Sebacinales form ectendomycorrhizas with Cavendishia nobilis, a member of the Andean clade of Ericaceae, in the mountain rain forest of southern Ecuador.
Identifieur interne : 003189 ( Main/Exploration ); précédent : 003188; suivant : 003190Sebacinales form ectendomycorrhizas with Cavendishia nobilis, a member of the Andean clade of Ericaceae, in the mountain rain forest of southern Ecuador.
Auteurs : Sabrina Setaro [Allemagne] ; Michael Weiss ; Franz Oberwinkler ; Ingrid KottkeSource :
- The New phytologist [ 0028-646X ] ; 2006.
Descripteurs français
- KwdFr :
- Climat tropical (MeSH), Ericaceae (microbiologie), Gènes fongiques (MeSH), Mycorhizes (classification), Mycorhizes (génétique), Mycorhizes (isolement et purification), Mycorhizes (ultrastructure), Phylogenèse (MeSH), Pluie (MeSH), Racines de plante (microbiologie), Racines de plante (ultrastructure), Symbiose (MeSH), Écosystème (MeSH), Équateur (MeSH).
- MESH :
- génétique : Mycorhizes.
- isolement et purification : Mycorhizes.
- microbiologie : Ericaceae, Racines de plante.
- Climat tropical, Gènes fongiques, Mycorhizes, Phylogenèse, Pluie, Racines de plante, Symbiose, Écosystème, Équateur.
- Wicri :
- geographic : Équateur.
English descriptors
- KwdEn :
- Ecosystem (MeSH), Ecuador (MeSH), Ericaceae (microbiology), Genes, Fungal (MeSH), Mycorrhizae (classification), Mycorrhizae (genetics), Mycorrhizae (isolation & purification), Mycorrhizae (ultrastructure), Phylogeny (MeSH), Plant Roots (microbiology), Plant Roots (ultrastructure), Rain (MeSH), Symbiosis (MeSH), Tropical Climate (MeSH).
- MESH :
- geographic : Ecuador.
- classification : Mycorrhizae.
- genetics : Mycorrhizae.
- isolation & purification : Mycorrhizae.
- microbiology : Ericaceae, Plant Roots.
- ultrastructure : Mycorrhizae, Plant Roots.
- Ecosystem, Genes, Fungal, Phylogeny, Rain, Symbiosis, Tropical Climate.
Abstract
Cavendishia nobilis var. capitata is an endemic member of the Ericaceae growing as a hemiepiphyte in the tropical mountain rain forest of southern Ecuador. Mycorrhizas were collected from 20 individuals along an altitudinal gradient between 1850 and 2300 m. Transmission electron microscopy was used to study the symbiotic association in detail, and phylogenetic analyses based on nuclear rDNA coding for the ribosomal large subunit (nucLSU) were carried out to identify the associated mycorrhizal fungi. Microscopic and ultrastructural investigations showed the formation of a hyphal sheath, intercellular penetration of fine hyphae and colonization of the cortical cells by swollen hyphae of the same fungus. These structures were formed by hymenomycetes and ascomycetes. Molecular phylogenetic analysis detected seven groups of mycorrhizal fungi belonging to the Sebacinales. This is the first study to obtain evidence of ectendomycorrhizas in the Vaccinioideae. The ascomycetous nucLSU sequences belonged to members of the Leotiomycetes. The ectendomycorrhiza of C. nobilis with Sebacinales is discussed as a specific, hitherto undescribed mycorrhizal subcategory of ectomycorrhizas. We propose the term 'cavendishioid mycorrhiza'. This subcategory is most likely specific for the Andean clade of Ericaceae.
DOI: 10.1111/j.1469-8137.2005.01583.x
PubMed: 16411938
Affiliations:
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scheme="Wicri" type="geographic" xml:lang="fr"><term>Équateur</term></keywords></textClass></profileDesc></teiHeader><front><div type="abstract" xml:lang="en">Cavendishia nobilis var. capitata is an endemic member of the Ericaceae growing as a hemiepiphyte in the tropical mountain rain forest of southern Ecuador. Mycorrhizas were collected from 20 individuals along an altitudinal gradient between 1850 and 2300 m. Transmission electron microscopy was used to study the symbiotic association in detail, and phylogenetic analyses based on nuclear rDNA coding for the ribosomal large subunit (nucLSU) were carried out to identify the associated mycorrhizal fungi. Microscopic and ultrastructural investigations showed the formation of a hyphal sheath, intercellular penetration of fine hyphae and colonization of the cortical cells by swollen hyphae of the same fungus. These structures were formed by hymenomycetes and ascomycetes. Molecular phylogenetic analysis detected seven groups of mycorrhizal fungi belonging to the Sebacinales. This is the first study to obtain evidence of ectendomycorrhizas in the Vaccinioideae. The ascomycetous nucLSU sequences belonged to members of the Leotiomycetes. The ectendomycorrhiza of C. nobilis with Sebacinales is discussed as a specific, hitherto undescribed mycorrhizal subcategory of ectomycorrhizas. We propose the term 'cavendishioid mycorrhiza'. This subcategory is most likely specific for the Andean clade of Ericaceae.</div></front></TEI><pubmed><MedlineCitation Status="MEDLINE" Owner="NLM"><PMID Version="1">16411938</PMID><DateCompleted><Year>2006</Year><Month>03</Month><Day>02</Day></DateCompleted><DateRevised><Year>2020</Year><Month>09</Month><Day>30</Day></DateRevised><Article PubModel="Print"><Journal><ISSN IssnType="Print">0028-646X</ISSN><JournalIssue CitedMedium="Print"><Volume>169</Volume><Issue>2</Issue><PubDate><Year>2006</Year></PubDate></JournalIssue><Title>The New phytologist</Title><ISOAbbreviation>New Phytol</ISOAbbreviation></Journal><ArticleTitle>Sebacinales form ectendomycorrhizas with Cavendishia nobilis, a member of the Andean clade of Ericaceae, in the mountain rain forest of southern Ecuador.</ArticleTitle><Pagination><MedlinePgn>355-65</MedlinePgn></Pagination><Abstract><AbstractText>Cavendishia nobilis var. capitata is an endemic member of the Ericaceae growing as a hemiepiphyte in the tropical mountain rain forest of southern Ecuador. Mycorrhizas were collected from 20 individuals along an altitudinal gradient between 1850 and 2300 m. Transmission electron microscopy was used to study the symbiotic association in detail, and phylogenetic analyses based on nuclear rDNA coding for the ribosomal large subunit (nucLSU) were carried out to identify the associated mycorrhizal fungi. Microscopic and ultrastructural investigations showed the formation of a hyphal sheath, intercellular penetration of fine hyphae and colonization of the cortical cells by swollen hyphae of the same fungus. These structures were formed by hymenomycetes and ascomycetes. Molecular phylogenetic analysis detected seven groups of mycorrhizal fungi belonging to the Sebacinales. This is the first study to obtain evidence of ectendomycorrhizas in the Vaccinioideae. The ascomycetous nucLSU sequences belonged to members of the Leotiomycetes. The ectendomycorrhiza of C. nobilis with Sebacinales is discussed as a specific, hitherto undescribed mycorrhizal subcategory of ectomycorrhizas. We propose the term 'cavendishioid mycorrhiza'. 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