scholarly journals Trichosporon xylopini sp. nov., a hemicellulose-degrading yeast isolated from the wood-inhabiting beetle Xylopinus saperdioides

2011 ◽  
Vol 61 (10) ◽  
pp. 2538-2542 ◽  
Author(s):  
Pushpa Gujjari ◽  
Sung-Oui Suh ◽  
Ching-Fu Lee ◽  
Jianlong J. Zhou
Keyword(s):  
Type Strain ◽  
Sole Carbon Source ◽  
Novel Species ◽  
Internal Transcribed Spacers ◽  
Rrna Genes ◽  
Rrna Gene ◽  
The Novel ◽  
Yeast Strains ◽  
Lsu Rrna Gene ◽  
Coleoptera Tenebrionidae

Four arthroconidium-producing yeasts were isolated from the gut of wood-inhabiting tenebrionid and passalid beetles. The rRNA genes of these yeast strains were sequenced, compared and analysed. The sequence results and other taxonomic characterizations placed two of the strains into Trichosporon porosum, and the remaining strains, EH024T and EH026 which were isolated from Xylopinus saperdioides (Coleoptera: Tenebrionidae), into a novel species of the genus Trichosporon in the Porosum clade. Strain EN6S23 was independently isolated from forest soil in Taiwan and was identified as the same novel species based on identical sequences in the internal transcribed spacers (ITS) and the D1/D2 region of the LSU rRNA gene and similar physiological characteristics to those of strains EH024T and EH026. The three strains can assimilate cellulose and xylan as sole carbon source, and are clearly distinguished from their closest taxon, T. porosum, by 14 nt differences in the ITS and D1/D2 region. These strains did not reproduce sexually under the laboratory conditions tested. The novel species is proposed as Trichosporon xylopini sp. nov. (type strain EH024T  = ATCC MYA-4670T  = CBS 11841T).

scholarly journals Dioszegia antarctica sp. nov. and Dioszegia cryoxerica sp. nov., psychrophilic basidiomycetous yeasts from polar desert soils in Antarctica

2010 ◽  
Vol 60 (6) ◽  
pp. 1466-1472 ◽  
Author(s):  
Laurie B. Connell ◽  
Regina Redman ◽  
Russel Rodriguez ◽  
Anne Barrett ◽  
Melissa Iszard ◽  
...  
Keyword(s):  
Type Strain ◽  
Novel Species ◽  
Phylogenetic Analyses ◽  
Rrna Gene ◽  
Fungal Population ◽  
Desert Soils ◽  
Polar Desert ◽  
Yeast Strains ◽  
Victoria Land ◽  
Lsu Rrna Gene

During a survey of the culturable soil fungal population in samples collected in Taylor Valley, South Victoria Land, Antarctica, 13 basidiomycetous yeast strains with orange-coloured colonies were isolated. Phylogenetic analyses of internal transcribed spacer (ITS) and partial LSU rRNA gene sequences showed that the strains belong to the Dioszegia clade of the Tremellales (Tremellomycetes, Agaricomycotina), but did not correspond to any of the hitherto recognized species. Two novel species, Dioszegia antarctica sp. nov. (type strain ANT-03-116T =CBS 10920T =PYCC 5970T) and Dioszegia cryoxerica sp. nov. (type strain ANT-03-071T =CBS 10919T =PYCC 5967T), are described to accommodate ten and three of these strains, respectively. Analysis of ITS sequences demonstrated intrastrain sequence heterogeneity in D. cryoxerica. The latter species is also notable for producing true hyphae with clamp connections and haustoria. However, no sexual structures were observed. The two novel species can be considered obligate psychrophiles, since they failed to grow above 20 °C and grew best between 10 and 15 °C.

Kwoniella shandongensis sp. nov., a basidiomycetous yeast isolated from soil and bark from an apple orchard

2012 ◽  
Vol 62 (Pt_11) ◽  
pp. 2774-2777 ◽  
Author(s):  
Ru Chen ◽  
Yuan-Mao Jiang ◽  
Shao-Chong Wei ◽  
Qi-Ming Wang
Keyword(s):  
Type Strain ◽  
Novel Species ◽  
Apple Orchard ◽  
Basidiomycetous Yeast ◽  
Rrna Gene ◽  
The Novel ◽  
Yeast Strains ◽  
Its Regions ◽  
Pr China ◽  
26S Rrna

