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Phylogenetic and taxonomic revision of Lopadostoma.

Jaklitsch WM, Fournier J, Rogers JD, Voglmayr H - Persoonia (2014)

Bottom Line: Most species formerly assigned to Lopadostoma do not belong to the genus.Its type and currently only confirmed species Anthostoma decipiens belongs to Diatrypaceae.Anthostoma insidiosum is an older name for Anthostomella (Diatrype) adusta.

View Article: PubMed Central - PubMed

Affiliation: Division of Systematic and Evolutionary Botany, Department of Botany and Biodiversity Research, University of Vienna, Rennweg 14, 1030 Wien, Austria;

ABSTRACT
The genus Lopadostoma (Xylariaceae, Xylariales) is revised. Most species formerly assigned to Lopadostoma do not belong to the genus. Twelve species are herein recognised, of which two are only known from morphology. Ten species, of which six (L. americanum, L. fagi, L. insulare, L. lechatii, L. meridionale and L. quercicola) are newly described, are characterised by both morphology and DNA phylogeny using LSU, ITS and rpb2 sequences. Morphologically, ecologically and phylogenetically Lopadostoma is a well-defined genus comprising exclusively species with pustular pseudostroma development in bark of angiospermous trees. Phaeosperma ailanthi, Phaeosperma dryophilum and Sphaeria linosperma are combined in Lopadostoma. Lopadostoma gastrinum is neotypified and L. turgidum is lecto- and epitypified. Species with asci and ascospores similar to those of Lopadostoma but having perithecia immersed in wood, particularly those of Lopadostoma subg. Anthostomopsis have been determined to be unrelated to the genus. DNA data confirm that Anthostoma is unrelated to Lopadostoma. Its type and currently only confirmed species Anthostoma decipiens belongs to Diatrypaceae. DNA data also show that L. pouzarii and Barrmaelia macrospora are unrelated to Lopadostoma. A commentary is provided for names in Lopadostoma and those names in Anthostoma that may be putative species of Lopadostoma based on their protologues. Anthostoma insidiosum is an older name for Anthostomella (Diatrype) adusta.

No MeSH data available.


Phylogram showing one of eight MP trees 950 steps long revealed by PAUP from an analysis of the nuLSU matrix of selected Xylariaceae and Diatrypaceae, showing the phylogenetic position of Lopadostoma spp., Barrmaelia macrospora, Anthostoma decipiens and Cryptovalsa rabenhorstii. MP and ML bootstrap support above 50 % are given at the first and second position, respectively, above or below the branches. Nodes collapsed in the strict consensus of the eight MP trees are marked by asterisks (*). GenBank accession numbers are given following the taxon names; species sequenced in the present study are formatted in bold. Species labelled in red correspond to Lopadostoma s.str.; species labelled in blue are not congeneric with Lopadostoma.
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Figure 1: Phylogram showing one of eight MP trees 950 steps long revealed by PAUP from an analysis of the nuLSU matrix of selected Xylariaceae and Diatrypaceae, showing the phylogenetic position of Lopadostoma spp., Barrmaelia macrospora, Anthostoma decipiens and Cryptovalsa rabenhorstii. MP and ML bootstrap support above 50 % are given at the first and second position, respectively, above or below the branches. Nodes collapsed in the strict consensus of the eight MP trees are marked by asterisks (*). GenBank accession numbers are given following the taxon names; species sequenced in the present study are formatted in bold. Species labelled in red correspond to Lopadostoma s.str.; species labelled in blue are not congeneric with Lopadostoma.

Mentions: To reveal the phylogenetic position of Lopadostoma within the Xylariaceae and to investigate whether the genus is monophyletic, a phylogenetic analysis was performed with nuLSU rDNA (LSU) sequences. Sequences of representative species of Xylariaceae and Diatrypaceae were selected from GenBank; Hypocrea rufa and Nectria cinnabarina (Hypocreales) were included as outgroup taxa. GenBank accession numbers are given in the phylogenetic tree (Fig. 1). For detailed investigations of species relationships and delimitation within Lopadostoma, a combined matrix of nuSSU-ITS1-5.8S-ITS2-LSU rDNA and rpb2 sequences was produced for phylogenetic analyses, with Lopadostoma pouzarii as outgroup according to Fig. 1. The GenBank accession numbers of sequences used in these analyses are given in Table 1.


Phylogenetic and taxonomic revision of Lopadostoma.

