Publications by authors named "Hai-Sheng Yuan"

5 Publications

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Hydnaceous fungi of China 8. Morphological and molecular identification of three new species of and a new record from southwest China.

MycoKeys 2020 3;66:83-103. Epub 2020 Apr 3.

CAS Key Laboratory of Forest Ecology and Management, Institute of Applied Ecology, Chinese Academy of Sciences, Shenyang 110164, China Institute of Applied Ecology, Chinese Academy of Sciences Shenyang China.

Three new stipitate hydnoid fungi, , and , are described and illustrated, based on morphological characteristics and nuc ITS rDNA + nuc LSU rDNA sequence analyses and a new record, , from China is reported. is characterised by ellipsoid to round basidiocarps, reddish-brown to dark brown, felted pileal surface with white and incurved margins, simple-septate and partly short-celled generative hyphae and irregular subglobose, thin-walled, brown basidiospores with tuberculate ornamentation (tuberculi up to 1 μm long). is characterised by infundibuliform to round, occasionally deeply fissured pileus, pale orange to dark ruby pileal surface with ascending and coarse scales, simple-septate generative hyphae and irregular ellipsoid to globose, thin-walled, brown basidiospores with tuberculate ornamentation (tuberculi up to 0.7 μm long). is characterised by plano-convex to somewhat depressed and regular orbicular pileus, light brown to dark brown pileal surface with adhering squamose and purplish-brown, incurved and occasionally incised margin, cylindrical or broadened below stipe, simple-septate generative hyphae and irregular ellipsoid to subglobose, thin-walled basidiospores with tuberculate ornamentation (tuberculi up to 1 μm long). The absence of the clamp connection is the common morphological characteristic of these three new species; however, , a new record from China, has frequently clamped generative hyphae. Molecular analyses confirm the phylogenetic positions of three new and the new record species. The discriminating characters of these three new species and closely related species are discussed and a key to the species of from China is provided.
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http://dx.doi.org/10.3897/mycokeys.66.49910DOI Listing
http://www.ncbi.nlm.nih.gov/pmc/articles/PMC7148386PMC
April 2020

Ectomycorrhizal fungus-associated determinants jointly reflect ecological processes in a temperature broad-leaved mixed forest.

Sci Total Environ 2020 Feb 14;703:135475. Epub 2019 Nov 14.

CAS Key Laboratory of Forest Ecology and Management, Institute of Applied Ecology, Chinese Academy of Sciences, Shenyang 110164, PR China. Electronic address:

Ectomycorrhizal (ECM) fungi are closely related to vegetation compositions, edaphic properties, and site-specific processes. However, the coevolutionary mechanisms underlying the spatial distributions in floristic and ECM fungal composition in the context of biotic adaptations and abiotic variances remain unclear. We combine a total of 25 ECM fungus-associated environmental variables to impose three types of composite scores and then quantify the environmental gradients of geographical site, soil chemical property and vegetation functional trait across 122 grids of 20 m × 20 m in a 25-hm forest plot. Significant dissimilarities in vegetational and ECM fungal abundance and composition existed along the above environmental gradients. Specifically, a contrasting floristic distribution (e.g., Betula platyphylla vs. Tilia mandshurica) existed between the northeastern and southwestern areas and was closely related to the nutrient and moisture gradients (with high levels in the west and low levels in the east). Furthermore, the ECM fungal communities were more abundant in the nutrient-poor and low-moisture environments than in the nutrient-rich and high-moisture environments, and the mixed-forest in the middle-gradient sites between the northeastern and southwestern areas harbored the highest ECM fungal diversity. These findings suggest that predictable within-site vegetation succession is closely related to ECM-associated determinants and the natural spatial heterogeneity of edaphic properties at a local scale.
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http://dx.doi.org/10.1016/j.scitotenv.2019.135475DOI Listing
February 2020

Molecular and morphological evidence reveal a new genus and species in Auriculariales from tropical China.

MycoKeys 2018 20(35):27-39. Epub 2018 Jun 20.