Four basidiomycetous yeast strains (Y13-1T, Y2-1, Y6-3 and Y8-2) were isolated from soil and bark collected from an apple orchard in Tai’an, Shandong province, PR China. Phylogenetic analysis based on 26S rRNA gene D1/D2 domains and ITS regions revealed that these novel strains were located in the Kwoniella clade in the class Tremellomycetes and were closely related to Cryptococcus cuniculi and Kwoniella heveanensis, but were clearly distinct from these species. Therefore, it is proposed that the new strains represent a novel species, Kwoniella shandongensis sp. nov., with the type strain Y13-1T( = CGMCC 2.04458T = CBS 12478T). The MycoBank number for the novel species is MB 564868.

scholarly journals Bullera vrieseae sp. nov., a tremellaceous yeast species isolated from bromeliads

2015 ◽  
Vol 65 (Pt_8) ◽  
pp. 2466-2471 ◽  
Author(s):  
Melissa Fontes Landell ◽  
Luciana R. Brandão ◽  
Silvana V. B. Safar ◽  
Fatima C. O. Gomes ◽  
Ciro R. Félix ◽  
...  
Keyword(s):  
Internal Transcribed Spacer ◽  
Type Strain ◽  
Yeast Species ◽  
Novel Species ◽  
Large Subunit ◽  
Its Region ◽  
Rrna Gene ◽  
The Novel ◽  
D2 Domain ◽  
Lsu Rrna Gene

Two independent surveys of yeasts associated with different bromeliads in different Brazilian regions led to the proposal of a novel yeast species, Bullera vrieseae sp. nov., belonging to the Tremellales clade (Agaricomycotina, Basidiomycota). Analysis of the sequences in the internal transcribed spacer (ITS) region and D1/D2 domain of the LSU rRNA gene suggested affinity to a phylogenetic lineage that includes Bullera miyagiana and Bullera sakaeratica. Six isolates of the novel species were obtained from different bromeliads and regions in Brazil. Sequence analysis of the D1/D2 domains of the large subunit of the rRNA gene showed that the novel species differs from B. miyagiana and B. sakaeratica by 85 and 64 nt substitutions, respectively and by more than 75 nt substitutions in the ITS region. Phenotypically, Bullera vrieseae sp. nov. can be distinguished from both species based on the assimilation of meso-erythritol, which was negative for B. vrieseae sp. nov. but positive for the others, assimilation of d-glucosamine, which was positive for B. vrieseae sp. nov. but negative for B. miyagiana and of l-sorbose, which was negative for B. vrieseae sp. nov. but positive for B. sakaeratica. The novel species Bullera vrieseae sp. nov. is proposed to accommodate these isolates. The type strain of Bullera vrieseae sp. nov. is UFMG-CM-Y379T (BRO443T; ex-type CBS 13870T).

scholarly journals Candida baotianmanensis sp. nov. and Candida pseudoviswanathii sp. nov., two ascosporic yeast species isolated from the gut of beetles

2015 ◽  
Vol 65 (Pt_10) ◽  
pp. 3580-3585 ◽  
Author(s):  
Yong-Cheng Ren ◽  
Long-Long Xu ◽  
Lin Zhang ◽  
Feng-Li Hui
Keyword(s):  
Type Strain ◽  
Yeast Species ◽  
Novel Species ◽  
Phenotypic Traits ◽  
Rrna Gene ◽  
Candida Maltosa ◽  
Yeast Strains ◽  
Lsu Rrna Gene ◽  
Candida Viswanathii ◽  
Lsu Rrna

Four yeast strains were isolated from the gut of beetles collected on Baotianman Mountain and People's Park of Nanyang in Henan Province, China. These strains produced unconjugated asci with one or two ellipsoidal to elongate ascospores in a persistent ascus. Phylogenetic analysis of the D1/D2 domains of the LSU rRNA gene sequences indicated that the isolates represent two novel sexual species in the Candida/Lodderomyces clade. Candida baotianmanensis sp. nov. was located in a statistically well-supported branch together with Candida maltosa. Candida pseudoviswanathii sp. nov. formed a subclade with its closest relative Candida viswanathii supported by a strong bootstrap value. The two novel species were distinguished from their most closely related described species, Candida maltosa and Candida viswanathii, in the D1/D2 LSU rRNA gene and internal transcribed spacer (ITS) sequences and in phenotypic traits. The type strain of Candida baotianmanensis sp. nov. is NYNU 14719T ( = CBS 13915T = CICC 33052T), and the type strain of Candida pseudoviswanathii sp. nov. is NYNU 14772T ( = CBS 13916T = CICC 33053T). The MycoBank numbers for Candida baotianmanensis sp. nov. and Candida pseudoviswanathii sp. nov. are MB 812621 and MB 812622.

