleId></ArticleIdList><ReferenceList><Reference><Citation>Rev Biol Trop. 2001 Mar;49(1):239-47</Citation><ArticleIdList><ArticleId IdType="pubmed">11795152</ArticleId></ArticleIdList></Reference><Reference><Citation>Nature. 2002 Sep 26;419(6905):389-92</Citation><ArticleIdList><ArticleId IdType="pubmed">12353033</ArticleId></ArticleIdList></Reference></ReferenceList></PubmedData></pubmed></record>Pour manipuler ce document sous Unix (Dilib)
EXPLOR_STEP=$WICRI_ROOT/Bois/explor/MycorrhizaeV1/Data/Main/Corpus
HfdSelect -h $EXPLOR_STEP/biblio.hfd -nk 003890 | SxmlIndent | more
Ou
HfdSelect -h $EXPLOR_AREA/Data/Main/Corpus/biblio.hfd -nk 003890 | SxmlIndent | more
Pour mettre un lien sur cette page dans le réseau Wicri
{{Explor lien
|wiki= Bois
|area= MycorrhizaeV1
|flux= Main
|étape= Corpus
|type= RBID
|clé= pubmed:12856198
|texte= A dorsiventral mycorrhizal root in the achlorophyllous Sciaphila polygyna (Triuridaceae).
}}
Pour générer des pages wiki
HfdIndexSelect -h $EXPLOR_AREA/Data/Main/Corpus/RBID.i -Sk "pubmed:12856198" \
| HfdSelect -Kh $EXPLOR_AREA/Data/Main/Corpus/biblio.hfd \
| NlmPubMed2Wicri -a MycorrhizaeV1
| This area was generated with Dilib version V0.6.37. |  |