Photobiont association and genetic diversity of the optionally lichenized fungus Schizoxylon albescens.
Identifieur interne : 002F87 ( Main/Corpus ); précédent : 002F86; suivant : 002F88Photobiont association and genetic diversity of the optionally lichenized fungus Schizoxylon albescens.
Auteurs : Lucia Muggia ; Elisabeth Baloch ; Edith Stabentheiner ; Martin Grube ; Mats WedinSource :
- FEMS microbiology ecology [ 1574-6941 ] ; 2011.
English descriptors
- KwdEn :
- Ascomycota (classification), Ascomycota (genetics), Ascomycota (isolation & purification), Base Sequence (MeSH), Chlorophyta (classification), Chlorophyta (genetics), Genes, Fungal (MeSH), Genes, Plant (MeSH), Genetic Variation (MeSH), Lichens (classification), Lichens (genetics), Lichens (growth & development), Microscopy, Electron, Scanning (MeSH), Molecular Sequence Data (MeSH), Phylogeny (MeSH), Populus (microbiology), Populus (physiology), Sweden (MeSH), Symbiosis (MeSH).
- MESH :
- geographic : Sweden.
- classification : Ascomycota, Chlorophyta, Lichens.
- genetics : Ascomycota, Chlorophyta, Lichens.
- growth & development : Lichens.
- isolation & purification : Ascomycota.
- microbiology : Populus.
- physiology : Populus.
- Base Sequence, Genes, Fungal, Genes, Plant, Genetic Variation, Microscopy, Electron, Scanning, Molecular Sequence Data, Phylogeny, Symbiosis.
Abstract
The fungus Schizoxylon albescens occurs both as lichen and as saprobe. Lichenized colonies grow on the bark of Populus tremula; saprotrophic morphs grow on dead Populus branches. We wanted to (1) test whether lichenized and saprotrophic S. albescens are genetically distinct, (2) investigate photobiont association and diversity, (3) investigate the interactions between fungi and algae that occur during co-cultivation and (4) test whether Schizoxylon shows algal selectivity during lichenization. Fungal and algal genetic diversity were investigated for three markers. Algae from lichenized thalli were isolated in axenic cultures, and isolate sequence diversity was compared with algae amplified directly from thallus fragments. Co-culture experiments of fungi and algae were performed to study the morphological interaction patterns. Two distinct phylogenetic units are revealed in S. albescens, which are interpreted as phenotypically cryptic species. The algae are related to Coccomyxa and Pseudococcomyxa, and form two distinct sister clades separating samples isolated in cultures from those amplified directly from thallus fragments, indicating that more easily cultured strains of algae are not necessarily major components of the lichens. Schizoxylon albescens interacts with isolated algal strains, similar to fungal-Coccomyxa symbioses in nature. As the system is maintained without difficulty in culture, it can potentially be an easily controlled lichen symbiosis study system under laboratory conditions.
