Saccharomycopsis fodiens sp. nov., a rare predacious yeast from three distant localities

2012 ◽  
Vol 62 (Pt_11) ◽  
pp. 2793-2798 ◽  
Author(s):  
Marc-André Lachance ◽  
Carlos A. Rosa ◽  
Enrique Javier Carvajal ◽  
Larissa F. D. Freitas ◽  
Jane M. Bowles
Keyword(s):  
Costa Rica ◽  
Filamentous Fungi ◽  
Type Strain ◽  
Yeast Species ◽  
Large Subunit ◽  
Rrna Gene ◽  
Galápagos Islands ◽  
Historical Factors ◽  
Nitidulid Beetles ◽  
Large Subunit Rrna

Three strains representing a novel yeast species were recovered as part of independent collections from flower-associated nitidulid beetles in Australia, Costa Rica and the Galapagos Islands, Ecuador. Analysis of the D1/D2 domains of the large subunit rRNA gene indicated that the species belongs to the genus Saccharomycopsis, although the formation of ascospores was not observed. The yeast is capable of necrotrophic parasitism by means of infection pegs when mixed with other yeasts or filamentous fungi. Of particular interest is the fact that despite the large distances separating the isolation sites of the three strains, other strains of the species have not been recovered in other samples of flower-associated nitidulids even though these habitats have been sampled extensively. It is suggested that the dispersal of the yeast may be linked to human historical factors. The name Saccharomycopsis fodiens sp. nov. is proposed for the yeast. The type strain is UWOPS 95-697.4T ( = CBS 8332T = NRRL Y-48786T).

Kodamaea transpacifica f.a., sp. nov., a yeast species isolated from ephemeral flowers and insects in the Galápagos Islands and Malaysia: further evidence for ancient human transpacific contacts

2013 ◽  
Vol 63 (Pt_11) ◽  
pp. 4324-4329 ◽  
Author(s):  
Larissa F. D. Freitas ◽  
Enrique Javier Carvajal Barriga ◽  
Patricia Portero Barahona ◽  
Marc-André Lachance ◽  
Carlos A. Rosa
Keyword(s):  
Type Strain ◽  
Yeast Species ◽  
Large Subunit ◽  
Rrna Gene ◽  
Galápagos Islands ◽  
Galapagos Archipelago ◽  
Yeast Strains ◽  
Cameron Highlands ◽  
Ancient Times ◽  
Large Subunit Rrna

Twenty-four yeast strains were isolated from ephemeral flowers of Ipomoea spp. and Datura sp. and their associated insects in the Galápagos Archipelago, Ecuador, and from Ipomoea spp. and associated insects in the Cameron Highlands, Malaysia. Sequences of the D1/D2 domains of the large subunit rRNA gene indicated that these strains belong to a novel yeast species of the Kodamaea clade, although the formation of ascospores was not observed. The closest relative is Candida restingae. The human-mediated dispersion of this species by transpacific contacts in ancient times is suggested. The name Kodamaea transpacifica f.a., sp. nov. is proposed to accommodate these isolates. The type strain is CLQCA-24i-070T ( = CBS 12823T = NCYC 3852T); MycoBank number MB 803609.

Candida ficus sp. nov., a novel yeast species from the gut of Apriona germari larvae

2012 ◽  
Vol 62 (Pt_11) ◽  
pp. 2805-2809 ◽  
Author(s):  
Feng-Li Hui ◽  
Qiu-Hong Niu ◽  
Tao Ke ◽  
Zheng Liu
Keyword(s):  
Type Strain ◽  
Yeast Species ◽  
Large Subunit ◽  
Sequence Divergence ◽  
Central China ◽  
Rrna Gene ◽  
The Novel ◽  
Ascomycetous Yeasts ◽  
Large Subunit Rrna ◽  
Wood Boring

A novel yeast species is described based on three strains from the gut of wood-boring larvae collected in a tree trunk of Ficus carica cultivated in parks near Nanyang, central China. Phylogenetic analysis based on sequences of the D1/D2 domains of the large subunit rRNA gene showed that these strains occurred in a separate clade that was genetically distinct from all known ascomycetous yeasts. In terms of pairwise sequence divergence, the novel strains differed by 15.3 % divergence from the type strain of Pichia terricola, and by 15.8 % divergence from the type strains of Pichia exigua and Candida rugopelliculosa in the D1/D2 domains. All three are ascomycetous yeasts in the Pichia clade. Unlike P. terricola, P. exigua and C. rugopelliculosa, the novel isolates did not ferment glucose. The name Candida ficus sp. nov. is proposed to accommodate these highly divergent organisms, with STN-8T ( = CICC 1980T = CBS 12638T) as the type strain.

