Tremellales

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Jack W. Fell - One of the best experts on this subject based on the ideXlab platform.

  • Cryptococcus Vuillemin (1901)
    The Yeasts, 2011
    Co-Authors: Alvaro Fonseca, Teun Boekhout, Jack W. Fell
    Abstract:

    Publisher Summary This chapter discusses the genus Cryptococcus. In the determination of the asexual reproduction it is seen that cells are spheroidal, ovoid, ellipsoidal, or elongate. A polysaccharide capsule is present in most species. Reproduction is by multilateral or polar, enteroblastic budding; pseudohyphae or true hyphae may develop. In species with true hyphae, septa have dolipores with or without parenthesomes. In the sexual reproduction it is found that some species are anamorphic states of teleomorphic genera in the Cystofilobasidiales, Filobasidiales, and Tremellales. The chapter also discusses physiology/biochemistry and phylogenetic placement of the genus. The type species taken is Cryptococcus neoformans. In the systematic discussion of the species phylogenetic placement, growth on malt extract, soytone, yeast extract (MYP) agar, growth in YM broth, Dalmau plate culture on corn meal agar, gene sequence accession numbers, type strain, origin of the strains studied, and systematics are determined.

  • kwoniella mangroviensis gen nov sp nov Tremellales basidiomycota a teleomorphic yeast from mangrove habitats in the florida everglades and bahamas
    Fems Yeast Research, 2008
    Co-Authors: Adele Statzelltallman, Carmela Belloch, Jack W. Fell
    Abstract:

    Mangrove forests inhabit the shoreline regions of tropical and subtropical marine habitats, where they are the basis of a multi-trophic level food web that drives the shellfish and fisheries industries. Yeasts, and other fungi, have significant roles in these ecosystems as they decompose plant organic material and serve as a food source for small invertebrates. Studies designed to examine yeast communities of mangrove regions of the Florida Everglades and the Bahamas demonstrated the repeated presence of an undescribed teleomorphic basidiomycetous yeast. The yeast is heterothallic, with a sexual cycle that can be observed on artificial media. Mating between compatible pairs produces polymorphic basidia. Some basidia are globose, ovoid or lageniform, with longitudinal to oblique and transverse septa, whereas other basidia are navicular with one to three transverse septa. Basidiocarps and ballistoconidia are absent. Molecular sequence analysis of a partial region (D1/D2 domains) of the large subunit rRNA demonstrated that the yeast is phylogenetically distinct from other teleomorphic Tremellales with close relationships to the anamorphic species Cryptococcus dejecticola, Cryptococcus bestiolae and Bullera dendrophila. The molecular and phenotypic data indicate that this teleomorph should be classified in a novel genus. Therefore, Kwoniella mangroviensis gen. nov., sp. nov. (Type strain CBS 8507), is proposed.

  • auriculibuller fuscus gen nov sp nov and bullera japonica sp nov novel taxa in the Tremellales
    International Journal of Systematic and Evolutionary Microbiology, 2004
    Co-Authors: José Paulo Sampaio, Mario Gadanho, Joao Inacio, Isabel Spencermartins, Alvaro Fonseca, Gloria Scorzetti, Jack W. Fell
    Abstract:

    Seven phylloplane yeast strains that were collected in the Arrabida Natural Park, Portugal, and identified preliminarily as Bullera alba, the anamorphic stage of Bulleromyces albus, were investigated. In contrast to Bulleromyces albus, these isolates produced a brownish pigment when grown on potato dextrose agar. The pigment caused darkening of the cultures and diffused into the culture medium. Mating studies revealed that the Arrabida isolates did not react with the different mating types of Bulleromyces albus, but were sexually compatible with them and produced mycelium with clamp connections, haustoria and transversally septate basidia that ejected the basidiospores. Various taxonomic criteria that were evaluated during the present study and comparison with other sexual taxa of the Tremellales indicated that this teleomorph should be classified in a novel genus. Therefore, Auriculibuller fuscus gen. nov., sp. nov. (type strain, PYCC 5690T=CBS 9648T) is proposed. In addition, during the course of this investigation, a member of a novel Bullera species, Bullera japonica sp. nov. (type strain, PYCC 4534T=CBS 2013T), was found among collection isolates that were identified formerly as Bullera alba. In molecular phylogenetic analysis of the D1/D2 domains of the 26S rDNA and the internal transcribed spacer region, the two taxa were found to be closely related, but distinct at the species level.

