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  • 1
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    Juglanconis gen. nov. on Juglandaceae, and the new family Juglanconidaceae (Diaporthales) (2017)
    In:  Persoonia - Molecular Phylogeny and Evolution of Fungi (1878-9080) vol.38 (2017) p.136
    Details
    Publication Date: 2017-01-20
    Description: Molecular phylogenetic analyses of ITS-LSU rDNA sequence data demonstrate that Melanconis species occurring on Juglandaceae are phylogenetically distinct from Melanconis s.str., and therefore the new genus Juglanconis is described. Morphologically, the genus Juglanconis differs from Melanconis by light to dark brown conidia with irregular verrucae on the inner surface of the conidial wall, while in Melanconis s.str. they are smooth. Juglanconis forms a separate clade not affiliated with a described family of Diaporthales, and the family Juglanconidaceae is introduced to accommodate it. Data of macro- and microscopic morphology and phylogenetic multilocus analyses of partial nuSSU-ITS-LSU rDNA, cal, his, ms204, rpb1, rpb2, tef1 and tub2 sequences revealed four distinct species of Juglanconis. Comparison of the markers revealed that tef1 introns are the best performing markers for species delimitation, followed by cal, ms204 and tub2. The ITS, which is the primary barcoding locus for fungi, is amongst the poorest performing markers analysed, due to the comparatively low number of informative characters. Melanconium juglandinum (= Melanconis carthusiana), M. oblongum (= Melanconis juglandis) and M. pterocaryae are formally combined into Juglanconis, and J. appendiculata is described as a new species. Melanconium juglandinum and Melanconis carthusiana are neotypified and M. oblongum and Diaporthe juglandis are lectotypified. A short description and illustrations of the holotype of Melanconium ershadii from Pterocarya fraxinifolia are given, but based on morphology it is not considered to belong to Juglanconis. A key to all treated species of Juglanconis is provided.
    Keywords: Ascomycota ; Diaporthales ; molecular phylogeny ; new species ; pathogen ; systematics
    Repository Name: National Museum of Natural History, Netherlands
    Type: Article / Letter to the editor
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  • 2
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    Persistent hamathecial threads in the Nectriaceae, Hypocreales: Thyronectria revisited and re-instated (2014)
    In:  Persoonia - Molecular Phylogeny and Evolution of Fungi vol. 33 no. 1, pp. 182-211
    Details
    Publication Date: 2024-01-12
    Description: Based on type studies and freshly collected material we here re-instate the genus Thyronectria (Nectriaceae, Hypocreales). Species of this genus were recently for the most part classi\xef\xac\x81ed in the genera Pleonectria (Nectriaceae) or Mattirolia (Thyridiaceae), because Thyronectria and other genera had been identi\xef\xac\x81ed as members of the Thyridiaceae due to the presence of paraphyses. Molecular phylogenies based on several markers (act, ITS, LSU rDNA, rpb1, rpb2, tef1, tub) revealed that the Nectriaceae contain members whose ascomata are characterised by long, more or less persistent, apical paraphyses. All of these belong to a single genus, Thyronectria, which thus has representatives with hyaline, rosy, green or even dark brown and sometimes distoseptate ascospores. The type species of Thyronectria, T. rhodochlora, syn. T. patavina, syn. T. pyrrhochlora is re-described and illustrated. Within the Nectriaceae persistent, apical paraphyses are common in Thyronectria and rarely also occur in Nectria. The genus Mattirolia is revised and merged with Thyronectria and also Thyronectroidea is regarded as a synonym of Thyronectria. The three new species T. asturiensis, T. caudata and T. obscura are added to the genus. Species recently described in Pleonectria as well as some species of Mattirolia are combined in the genus, and a key to Thyronectria is provided. Five species are epitypi\xef\xac\x81ed. The type species of the genus Thyridium (Thyridiaceae), T. vestitum, is included in phylogenetic analyses to illustrate the phylogenetic distance of Thyronectria from the Thyridiaceae.
    Keywords: act ; Ascomycota ; Hypocreales ; Mattirolia ; Nectriaceae ; new species ; Pleonectria ; pyrenomycetes ; rpb1 ; rpb2 ; tef1 ; tub ; Thyridiaceae ; Thyridium ; Thyronectroidea
    Repository Name: National Museum of Natural History, Netherlands
    Type: info:eu-repo/semantics/article
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  • 3
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    Juglanconis gen. nov. on Juglandaceae, and the new family Juglanconidaceae (Diaporthales) (2017)
    In:  Persoonia - Molecular Phylogeny and Evolution of Fungi vol. 38, pp. 136-155
    Details
    Publication Date: 2024-01-12
    Description: Molecular phylogenetic analyses of ITS-LSU rDNA sequence data demonstrate that Melanconis species occurring on Juglandaceae are phylogenetically distinct from Melanconis s.str., and therefore the new genus Juglanconis is described. Morphologically, the genus Juglanconis differs from Melanconis by light to dark brown conidia with irregular verrucae on the inner surface of the conidial wall, while in Melanconis s.str. they are smooth. Juglanconis forms a separate clade not affiliated with a described family of Diaporthales, and the family Juglanconidaceae is introduced to accommodate it. Data of macro- and microscopic morphology and phylogenetic multilocus analyses of partial nuSSU-ITS-LSU rDNA, cal, his, ms204, rpb1, rpb2, tef1 and tub2 sequences revealed four distinct species of Juglanconis. Comparison of the markers revealed that tef1 introns are the best performing markers for species delimitation, followed by cal, ms204 and tub2. The ITS, which is the primary barcoding locus for fungi, is amongst the poorest performing markers analysed, due to the comparatively low number of informative characters. Melanconium juglandinum (= Melanconis carthusiana), M. oblongum (= Melanconis juglandis) and M. pterocaryae are formally combined into Juglanconis, and J. appendiculata is described as a new species. Melanconium juglandinum and Melanconis carthusiana are neotypified and M. oblongum and Diaporthe juglandis are lectotypified. A short description and illustrations of the holotype of Melanconium ershadii from Pterocarya fraxinifolia are given, but based on morphology it is not considered to belong to Juglanconis. A key to all treated species of Juglanconis is provided.
    Keywords: Ascomycota ; Diaporthales ; molecular phylogeny ; new species ; pathogen ; systematics
    Repository Name: National Museum of Natural History, Netherlands
    Type: info:eu-repo/semantics/article
    Format: application/pdf
    Location Call Number Expected Availability
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