scholarly journals Candida andamanensis sp. nov., Candida laemsonensis sp. nov. and Candida ranongensis sp. nov., anamorphic yeast species isolated from estuarine waters in a Thai mangrove forest

2011 ◽  
Vol 61 (2) ◽  
pp. 454-461 ◽  
Author(s):  
Somjit Am-In ◽  
Savitree Limtong ◽  
Wichien Yongmanitchai ◽  
Sasitorn Jindamorakot
Keyword(s):  
Phylogenetic Analysis ◽  
Sequence Analysis ◽  
Type Strain ◽  
Mangrove Forest ◽  
Yeast Species ◽  
Novel Species ◽  
Large Subunit ◽  
Rrna Gene ◽  
D2 Domain ◽  
Large Subunit Rrna

Five strains (RV5T, RV140, R31T, RS17 and RS28T) representing three novel anamorphic ascomycetous yeast species were isolated by membrane filtration from estuarine waters collected from a mangrove forest in Laem Son National Park, Ranong Province, Thailand, on different occasions. On the basis of morphological, biochemical, physiological and chemotaxonomic characteristics, sequence analysis of the D1/D2 domain of the large-subunit rRNA gene and the internal transcribed spacer region and phylogenetic analysis, three strains were found to represent two novel Candida species. Two strains (RV5T and RV140) represented a single novel species, for which the name Candida laemsonensis sp. nov. is proposed. The type strain is RV5T (=BCC 35154T =NBRC 105873T =CBS 11419T). Strain R31T was assigned to a novel species that was named Candida andamanensis sp. nov. (type strain R31T =BCC 25965T =NBRC 103862T =CBS 10859T). On the basis of morphological, biochemical, physiological and chemotaxonomic characteristics, sequence analysis of the D1/D2 domain of the large-subunit rRNA gene and phylogenetic analysis, strains RS17 and RS28T represented another novel species of Candida, for which the name Candida ranongensis sp. nov. is proposed. The type strain is RS28T (=BCC 25964T =NBRC 103861T =CBS 10861T).

Kloeckera taiwanica sp. nov., an ascomycetous apiculate yeast species isolated from mushroom fruiting bodies

2012 ◽  
Vol 62 (Pt_6) ◽  
pp. 1434-1437 ◽  
Author(s):  
Chin-Feng Chang ◽  
Li-Yin Huang ◽  
Shan-Fu Chen ◽  
Ching-Fu Lee
Keyword(s):  
Type Strain ◽  
Yeast Species ◽  
Novel Species ◽  
Large Subunit ◽  
Distinct Species ◽  
Rrna Gene ◽  
Sporulation Medium ◽  
Yeast Strains ◽  
D2 Domain ◽  
Large Subunit Rrna

Three apiculate yeast strains, EJ7M09T, GJ5M15 and GJ15M04, isolated from mushrooms in Taiwan were found to represent a novel species of the genus Kloeckera. The phylogenetically closest relative of this novel species is Hanseniaspora occidentalis, but the type strain of H. occidentalis differed by 4.6 % divergence (25 substitutions; 5 gaps) in the sequence of the D1/D2 domain of the large subunit rRNA gene. This difference clearly suggests that the three strains represent a distinct species. As none of the strains that were examined in this study produced ascospores or exhibited conjugation on common sporulation medium either alone or in a pairwise mixture, this species could be considered as an anamorphic member of the genus Hanseniaspora, and a novel species, Kloeckera taiwanica sp. nov., is proposed, with EJ7M09T ( = BCRC 23182T = CBS 11434T) as the type strain.

