Mycena

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R Maas A Geesteranus - One of the best experts on this subject based on the ideXlab platform.

A. Aronsen - One of the best experts on this subject based on the ideXlab platform.

  • Two new Mycenas of section fragilipedes from southern Norway
    2016
    Co-Authors: A. Aronsen
    Abstract:

    Mycena austera and Mycenaparca, belonging to section Fragilipedes, are proposed as new species. Mycena austera is identified mainly by the 4-spored basidia, the absence of clamp connections, the dark pileus, and the nitrous odour. The species is compared with M. leptoce-phala and M. deceptor. Mycena parca is compared with M. leptocephala from which it dif-fers mainly on account ofthe absence of nitrous odour, and differently shaped cheilocystidia and terminal cells of the cortical layer of the stipe. Mycena austera Aronscn, spec. nov. — Figs. 1-7 Pileus usque ad 20 mm latus, vulgo umbonatus, obscure griseus. Caro odore nitroso. Lamellae 26-30 stipitem attingentes, adscendentes, grisae. Stipes-50 x 3 mm, glaber, griseolus. Basidia 29-35 x 8-9 pm, clavata, 4-sporigera. Sporae 9.3—11(—12.5) x 5.1-6.5 pm, amyloideae. Cheilocystidia 50-103 x 13-24 x 3.5-6.5 pm, fusiformia. Pleurocystidia similia. Trama lamellarum Melzeri reagente vinescens. Ilyphae pileipellis 2.7-6.3 pm latae, diverticulatae, subgelatinosae, cellulae terminates varieformes. Hyphae stipitipellis 1.8-2.5 pm latae, leves vel diverticulatae, haud gelatinosae, caulocystidia 2.5-10 pm latae, crasse diverticulata

  • Mycena ustalis, a new species from southern Norway
    2016
    Co-Authors: A. Aronsen, Ttfnsberg Norway
    Abstract:

    Mycena ustalis, a member of section Fragilipedes and collected in southern Norway, is proposed as a new species. It is compared with some other members of the section. Mycena ustalis Aronsen & Maas G., spec, nov.* * — Figs. 1-13 Basidiomata gregaria vel cespitosa. Pileus usque ad 28 mm latus, conicus vel campanulatus,haud sulcatus, margine translucente striatus, udus centro niger vel atrobrunneus, margine brunneus. Caro tenuis, odore alca-lino. Lamellae 16-22 stipitem attingentes,e albido obscure griseae. Stipes-45 x 4-5 mm, initio ardesiacus, pallescens, basi fibrillis albis munitus. Basidia 25-35 x 6.5-8 um, anguste clavata, 2-spora efibulataque vel 30-45 x 8-9 um, 4-spora fibula-taque. Sporae (basidiorum 2-sp.) (7.6-)9.0-11.8x (5.0-)6.0-7.2(-8.1)pm vel (basidiorum4-sp.) 7.6-9.0 x 5.4-5.6 pm, amyloideae. Cheilocystidia 20-60 x 7-15 pm, clavata vel fusiformia, efibulata vel fibulata, levia. Pleurocystidia similia,haud numerosa.Trama lamellarum iodi ope brunneovinescens. Holotypus: 'Fungi norvegici / Mycena ustalis Aronsen & Maas G. / 2-sp. /A. Aronsen A 73188 /8 Oct

  • Mycena juniperina a new member of section supinae from norway
    Persoonia, 1996
    Co-Authors: A. Aronsen
    Abstract:

    Mycena juniperina, collected on bark of Juniperus in southern Norway, is proposed as a new species belonging to section Supinae. It is compared with the other species of the section, from which it is separated on account of the habitat, the pale brown colours of the pileus and the stipe, and some details in the microscopic features.

  • Mycena terena a new member of section polyadelphia from southern norway
    Persoonia, 1992
    Co-Authors: A. Aronsen, R Maas A Geesteranus
    Abstract:

    Mycena terena is proposed as a new species belonging to section Polyadelphia. It deviates from other members of this section on account of its smooth cheilocystidia.

Dennis E Desjardin - One of the best experts on this subject based on the ideXlab platform.

  • new species and records of bioluminescent Mycena from mexico
    Mycologia, 2019
    Co-Authors: Alonso Cortesperez, Dennis E Desjardin, Brian A Perry, Virginia Ramirezcruz, Florencia Ramirezguillen, Alma R Villalobosarambula, Alan Rockefeller
    Abstract:

    ABSTRACTSeven species of bioluminescent fungi are recorded from the cloud forests in Mexico. Six represent new species belonging to the genus Mycena, whereas Mycena globulispora is a new distributi...