Kazachstania bromeliacearum sp. nov., a yeast species from water tanks of bromeliads

2012 ◽  
Vol 62 (Pt_4) ◽  
pp. 1002-1006 ◽  
Author(s):  
Fabio V. Araújo ◽  
Carlos A. Rosa ◽  
Larissa F. D. Freitas ◽  
Marc-André Lachance ◽  
Ann Vaughan-Martini ◽  
...  
Keyword(s):  
Type Strain ◽  
Yeast Species ◽  
Novel Species ◽  
Large Subunit ◽  
Mangrove Sediment ◽  
Rrna Gene ◽  
The Novel ◽  
Lsu Rrna Gene ◽  
Water Tanks ◽  
Fermentative Yeast

Cultures of a novel nutritionally specialized, fermentative yeast species were isolated from 34 water tanks of five bromeliad species, two mangrove sediment samples and one swamp water sample in Rio de Janeiro, Brazil. Sequence analysis of the D1/D2 domains of the large subunit of the rRNA gene showed that the novel species belongs to the genus Kazachstania. The novel species differs from Kazachstania martiniae by 11 substitutions and 2 gaps in the sequence of the domains D1/D2 of the LSU rRNA gene. The name Kazachstania bromeliacearum sp. nov. is proposed for the novel species. The type strain is IMUFRJ 51496T ( = CBS 7996T  = DBVPG 6864T  = UFMG BR-174T).

Nakazawaea siamensis f.a., sp. nov., a yeast species isolated from phylloplane

2014 ◽  
Vol 64 (Pt_1) ◽  
pp. 266-270 ◽  
Author(s):  
Rungluk Kaewwichian ◽  
Savitree Limtong
Keyword(s):  
Type Strain ◽  
External Surface ◽  
Yeast Species ◽  
Novel Species ◽  
Its Region ◽  
Rrna Gene ◽  
The Novel ◽  
Nucleotide Substitutions ◽  
Lsu Rrna Gene ◽  
Lsu Rrna

Strain DMKU-RK467T, representing a novel yeast species, was isolated from the external surface of sugar cane leaves collected in Thailand. On the basis of morphological, biochemical, physiological and chemotaxonomic characteristics, and sequence analysis of the D1/D2 region of the LSU rRNA gene and the internal transcribed spacer (ITS) region, strain DMKU-RK467T was assigned to a novel species of the genus Nakazawaea. The novel species was related most closely to the type strain of Candida wickerhamii but they differed by 1.9 % nucleotide substitutions in the D1/D2 region of the LSU rRNA gene and by 5.2 % nucleotide substitutions in the ITS region. The name Nakazawaea siamensis f.a., sp. nov. is proposed (type strain DMKU-RK467T = BCC 50734T = NBRC 108903T = CBS 12569T).

scholarly journals Wickerhamiella kiyanii f.a., sp. nov. and Wickerhamiella fructicola f.a., sp. nov., two yeasts isolated from native plants of Atlantic rainforest in Brazil

2014 ◽  
Vol 64 (Pt_6) ◽  
pp. 2152-2158 ◽  
Author(s):  
Ifeloju Dayo-Owoyemi ◽  
Carlos Augusto Rosa ◽  
André Rodrigues ◽  
Fernando Carlos Pagnocca
Keyword(s):  
Type Strain ◽  
Yeast Species ◽  
Novel Species ◽  
Sequence Divergence ◽  
Atlantic Rainforest ◽  
Rrna Gene ◽  
The Novel ◽  
Taxonomic Descriptions ◽  
Lsu Rrna Gene ◽  
Brazilian Atlantic Rainforest

Two novel species, Wickerhamiella kiyanii f.a., sp. nov. (type strain FB1-1DASPT = CBS 12905T = CBMAI 1613T) and Wickerhamiella fructicola f.a., sp. nov. (type strain H10YT = CBS 12902T = CBMAI 1614T) are proposed in the Wickerhamiella clade (Saccharomycetes, Saccharomycetales) to accommodate three strains isolated from flowers and fruits typical of the Brazilian Atlantic rainforest. The novel status of these yeast species was established by sequence divergence observed in the D1/D2 domains of the LSU rRNA gene from the most closely related, described species as well as by phylogenetic analysis. Wickerhamiella kiyanii sp. nov. differs from its nearest phylogenetic neighbours W. pagnoccae CBS 12178T, Candida jalapaonensis CBS 10935T and Candida drosophilae CBS 8459T by 2.2–4.2 % in the D1/D2 sequences. By contrast, a sequence divergence of 13.2–13.8 % was observed between W. fructicola sp. nov. and its closest, described phylogenetic relative Candida kazoui JCM 12558T and Candida hasegawae JCM 12559T. Taxonomic descriptions of the two novel species are given.

scholarly journals Mycobacterium europaeum sp. nov., a scotochromogenic species related to the Mycobacterium simiae complex

