Guizhou Provincial Institute of Crop Germplasm Resources

Guiyang, China

Guizhou Provincial Institute of Crop Germplasm Resources

Guiyang, China
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Zhang J.-F.,Guizhou Academy of Agricultural science | Zhang J.-F.,Mae Fah Luang University | Liu J.-K.,Guizhou Academy of Agricultural science | Liu J.-K.,Guizhou Institute of Biotechnology | And 7 more authors.
Phytotaxa | Year: 2017

A survey of saprobic fungi yielded two new ascomycetes, Dyfrolomyces maolanensis and D. thamplaensis, which were isolated from dead branches collected from karst landforms of China and Thailand respectively. Both of them are characterized by immersed, clypeate, papillate ascomata, long cylindrical, short-pedicellate asci and fusiform, guttulate, 3-septate ascospores. Molecular analysis of combined LSU, SSU and TEF1-a sequence data placed them in the family Dyfrolomycetaceae with good support. Morphologically, they differ from other species of Dyfrolomyces by their ascospores, which are normally 3-septate, fusiform with acute or angular ends. And those reported Dyfrolomyces species were collected aquatic habitats, while our new species in this study were collected from terrestrial habitats. Saccardoella aquatica shares the similar morphology with these two new taxa, but can be distinguished in having its smaller asci and ascospores. Therefore, we introduce D thamplaensis and D. maolanensis here as new species and also transfer S. aquatica to Dyfrolomyces based on its similar morphological characters, as well as the molecular evidence of above two new taxa. © 2017 Magnolia Press.


Gui Y.,Huazhong Agricultural University | Gui Y.,Guizhou Provincial Institute of Crop Germplasm Resources | Gui Y.,Guizhou Key Laboratory of Agricultural Biotechnology | Zhu G.-S.,Guizhou Provincial Institute of Crop Germplasm Resources | And 10 more authors.
Fungal Biology | Year: 2015

Agaricus is a genus of saprobic basidiomycetes with more than 400 species recognized worldwide, with about 50 species known in China. Our objective was to investigate three new species of section Arvenses in highland subtropical Southwest China. Agaricus guizhouensis is a new species characterized by a white pileus with yellowish squamules, small ellipsoid spores and cheilocystidia with yellowish-brown pigments; another new species, Agaricus longistipes is recognized by its slender stipe, and its elongate-ellipsoid basidiospores; the third new one, Agaricus megalocarpus is remarkable by its large size and its pileus surface covered with fine brown squamules. It is firstly reported for Guizhou Province that Agaricus abruptibulbus, Agaricus flocculosipes, and Agaricus subrufescens are illustrated. Two probable new species require further studying. A phylogenetic analyses of rDNA-ITS sequence data belonging to section Arvenses showed that the section Arvenses is monophyletic and can be subdivided in five branches, the branch of A. subrufescens and four clades (A-D). The eight species from highland subtropical Southwest China were distributed in all five branches, indicating that this highland is at the climatic crossroads. The white pileus trait and the potential interest are discussed. These data suggest a potential species richness that remains to be discovered. © 2014 The British Mycological Society.


PubMed | Guizhou Academy of Agricultural science, Huazhong Agricultural University, Avda. Padre Claret 7, Mae Fah Luang University and 2 more.
Type: Journal Article | Journal: Fungal biology | Year: 2015

Agaricus is a genus of saprobic basidiomycetes with more than 400 species recognized worldwide, with about 50 species known in China. Our objective was to investigate three new species of section Arvenses in highland subtropical Southwest China. Agaricus guizhouensis is a new species characterized by a white pileus with yellowish squamules, small ellipsoid spores and cheilocystidia with yellowish-brown pigments; another new species, Agaricus longistipes is recognized by its slender stipe, and its elongate-ellipsoid basidiospores; the third new one, Agaricus megalocarpus is remarkable by its large size and its pileus surface covered with fine brown squamules. It is firstly reported for Guizhou Province that Agaricus abruptibulbus, Agaricus flocculosipes, and Agaricus subrufescens are illustrated. Two probable new species require further studying. A phylogenetic analyses of rDNA-ITS sequence data belonging to section Arvenses showed that the section Arvenses is monophyletic and can be subdivided in five branches, the branch of A. subrufescens and four clades (A-D). The eight species from highland subtropical Southwest China were distributed in all five branches, indicating that this highland is at the climatic crossroads. The white pileus trait and the potential interest are discussed. These data suggest a potential species richness that remains to be discovered.

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