  • Systematics of basidiomycetous yeasts: a comparison of large subunit D1/D2 and internal transcribed spacer rDNA regions
    Fems Yeast Research, 2002
    Co-Authors: Gloria Scorzetti, Alvaro Fonseca, Jack W. Fell, Adele Statzell-tallman
    Abstract:

    Basidiomycetous yeasts in the Urediniomycetes and Hymenomycetes were examined by sequence analysis in two ribosomal DNA regions: the D1/D2 variable domains at the 5′ end of the large subunit rRNA gene (D1/D2) and the internal transcribed spacers (ITS) 1 and 2. Four major lineages were recognized in each class: Microbotryum, Sporidiobolus, Erythrobasidium and Agaricostilbum in the Urediniomycetes; Tremellales, Trichosporonales, Filobasidiales and Cystofilobasidiales in the Hymenomycetes. Bootstrap support for many of the clades within those lineages is weak; however, phylogenetic analysis provides a focal point for in-depth study of biological relationships. Combined sequence analysis of the D1/D2 and ITS regions is recommended for species identification, while species definition requires classical biological information such as life cycles and phenotypic characterization.

  • Partial rRNA sequences in marine yeasts: a model for identification of marine eukaryotes.
    Molecular marine biology and biotechnology, 1992
    Co-Authors: Jack W. Fell, Adele Statzell-tallman, Michael Lutz, Cletus P. Kurtzman
    Abstract:

    The V3 variable region of the large subunit rRNA was examined for nucleotide sequence signatures as potential taxonomic tools. Data are presented on 117 species, representing 23 genera of basidiomycetous yeasts. The results of nucleotide sequence alignments indicate that strains within species have identical base sequences and that species may differ from one another by one to more than 100 base positions. Phylogenetic analyses of the alignments indicates relationships among species, including the prediction of synonymous species and the clustering of species belonging to the Ustilaginales and Tremellales. These results suggest that species-specific nucleotide sequences can be used for the development of techniques for population analyses of a variety of marine and other microeukaryotes.

Qiming Wang - One of the best experts on this subject based on the ideXlab platform.

  • Molecular Phylogenetic Analysis of Ballistoconidium-Forming Yeasts in Trichosporonales (Tremellomycetes): A Proposal for Takashimella gen. nov. and Cryptotrichosporon tibetense sp. nov.
    PLOS ONE, 2015
    Co-Authors: Long Wang, Qiming Wang
    Abstract:

    Bullera species in the Trichosporonales (Tremellomycetes, Agaricomycotina) are phylogenetically distinct from Bullera alba (teleomorph: Bulleromyces albus), the type species of Bullera that belongs to Tremellales. In the present study, the three Bullera species, namely Bullera formosensis, Bullera koratensis and Bullera lagerstroemiae, and Cryptococcus tepidarius belonging to the Trichosporonales are transferred into a new genus Takashimella gen. nov. (MycoBank No. MB 810672) based on sequence analysis of the small subunit (SSU) rRNA gene, the D1/D2 domains of large subunit (LSU) rRNA gene and the ITS+5.8S rRNA gene sequences. In addition, the genus Cryptotrichosporon is emended to accommodate a novel ballistoconidium-forming species of the Trichosporonales, which is named as Cryptotrichosporon tibetense (type strain CGMCC 2.02614T = CBS 10455T). The MycoBank number of this new species is MB 810688.

