Cryptococcus yokohamensis sp. nov., a basidiomycetous yeast isolated from trees and a Queensland koala kept in a Japanese zoological park

Alshahni, Mohamed Mahdi; Makimura, Koichi; Satoh, Kazuo; Nishiyama, Yayoi; Kido, Nobuhide; Sawada, Takuo

doi:10.1099/ijs.0.027144-0

Cited by 7 publications

(6 citation statements)

References 16 publications

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“…2015 ) and consists of ten Tremella species previously included in the mesenterica and fuciformis groups as distinguished by Chen (1998) . Additionally, Cryptococcus yokohamensis is included in this family based on previous phylogenetic results by Alshahni et al. (2011) and results from the analysis of the expanded LSU rRNA gene sequence dataset ( Fig.…”

Section: Taxonomymentioning

confidence: 99%

“…An anamorphic yeast species, Cryptococcus yokohamensis , was recently described and showed a close relationship to the Tremella species in the Tremella sensu stricto clade ( Alshahni et al. 2011 ).…”

Section: Taxonomymentioning

confidence: 99%

“…This species exhibits phenotypic characteristics similar to those of the yeast states of Tremella . Specifically, C. yokohamensis has two major coenzymes CoQ-9 and CoQ-10, being similar to T. mesenterica and T. coalescens ( Alshahni et al. 2011 ).…”

Section: Taxonomymentioning

confidence: 99%

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Towards an integrated phylogenetic classification of theTremellomycetes

Liu¹,

Wang²,

Göker³

et al. 2015

Studies in Mycology

400

356

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Families and genera assigned to Tremellomycetes have been mainly circumscribed by morphology and for the yeasts also by biochemical and physiological characteristics. This phenotype-based classification is largely in conflict with molecular phylogenetic analyses. Here a phylogenetic classification framework for the Tremellomycetes is proposed based on the results of phylogenetic analyses from a seven-genes dataset covering the majority of tremellomycetous yeasts and closely related filamentous taxa. Circumscriptions of the taxonomic units at the order, family and genus levels recognised were quantitatively assessed using the phylogenetic rank boundary optimisation (PRBO) and modified general mixed Yule coalescent (GMYC) tests. In addition, a comprehensive phylogenetic analysis on an expanded LSU rRNA (D1/D2 domains) gene sequence dataset covering as many as available teleomorphic and filamentous taxa within Tremellomycetes was performed to investigate the relationships between yeasts and filamentous taxa and to examine the stability of undersampled clades. Based on the results inferred from molecular data and morphological and physiochemical features, we propose an updated classification for the Tremellomycetes. We accept five orders, 17 families and 54 genera, including seven new families and 18 new genera. In addition, seven families and 17 genera are emended and one new species name and 185 new combinations are proposed. We propose to use the term pro tempore or pro tem. in abbreviation to indicate the species names that are temporarily maintained.

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Section: Taxonomymentioning

confidence: 99%

Section: Taxonomymentioning

confidence: 99%

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Towards an integrated phylogenetic classification of theTremellomycetes

Liu¹,

Wang²,

Göker³

et al. 2015

Studies in Mycology

400

356

View full text Add to dashboard Cite

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“…Consequently, monitoring the mycobiota of these rare animals and their habitats, particularly Cryptococcus species and related basidiomycetous yeasts, is of considerable importance to both humans and animals. Indeed, during the 8 years up to and including 2012, over 500 fungal strains were detected in nasal swabs of Queensland koalas and their habitats in Japanese zoos [ 2 , 15 , 20 , 21 ]. Of the isolated basidiomycetous yeasts, C. neoformans was identified as the predominant species in nasal smears and Rhodotorula minuta was detected most frequently in the breeding environments [ 21 ].…”

mentioning

confidence: 99%

<i>Begerowomyces aurantius</i> sp. nov., a novel yeast isolated from koalas’ habitat in a Japanese zoological park

Guo

Alshahni

Satoh

et al. 2023

The Journal of Veterinary Medical Science

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Koalas are iconic mammals indigenous to Australia. These rare animals and their habitats are occasionally associated with pathogenic fungi, including species of Cryptococcus, and consequently, monitoring the mycobiota of areas inhabited by koalas is of considerable importance. In this report, we describe a novel basidiomycetous yeast isolated from a site in Kanazawa Zoo, Japan, associated with captive koalas. Swab samples were collected from koala breeding environments, from which we isolated a novel unencapsulated yeast characterized by ovoid to ellipsoidal cells (3.2-4.9 × 3.5-5 μm). These cells were observed to undergo polar budding and grow as parent bud pairs, with an optimal growth temperature of 28°C. Colonies grown on yeast extract peptone dextrose agar at 28°C have a characteristic coral pink color. On the basis of physiological, morphological, and molecular characters, the new species was placed in the genus Begerowomyces, and the name Begerowomyces aurantius JCM33898 T (LSEM1333 T = CBS16241 T ) is proposed.

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“…Inicialmente, essa espécie era considerada uma variedade da espécie C.laurentii e análises das sequências da região ITS determinaram que as espécies fossem separadas(143).Entre os isolados classificados como Cryptococcus spp., 2 tiveram 98% de identidade com a espécie C.yokohamensis. Essa espécie foi descrita pela primeira vez em estudo realizado por Alshahni et al(144). Os pesquisadores isolaram a espécie a partir de troncos de árvores e a partir das narinas de coalas de um zoológico em Yokohama no Japão.…”

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Espécies de Cryptococcus obtidas de isolados clínicos e ambientais da cidade de Campinas, SP

Lima¹

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v vi vii DEDICATÓRIA Dedico esse trabalho aos meus pais, que com amor, apoio e confiança sempre estiveram presentes em todos os momentos da minha vida. Ao meu marido, que com amor, sempre apoiou essa trajetória. À minha orientadora, que acreditou nas decisões dessa caminhada. viii ix AGRADECIMENTOS À Prof a Dr a Angélica Angélica Zaninelli Schreiber, que além da amizade, dos ensinamentos e ótima orientação, foi a pessoa que acreditou e confiou na minha capacidade e me deu a oportunidade de iniciar a carreira acadêmica. À Prof a Dr a Maria Luiza Moretti pelo apoio, pelos ensinamentos e pela oportunidade de trabalhar em um ótimo grupo de pesquisa. Aos colegas do Laboratório de Investigação em Fungos, em especial à Luzia Lyra, pela amizade, paciência e disposição ao compartilhar seu conhecimento, e ao Edson Luz, por todo apoio, amizade e ensinamentos.

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Cryptococcus yokohamensis sp. nov., a basidiomycetous yeast isolated from trees and a Queensland koala kept in a Japanese zoological park

Cited by 7 publications

References 16 publications

Towards an integrated phylogenetic classification of theTremellomycetes

Towards an integrated phylogenetic classification of theTremellomycetes

<i>Begerowomyces aurantius</i> sp. nov., a novel yeast isolated from koalas’ habitat in a Japanese zoological park

Espécies de Cryptococcus obtidas de isolados clínicos e ambientais da cidade de Campinas, SP

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