  • New species and records of bioluminescent Mycena from Mexico
    2019
    Co-Authors: Alonso Cortés-pérez, Dennis E Desjardin, Brian A Perry, Virginia Ramírez-cruz, Florencia Ramírez-guillén, Alma R. Villalobos-arámbula, Alan Rockefeller
    Abstract:

    Seven species of bioluminescent fungi are recorded from the cloud forests in Mexico. Six represent new species belonging to the genus Mycena, whereas Mycena globulispora is a new distribution record for the country. Descriptions, illustrations, photographs, and an identification key to bioluminescent fungi species from Mexico are provided. Sequences of nuc rDNA internal transcribed spacer (ITS1-5.8S-ITS2 = ITS) region were generated for barcoding purposes and comparisons with similar species.

  • the genus Mycena basidiomycota agaricales Mycenaceae and allied genera from republic of sao tome and principe west africa
    Phytotaxa, 2018
    Co-Authors: Alexandra C Cooper, Dennis E Desjardin, Brian A Perry
    Abstract:

    Limited research has been published on the mushroom-forming basidiomycetous fungi of the oceanic islands Sao Tome and Principe, West Africa. Based on field work in April 2006 and 2008, which generated 24 specimens of mycenoid fungi, we recognize 14 species of Mycena , and 5 species belonging to the allied genera Clitocybula , Filoboletus , Hydropus and “ Trogia ”. Of these, 9 species are recognized herein as new to science, viz., Mycena antennae, M. brunneoviolacea, M. longinqua, M. oboensis, M. phaeonox, M. solis, Clitocybula intervenosa, Hydropus globosporus, and H. murinus ; an additional 10 species are new distribution reports for Sao Tome and Principe. Species delimitations are based on comprehensive morphological descriptions and molecular sequence (nLSU, ITS) data. Line drawings of salient micromorphological features, colour photographs of basidiomata, comparisons with allied taxa, a key to aid in identification, and phylogenetic inferences are provided.

  • new species of Mycena basidiomycota agaricales from california
    Phytotaxa, 2016
    Co-Authors: Brian A Perry, Dennis E Desjardin
    Abstract:

    Two new species of Mycena are described from California: Mycena nivicola , a spring taxon from the High Sierra Nevada and Cascade Ranges is proposed within section Hygrocyboideae , and M. bulliformis from the Coastal Ranges and Sierra Nevada Foothills is proposed in section Rubromarginatae . Both species are fully described, illustrated, and compared with similar and/or closely related taxa.

  • Bioluminescent fungi from Peninsular Malaysia—a taxonomic and phylogenetic overview
    Fungal Diversity, 2015
    Co-Authors: Audrey L C Chew, Dennis E Desjardin, Md Yusoff Musa, Vikineswary Sabaratnam
    Abstract:

    Fifteen bioluminescent fungi recently collected from Peninsular Malaysia are analysed herein. The phylogeny of the Malaysian bioluminescent fungi and closely related taxa were evaluated with molecular data from the nuclear ribosomal large subunit (LSU), RNA polymerase 2 second largest subunit (RPB2) and internal transcribed spacers (ITS) gene regions. DNA sequences data support the circumscription of species based on the morphological species concept, but was unable to fully support the current sectional delimitation of genus Mycena . Of the 15 taxa analysed here, four are novel species described herein, viz. Mycena gombakensis , M. nocticaelum , M. coralliformis and Panellus luxfilamentus ; while four taxa of Mycena sect. Calodontes were recently described as new. One species ( M. noctilucens ) represents a new distribution record to Peninsular Malaysia, and six species ( Neonothopanus nambi , Filoboletus manipularis , P. luminescens , Roridomyces pruinosoviscidus, M. chlorophos and M. illuminans ) have been previously reported. Roridomyces pruinosoviscidus is accepted as a new combination based on morphological and phylogenetic data. Culture morphology data indicate its potential for taxon delimitation as axenic cultures of each species produced unique and distinguishable characteristics. Comprehensive descriptions, illustrations and photographs are provided on basidiome and culture morphology. A key to aid in species identification, comparisons with allied species and data on basidiome and mycelium luminescence are also provided. This study gives the first report on mycelial luminescence for M. noctilucens , P. luminescens , R. pruinosoviscidus as well as all new species described herein. The reports in this study bring the total known luminescent fungi worldwide to 81 species.

Vikineswary Sabaratnam - One of the best experts on this subject based on the ideXlab platform.

