1
|
Barros KO, Valério AD, Batista TM, Santos ARO, Souza GFL, Alvarenga FBM, Lopes MR, Morais CG, Alves C, Goes-Neto A, Vital MJS, Uetanabaro APT, Souza DL, Bai FY, Franco GR, Lachance MA, Rosa CA, Johann S. Spencermartinsiella nicolii sp. nov., a potential opportunistic pathogenic yeast species isolated from rotting wood in Brazil. Int J Syst Evol Microbiol 2024; 74. [PMID: 39240062 DOI: 10.1099/ijsem.0.006520] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 09/07/2024] Open
Abstract
Nineteen isolates representing a candidate for a novel yeast species belonging to the genus Spencermartinsiella were recovered from rotting wood samples collected at different sites in Atlantic Rainforest and Amazonian Forest ecosystems in Brazil. Similarity search of the nucleotide sequence of the intergenic spacer (ITS)-5.8S and large subunit D1/D2 regions of the ribosomal gene cluster showed that this novel yeast is closely related to Spencermartinsiella cellulosicola. The isolates differ by four nucleotide substitutions in the D1/D2 domain and six substitutions and 31 indels in the ITS region from the holotype of S. cellulosicola. Phylogenomic analysis based on 1474 single-copy orthologues for a set of Spencermartinsiella species whose whole genome sequences are available confirmed that the novel species is phylogenetically close to S. cellulosicola. The low average nucleotide identity value of 83% observed between S. cellulosicola and the candidate species confirms that they are distinct. The novel species produced asci with hemispherical ascospores. The name Spencermartinsiella nicolii sp. nov. is proposed. The holotype is CBS 14238T. The MycoBank number is MB855027. Interestingly, the D1/D2 sequence of the S. nicolii was identical to that of an uncultured strain of Spencermartinsiella causing systemic infection in a male adult crocodile (Crocodylus niloticus). The characterization of some virulence factors and antifungal susceptibility of S. nicolii isolates suggest that this yeast may be an opportunistic pathogen for animals, including humans; the isolates grow at 37 °C.
Collapse
Affiliation(s)
- Katharina O Barros
- Departamento de Microbiologia, ICB, C.P. 486, Universidade Federal de Minas Gerais, Belo Horizonte, MG, 31270-901, Brazil
| | - Aline D Valério
- Departamento de Microbiologia, ICB, C.P. 486, Universidade Federal de Minas Gerais, Belo Horizonte, MG, 31270-901, Brazil
| | - Thiago M Batista
- Centro de Formação em Ciências Ambientais, Universidade Federal do Sul da Bahia, Porto Seguro, BA, Brazil
| | - Ana Raquel O Santos
- Departamento de Microbiologia, ICB, C.P. 486, Universidade Federal de Minas Gerais, Belo Horizonte, MG, 31270-901, Brazil
| | - Gisele F L Souza
- Departamento de Microbiologia, ICB, C.P. 486, Universidade Federal de Minas Gerais, Belo Horizonte, MG, 31270-901, Brazil
| | - Flávia B M Alvarenga
- Departamento de Microbiologia, ICB, C.P. 486, Universidade Federal de Minas Gerais, Belo Horizonte, MG, 31270-901, Brazil
| | - Mariana R Lopes
- Departamento de Microbiologia, ICB, C.P. 486, Universidade Federal de Minas Gerais, Belo Horizonte, MG, 31270-901, Brazil
| | - Camila G Morais
