5.00
Hdl Handle:
http://hdl.handle.net/10033/317180
Title:
A polyphasic taxonomy of Daldinia (Xylariaceae).
Authors:
Stadler, Marc ( 0000-0002-7284-8671 ) ; Læssøe, Thomas; Fournier, Jacques; Decock, Cony; Schmieschek, Beata; Tichy, Hans-Volker; Peršoh, Derek
Abstract:
For a monograph based on a polythetic concept, several thousands of herbarium specimens, and several hundreds of freshly collected and cultured specimens of Daldinia and allied Xylariaceae, originating from around the world, were studied for morphological traits, including by SEM, and chemically by HPLC profiles using UV-visible and mass spectrometric detection. Emphasis was given to tropical material, and importantly, ancient specimens, including as many types as possible, were tracked and studied to review earlier taxonomic concepts. An epitype of D. eschscholtzii was selected as representative of the morphochemotype that is most widely distributed in the tropics. Six new species of Daldinia from the tropics and the southern Hemisphere are described. Daldinia asphalatum is resurrected, and D. cudonia is regarded as its synonym. In addition, the following binomials are epi-, iso-, neo- and/or lectotypified: Daldinia asphalatum, D. caldariorum, D. clavata, D. cuprea, D. durissima, D. eschscholtzii, D. grandis, D. loculata, and D. vernicosa. Annellosporium and Versiomyces are regarded as synonyms of Daldinia. Many new synonymies in Daldinia are proposed, and some previously published names are rejected. In total, 47 taxa in Daldinia are recognised and a key is provided. Their biogeography, chorology, and ecology, as well as the importance of their secondary metabolites, are also discussed. The previous definition of the genus is emended. The species concept is based mainly on morphological and other phenotype-derived characters because, despite diligent search, no molecular data or cultures of several of the accepted species could be obtained. Daldinia is segregated into five major groups, based on phenotypic characteristics. Some unnamed but aberrant specimens were not found in good condition and are therefore not formally described as new species. However, they are illustrated in detail in a hope that this will facilitate the discovery of fresh material in future. A preliminary molecular phylogeny based on 5.8S/ITS nrDNA including numerous representatives of all hitherto described taxa for which cultures are extant, was found basically in agreement with the above mentioned segregation of the genus, based on morphological and chemotaxonomic evidence. In the rDNA based phylogenetic tree, Daldinia appears clearly distinct from members of the genera Annulohypoxylon and Hypoxylon; nevertheless, representatives of small genera of predominantly tropical origin (Entonaema, Phylacia, Ruwenzoria, Rhopalostroma, Thamnomyces) appear to have evolved from daldinioid ancestors and are nested inside the Daldinia clade. Interestingly, these findings correlate with chemotaxonomic characters to a great extent, especially regarding the distribution of marker metabolites in their mycelial cultures. Hence, the current study revealed for the first time that fungal secondary metabolite profiles can have taxonomic value beyond the species rank and even coincide with phylogenetic data.
Affiliation:
Dept. Microbial Drugs, Helmholtz Centre for infection research, Inhoffenstr. 7, D38124 Braunschweig, Germany
Citation:
A polyphasic taxonomy of Daldinia (Xylariaceae). 2014, 77 (1):1-143 Stud. Mycol.
Journal:
Studies in mycology
Issue Date:
15-Mar-2014
URI:
http://hdl.handle.net/10033/317180
DOI:
10.3114/sim0016
PubMed ID:
24790283
Type:
Article
Language:
en
ISSN:
0166-0616
Appears in Collections:
Publications of the department Microbial Drugs (MWIS)

Full metadata record

DC FieldValue Language
dc.contributor.authorStadler, Marcen
dc.contributor.authorLæssøe, Thomasen
dc.contributor.authorFournier, Jacquesen
dc.contributor.authorDecock, Conyen
dc.contributor.authorSchmieschek, Beataen
dc.contributor.authorTichy, Hans-Volkeren
dc.contributor.authorPeršoh, Dereken
dc.date.accessioned2014-05-20T09:35:33Zen
dc.date.available2014-05-20T09:35:33Zen
dc.date.issued2014-03-15en
dc.identifier.citationA polyphasic taxonomy of Daldinia (Xylariaceae). 2014, 77 (1):1-143 Stud. Mycol.en
dc.identifier.issn0166-0616en
dc.identifier.pmid24790283en
dc.identifier.doi10.3114/sim0016en
dc.identifier.urihttp://hdl.handle.net/10033/317180en
dc.description.abstractFor a monograph based on a polythetic concept, several thousands of herbarium specimens, and several hundreds of freshly collected and cultured specimens of Daldinia and allied Xylariaceae, originating from around the world, were studied for morphological traits, including by SEM, and chemically by HPLC profiles using UV-visible and mass spectrometric detection. Emphasis was given to tropical material, and importantly, ancient specimens, including as many types as possible, were tracked and studied to review earlier taxonomic concepts. An epitype of D. eschscholtzii was selected as representative of the morphochemotype that is most widely distributed in the tropics. Six new species of Daldinia from the tropics and the southern Hemisphere are described. Daldinia asphalatum is resurrected, and D. cudonia is regarded as its synonym. In addition, the following binomials are epi-, iso-, neo- and/or lectotypified: Daldinia asphalatum, D. caldariorum, D. clavata, D. cuprea, D. durissima, D. eschscholtzii, D. grandis, D. loculata, and D. vernicosa. Annellosporium and Versiomyces are regarded as synonyms of Daldinia. Many new synonymies in Daldinia are proposed, and some previously published names are rejected. In total, 47 taxa in Daldinia are recognised and a key is provided. Their biogeography, chorology, and ecology, as well as the importance of their secondary metabolites, are also discussed. The previous definition of the genus is emended. The species concept is based mainly on morphological and other phenotype-derived characters because, despite diligent search, no molecular data or cultures of several of the accepted species could be obtained. Daldinia is segregated into five major groups, based on phenotypic characteristics. Some unnamed but aberrant specimens were not found in good condition and are therefore not formally described as new species. However, they are illustrated in detail in a hope that this will facilitate the discovery of fresh material in future. A preliminary molecular phylogeny based on 5.8S/ITS nrDNA including numerous representatives of all hitherto described taxa for which cultures are extant, was found basically in agreement with the above mentioned segregation of the genus, based on morphological and chemotaxonomic evidence. In the rDNA based phylogenetic tree, Daldinia appears clearly distinct from members of the genera Annulohypoxylon and Hypoxylon; nevertheless, representatives of small genera of predominantly tropical origin (Entonaema, Phylacia, Ruwenzoria, Rhopalostroma, Thamnomyces) appear to have evolved from daldinioid ancestors and are nested inside the Daldinia clade. Interestingly, these findings correlate with chemotaxonomic characters to a great extent, especially regarding the distribution of marker metabolites in their mycelial cultures. Hence, the current study revealed for the first time that fungal secondary metabolite profiles can have taxonomic value beyond the species rank and even coincide with phylogenetic data.en
dc.language.isoenen
dc.rightsArchived with thanks to Studies in mycologyen
dc.titleA polyphasic taxonomy of Daldinia (Xylariaceae).en
dc.typeArticleen
dc.contributor.departmentDept. Microbial Drugs, Helmholtz Centre for infection research, Inhoffenstr. 7, D38124 Braunschweig, Germanyen
dc.identifier.journalStudies in mycologyen

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