Kazachstania rupicola sp. nov., a yeast species isolated from water tanks of a bromeliad in Brazil

2013 ◽  
Vol 63 (Pt_3) ◽  
pp. 1165-1168 ◽  
Author(s):  
Silvana Vilas Boas Safar ◽  
Fátima C. O. Gomes ◽  
Andréa R. Marques ◽  
Marc-André Lachance ◽  
Carlos A. Rosa
Keyword(s):  
Type Strain ◽  
Yeast Species ◽  
Novel Species ◽  
Large Subunit ◽  
Campo Rupestre ◽  
Rrna Gene ◽  
The Novel ◽  
Nucleotide Substitutions ◽  
Water Tanks ◽  
Large Subunit Rrna

Two isolates of a novel yeast species were obtained from water tanks (phytotelmata) of the bromeliad Vriesea minarum collected in a tableland (‘campo rupestre’) ecosystem in Brazil. The sequences of the D1/D2 domains of the large-subunit rRNA gene showed that this species is related to Kazachstania exigua and others, from which it differs by 8–10 nucleotide substitutions. The novel species Kazachstania rupicola sp. nov. is proposed to accommodate these isolates. The type strain is UFMG-BRO-80T ( = CBS 12684T  = CBMAI 1466T).

scholarly journals Lindnera rhizosphaerae sp. nov., a yeast species isolated from rhizospheric soil

2011 ◽  
Vol 61 (4) ◽  
pp. 985-988 ◽  
Author(s):  
M. Cecilia Mestre ◽  
Carlos A. Rosa ◽  
Sonia B. Fontenla
Keyword(s):  
Type Strain ◽  
Yeast Species ◽  
Novel Species ◽  
Large Subunit ◽  
Rrna Gene ◽  
Native Forest ◽  
The Novel ◽  
Nothofagus Pumilio ◽  
Rhizospheric Soil ◽  
Large Subunit Rrna

Two strains of a novel yeast species were isolated from ectomycorrhizal Nothofagus pumilio rhizospheric soil in a native forest of Patagonia, Argentina. Analysis of the D1/D2 large-subunit rRNA gene sequences indicated that the novel species belongs to the recently described genus Lindnera. The name Lindnera rhizosphaerae sp. nov. is proposed to accommodate these isolates, and the type strain is CRUB 1796T ( = CBS 11400T  = JCM 16499T).

scholarly journals Starmera pilosocereana sp. nov., a yeast isolated from necrotic tissue of cacti in a sandy coastal dune ecosystem

2015 ◽  
Vol 65 (Pt_12) ◽  
pp. 4474-4478 ◽  
Author(s):  
Larissa F. D. Freitas ◽  
Raquel Barbosa ◽  
José Paulo Sampaio ◽  
Marc-André Lachance ◽  
Carlos A. Rosa
Keyword(s):  
Type Strain ◽  
Sand Dune ◽  
Yeast Species ◽  
Novel Species ◽  
Large Subunit ◽  
New Combination ◽  
Rrna Gene ◽  
The Novel ◽  
Coastal Dune Ecosystem ◽  
Large Subunit Rrna

Two strains of a novel cactophilic yeast species were isolated from the columnar cactus Pilosocereus arrabidae in a sand dune ecosystem in Rio de Janeiro, Brazil. Phylogenetic analysis of sequences of the large subunit rRNA gene D1/D2 domains showed that the strains represent a sister species to Starmera caribaea, from which it differs by 21 nt substitutions and two indels. The novel species is heterothallic and the asci are deliquescent with the formation of two to four hat-shaped ascospores. The name Starmera pilosocereana sp. nov. is proposed for the species. The type strain is UFMG-CM-Y316T ( = CBS 13266T) and the allotype is UFMG-CM-Y346a ( = CBS 13265). The Mycobank number is MB 810683. In addition, Candida stellimalicola belonging to the Starmera clade, is reassigned to Starmera as a new combination.

Kazachstania aerobia sp. nov., an ascomycetous yeast species from aerobically deteriorating corn silage

2004 ◽  
Vol 54 (6) ◽  
pp. 2431-2435 ◽  
Author(s):  
Hui-Zhong Lu ◽  
Yimin Cai ◽  
Zuo-Wei Wu ◽  
Jian-Hua Jia ◽  
Feng-Yan Bai
Keyword(s):  
Type Strain ◽  
Yeast Species ◽  
Novel Species ◽  
Large Subunit ◽  
Corn Silage ◽  
Rrna Gene ◽  
The Novel ◽  
Ascomycetous Yeast ◽  
D2 Domain ◽  
Large Subunit Rrna

In an investigation of the yeast biota involved in silage deterioration, a considerable number of strains belonging to Saccharomyces and related genera were isolated from aerobically deteriorating corn silage in Tochigi, Japan. Analysis of sequences of the internal transcribed spacer and the large-subunit rRNA gene D1/D2 domain and electrophoretic karyotyping indicated that two of the strains, NS 14T and NS 26, represent a novel species with close phylogenetic relationships to Kazachstania servazzii and Kazachstania unispora. It is proposed that the novel species be named Kazachstania aerobia sp. nov., with NS 14T (=AS 2.2384T=CBS 9918T) as the type strain.