  • proposal of mingxiaea gen nov for the anamorphic basidiomycetous yeast species in the bulleribasidium clade Tremellales based on molecular phylogenetic analysis with six new combinations and four novel species
    International Journal of Systematic and Evolutionary Microbiology, 2011
    Co-Authors: Qiming Wang, Teun Boekhout, Bundit Fungsin, Takashi Nakase
    Abstract:

    The distinction and monophyletic property of the basidiomycetous yeast species in the Bulleribasidium clade of the order Tremellales was resolved by molecular phylogenetic analysis based on the combined sequences of the 18S rRNA gene, internal transcribed spacer (ITS) region including 5.8S rRNA gene and 26S rRNA gene D1/D2 domain. The addition to the clade of new anamorphic species identified among ballistoconidium-forming yeasts isolated from China confirmed and strengthened the separation of this clade from other clades or lineages in the order Tremellales. A new anamorphic genus, Mingxiaea gen. nov. (type species Mingxiaea variabilis comb. nov.) is therefore proposed to accommodate the anamorphic species in the Bulleribasidium clade. Six new combinations are proposed for the described species of this clade which were formerly assigned to the genus Bullera. Four novel species in the new genus were identified among 16 ballistoconidium-forming yeast strains isolated from plant leaves collected in Hainan province, southern China, by D1/D2 and ITS sequence analyses. The novel species are described as Mingxiaea sanyaensis sp. nov. (type strain SY-3.23T =AS 2. 3623T =CBS 11408T), Mingxiaea hainanensis (type strain WZS-8.13T =AS 2.4161T =CBS 11409T), Mingxiaea foliicola (type strain WZS-8.14T =AS 2.3518T =CBS 11407T) and Mingxiaea wuzhishanensis (type strain WZS-29.8T =AS 2.4163T =CBS 11411T).

  • Cryptococcus foliicola sp. nov. and Cryptococcus taibaiensis sp. nov., novel basidiomycetous yeast species from plant leaves
    Journal of General and Applied Microbiology, 2011
    Co-Authors: Qiming Wang, Teun Boekhout
    Abstract:

    A molecular taxonomic investigation performed on basidiomycetous yeast strains isolated from plant leaves collected in two areas of China revealed two novel species, Cryptococcus foliicola sp. nov. (type strain HS 23.3T = AS 2.2471T= CBS 9920T) and Cryptococcus taibaiensis sp. nov. (type strain ST 7.9T = AS 2.2444T= CBS 9919T), among the non ballistoconidium-forming strains producing cream-colored colonies. These new species differed markedly from closely related species in the internal transcribed spacer (ITS) and 26S rRNA D1/D2 region sequences. They clustered in a strongly supported clade represented by Cryptococcus victoriae in the Tremellales group in the phylogenetic trees drawn from ITS and D1/D2 sequences.

  • molecular phylogeny of basidiomycetous yeasts in the cryptococcus luteolus lineage Tremellales based on nuclear rrna and mitochondrial cytochrome b gene sequence analyses proposal of derxomyces gen nov and hannaella gen nov and description of eight n
    Fems Yeast Research, 2008
    Co-Authors: Qiming Wang
    Abstract:

    Phylogenetic relationships among the hymenomycetous yeasts in the Cryptococcus luteolus lineage of the Tremellales were examined based on sequence analyses of the 18S rRNA gene, 26S rRNA gene D1/D2 domain, internal transcribed spacer (ITS) region including 5.8S rRNA gene and mitochondrial cytochrome b gene. In addition to the Dioszegia clade, two clades represented by Bullera mrakii and Bullera sinensis, respectively, were revealed to be well-separated monophyletic groups in the lineage. These clades also exhibited distinguishable colony characters. Two new genera, Derxomyces gen. nov. (type species: Derxomyces mrakii comb. nov.) and Hannaella gen. nov. (type species: Hannaella sinensis comb. nov.), are proposed to accommodate the species in the B. mrakii and B. sinensis clades, respectively. Mainly based on D1/D2 and ITS sequence comparison, eight novel Derxomyces species were recognized from ballistoconidium-forming strains isolated from plant leaves. The new species and their type strains are as follows: Derxomyces boekhoutii (AS 2.3758 T = CBS 10824 T ), Derxomyces hainanensis (AS 2.3467 T = CBS 10820 T ), Derxomyces linzhiensis (AS 2.2668 T = CBS 10827 T ), Derxomyces pseudocylindrica (AS 2.3778 T = CBS 10826 T ), Derxomyces qinlingensis (AS 2.2446 T = CBS 10818 T ), Derxomyces simaoensis (AS 2.3571 T = CBS 10822 T ), Derxomyces wuzhishanensis (AS 2.3760 T = CBS 10825 T ) and Derxomyces yunnanensis (AS 2.3562 T = CBS 10821 T ).

José Paulo Sampaio - One of the best experts on this subject based on the ideXlab platform.

  • 12 Tremellomycetes and Related Groups
    Systematics and Evolution, 2014
    Co-Authors: Michael Weiss, Robert Bauer, José Paulo Sampaio, Franz Oberwinkler
    Abstract:

    In this chapter, we present an overview of the Tremellomycetes, a basal group in the Agaricomycotina that contains Cystofilobasidiales, Filobasidiales, Holtermanniales, Trichosporonales, and Tremellales, and some possibly related taxa (Bartheletia, Wallemia). Tremellomycetes comprise mostly dimorphic species, which have both a monokaryotic yeast stage and a dikaryotic filamentous stage. The majority of species that produce macroscopically visible, mostly gelatinous basidiomes belong to the Tremellales; some belong to the Holtermanniales (Holtermannia) or Filobasidiales (Syzygospora). Only a yeast stage is known for many Tremellomycetes, which has hampered a coherent phylogenetic classification. Micromorphology in the Tremellomycetes is diverse, with basidial types ranging from longitudinally septate to transversely or obliquely septate to holobasidiate. We review the state of knowledge of the morphology, ultrastructure, and ecology of Tremellomycetes and discuss their phylogenetic relationships, complemented by a comprehensive molecular phylogenetic analysis, including most of the species for which sequence data are available.

  • Auriculibuller Sampaio & Fonseca (2004)
    The Yeasts, 2011
    Co-Authors: José Paulo Sampaio
    Abstract:

    Publisher Summary This chapter discusses the genus Auriculibuller. It provides a systematic discussion of the species and concludes with comments on the genus. The diagnosis of the genus is done on the basis of asexual, sexual, physiology, and biochemistry, and phylogenetic placement. In asexual reproduction yeast cells are ovoid or elongate, and budding is multilateral or polar. Ballistoconidia are formed and are rotationally symmetrical. Cultures are cream colored and become darker upon aging. In sexual reproduction the sexual structures are formed in the filamentous state and the hyphae have clamp connections and form haustorial branches. The sexual state has only been observed in culture, and basidiocarps are not formed. Basidia are usually transversely septate, occasionally longitudinally septate, and arranged in small clusters or in pairs. The basidiospores are produced at the apex of tubular sterigmata and are forcibly discharged. They are globose, rotationally symmetrical, and germinate by budding or repetition. The salient features of Auriculibuller are the formation of transversely septate basidia and its phylogenetic affiliation with the Tremellales. This type of basidial formation is rare in the Tremellales as most sexual species (e.g., those classified in the genera Bulleromyces, Fibulobasidium, Tremella, or Trimorphomyces) produce basidia of the Tremella type, i.e., they have subglobose to pyriform basidia that are longitudinally or obliquely cruciate-septate.

