Molecular diversity and phylogenetic affinities of symbiotic root-associated ascomycetes of the Helotiales in burnt and metal polluted habitats
• The diversity and phylogenetic affinities of symbiotic root-associated ascomycetes of the Helotiales are reported here based on ITS1-5.8S-ITS2 (internal transcribed spacer, ITS) nrDNA sequences. • Mycobionts were obtained from roots of ericoid plants and grasses and from Piceirhiza bicolorata ec...
| Publié dans: | The New phytologist. - 1979. - 155(2002), 1 vom: 25. Juli, Seite 131-148 |
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| Auteur principal: | |
| Autres auteurs: | , |
| Format: | Article en ligne |
| Langue: | English |
| Publié: |
2002
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| Accès à la collection: | The New phytologist |
| Sujets: | Journal Article Ascomycetes Mollisia Phialocephala fortinii Tapesia dark septate endophytes (DSE) group I intron molecular ecology |
| Résumé: | • The diversity and phylogenetic affinities of symbiotic root-associated ascomycetes of the Helotiales are reported here based on ITS1-5.8S-ITS2 (internal transcribed spacer, ITS) nrDNA sequences. • Mycobionts were obtained from roots of ericoid plants and grasses and from Piceirhiza bicolorata ectomycorrhizas (pbECM) on conifers and hardwoods, predominantly in burnt and metal-polluted habitats. The mycobionts were sequenced through the ITS and compared with sequences of known helotialean taxa. • We recognized 132 fungal ITS-sequences with affinity to the Helotiales, of which 75% (54 different ITS-genotypes) grouped within the Hymenoscyphus ericae aggregate including Phialophora finlandia. This aggregate showed stronger affinity to members of the Hyaloscyphaceae and Dermateaceae than to Hymenoscyphus fructigenus (genus-type species; Helotiaceae). Most of the pbECM mycobionts grouped with P. finlandia, although some grouped with H. ericae. Two genotypes co-occurred in ericoid and ectomycorrhizal roots. • The H. ericae aggregate may be referable to a generic unit, and includes a diverse group of closely related, more or less darkly pigmented, root-associated ascomycetes where the borders between intra- and interspecific ITS-sequence variation, as well as different mycorrhizal and nonmycorrhizal root-symbioses, remains unclear |
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| Description: | Date Revised 20.04.2021 published: Print GENBANK: AF141164, ARON3129, AJ430222, ARON3139, AJ430223, AF141161, AF141167, AF141172, ARON3150, AJ430224, ARON3188, AJ430228, ARON3154, AJ430229, ARON3093, AJ430397, AJ319078, ARON3264, AJ430396, AF169309, ARON2329, AJ430395, ARON3114, AJ430398, U57492, NY1, U57495, U59145, AJ430394, U58636, U58638, AJ430218, AJ430219, ARON3186, AJ430220, ARON3137, AJ430221, U59004, U51980, U92305, U51958, AF214579, AF214580, H24, AF011327, AF083200, AJ319077, GI685, AF177733, AF269067, GU44, AF252842, DGC25, AF252841, AF149068, AF149070, AF149071, AF149082, AF149084, AF149085, U92298, U92290, U92294 Citation Status PubMed-not-MEDLINE |
| ISSN: | 1469-8137 |
| DOI: | 10.1046/j.1469-8137.2002.00444.x |