- Departamento de Microbiologia, ICB, C.P. 486, Universidade Federal de Minas Gerais, Belo Horizonte, MG, 31270-901, Brazil
| | - Cristina Alves
- Departamento de Microbiologia, ICB, C.P. 486, Universidade Federal de Minas Gerais, Belo Horizonte, MG, 31270-901, Brazil
| | - Aristóteles Goes-Neto
- Departamento de Microbiologia, ICB, C.P. 486, Universidade Federal de Minas Gerais, Belo Horizonte, MG, 31270-901, Brazil
| | - Marcos J S Vital
- Departamento de Biologia, Universidade Federal de Roraima, Campus do Paricarana, Boa Vista, Brazil
| | - Ana Paula T Uetanabaro
- Departamento de Ciências Biológicas, Universidade Estadual de Santa Cruz, Agroindústria da UESC, Ilhéus, Brazil
| | - Daniela L Souza
- Departamento de Bioquímica e Imunologia, Universidade Federal de Minas Gerais, Belo Horizonte, MG, Brazil
| | - Feng-Yan Bai
- State Key Laboratory of Mycology, Institute of Microbiology, Chinese Academy of Sciences, Beijing, PR China
| | - Glória R Franco
- Departamento de Bioquímica e Imunologia, Universidade Federal de Minas Gerais, Belo Horizonte, MG, Brazil
| | - Marc-André Lachance
- Department of Biology, University of Western Ontario, London, Ontario, N6A 5B7, Canada
| | - Carlos A Rosa
- Departamento de Microbiologia, ICB, C.P. 486, Universidade Federal de Minas Gerais, Belo Horizonte, MG, 31270-901, Brazil
| | - Susana Johann
- Departamento de Microbiologia, ICB, C.P. 486, Universidade Federal de Minas Gerais, Belo Horizonte, MG, 31270-901, Brazil
| |
Collapse
|
2
|
Takei S, Teramoto K, Fujimura J, Fujiwara M, Suzuki M, Fukui Y, Sekiguchi Y, Kawakami T, Chonan M, Wakita M, Horiuchi Y, Miida T, Naito T, Kirikae T, Tada T, Tabe Y. Isolation and identification of Wickerhamiella tropicalis from blood culture by MALDI-MS. Front Cell Infect Microbiol 2024; 14:1361432. [PMID: 38510957 PMCID: PMC10953818 DOI: 10.3389/fcimb.2024.1361432] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/26/2023] [Accepted: 02/20/2024] [Indexed: 03/22/2024] Open
Abstract
Wickerhamiella is a genus of budding yeast that is mainly isolated from environmental samples, and 40 species have been detected. The yeast isolated from human clinical samples usually only contain three species: W. infanticola, W. pararugosa and W. sorbophila. In this study, we isolated W. tropicalis from a blood sample of a six-year-old female with a history of B-cell precursor lymphoblastic leukemia in Japan in 2022. Though the strain was morphologically identified as Candida species by routine microbiological examinations, it was subsequently identified as W. tropicalis by sequencing the internal transcribed spacer (ITS) of ribosomal DNA (rDNA). The isolate had amino acid substitutions in ERG11 and FKS1 associated with azole and echinocandin resistance, respectively, in Candida species and showed intermediate-resistant to fluconazole and micafungin. The patient was successfully treated with micafungin. Furthermore, matrix-assisted laser desorption/ionization mass spectrometry (MALDI-MS) detected three novel peaks that are specific for W. tropicalis, indicating that MALDI-MS analysis is useful for rapid detection of Wickerhamiella species in routine microbiological examinations.