  • auriculibuller fuscus gen nov sp nov and bullera japonica sp nov novel taxa in the Tremellales
    International Journal of Systematic and Evolutionary Microbiology, 2004
    Co-Authors: José Paulo Sampaio, Mario Gadanho, Joao Inacio, Isabel Spencermartins, Alvaro Fonseca, Gloria Scorzetti, Jack W. Fell
    Abstract:

    Seven phylloplane yeast strains that were collected in the Arrabida Natural Park, Portugal, and identified preliminarily as Bullera alba, the anamorphic stage of Bulleromyces albus, were investigated. In contrast to Bulleromyces albus, these isolates produced a brownish pigment when grown on potato dextrose agar. The pigment caused darkening of the cultures and diffused into the culture medium. Mating studies revealed that the Arrabida isolates did not react with the different mating types of Bulleromyces albus, but were sexually compatible with them and produced mycelium with clamp connections, haustoria and transversally septate basidia that ejected the basidiospores. Various taxonomic criteria that were evaluated during the present study and comparison with other sexual taxa of the Tremellales indicated that this teleomorph should be classified in a novel genus. Therefore, Auriculibuller fuscus gen. nov., sp. nov. (type strain, PYCC 5690T=CBS 9648T) is proposed. In addition, during the course of this investigation, a member of a novel Bullera species, Bullera japonica sp. nov. (type strain, PYCC 4534T=CBS 2013T), was found among collection isolates that were identified formerly as Bullera alba. In molecular phylogenetic analysis of the D1/D2 domains of the 26S rDNA and the internal transcribed spacer region, the two taxa were found to be closely related, but distinct at the species level.

  • cryptococcus paraflavus sp nov Tremellales isolated from steppe plants in russia
    Journal of General and Applied Microbiology, 2004
    Co-Authors: Wladyslav I. Golubev, José Paulo Sampaio, Mario Gadanho, Ellen W Golubeva
    Abstract:

    Three strains related to Cryptococcus flavus were isolated from plants collected in the Prioksko-terrasny biosphere reserve (Russia). Physiological characterization, mycocinotyping, sequencing of the D1/D2 domain of the 26S rDNA and the ITS region revealed their separate taxonomic position. The name Cryptococcus paraflavus is proposed to accommodate these isolates (type strain VKM Y-2923).

  • cryptococcus nemorosus sp nov and cryptococcus perniciosus sp nov related to papiliotrema sampaio et al Tremellales
    International Journal of Systematic and Evolutionary Microbiology, 2003
    Co-Authors: Wladyslav I. Golubev, José Paulo Sampaio, Mario Gadanho, Nikita W Golubev
    Abstract:

    Three mycocinogenic strains representing the genus Cryptococcus were isolated on glucuronate agar from plants and turf collected in the Prioksko-terrasny biosphere reserve (Russia). These isolates fit the standard description of Cryptococcus laurentii, but differ from its type strain in both their mycocin-sensitivity profiles and the killing patterns of their mycocins. Sequence analyses of the D1/D2 domain of the 26S rDNA and of the internal transcribed spacer region confirmed that these isolates represent two novel species, for which the names Cryptococcus nemorosus sp. nov. (type strain VKM Y-2906T) and Cryptococcus perniciosus sp. nov. (type strain VKM Y-2905T) are proposed. Morphological, physiological and biochemical characteristics, as well as mycocinotyping and molecular analysis, show a close affinity between these two novel anamorphic species and the teleomorphic species Papiliotrema bandonii (Tremellales).

Mats Wedin - One of the best experts on this subject based on the ideXlab platform.

  • an old familiar face tremella anaptychiae sp nov Tremellales basidiomycota
    Phytotaxa, 2017
    Co-Authors: Juan Carlos Zamora, Paul Diederich, Ana M Millanes, Mats Wedin
    Abstract:

    Tremella anaptychiae , a lichenicolous fungus growing on Anaptychia ciliaris , is described as new. Both morphological and molecular data (DNA sequences from the ITS and 28S regions) are used to characterize and distinguish it from other Tremella s. l. species. Tremella anaptychiae is closely related to T. parmeliarum but comparatively distantly related to other previously recognized lichenicolous species groups.

