A review of Cystoderma (Agaricales/Basidiomycota) from China with four new species and two new records

Li, Jiaxin; He, Ming; Zhao, Rui-Lin

doi:10.1080/21501203.2021.2013969

Cited by 4 publications

(5 citation statements)

References 19 publications

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“…Specimens were dried completely with a food drier under a temperature of 55 °C overnight. Anatomical and cytological features including lamellae, pileipellis, basidiospores, basidia, and cystidia were observed from dried specimens and following the protocols [ 17 , 18 , 19 ]. A total of 5% KOH were used for a staining reaction.…”

Section: Methodsmentioning

confidence: 99%

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A New Species Agrocybe striatipes, also a Newly Commercially Cultivated Mushroom with Highly Nutritional and Healthy Values

Yang

Ren

et al. 2023

JoF

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The species of Agrocybe (Strophariaceae, Agaricales, Agaricomycetes) are saprophytic and widely distributed in temperate regions. In this study, a new species named Agrocybe striatipes from China is described, which has been successfully cultivated in China recently. The phenotypic characteristics examination and molecular phylogenetic analyses using multilocus data (ITS and nrLSU) both support it as a new species in the genus Agrocybe. Moreover, nutritional ingredient analysis showed that the fruiting body of A. striatipes was rich in seventeen amino acids, including eight essential amino acids, in addition to high levels of calcium (78.5 mg/kg) and vitamin D (44.1 μg/100g). The following analysis of the heavy metal contents of the fruiting bodies show that it does not contain lead, cadmium, arsenic, mercury, and other heavy metal elements. In the crude extract of the mushroom, the nutrients in the aqueous phase are amino acids and oligosaccharides, and the active substances in the ethyl acetate layer are sterols, which have a variety of pharmacological effects. In conclusion, A. striatipes is not only a new species but also has highly application values as a cultivated edible mushroom in nutrition and health.

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Section: Methodsmentioning

confidence: 99%

“…Primers ITS4 and ITS5 were used for internal transcribed spacer (ITS) and LROR and LR5 for large ribosomal subunit (nrLSU) PCR reactions [ 21 ]. The PCR programs followed previous studies [ 19 , 20 , 22 ]. The PCR products were sent to a Biomed Biotechnology commercial company for sequencing.…”

Section: Methodsmentioning

confidence: 99%

A New Species Agrocybe striatipes, also a Newly Commercially Cultivated Mushroom with Highly Nutritional and Healthy Values

Yang

Ren

et al. 2023

JoF

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“…PCR was performed in 25 µL reactions consisting of 2 µL genomic DNA, 1 µL upstream and 1 µL downstream primers, 9 µL ddH2O, and 12 µL 2 × Es Taq MasterMix (Beijing Cowin Biotech Co., Ltd., Beijing, China). Then, we performed under the following conditions: 94 • C for 5 min, followed by 30 cycles of 94 • C for 30 s, 55 • C for 40 s, 72 • C for 50 s, and a final extension step at 72 • C for 10 min before storage at 12 • C [55,56]. The PCR products were detected by electrophoresis and sent to BGI Genomics Co., Ltd., Shenzhen, China, for purification and sequencing [57].…”

Section: Species Identificationmentioning

confidence: 99%

Macrofungal Diversity and Distribution Patterns in the Primary Forests of the Shaluli Mountains

Han

Zhang

et al. 2023

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The Shaluli Mountains are located in the southeastern part of the Tibetan Plateau at an elevation of 2500–5000 m. They are characterized by a typical vertical distribution of climate and vegetation and are considered a global biodiversity hotspot. We selected ten vegetation types at different elevation gradients representing distinct forests in the Shaluli Mountains to assess the macrofungal diversity, including subalpine shrub, Pinus spp., Populus spp., Pinus spp. and Quercus spp., Quercus spp., Abies spp., Picea spp. and Abies spp., Picea spp., Juniperus spp., and alpine meadow. In total, 1654 macrofungal specimens were collected. All specimens were distinguished by morphology and DNA barcoding, resulting in the identification of 766 species belonging to 177 genera in two phyla, eight classes, 22 orders, and 72 families. Macrofungal species composition varied widely among vegetation types, but ectomycorrhizal fungi were predominant. In this study, the analysis of observed species richness, the Chao1 diversity index, the invsimpson diversity index, and the Shannon diversity index revealed that the vegetation types with higher macrofungal alpha diversity in the Shaluli Mountains were composed of Abies, Picea, and Quercus. The vegetation types with lower macrofungal alpha diversity were subalpine shrub, Pinus spp., Juniperus spp., and alpine meadow. The results of curve-fitting regression analysis showed that macrofungal diversity in the Shaluli Mountains was closely related to elevation, with a trend of increasing and then decreasing with rising elevation. This distribution of diversity is consistent with the hump-shaped pattern. Constrained principal coordinate analysis based on Bray–Curtis distances indicated that macrofungal community composition was similar among vegetation types at similar elevations, while vegetation types with large differences in elevation differed significantly in macrofungal community composition. This suggests that large changes in elevation increase macrofungal community turnover. This study is the first investigation of the distribution pattern of macrofungal diversity under different vegetation types in high-altitude areas, providing a scientific basis for the conservation of macrofungal resources.

