Multi-Gene Phylogenetic Analyses Reveals Heteroxylaria Gen. Nov. and New Contributions to Xylariaceae (Ascomycota) from China

An in-depth study of the phylogenetic relationships of Xylaria species associated with nutshells of fruits and seeds within the genus Xylaria and related genera of Xylaceaecea was conducted in China. The multi-gene phylogenetic analyses were carried out based on ITS, RPB2, and TUB sequences of 100 s...

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Published inJournal of fungi (Basel) Vol. 10; no. 9; p. 645
Main Authors Zhu, An-Hong, Song, Zi-Kun, Wang, Jun-Fang, Guan, Hao-Wen, Qu, Zhi, Ma, Hai-Xia
Format Journal Article
LanguageEnglish
Published Switzerland MDPI AG 11.09.2024
MDPI
Subjects
Ascospores
Datasets
ecological characters
fructicolous-fungi
Morphology
Mounds
multigene phylogeny
New combinations
New genera
New species
Pathogens
Phylogenetics
Phylogeny
Physical characteristics
Plant metabolites
seminicolous-fungi
Xylaria
Xylariaceae
China
India
Japan
new species
seminicolous-fungi
multigene phylogeny
ecological characters
fructicolous-fungi
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Summary:An in-depth study of the phylogenetic relationships of Xylaria species associated with nutshells of fruits and seeds within the genus Xylaria and related genera of Xylaceaecea was conducted in China. The multi-gene phylogenetic analyses were carried out based on ITS, RPB2, and TUB sequences of 100 species of 16 known genera in Xylariaceae around the world. Based on molecular phylogenetic analyses, morphological observations, and ecological habitats, a new genus, Heteroxylaria, is established to accommodate four new species, viz. H. cordiicola, H. juglandicola, H. meliicola, and H. terminaliicola, and four new combinations, viz. H. oxyacanthae, H. palmicola, H. reevesiae, and H. rohrensis. The genus is characterized by cylindrical stromata with conspicuous to inconspicuous perithecial mounds, surface black, having brown to dark brown ascospores with a germ slit, and it grows on nutshell of fruits. The combined ITS+RPB2+TUB sequence dataset of representative taxa in the Xylariaceae demonstrate that Heteroxylaria is grouped with Hypocreodendron but forms a monophyletic lineage. All novelties described herein are morphologically illustrated and compared to similar species and phylogeny is investigated to establish new genera and species.
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ISSN:2309-608X
2309-608X
DOI:10.3390/jof10090645