2011 ◽  
Vol 61 (7) ◽  
pp. 1606-1611 ◽  
Author(s):  
Enrico Tortoli ◽  
Erik C. Böttger ◽  
Anna Fabio ◽  
Enevold Falsen ◽  
Zoe Gitti ◽  
...  
Keyword(s):  
16S Rrna ◽  
16S Rrna Gene ◽  
Type Strain ◽  
Novel Species ◽  
Rrna Gene ◽  
The Novel ◽  
Gene Sequences ◽  
16S Rrna Gene Sequences ◽  
Polyphasic Analysis ◽  
Mycobacterium Simiae

Four strains isolated in the last 15 years were revealed to be identical in their 16S rRNA gene sequences to MCRO19, the sequence of which was deposited in GenBank in 1995. In a polyphasic analysis including phenotypic and genotypic features, the five strains (including MCRO19), which had been isolated in four European countries, turned out to represent a unique taxonomic entity. They are scotochromogenic slow growers and are genetically related to the group that included Mycobacterium simiae and 15 other species. The novel species Mycobacterium europaeum sp. nov. is proposed to accommodate these five strains. Strain FI-95228T ( = DSM 45397T  = CCUG 58464T) was chosen as the type strain. In addition, a thorough revision of the phenotypic and genotypic characters of the species related to M. simiae was conducted which leads us to suggest the denomination of the ‘Mycobacterium simiae complex’ for this group.

scholarly journals Candida aechmeae sp. nov. and Candida vrieseae sp. nov., novel yeast species isolated from the phylloplane of bromeliads in Southern Brazil

2010 ◽  
Vol 60 (1) ◽  
pp. 244-248 ◽  
Author(s):  
Melissa Fontes Landell ◽  
Raisa Billodre ◽  
Jesus P. Ramos ◽  
Orílio Leoncini ◽  
Marilene H. Vainstein ◽  
...  
Keyword(s):  
Type Strain ◽  
Yeast Species ◽  
Novel Species ◽  
Sequence Divergence ◽  
Rrna Gene ◽  
The Novel ◽  
D2 Domain ◽  
Its Gene ◽  
Ascomycetous Yeasts ◽  
Positive Results

Two novel yeast species, Candida aechmeae sp. nov. and Candida vrieseae sp. nov., were isolated from bromeliads in Itapuã Park, Rio Grande do Sul, Brazil. These species are genetically isolated from all other currently recognized ascomycetous yeasts based on their sequence divergence in the D1/D2 domain of the LSU rRNA gene. C. aechmeae sp. nov. is phylogenetically close to Candida ubatubensis, a species also isolated from bromeliads in Brazil, but the novel species can be differentiated on the basis of differences in the D1/D2 domain and positive results for the assimilation of l-arabinose, raffinose, inulin and citrate. Candida vrieseae sp. nov. is phylogenetically placed in a clade near Candida membranifaciens that is composed of several species associated with insects, but the novel species can be differentiated from them by the D1/D2 and ITS gene sequences, positive results for the assimilation of nitrite and a negative result for the assimilation of ethylamine. The type strain for Candida aechmeae sp. nov. is BI153T (=CBS 10831T=NRRL Y-48456T) and the type strain for C. vrieseae sp. nov. is BI146T (=CBS 10829T=NRRL Y-48461T).

scholarly journals Ogataea mangiferae sp. nov., a methylotrophic yeast isolated from mango leaves

2015 ◽  
Vol 65 (Pt_6) ◽  
pp. 1855-1859 ◽  
Author(s):  
Ana Raquel O. Santos ◽  
Elisa S. Faria ◽  
Marc-André Lachance ◽  
Carlos A. Rosa
Keyword(s):  
Type Strain ◽  
Yeast Species ◽  
Novel Species ◽  
Mangifera Indica ◽  
Large Subunit ◽  
Its Region ◽  
Methylotrophic Yeast ◽  
Rrna Gene ◽  
The Novel ◽  
Mango Leaves

Five strains of a novel methanol-assimilating yeast species were isolated from mango (Mangifera indica) leaves collected at the campus of the Federal University of Minas Gerais in Brazil. The sequences of the internal transcribed spacer (ITS) region and the D1/D2 domains of the large subunit of the rRNA gene showed that this species belongs to the Ogataea clade and is related to O. allantospora, O. chonburiensis, O. dorogensis, O. kodamae, O. paradorogensis and Candida xyloterini (Ogataea clade). The novel species differs in the D1/D2 domains of the large subunit of the rRNA gene by 12 to 40 substitutions from these Ogataea species. The name Ogataea mangiferae sp. nov. is proposed for this novel species. The type strain of Ogataea mangiferae sp. nov. is UFMG-CM-Y253T ( = CBS 13492T). The Mycobank number is MB 811646.

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