  • tremella cetrariellae Tremellales basidiomycota fungi a new lichenicolous fungus on cetrariella delisei
    Lichenologist, 2015
    Co-Authors: Ana M Millanes, Paul Diederich, Martin Westberg, E Pippola, Mats Wedin
    Abstract:

    Tremella cetrariellae (Tremellales, Basidiomycota, Fungi), a new lichenicolous species on Cetrariella delisei

  • tremella rhizocarpicola sp nov and other interesting lichenicolous Tremellales and filobasidiales in the nordic countries
    MycoKeys, 2014
    Co-Authors: Ana M Millanes, Paul Diederich, Martin Westberg, Tommy Knutsson, Mats Wedin
    Abstract:

    New data on the diversity and geographical distribution of lichenicolous Tremellales and Filobasidiales in the Nordic countries is presented. One new species, Tremella rhizocarpicola, is formally described. Tremella pertusariae and T. protoparmeliae are reported as new to the Nordic countries, Syzygospora physciacearum is new to Iceland, Tremella rinodinae is new to Sweden, and T. caloplacae is new to Norway. Nine species are reported as new to a number of Swedish provinces, including Biatoropsis usnearum, Syzygospora bachmannii, S. physciacearum, Tremella caloplacae, T. cetrariicola, T. cladoniae, T. coppinsii, T. diploschistina, and T. hypogymniae.

  • tremella diploschistina Tremellales basidiomycota fungi a new lichenicolous species growing on diploschistes
    Lichenologist, 2012
    Co-Authors: Ana M Millanes, Martin Westberg, Mats Wedin, Paul Diederich
    Abstract:

    Several specimens of a lichen-inhabiting Tremella, inducing the formation of pale yellow, dark brown or black galls on species of Diploschistes, have been collected in three localities in Sweden and in one locality in the USA. Morphological and molecular studies confirm that this material represents a single species, which differs from other described Tremella species in the combination of gall morphology, basidium morphology, basidium and basidiospore sizes, presence of thick-walled hyphidia, and a different host-selection. We consequently describe this fungus asTremella diploschistina sp. nov., on the basis of morphology and phylogenetic analyses of ITS and nLSU sequences. The phylogenetic analyses reveal that the fungus clearly belongs inTremella, although the relationships with other species in the genus remain unclear.

  • Phylogeny and character evolution in the jelly fungi (Tremellomycetes, Basidiomycota, Fungi)
    Molecular Phylogenetics and Evolution, 2011
    Co-Authors: Ana M Millanes, Paul Diederich, Stefan Ekman, Mats Wedin
    Abstract:

    The Tremellomycetes (Agaricomycotina, Basidiomycota, Fungi) are a nutritionally heterogeneous group comprising saprotrophs, animal parasites, and fungicolous species (fungal-inhabiting, including lichen-inhabiting). The relationships of many species, particularly those with a lichenicolous habit, have never been investigated by molecular methods. We present a phylogeny of the Tremellomycetes based on three nuclear DNA ribosomal markers (nSSU, 5.8S and nLSU), representing all main taxonomic groups and life forms, including lichenicolous taxa. The Cystofilobasidiales, Filobasidiales, Holtermanniales, and Tremellales (including the Trichosporonales) are recovered as monophyletic, but this is not the case for the Tremellomycetes. We suggest, however, that the Cystofilobasidiales tentatively continue to be included in the Tremellomycetes. As currently circumscribed, the Filobasidiaceae, Sirobasidiaceae, Syzygosporaceae and Tremellaceae are non-monophyletic. Cuniculitremaceae, Sirobasidiaceae and Tetragoniomycetaceae are nested within Tremellaceae. The lichenicolous species currently included within the Tremellomycetes belong in this group, distributed across the Filobasidiales and Tremellales. Lichen-inhabiting taxa do not form a monophyletic group; they are distributed in several clades and sometimes intermixed with taxa of other nutritional habits. Character state reconstruction indicates that two morphological traits claimed to characterize groups in the Tremellomycetes (the basidium habit and basidium septation) are highly homoplastic. Comparative phylogenetic methods suggest that the transitions between single and catenulate basidia in the Tremellales are consistent with a punctuational model of evolution whereas basidium septation is likely to have evolved under a graduational model in the clade comprising the Holtermanniales, Filobasidiales, and Tremellales.