Collapse
Affiliation(s)
- Satomi Takei
- Department of Clinical Laboratory Medicine, Juntendo University Graduate School of Medicine, Tokyo, Japan
- Department of MALDI-TOF MS Practical Application Research, Juntendo University Graduate School of Medicine, Tokyo, Japan
| | - Kanae Teramoto
- Department of MALDI-TOF MS Practical Application Research, Juntendo University Graduate School of Medicine, Tokyo, Japan
- Analytical & Measurement Instruments Division, Shimadzu Corporation, Kyoto, Japan
| | - Junya Fujimura
- Department of Pediatrics, Juntendo University Graduate School of Medicine, Tokyo, Japan
| | - Megumi Fujiwara
- Department of Pediatrics, Juntendo University Graduate School of Medicine, Tokyo, Japan
| | - Mai Suzuki
- Department of General Medicine, Juntendo University Graduate School of Medicine, Tokyo, Japan
| | - Yukiko Fukui
- Department of General Medicine, Juntendo University Graduate School of Medicine, Tokyo, Japan
| | - Yuji Sekiguchi
- Biomedical Research Institute, National Institute of Advanced Industrial Science and Technology (AIST), Tsukuba, Ibaraki, Japan
| | - Takaaki Kawakami
- Department of Clinical Laboratory, Juntendo University Hospital, Tokyo, Japan
| | - Masayoshi Chonan
- Department of Clinical Laboratory, Juntendo University Hospital, Tokyo, Japan
| | - Mitsuru Wakita
- Department of Clinical Laboratory, Juntendo University Hospital, Tokyo, Japan
| | - Yuki Horiuchi
- Department of Clinical Laboratory Medicine, Juntendo University Graduate School of Medicine, Tokyo, Japan
| | - Takashi Miida
- Department of Clinical Laboratory Medicine, Juntendo University Graduate School of Medicine, Tokyo, Japan
| | - Toshio Naito
- Department of MALDI-TOF MS Practical Application Research, Juntendo University Graduate School of Medicine, Tokyo, Japan
- Department of General Medicine, Juntendo University Graduate School of Medicine, Tokyo, Japan
| | - Teruo Kirikae
- Department of MALDI-TOF MS Practical Application Research, Juntendo University Graduate School of Medicine, Tokyo, Japan
- Department of Microbiome Research, Juntendo University Graduate School of Medicine, Tokyo, Japan
| | - Tatsuya Tada
- Department of Microbiology, Juntendo University Graduate School of Medicine, Tokyo, Japan
| | - Yoko Tabe
- Department of Clinical Laboratory Medicine, Juntendo University Graduate School of Medicine, Tokyo, Japan
- Department of MALDI-TOF MS Practical Application Research, Juntendo University Graduate School of Medicine, Tokyo, Japan
| |
Collapse
|
3
|
Rosa CA, Lachance MA, Limtong S, Santos ARO, Landell MF, Gombert AK, Morais PB, Sampaio JP, Gonçalves C, Gonçalves P, Góes-Neto A, Santa-Brígida R, Martins MB, Janzen DH, Hallwachs W. Yeasts from tropical forests: Biodiversity, ecological interactions, and as sources of bioinnovation. Yeast 2023; 40:511-539. [PMID: 37921426 DOI: 10.1002/yea.3903] [Citation(s) in RCA: 4] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/25/2023] [Revised: 10/05/2023] [Accepted: 10/09/2023] [Indexed: 11/04/2023] Open
Abstract
Tropical rainforests and related biomes are found in Asia, Australia, Africa, Central and South America, Mexico, and many Pacific Islands. These biomes encompass less than 20% of Earth's terrestrial area, may contain about 50% of the planet's biodiversity, and are endangered regions vulnerable to deforestation. Tropical rainforests have a great diversity of substrates that can be colonized by yeasts. These unicellular fungi contribute to the recycling of organic matter, may serve as a food source for other organisms, or have ecological interactions that benefit or harm plants, animals, and other fungi. In this review, we summarize the most important studies of yeast biodiversity carried out in these biomes, as well as new data, and discuss the ecology of yeast genera frequently isolated from tropical forests and the potential of these microorganisms as a source of bioinnovation. We show that tropical forest biomes represent a tremendous source of new yeast species. Although many studies, most using culture-dependent methods, have already been carried out in Central America, South America, and Asia, the tropical forest biomes of Africa and Australasia remain an underexplored source of novel yeasts. We hope that this review will encourage new researchers to study yeasts in unexplored tropical forest habitats.