DOI: 10.1111/j.1574-6941.2010.01002.x
PubMed: 21133956
Links to Exploration step
pubmed:21133956Le document en format XML
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Lichenized colonies grow on the bark of Populus tremula; saprotrophic morphs grow on dead Populus branches. We wanted to (1) test whether lichenized and saprotrophic S. albescens are genetically distinct, (2) investigate photobiont association and diversity, (3) investigate the interactions between fungi and algae that occur during co-cultivation and (4) test whether Schizoxylon shows algal selectivity during lichenization. Fungal and algal genetic diversity were investigated for three markers. Algae from lichenized thalli were isolated in axenic cultures, and isolate sequence diversity was compared with algae amplified directly from thallus fragments. Co-culture experiments of fungi and algae were performed to study the morphological interaction patterns. Two distinct phylogenetic units are revealed in S. albescens, which are interpreted as phenotypically cryptic species. The algae are related to Coccomyxa and Pseudococcomyxa, and form two distinct sister clades separating samples isolated in cultures from those amplified directly from thallus fragments, indicating that more easily cultured strains of algae are not necessarily major components of the lichens. Schizoxylon albescens interacts with isolated algal strains, similar to fungal-Coccomyxa symbioses in nature. As the system is maintained without difficulty in culture, it can potentially be an easily controlled lichen symbiosis study system under laboratory conditions.</div></front></TEI><pubmed><MedlineCitation Status="MEDLINE" Owner="NLM"><PMID Version="1">21133956</PMID><DateCompleted><Year>2011</Year><Month>02</Month><Day>18</Day></DateCompleted><DateRevised><Year>2011</Year><Month>01</Month><Day>05</Day></DateRevised><Article PubModel="Print-Electronic"><Journal><ISSN IssnType="Electronic">1574-6941</ISSN><JournalIssue CitedMedium="Internet"><Volume>75</Volume><Issue>2</Issue><PubDate><Year>2011</Year><Month>Feb</Month></PubDate></JournalIssue><Title>FEMS microbiology ecology</Title><ISOAbbreviation>FEMS Microbiol Ecol</ISOAbbreviation></Journal><ArticleTitle>Photobiont association and genetic diversity of the optionally lichenized fungus Schizoxylon albescens.</ArticleTitle><Pagination><MedlinePgn>255-72</MedlinePgn></Pagination><ELocationID EIdType="doi" ValidYN="Y">10.1111/j.1574-6941.2010.01002.x</ELocationID><Abstract><AbstractText>The fungus Schizoxylon albescens occurs both as lichen and as saprobe. Lichenized colonies grow on the bark of Populus tremula; saprotrophic morphs grow on dead Populus branches. We wanted to (1) test whether lichenized and saprotrophic S. albescens are genetically distinct, (2) investigate photobiont association and diversity, (3) investigate the interactions between fungi and algae that occur during co-cultivation and (4) test whether Schizoxylon shows algal selectivity during lichenization. Fungal and algal genetic diversity were investigated for three markers. Algae from lichenized thalli were isolated in axenic cultures, and isolate sequence diversity was compared with algae amplified directly from thallus fragments. Co-culture experiments of fungi and algae were performed to study the morphological interaction patterns. Two distinct phylogenetic units are revealed in S. albescens, which are interpreted as phenotypically cryptic species. The algae are related to Coccomyxa and Pseudococcomyxa, and form two distinct sister clades separating samples isolated in cultures from those amplified directly from thallus fragments, indicating that more easily cultured strains of algae are not necessarily major components of the lichens. Schizoxylon albescens interacts with isolated algal strains, similar to fungal-Coccomyxa symbioses in nature. As the system is maintained without difficulty in culture, it can potentially be an easily controlled lichen symbiosis study system under laboratory conditions.