Teun Boekhout - One of the best experts on this subject based on the ideXlab platform.

  • Bandoniozyma gen. nov., a Genus of Fermentative and Non-Fermentative Tremellaceous Yeast Species
    PLoS ONE, 2012
    Co-Authors: Patricia Valente, F.c. Pagnocca, Teun Boekhout, Juliana Crestani, Lara Durães Sette, Michel Rodrigo Zambrano Passarini, Carlos Augusto Rosa, Luciana R. Brandão, Melissa F. Landell, Raphael S. Pimenta
    Abstract:

    BACKGROUND: Independent surveys across the globe led to the proposal of a new basidiomycetous yeast genus within the Bulleromyces clade of the Tremellales, Bandoniozyma gen. nov., with seven new species.\n\nMETHODOLOGY/PRINCIPAL FINDINGS: The species were characterized by multiple methods, including the analysis of D1/D2 and ITS nucleotide sequences, and morphological and physiological/biochemical traits. Most species can ferment glucose, which is an unusual trait among basidiomycetous yeasts.\n\nCONCLUSIONS/SIGNIFICANCE: In this study we propose the new yeast genus Bandoniozyma, with seven species Bandoniozyma noutii sp. nov. (type species of genus; CBS 8364(T) = DBVPG 4489(T)), Bandoniozyma aquatica sp. nov. (UFMG-DH4.20(T) = CBS 12527(T) = ATCC MYA-4876(T)), Bandoniozyma complexa sp. nov. (CBS 11570(T) = ATCC MYA-4603(T) = MA28a(T)), Bandoniozyma fermentans sp. nov. (CBS 12399(T) = NU7M71(T) = BCRC 23267(T)), Bandoniozyma glucofermentans sp. nov. (CBS 10381(T) = NRRL Y-48076(T) = ATCC MYA-4760(T) = BG 02-7-15-015A-1-1(T)), Bandoniozyma tunnelae sp. nov. (CBS 8024(T) = DBVPG 7000(T)), and Bandoniozyma visegradensis sp. nov. (CBS 12505(T) = NRRL Y-48783(T) = NCAIM Y.01952(T)).

  • proposal of mingxiaea gen nov for the anamorphic basidiomycetous yeast species in the bulleribasidium clade Tremellales based on molecular phylogenetic analysis with six new combinations and four novel species
    International Journal of Systematic and Evolutionary Microbiology, 2011
    Co-Authors: Qiming Wang, Teun Boekhout, Bundit Fungsin, Takashi Nakase
    Abstract:

    The distinction and monophyletic property of the basidiomycetous yeast species in the Bulleribasidium clade of the order Tremellales was resolved by molecular phylogenetic analysis based on the combined sequences of the 18S rRNA gene, internal transcribed spacer (ITS) region including 5.8S rRNA gene and 26S rRNA gene D1/D2 domain. The addition to the clade of new anamorphic species identified among ballistoconidium-forming yeasts isolated from China confirmed and strengthened the separation of this clade from other clades or lineages in the order Tremellales. A new anamorphic genus, Mingxiaea gen. nov. (type species Mingxiaea variabilis comb. nov.) is therefore proposed to accommodate the anamorphic species in the Bulleribasidium clade. Six new combinations are proposed for the described species of this clade which were formerly assigned to the genus Bullera. Four novel species in the new genus were identified among 16 ballistoconidium-forming yeast strains isolated from plant leaves collected in Hainan province, southern China, by D1/D2 and ITS sequence analyses. The novel species are described as Mingxiaea sanyaensis sp. nov. (type strain SY-3.23T =AS 2. 3623T =CBS 11408T), Mingxiaea hainanensis (type strain WZS-8.13T =AS 2.4161T =CBS 11409T), Mingxiaea foliicola (type strain WZS-8.14T =AS 2.3518T =CBS 11407T) and Mingxiaea wuzhishanensis (type strain WZS-29.8T =AS 2.4163T =CBS 11411T).

