Hyphal healing mechanism in the arbuscular mycorrhizal fungi Scutellospora reticulata and Glomus clarum differs in response to severe physical stress.
Identifieur interne : 003040 ( Main/Corpus ); précédent : 003039; suivant : 003041Hyphal healing mechanism in the arbuscular mycorrhizal fungi Scutellospora reticulata and Glomus clarum differs in response to severe physical stress.
Auteurs : Ivan Enrique De La Providencia ; Félix Fernández ; Stéphane DeclerckSource :
- FEMS microbiology letters [ 0378-1097 ] ; 2007.
English descriptors
- KwdEn :
- MESH :
- classification : Mycorrhizae.
- growth & development : Mycorrhizae.
- physiology : Hyphae, Mycorrhizae.
- ultrastructure : Hyphae, Mycorrhizae.
- Heat-Shock Response.
Abstract
The hyphal healing mechanism (HHM) has been shown to differ between Gigasporaceae and Glomeraceae. However, this process has not been considered under (severe) physical stress conditions. Scutellospora reticulata and Glomus clarum strains were cultured monoxenically. The impact of long distance separating cut extremities of hyphae and of multiple injuries within hyphae on the HHM was monitored. For long distances (>5000 microm) separating cut extremities, hyphae healing was observed in half the cases in S. reticulata and was absent in G. clarum. For multiple-injured hyphae, the HHM was always oriented towards the complete recovery of hyphae integrity in S. reticulata, while in G. clarum, the growing hyphal tips (GHTs) could indifferently reconnect cut sections, by-pass cut sections or develop into the environment. Hyphae behaviour under severe physical stress clearly differentiated S. reticulata from G. clarum, suggesting that both fungi have developed different strategies for colony growth to survive under adverse conditions.
DOI: 10.1111/j.1574-6968.2006.00572.x
PubMed: 17263854
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pubmed:17263854Le document en format XML
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However, this process has not been considered under (severe) physical stress conditions. Scutellospora reticulata and Glomus clarum strains were cultured monoxenically. The impact of long distance separating cut extremities of hyphae and of multiple injuries within hyphae on the HHM was monitored. For long distances (>5000 microm) separating cut extremities, hyphae healing was observed in half the cases in S. reticulata and was absent in G. clarum. For multiple-injured hyphae, the HHM was always oriented towards the complete recovery of hyphae integrity in S. reticulata, while in G. clarum, the growing hyphal tips (GHTs) could indifferently reconnect cut sections, by-pass cut sections or develop into the environment. Hyphae behaviour under severe physical stress clearly differentiated S. reticulata from G. clarum, suggesting that both fungi have developed different strategies for colony growth to survive under adverse conditions.</div></front></TEI><pubmed><MedlineCitation Status="MEDLINE" Owner="NLM"><PMID Version="1">17263854</PMID><DateCompleted><Year>2007</Year><Month>03</Month><Day>16</Day></DateCompleted><DateRevised><Year>2007</Year><Month>01</Month><Day>31</Day></DateRevised><Article PubModel="Print"><Journal><ISSN IssnType="Print">0378-1097</ISSN><JournalIssue CitedMedium="Print"><Volume>268</Volume><Issue>1</Issue><PubDate><Year>2007</Year><Month>Mar</Month></PubDate></JournalIssue><Title>FEMS microbiology letters</Title><ISOAbbreviation>FEMS Microbiol Lett</ISOAbbreviation></Journal><ArticleTitle>Hyphal healing mechanism in the arbuscular mycorrhizal fungi Scutellospora reticulata and Glomus clarum differs in response to severe physical stress.</ArticleTitle><Pagination><MedlinePgn>120-5</MedlinePgn></Pagination><Abstract><AbstractText>The hyphal healing mechanism (HHM) has been shown to differ between Gigasporaceae and Glomeraceae. However, this process has not been considered under (severe) physical stress conditions. Scutellospora reticulata and Glomus clarum strains were cultured monoxenically. The impact of long distance separating cut extremities of hyphae and of multiple injuries within hyphae on the HHM was monitored. For long distances (>5000 microm) separating cut extremities, hyphae healing was observed in half the cases in S. reticulata and was absent in G. clarum. For multiple-injured hyphae, the HHM was always oriented towards the complete recovery of hyphae integrity in S. reticulata, while in G. clarum, the growing hyphal tips (GHTs) could indifferently reconnect cut sections, by-pass cut sections or develop into the environment. Hyphae behaviour under severe physical stress clearly differentiated S. reticulata from G. clarum, suggesting that both fungi have developed different strategies for colony growth to survive under adverse conditions.</AbstractText></Abstract><AuthorList CompleteYN="Y"><Author ValidYN="Y"><LastName>de la Providencia</LastName><ForeName>Ivan Enrique</ForeName><Initials>IE</Initials><AffiliationInfo><Affiliation>Instituto Nacional de Ciencias Agricolas, San José de las lajas, La Habana, Cuba.</Affiliation></AffiliationInfo></Author><Author ValidYN="Y"><LastName>Fernández</LastName><ForeName>Félix</ForeName><Initials>F</Initials></Author><Author ValidYN="Y"><LastName>Declerck</LastName><ForeName>Stéphane</ForeName><Initials>S</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>FEMS Microbiol Lett</MedlineTA><NlmUniqueID>7705721</NlmUniqueID><ISSNLinking>0378-1097</ISSNLinking></MedlineJournalInfo><CitationSubset>IM</CitationSubset><MeshHeadingList><MeshHeading><DescriptorName UI="D018869" MajorTopicYN="Y">Heat-Shock Response</DescriptorName></MeshHeading><MeshHeading><DescriptorName UI="D025301" MajorTopicYN="N">Hyphae</DescriptorName><QualifierName UI="Q000502" MajorTopicYN="Y">physiology</QualifierName><QualifierName UI="Q000648" MajorTopicYN="N">ultrastructure</QualifierName></MeshHeading><MeshHeading><DescriptorName UI="D038821" MajorTopicYN="N">Mycorrhizae</DescriptorName><QualifierName UI="Q000145" MajorTopicYN="Y">classification</QualifierName><QualifierName UI="Q000254" MajorTopicYN="N">growth & development</QualifierName><QualifierName UI="Q000502" MajorTopicYN="Y">physiology</QualifierName><QualifierName UI="Q000648" MajorTopicYN="N">ultrastructure</QualifierName></MeshHeading></MeshHeadingList></MedlineCitation><PubmedData><History><PubMedPubDate PubStatus="pubmed"><Year>2007</Year><Month>2</Month><Day>1</Day><Hour>9</Hour><Minute>0</Minute></PubMedPubDate><PubMedPubDate PubStatus="medline"><Year>2007</Year><Month>3</Month><Day>17</Day><Hour>9</Hour><Minute>0</Minute></PubMedPubDate><PubMedPubDate PubStatus="entrez"><Year>2007</Year><Month>2</Month><Day>1</Day><Hour>9</Hour><Minute>0</Minute></PubMedPubDate></History><PublicationStatus>ppublish</PublicationStatus><ArticleIdList><ArticleId IdType="pubmed">17263854</ArticleId><ArticleId IdType="pii">FML572</ArticleId><ArticleId IdType="doi">10.1111/j.1574-6968.2006.00572.x</ArticleId></ArticleIdList></PubmedData></pubmed></record>Pour manipuler ce document sous Unix (Dilib)
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