  • Bioluminescent fungi from Peninsular Malaysia—a taxonomic and phylogenetic overview
    Fungal Diversity, 2015
    Co-Authors: Audrey L C Chew, Dennis E Desjardin, Md Yusoff Musa, Vikineswary Sabaratnam
    Abstract:

    Fifteen bioluminescent fungi recently collected from Peninsular Malaysia are analysed herein. The phylogeny of the Malaysian bioluminescent fungi and closely related taxa were evaluated with molecular data from the nuclear ribosomal large subunit (LSU), RNA polymerase 2 second largest subunit (RPB2) and internal transcribed spacers (ITS) gene regions. DNA sequences data support the circumscription of species based on the morphological species concept, but was unable to fully support the current sectional delimitation of genus Mycena . Of the 15 taxa analysed here, four are novel species described herein, viz. Mycena gombakensis , M. nocticaelum , M. coralliformis and Panellus luxfilamentus ; while four taxa of Mycena sect. Calodontes were recently described as new. One species ( M. noctilucens ) represents a new distribution record to Peninsular Malaysia, and six species ( Neonothopanus nambi , Filoboletus manipularis , P. luminescens , Roridomyces pruinosoviscidus, M. chlorophos and M. illuminans ) have been previously reported. Roridomyces pruinosoviscidus is accepted as a new combination based on morphological and phylogenetic data. Culture morphology data indicate its potential for taxon delimitation as axenic cultures of each species produced unique and distinguishable characteristics. Comprehensive descriptions, illustrations and photographs are provided on basidiome and culture morphology. A key to aid in species identification, comparisons with allied species and data on basidiome and mycelium luminescence are also provided. This study gives the first report on mycelial luminescence for M. noctilucens , P. luminescens , R. pruinosoviscidus as well as all new species described herein. The reports in this study bring the total known luminescent fungi worldwide to 81 species.

  • four new bioluminescent taxa of Mycena sect calodontes from peninsular malaysia
    Mycologia, 2014
    Co-Authors: Audrey L C Chew, Dennis E Desjardin, Yee Shin Tan, Yusoff Musa, Vikineswary Sabaratnam
    Abstract:

    Three new species and one new variety of bioluminescent Mycena collected from Peninsular Malaysia are described herein. All new species belong to Mycena sect. Calodontes in what is known as the Mycena pura complex. Comprehensive descriptions, photographs, illustrations and comparisons with phenetically similar species are provided. Molecular sequences data from the nuclear internal transcribed spacers (ITS-1 and ITS-2, including the 5.8S rRNA) were used to infer relationships within sect. Calodontes. Axenic cultures were obtained to provide data on culture morphology. This is the first published photographic documentation of bioluminescent basidiomes of members of Mycena sect. Calodontes. Also, this addition brings the total known bioluminescent fungi to 77 species.

  • taxonomic and phylogenetic re evaluation of Mycena illuminans
    Mycologia, 2013
    Co-Authors: Audrey L C Chew, Dennis E Desjardin, Yee Shin Tan, Yusoff Musa, Vikineswary Sabaratnam
    Abstract:

    Mycena illuminans Henn. is described and re-evaluated based on recently collected material from peninsular Malaysia, providing comprehensive descriptions, illustrations and photographs. In addition to morphological data, axenic monokaryon and dikaryon cultures were established to provide data on culture morphology and the mating system of the species. Molecular sequences data from the nuclear large subunit (LSU) gene also are presented, confirming that M. illuminans is not a synonym of Mycena chlorophos.

Shunxing Guo - One of the best experts on this subject based on the ideXlab platform.

  • Revealing proteins associated with symbiotic germination of Gastrodia elata by proteomic analysis
    SpringerOpen, 2018
    Co-Authors: Xu Zeng, Hong Ling, Juan Chen, Shunxing Guo
    Abstract:

    Abstract Background Gastrodia elata, a mycoheterotrophic orchid, is a well-known medicinal herb. In nature, the seed germination of G. elata requires proper fungal association, because of the absence of endosperm. To germinate successfully, G. elata obtains nutrition from mycorrhizal fungi such as Mycena. However, Mycena is not able to supply nutrition for the further development and enlargement of protocorms into tubers, flowering and fruit setting of G. elata. To date, current genomic studies on this topic are limited. Here we used the proteomic approach to explore changes in G. elata at different stages of symbiotic germination. Results Using mass spectrometry, 3787 unique proteins were identified, of which 599 were classified as differentially accumulated proteins. Most of these differentially accumulated proteins were putatively involved in energy metabolism, plant defense, molecular signaling, and secondary metabolism. Among them, the defense genes (e.g., pathogenesis-/wound-related proteins, peroxidases, and serine/threonine-protein kinase) were highly expressed in late-stage protocorms, suggesting that fungal colonization triggered the significant defense responses of G. elata. Conclusions The present study indicated the metabolic change and defensive reaction could disrupt the balance between Mycena and G. elata during mycorrhizal symbiotic germination