  • Cryptococcus foliicola sp. nov. and Cryptococcus taibaiensis sp. nov., novel basidiomycetous yeast species from plant leaves
    Journal of General and Applied Microbiology, 2011
    Co-Authors: Qiming Wang, Teun Boekhout
    Abstract:

    A molecular taxonomic investigation performed on basidiomycetous yeast strains isolated from plant leaves collected in two areas of China revealed two novel species, Cryptococcus foliicola sp. nov. (type strain HS 23.3T = AS 2.2471T= CBS 9920T) and Cryptococcus taibaiensis sp. nov. (type strain ST 7.9T = AS 2.2444T= CBS 9919T), among the non ballistoconidium-forming strains producing cream-colored colonies. These new species differed markedly from closely related species in the internal transcribed spacer (ITS) and 26S rRNA D1/D2 region sequences. They clustered in a strongly supported clade represented by Cryptococcus victoriae in the Tremellales group in the phylogenetic trees drawn from ITS and D1/D2 sequences.

  • Cryptococcus Vuillemin (1901)
    The Yeasts, 2011
    Co-Authors: Alvaro Fonseca, Teun Boekhout, Jack W. Fell
    Abstract:

    Publisher Summary This chapter discusses the genus Cryptococcus. In the determination of the asexual reproduction it is seen that cells are spheroidal, ovoid, ellipsoidal, or elongate. A polysaccharide capsule is present in most species. Reproduction is by multilateral or polar, enteroblastic budding; pseudohyphae or true hyphae may develop. In species with true hyphae, septa have dolipores with or without parenthesomes. In the sexual reproduction it is found that some species are anamorphic states of teleomorphic genera in the Cystofilobasidiales, Filobasidiales, and Tremellales. The chapter also discusses physiology/biochemistry and phylogenetic placement of the genus. The type species taken is Cryptococcus neoformans. In the systematic discussion of the species phylogenetic placement, growth on malt extract, soytone, yeast extract (MYP) agar, growth in YM broth, Dalmau plate culture on corn meal agar, gene sequence accession numbers, type strain, origin of the strains studied, and systematics are determined.

  • Cryptococcus spencermartinsiae sp. nov., a basidiomycetous yeast isolated from glacial waters and apple fruits.
    International journal of systematic and evolutionary microbiology, 2009
    Co-Authors: Virginia De García, Teun Boekhout, Diego Libkind, Silvia Brizzio, Gabriel Russo, Carlos A Rosa, Bart Theelen, María Van Broock
    Abstract:

    Seven strains representing a novel yeast species belonging to the genus Cryptococcus were isolated from different substrates from Patagonia, Argentina, and The Netherlands. Three strains were isolated from a meltwater river draining from the Frias glacier at Mount Tronador situated in Nahuel Huapi National Park (Patagonia) and four were isolated from apple surfaces in Randwijk, The Netherlands. Analysis of the D1/D2 large-subunit rRNA gene and ITS region sequences indicated that these strains represent a single species that is distinct from other species of the Tremellales clade. The name Cryptococcus spencermartinsiae sp. nov. is proposed to accommodate these strains. The type strain is CRUB 1230(T) (=CBS 10760(T) =DBVPG 8010(T)).

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