</AbstractText><CopyrightInformation>© 2010 Federation of European Microbiological Societies. Published by Blackwell Publishing Ltd. All rights reserved.</CopyrightInformation></Abstract><AuthorList CompleteYN="Y"><Author ValidYN="Y"><LastName>Muggia</LastName><ForeName>Lucia</ForeName><Initials>L</Initials><AffiliationInfo><Affiliation>Institute of Plant Sciences, Karl-Franzens-University Graz, Graz, Austria. lucia.muggia@uni-graz.at</Affiliation></AffiliationInfo></Author><Author ValidYN="Y"><LastName>Baloch</LastName><ForeName>Elisabeth</ForeName><Initials>E</Initials></Author><Author ValidYN="Y"><LastName>Stabentheiner</LastName><ForeName>Edith</ForeName><Initials>E</Initials></Author><Author ValidYN="Y"><LastName>Grube</LastName><ForeName>Martin</ForeName><Initials>M</Initials></Author><Author ValidYN="Y"><LastName>Wedin</LastName><ForeName>Mats</ForeName><Initials>M</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>2010</Year><Month>12</Month><Day>06</Day></ArticleDate></Article><MedlineJournalInfo><Country>England</Country><MedlineTA>FEMS Microbiol Ecol</MedlineTA><NlmUniqueID>8901229</NlmUniqueID><ISSNLinking>0168-6496</ISSNLinking></MedlineJournalInfo><CitationSubset>IM</CitationSubset><MeshHeadingList><MeshHeading><DescriptorName UI="D001203" MajorTopicYN="N">Ascomycota</DescriptorName><QualifierName UI="Q000145" MajorTopicYN="N">classification</QualifierName><QualifierName UI="Q000235" MajorTopicYN="Y">genetics</QualifierName><QualifierName UI="Q000302" MajorTopicYN="N">isolation & purification</QualifierName></MeshHeading><MeshHeading><DescriptorName UI="D001483" MajorTopicYN="N">Base Sequence</DescriptorName></MeshHeading><MeshHeading><DescriptorName UI="D000460" MajorTopicYN="N">Chlorophyta</DescriptorName><QualifierName UI="Q000145" MajorTopicYN="N">classification</QualifierName><QualifierName UI="Q000235" MajorTopicYN="Y">genetics</QualifierName></MeshHeading><MeshHeading><DescriptorName UI="D005800" MajorTopicYN="N">Genes, Fungal</DescriptorName></MeshHeading><MeshHeading><DescriptorName UI="D017343" MajorTopicYN="N">Genes, Plant</DescriptorName></MeshHeading><MeshHeading><DescriptorName UI="D014644" MajorTopicYN="N">Genetic Variation</DescriptorName></MeshHeading><MeshHeading><DescriptorName UI="D008011" MajorTopicYN="N">Lichens</DescriptorName><QualifierName UI="Q000145" MajorTopicYN="N">classification</QualifierName><QualifierName UI="Q000235" MajorTopicYN="N">genetics</QualifierName><QualifierName UI="Q000254" MajorTopicYN="Y">growth & development</QualifierName></MeshHeading><MeshHeading><DescriptorName UI="D008855" MajorTopicYN="N">Microscopy, Electron, Scanning</DescriptorName></MeshHeading><MeshHeading><DescriptorName UI="D008969" MajorTopicYN="N">Molecular Sequence Data</DescriptorName></MeshHeading><MeshHeading><DescriptorName UI="D010802" MajorTopicYN="N">Phylogeny</DescriptorName></MeshHeading><MeshHeading><DescriptorName UI="D032107" MajorTopicYN="N">Populus</DescriptorName><QualifierName UI="Q000382" MajorTopicYN="Y">microbiology</QualifierName><QualifierName UI="Q000502" MajorTopicYN="N">physiology</QualifierName></MeshHeading><MeshHeading><DescriptorName UI="D013548" MajorTopicYN="N" Type="Geographic">Sweden</DescriptorName></MeshHeading><MeshHeading><DescriptorName UI="D013559" MajorTopicYN="N">Symbiosis</DescriptorName></MeshHeading></MeshHeadingList></MedlineCitation><PubmedData><History><PubMedPubDate PubStatus="entrez"><Year>2010</Year><Month>12</Month><Day>8</Day><Hour>6</Hour><Minute>0</Minute></PubMedPubDate><PubMedPubDate PubStatus="pubmed"><Year>2010</Year><Month>12</Month><Day>8</Day><Hour>6</Hour><Minute>0</Minute></PubMedPubDate><PubMedPubDate PubStatus="medline"><Year>2011</Year><Month>2</Month><Day>22</Day><Hour>6</Hour><Minute>0</Minute></PubMedPubDate></History><PublicationStatus>ppublish</PublicationStatus><ArticleIdList><ArticleId IdType="pubmed">21133956</ArticleId><ArticleId IdType="doi">10.1111/j.1574-6941.2010.01002.x</ArticleId></ArticleIdList></PubmedData></pubmed></record>Pour manipuler ce document sous Unix (Dilib)
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