Collapse
Affiliation(s)
- Carlos A Rosa
- Departamento de Microbiologia, ICB, C.P. 486, Universidade Federal de Minas Gerais, Belo Horizonte, Minas Gerais, Brazil
| | - Marc-André Lachance
- Department of Biology, University of Western Ontario, London, Ontario, Canada
| | - Savitree Limtong
- Department of Microbiology, Faculty of Science, Kasetsart University, Bangkok, Thailand
- Biodiversity Center Kasetsart University, Kasetsart University, Bangkok, Thailand
- Academy of Science, Royal Society of Thailand, Bangkok, Thailand
| | - Ana R O Santos
- Departamento de Microbiologia, ICB, C.P. 486, Universidade Federal de Minas Gerais, Belo Horizonte, Minas Gerais, Brazil
| | - Melissa F Landell
- Setor de Genética, Instituto de Ciências Biológicas e da Saúde, Universidade Federal de Alagoas, Maceió, Alagoas, Brazil
| | - Andreas K Gombert
- Department of Engineering and Food Technology, School of Food Engineering, University of Campinas, Campinas, São Paulo, Brazil
| | - Paula B Morais
- Laboratório de Microbiologia Ambiental e Biotecnologia, Campus de Palmas, Universidade Federal do Tocantins, Palmas, Tocantins, Brazil
| | - José P Sampaio
- UCIBIO-i4HB, Departamento de Ciências da Vida, Faculdade de Ciências e Tecnologia, Universidade Nova de Lisboa, Caparica, Portugal
| | - Carla Gonçalves
- UCIBIO-i4HB, Departamento de Ciências da Vida, Faculdade de Ciências e Tecnologia, Universidade Nova de Lisboa, Caparica, Portugal
| | - Paula Gonçalves
- UCIBIO-i4HB, Departamento de Ciências da Vida, Faculdade de Ciências e Tecnologia, Universidade Nova de Lisboa, Caparica, Portugal
| | - Aristóteles Góes-Neto
- Departamento de Microbiologia, ICB, C.P. 486, Universidade Federal de Minas Gerais, Belo Horizonte, Minas Gerais, Brazil
| | | | | | - Daniel H Janzen
- Department of Biology, University of Pennsylvania, Philadelphia, Pennsylvania, USA
| | - Winnie Hallwachs
- Department of Biology, University of Pennsylvania, Philadelphia, Pennsylvania, USA
| |
Collapse
|
4
|
Kumar S, Verma NK, Basotra SD, Sharma D, Prasad GS, Bhattacharyya MS. Harnessing dual applications of a novel ascomycetes yeast, Starmerella cerana sp. nov., as a biocatalyst for stereoselective ketone reduction and biosurfactant production. Front Bioeng Biotechnol 2023; 11:1264826. [PMID: 37941721 PMCID: PMC10628682 DOI: 10.3389/fbioe.2023.1264826] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/21/2023] [Accepted: 09/27/2023] [Indexed: 11/10/2023] Open
Abstract
Introduction: New bioresources for catalytic application and fine chemical synthesis are the need of the hour. In an effort to find out new biocatalyst for oxidation-reduction reaction, leading to the synthesis of chiral intermediates, novel yeast were isolated from unique niche and employed for the synthesis of value added compounds. Methods: To determine the genetic relatedness of the isolated strain, HSB-15T, sequence analysis of the internal transcribed spacer (ITS) and D1/D2 domains of the 26S rRNA gene sequence was carried out. The distinctive features of the strain HSB-15T were also identified by phenotypic characterization. The isolated strain HSB-15T was employed for the reduction of selected naphthyl ketones to their corresponding alcohols and a biosurfactant was isolated from its culture broth. Results: The analysis of the ITS and D1/D2 domains of the 26S rRNA gene revealed that strain HSB-15T is closely related to the type strain of Starmerella vitae (CBS 15147T) with 96.3% and 97.7% sequence similarity, respectively. However, concatenated sequences of the ITS gene and D1/D2 domain showed 94.6% sequence similarity. Phenotypic characterization indicated significant differences between strain HSB-15T and its closely related species and consequently, it was identified as a novel species, leading to the proposal of the name Starmerella cerana sp. nov. The strain was able to reduce selected naphthyl ketones to their corresponding alcohols with remarkable efficiency, within a 12-hours. The strain HSB-15T also produced a surfactant in its culture broth, identified as sophorolipid upon analysis. Discussion: The study explored the potential of the novel strain, HSB-15T, as a whole-cell biocatalyst for the reduction of naphthyl ketones to their corresponding alcohols and also reports its capability to produce sophorolipid, a biosurfactant, in its culture broth. This dual functionality of HSB-15T both as biocatalyst and biosurfactant producer enhances its applicability in biotechnology and environmental science.