scholarly journals Yamadazyma insecticola f.a., sp. nov. and Yamadazyma epiphylla f.a., sp. nov., two novel yeast species

2015 ◽  
Vol 65 (Pt_4) ◽  
pp. 1290-1296 ◽  
Author(s):  
Sasitorn Jindamorakot ◽  
Somjit Am-In ◽  
Rungluk Kaewwichian ◽  
Savitree Limtong
Keyword(s):  
Type Strain ◽  
Yeast Species ◽  
Novel Species ◽  
Sequence Similarity ◽  
Large Subunit ◽  
Rrna Gene ◽  
Nucleotide Substitutions ◽  
Pairwise Sequence Similarity ◽  
Rice Leaves ◽  
Large Subunit Rrna

Two yeast strains representing two novel yeast species were isolated from frass of an unidentified insect (ST-78T) and the external surfaces of rice leaves (YE170T) collected in Thailand. The two strains were genetically, morphologically and phenotypically distinct from recognized species and were found to represent two novel species of the genus Yamadazyma although formation of ascospores was not observed. In terms of pairwise sequence similarity of the D1/D2 region of the large subunit rRNA gene, the closest relative of strain ST-78T was Candida lessepsii CBS 9941T but with 3.8 % nucleotide substitutions, while the closest relative of strain YE170T was strain ST-78T but with 4.3 % nucleotide substitutions. Analysis of the sequences of the internal transcribed spacer 1 and 2 (ITS1–2) regions revealed that strain ST-78 differed from C. lessepsii CBS 9941T by 8.8 % nucleotide substitutions and from strain YE170T by 9.4 % nucleotide substitutions. The result of pairwise sequence similarity of the D1/D2 and ITS1–2 regions together with phylogenetic analysis indicated that strains ST-78T and YE170T represented two novel species within the Yamadazyma clade. The names Yamadazyma insecticola f.a., sp. nov. (type strain ST-78T = BCC 8314T = NBRC 110421T = CBS 13382T; MycoBank no. MB810546) and Yamadazyma epiphylla f.a., sp. nov. (type strain YE170T = BCC 63466T = NBRC 110423T = CBS 13384T; MycoBank no. MB810547) are proposed for the two novel yeast species.

scholarly journals Metschnikowia proteae sp. nov., a nectarivorous insect-associated yeast species from Africa

2012 ◽  
Vol 62 (Pt_10) ◽  
pp. 2538-2545 ◽  
Author(s):  
Clara de Vega ◽  
Beatriz Guzmán ◽  
Marc-André Lachance ◽  
Sandy-Lynn Steenhuisen ◽  
Steven D. Johnson ◽  
...  
Keyword(s):  
Type Strain ◽  
Yeast Species ◽  
Novel Species ◽  
Large Subunit ◽  
Rrna Gene ◽  
Mating Types ◽  
Insect Host ◽  
Undescribed Species ◽  
Species Comparisons ◽  
Large Subunit Rrna

A collection of yeasts isolated from nectar of flowers of Protea caffra (Proteaceae) and associated scarab beetles (Atrichelaphinis tigrina, Cyrtothyrea marginalis, Trichostetha fascicularis and Heterochelus sp.) and drosophilid flies in South Africa, contained 28 isolates that could not be assigned to known species. Comparisons of the D1/D2 domains of the large subunit rRNA gene demonstrated the existence of three separate phylotypes with an affinity to the genus Metschnikowia and more specifically to the beetle-associated large-spored Metschnikowia clade. Twenty-six strains that had similar D1/D2 sequences were mixed in all pairwise combinations. They were found to mate and give rise to large asci typical of those in the clade. The name Metschnikowia proteae sp. nov. (type strain EBDT1Y1T = CBS 12522T = NRRL Y-48784T; allotype strain EBDC2Y2 = CBS 12521 = NRRL Y-48785) is proposed to accommodate this novel species. The ecology of this novel yeast species is discussed in relation to its potential plant and insect host species. The additional two single strains isolated from Heterochelus sp. represent two novel undescribed species (Candida sp. 1 EBDM2Y3 and Candida sp. 2 EBDM8Y1). As these single strains are probably haploid mating types of Metschnikowia species, their description is deferred until the species are sufficiently well sampled to permit meaningful descriptions.

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