  • molecular analysis of polysaccharide accumulation in dendrobium nobile infected with the mycorrhizal fungus Mycena sp
    RSC Advances, 2017
    Co-Authors: Lisi Zhou, Gang Ding, Shunxing Guo
    Abstract:

    Polysaccharides are among the most important active compounds of Dendrobium nobile Lindl., and they improve immunity, strengthen memory, and prevent and fight tumours. Evidence suggests that the mycorrhizal fungus Mycena sp. may increase the polysaccharide content of D. nobile. To understand the regulatory mechanism by which Mycena sp. promotes polysaccharide accumulation in D. nobile, a model including MF23 (Mycena sp.) and D. nobile was developed. Content measurements and electron microscopy showed that the change in polysaccharides was associated with the level of colonization. Large-scale transcriptome sequencing analyses of D. nobile infected with MF23 and of wild D. nobile revealed that 30 unigenes encoding key enzymes were potentially associated with polysaccharide accumulation. A qRT-PCR experiment involving 13 randomly chosen unigenes suggested that the combined effects of the carbohydrate biosynthesis and consumption pathways resulted in changes in polysaccharide levels. MF23 might increase polysaccharide level by inducing genes involved in photosynthesis (petF), starch and sucrose metabolism (SUS, bcsA, glgA) and fructose and mannose metabolism (PMM, GPMM) and by repressing genes involved in glycolysis (PGK, PFK) and the citrate cycle (PDHB, CS, SDHA). This study provides a good example of an endophyte promoting the synthesis of bioactive compounds in its host and paves the way for further investigations of the associated regulatory mechanism using molecular methods.

  • Transcriptomic analyses reveal clathrin-mediated endocytosis involved in symbiotic seed germination of Gastrodia elata
    SpringerOpen, 2017
    Co-Authors: Xu Zeng, Hong Ling, Sisi Liu, Mengmeng Liu, Juan Chen, Shunxing Guo
    Abstract:

    Abstract Background Gastrodia elata is a well-known medicinal orchid. In nature, the germination rate of G. elata is extremely poor, because there is no endosperm within the mature seed. It is crucial for G. elata to obtain nutrition from mycorrhizal fungi (Mycena) at the early-stage of germination. After germination, the seed gives rise to a protocorm. However, there are no “omic” studies on understanding the interaction between Gastrodia and Mycena. Here, we used transcriptomic approaches to explore changes in seed germination of G. elata. Results Based on RNA-Seq, a total of ~221 million clean reads were assembled denovo into 139,756 unigenes, including 42,140 unigenes that were annotated in public databases. Meanwhile, 1750 unigenes were identified as differentially expressed genes. Most of these differentially expressed genes were putatively involved in energy metabolism, plant defense, molecular signaling, and secondary metabolism. Additionally, numerous genes involved in clathrin-mediated endocytosis were identified from our data. Most of these genes (e.g., clathrin, adaptor protein, dynamin, HSC70) were basally expressed in seeds and highly expressed in protocorms. Conclusions Our data suggested that clathrin-mediated endocytosis could play important roles in symbiotic seed germination of G. elata with Mycena infections

  • Mycena sp a mycorrhizal fungus of the orchid dendrobium officinale
    Mycological Progress, 2012
    Co-Authors: Lichun Zhang, Juan Chen, Chuan Gao, Shunxing Guo
    Abstract:

    An endophytic fungus, F-23, was isolated from the roots of Dendrobium officinale Kimura et Migo, an endangered Chinese medicinal plant. The sequence of the ITS region indicated that the isolate belongs to the genus Mycena. After 4 months of inoculation, the root systems of D. officinale that were inoculated with F-23 fungus were much larger than the control’s root systems. We also observed that the hyphae of F-23 penetrated the epidermal cells within the host’s roots and spread from cell to cell. A large number of pelotons existed in the root cortical cells of D. officinale inoculated with F-23 fungus. Intracellular hyphae crossing through the host walls were also observed using SEM (scanning electron microscopy). In contrast, light microscopy and SEM showed that the transverse sections of the roots of control plants remained uncolonized. Therefore, the F-23 fungus can form mycorrhizal associations with the roots of its host plant, D. officinale, and enhance the growth of seedlings and roots. In brief, Mycena sp. was identified and shown to be a mycorrhizal fungus of the epiphytic orchid, D. officinale. This might be of potential use to the mass cultivation of D. officinale under artificial conditions.

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