Collapse
Affiliation(s)
- Sachin Kumar
- Microbial Type Culture Collection (MTCC), CSIR-Institute of Microbial Technology (IMTECH), Chandigarh, India
| | - Nitish Kumar Verma
- Biochemical Engineering Research and Process Development Centre (BERPDC), CSIR-Institute of Microbial Technology (IMTECH), Chandigarh, India
| | - Sandal Deep Basotra
- Biochemical Engineering Research and Process Development Centre (BERPDC), CSIR-Institute of Microbial Technology (IMTECH), Chandigarh, India
| | - Divya Sharma
- Biochemical Engineering Research and Process Development Centre (BERPDC), CSIR-Institute of Microbial Technology (IMTECH), Chandigarh, India
| | - G. S. Prasad
- Microbial Type Culture Collection (MTCC), CSIR-Institute of Microbial Technology (IMTECH), Chandigarh, India
| | - Mani Shankar Bhattacharyya
- Biochemical Engineering Research and Process Development Centre (BERPDC), CSIR-Institute of Microbial Technology (IMTECH), Chandigarh, India
| |
Collapse
|
5
|
Dlauchy D, Lee CF, Yurkov AM, Péter G. Diddensiella parasantjacobensis f.a., sp. nov., a yeast species from forest habitats. Int J Syst Evol Microbiol 2023; 73. [PMID: 36989131 DOI: 10.1099/ijsem.0.005763] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 03/30/2023] Open
Abstract
Six conspecific yeast strains, representing an undescribed species, were isolated from rotten wood collected in different locations in Hungary and Germany and an additional one from fungal fruiting body in Taiwan. The seven strains share identical nucleotide sequences in the D1/D2 domain of the nuclear large subunit (LSU) rRNA gene. The Hungarian and Taiwanese isolates share identical internal transcribed spacer (ITS) sequences as well, while the two German isolates differ from them merely by three substitutions and four indels in this region. The investigated strains are very closely related to Diddensiella santjacobensis. Along their LSU D1/D2 domain they differ only by one substitution from the type strain of D. santjacobensis. However, in the ITS region of Hungarian and Taiwanese strains we detected 3.5 % divergence (nine substitutions and nine indels) between the undescribed species and D. santjacobensis, while the German strains differed by 13 substitutions and nine indels from D. santjacobensis. This ITS sequence divergence has raised the possibility that the strains investigated in this study may represent a different species from D. santjacobensis. This hypothesis was supported by comparisons of partial translation elongation factor 1-α (EF-1α) and cytochrome oxidase II (COX II) gene sequences. While no difference and 1-2 substitutions among the partial EF-1α and COX II gene sequences of the strains of the undescribed species, respectively, were detected; the undescribed species differ by about 4 % (36 substitutions) and 10 % (50-51 substitutions) from D. santjacobensis in these regions. Parsimony network analysis of the partial COX II gene sequences also separated the investigated strains from the type strain of D. santjacobensis. In this paper we propose Diddensiella parasantjacobensis f.a., sp. nov. (holotype: NCAIM Y.02121; isotypes: CBS 17819, DSM 114156) to accommodate the above-noted strains.