Mycothèque de l'Université catholique de Louvain (MUCL, BCCMTM), Earth and Life Institute - Microbiology (ELIM), Université catholique de Louvain, Croix du Sud 2 bte L7.05.06, B-1348 Louvain-la-Neuve, Belgium.

is proposed based on DNA sequences data and morphological characteristics. It is known so far from southern, tropical China. The new species is characterised by an annual, resupinate basidiocarp with a shallow, subporoid hymenophore, a hymenium restricted to the bottom of the tubes, a dimitic hyphal system, presence of encrusted skeletocystidia and dendrohyphidia, longitudinally septate basidia and smooth, oblong-ellipsoid to cylindrical, acyanophilous basidiospores. Phylogenetic analyses based on ITS + nLSU DNA sequences data indicate that belongs to Auriculariaceae in which it has an isolated position. Phylogenetic inferences show to be related to . However, the ITS sequences similarity between and , the type species of , were 89.84% and support the establishment of the new genus. Inversely, clustered with with strong support and it is transferred to .
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http://dx.doi.org/10.3897/mycokeys.35.25271DOI Listing
http://www.ncbi.nlm.nih.gov/pmc/articles/PMC6021479PMC
June 2018

Morphological and molecular identification of three new species of Tomentella from Finland.

Mycologia 2018 Jul-Aug;110(4):677-691. Epub 2018 Aug 6.

a CAS Key Laboratory of Forest Ecology, Institute of Applied Ecology, Chinese Academy of Sciences , Shenyang 110164 , People's Republic of China.

Three new species of Tomentella (Thelephorales) from Finland, T. globosa, T. lammiensis, and T. longisterigmata, are described and illustrated with morphological characteristics and nuc rDNA ITS1-5.8S-ITS2 sequences. T. globosa is characterized by mucedinoid, pale to dark brown basidiocarps adherent to the substrate, generative hyphae with clamps and rarely with simple septa, and echinulate, globose basidiospores (echinuli up to 1.5 μm long). T. lammiensis is characterized by mucedinoid, oxide yellow to golden brown basidiocarps adherent to the substrate, generative hyphae with clamps and rarely with simple septa, and echinulate, ellipsoid, triangular, or lobbed basidiospores (echinuli up to 2 μm long). T. longisterigmata is characterized by mucedinoid, dark brown to chestnut basidiocarps separable from the substrate, generative hyphae clamped and rarely with simple septa, the long basidial sterigmata (7-11 μm long), and echinulate, globose basidiospores (echinuli up to 2 μm long). An absence of rhizomorphs and cystidia is their common morphological feature. Molecular analyses by maximum likelihood, maximum parsimony, and Bayesian analyses confirm the phylogenetic position of these three new species. The discriminating characters of these new species and their closely related species are discussed in this study, and a key to the species from Finland is provided.
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http://dx.doi.org/10.1080/00275514.2018.1474683DOI Listing
January 2019

A Novel Phellinidium sp. Causes Laminated Root Rot on Qilian Juniper (Sabina przewalskii) in Northwest China.

Plant Dis 2015 Jan;99(1):39-43

State Key Laboratory of Forest and Soil Ecology, Institute of Applied Ecology, Chinese Academy of Sciences, Shenyang 110164, China.

A laminated root rot on Qilian juniper (Sabina przewalskii) caused by a species of Phellinidium (Basidiomycota) was observed in northwest China. Seventeen fungal samples collected from Qinghai Province during 2012 and 2013 were used for taxonomic and pathogenicity tests. The fungal pathogen was identified by morphological characters and phylogenetic analyses based on nLSU sequences. A new fungus is described herein as Phellinidium qilianense sp. nov. One-year-old Qilian juniper seedlings were wound-inoculated under controlled conditions to test pathogenicity of the fungal species. The fungus was successfully reisolated from decayed tissue of tested seedlings. P. qilianense is a new forest pathogen on coniferous trees in China.
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http://dx.doi.org/10.1094/PDIS-03-14-0335-REDOI Listing
January 2015