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“…These specimens were collected in the field following photographic documentation. Microscopic exminations and measurements were carried out using a Leica DM5000B microscope, following procedures described by Li et al (2022). The dimensions of microscopic features, including spores and basidia, were determined in Melzer's reagent solution based on more than 20 measurements for each feature.…”

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“…Cystoderma japonicum is different from C. yongpingense, for its yellow-ochre to orange-yellow pileus and inamyloid ellipsoid basidiospores measuring 4-5 × 2.5-3.5 μm (Saar et al, 2009). In China, C. japonicum has been documented in Sich-uan and Gansu Provinces, where it is commonly found in coniferous and broad-leaved forests (Li et al, 2022).…”

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confidence: 99%

Cystoderma yongpingense sp. nov. (Squamanitaceae, Agaricales) a new species from southwestern China

Feng,

Sun,

Fang

et al. 2024

Mycoscience

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The genus Cystoderma Fayod was established by Fayod in 1889 (Fayod, 1889), and later C. amianthinum (Scop.) Fayod was designated as the type species by Smith andSinger in 1945 (Smith &Singer, 1945). This genus is characterized by distinctive features in its basidiocarps, such as the globose cellular structure in the veil tissues, the weakly to strongly amyloid basidiospores, and a variable annulus on the stipe which can be either evanescent and floccose-scaly or persistent and membranous (Saar, 2012). These basidiocarps are commonly found in habitats like moss, forest litter, or decaying wood beneath coniferous or broadleaved trees (Saar et al., 2016).The genus Cystoderma, originally classified under the Lepiota section of the Agaricus by Persoon in 1797 (Persoon, 1797), has undergone significant taxonomic revisions over the years. In 1945, Smith and Singer published the first monograph on the genus, categorizing the taxa into two distinct sections: Granulosa and Amianthina (Smith & Singer, 1945). However, in 1962, Singer renamed the Amianthina section to Cystoderma (Singer, 1962). Later, in 2002, after assessing the taxonomic significance of spore amyloidity in the genus Cystoderma, Harmaja (2002) took into account the findings from research on the nuclear DNA content of specific species (Saar & Kullman, 2000) and the phylogenetic analysis of nucLSU data (Moncalvo et al., 2002), further classifying Cystoderma into two genera: Cystoderma, which is placed in the family Squamanitaceae, and Cystodermella, whose phylogenetic position remains unknown for the time being (Liu et al., 2021).During the course of researching macrofungi in southwestern China, we discovered a Cystoderma species with distinct light orange-red to orange-red coloration. The specimen was collected from a broadleaf forest in Yongping County, Yunnan Province. We have identified it as a new species based on morphological characteristics and molecular analyses.The specimens have been deposited at the Kunming Edible Fungi Institute of All China Federation of Supply and Marketing Cooperatives, Kunming, China (KEF). These specimens were collected in the field following photographic documentation. Microscopic exminations and measurements were carried out using a Leica DM5000B microscope, following procedures described by Li et al. (2022). The dimensions of microscopic features, including spores and basidia, were determined in Melzer's reagent solution based on more than 20 measurements for each feature. Molecular and phylogenetic analysesDNA was extracted from dried specimens using a BEIWO Fungal gDNA Isolation Kit (Biomiga, China) according to the manufacturer's instructions with some modifications. The ITS region was amplified using ITS4 and ITS5 primers (White et al., 1990), while the nrLSU region was amplified using LROR (Cubeta et al., 1991) and LR5 primers (Vilgalys &Hester, 1990). PCR products were

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A review of Cystoderma (Agaricales/Basidiomycota) from China with four new species and two new records

Cited by 4 publications

References 19 publications

A New Species Agrocybe striatipes, also a Newly Commercially Cultivated Mushroom with Highly Nutritional and Healthy Values

A New Species Agrocybe striatipes, also a Newly Commercially Cultivated Mushroom with Highly Nutritional and Healthy Values

Macrofungal Diversity and Distribution Patterns in the Primary Forests of the Shaluli Mountains

<i>Cystoderma yongpingense</i> sp. nov. (<i>Squamanitaceae, Agaricales</i>) a new species from southwestern China

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