Jaklitsch WM, Fournier J, Rogers JD, Voglmayr H - Persoonia (2014)

Phylogram showing one of eight MP trees 950 steps long revealed by PAUP from an analysis of the nuLSU matrix of selected Xylariaceae and Diatrypaceae, showing the phylogenetic position of Lopadostoma spp., Barrmaelia macrospora, Anthostoma decipiens and Cryptovalsa rabenhorstii. MP and ML bootstrap support above 50 % are given at the first and second position, respectively, above or below the branches. Nodes collapsed in the strict consensus of the eight MP trees are marked by asterisks (*). GenBank accession numbers are given following the taxon names; species sequenced in the present study are formatted in bold. Species labelled in red correspond to Lopadostoma s.str.; species labelled in blue are not congeneric with Lopadostoma.
© Copyright Policy - open-access
Related In: Results  -  Collection

License
Show All Figures
getmorefigures.php?uid=PMC4150080&req=5

Figure 1: Phylogram showing one of eight MP trees 950 steps long revealed by PAUP from an analysis of the nuLSU matrix of selected Xylariaceae and Diatrypaceae, showing the phylogenetic position of Lopadostoma spp., Barrmaelia macrospora, Anthostoma decipiens and Cryptovalsa rabenhorstii. MP and ML bootstrap support above 50 % are given at the first and second position, respectively, above or below the branches. Nodes collapsed in the strict consensus of the eight MP trees are marked by asterisks (*). GenBank accession numbers are given following the taxon names; species sequenced in the present study are formatted in bold. Species labelled in red correspond to Lopadostoma s.str.; species labelled in blue are not congeneric with Lopadostoma.
Mentions: To reveal the phylogenetic position of Lopadostoma within the Xylariaceae and to investigate whether the genus is monophyletic, a phylogenetic analysis was performed with nuLSU rDNA (LSU) sequences. Sequences of representative species of Xylariaceae and Diatrypaceae were selected from GenBank; Hypocrea rufa and Nectria cinnabarina (Hypocreales) were included as outgroup taxa. GenBank accession numbers are given in the phylogenetic tree (Fig. 1). For detailed investigations of species relationships and delimitation within Lopadostoma, a combined matrix of nuSSU-ITS1-5.8S-ITS2-LSU rDNA and rpb2 sequences was produced for phylogenetic analyses, with Lopadostoma pouzarii as outgroup according to Fig. 1. The GenBank accession numbers of sequences used in these analyses are given in Table 1.

Bottom Line: Most species formerly assigned to Lopadostoma do not belong to the genus.Its type and currently only confirmed species Anthostoma decipiens belongs to Diatrypaceae.Anthostoma insidiosum is an older name for Anthostomella (Diatrype) adusta.

View Article: PubMed Central - PubMed

Affiliation: Division of Systematic and Evolutionary Botany, Department of Botany and Biodiversity Research, University of Vienna, Rennweg 14, 1030 Wien, Austria;

ABSTRACT
The genus Lopadostoma (Xylariaceae, Xylariales) is revised. Most species formerly assigned to Lopadostoma do not belong to the genus. Twelve species are herein recognised, of which two are only known from morphology. Ten species, of which six (L. americanum, L. fagi, L. insulare, L. lechatii, L. meridionale and L. quercicola) are newly described, are characterised by both morphology and DNA phylogeny using LSU, ITS and rpb2 sequences. Morphologically, ecologically and phylogenetically Lopadostoma is a well-defined genus comprising exclusively species with pustular pseudostroma development in bark of angiospermous trees. Phaeosperma ailanthi, Phaeosperma dryophilum and Sphaeria linosperma are combined in Lopadostoma. Lopadostoma gastrinum is neotypified and L. turgidum is lecto- and epitypified. Species with asci and ascospores similar to those of Lopadostoma but having perithecia immersed in wood, particularly those of Lopadostoma subg. Anthostomopsis have been determined to be unrelated to the genus. DNA data confirm that Anthostoma is unrelated to Lopadostoma. Its type and currently only confirmed species Anthostoma decipiens belongs to Diatrypaceae. DNA data also show that L. pouzarii and Barrmaelia macrospora are unrelated to Lopadostoma. A commentary is provided for names in Lopadostoma and those names in Anthostoma that may be putative species of Lopadostoma based on their protologues. Anthostoma insidiosum is an older name for Anthostomella (Diatrype) adusta.

No MeSH data available.