Collapse
Affiliation(s)
- Dénes Dlauchy
- National Collection of Agricultural and Industrial Microorganisms, Institute of Food Science and Technology, Hungarian University of Agriculture and Life Sciences, Somlói út 14-16., H-1118 Budapest, Hungary
| | - Ching-Fu Lee
- Institute of Analytical and Environmental Sciences, National Tsing Hua University, 101, Section 2, Kuang-Fu Road, Hsinchu 300044, Taiwan, ROC
| | - Andrey M Yurkov
- Leibniz Institute DSMZ-German Collection of Microorganisms and Cell Cultures, Inhoffenstraße 7B, 38124 Brunswick, Germany
| | - Gábor Péter
- National Collection of Agricultural and Industrial Microorganisms, Institute of Food Science and Technology, Hungarian University of Agriculture and Life Sciences, Somlói út 14-16., H-1118 Budapest, Hungary
| |
Collapse
|
6
|
Alfian AR, Watchaputi K, Sooklim C, Soontorngun N. Production of new antimicrobial palm oil-derived sophorolipids by the yeast Starmerella riodocensis sp. nov. against Candida albicans hyphal and biofilm formation. Microb Cell Fact 2022; 21:163. [PMID: 35974372 PMCID: PMC9382743 DOI: 10.1186/s12934-022-01852-y] [Citation(s) in RCA: 14] [Impact Index Per Article: 4.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/31/2022] [Accepted: 06/07/2022] [Indexed: 01/21/2023] Open
Abstract
BACKGROUND Microbial derived-surfactants display low eco-toxicity, diverse functionality, high biodegradability, high specificity, and stability under extreme conditions. Sophorolipids are emerging as key biosurfactants of yeast origins, used in various industrial sectors to lower surface tension. Recently, sophorolipid complexes have been applied in biomedicals and agriculture to eradicate infectious problems related to human and plant fungal pathogens. This study aimed to characterize the functional properties and antifungal activities of sophorolipids produced by a newly characterized Starmerella riodocensis GT-SL1R sp. nov. strain. RESULTS Starmerella riodocensis GT-SL1R sp. nov. strain was belonged to Starmerella clade with 93.12% sequence similarity using the ITS technique for strain identification. Sophorolipids production was examined, using co-carbon substrates glucose and palm oil, with a yield on the substrate between 30 and 46%. Using shake-flasks, the S. riodocensis GT-SL1R strain produced biosurfactants with an emulsification activity of 54.59% against kerosene compared to the S. bombicola BCC5426 strain with an activity of 60.22%. Maximum productivities of GT-SL1R and the major sophorolipid-producer S. bombicola were similar at 0.8 gl-1 h-1. S. riodocensis GT-SL1R produced mixed forms of lactonic and acidic sophorolipids, shown by TCL, FTIR, and HPLC. Importantly, the complex sophorolipid mixture displayed antifungal activity against an opportunistic yeast pathogen Candida albicans by effectively reducing hyphal and biofilm formation. CONCLUSIONS Sophorolipids derived from S. riodocensis demonstrate potential industrial and biomedical applications as green surfactant and antifungal agent. Since numerous renewable bioresources and industrial wastes could be used by microbial cell factories in the biosynthesis of biosurfactants to reduce the production cost, sophorolipids hold a promising alternative to current antimicrobials in treatments against infectious diseases in humans, animals, and plants.
Collapse
Affiliation(s)
- Achmad Rifky Alfian
- Gene Technology Laboratory, Biochemical Technology Division, School of Bioresources and Technology, King Mongkut's University of Technology Thonburi, 49, Tian Talay Road, Tha Kham, Bang Khuntian, Bangkok, 10150, Thailand
| | - Kwanrutai Watchaputi
- Gene Technology Laboratory, Biochemical Technology Division, School of Bioresources and Technology, King Mongkut's University of Technology Thonburi, 49, Tian Talay Road, Tha Kham, Bang Khuntian, Bangkok, 10150, Thailand
| | - Chayaphathra Sooklim
- Gene Technology Laboratory, Biochemical Technology Division, School of Bioresources and Technology, King Mongkut's University of Technology Thonburi, 49, Tian Talay Road, Tha Kham, Bang Khuntian, Bangkok, 10150, Thailand
| | - Nitnipa Soontorngun
- Gene Technology Laboratory, Biochemical Technology Division, School of Bioresources and Technology, King Mongkut's University of Technology Thonburi, 49, Tian Talay Road, Tha Kham, Bang Khuntian, Bangkok, 10150, Thailand.
| |
Collapse
|
7
|
Čadež N, Bellora N, Ulloa R, Tome M, Petković H, Groenewald M, Hittinger CT, Libkind D. Hanseniaspora smithiae sp. nov., a Novel Apiculate Yeast Species From Patagonian Forests That Lacks the Typical Genomic Domestication Signatures for Fermentative Environments. Front Microbiol 2021; 12:679894. [PMID: 34367085 PMCID: PMC8334367 DOI: 10.3389/fmicb.2021.679894] [Citation(s) in RCA: 12] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/12/2021] [Accepted: 06/28/2021] [Indexed: 11/13/2022] Open
Abstract
During a survey of Nothofagus trees and their parasitic fungi in Andean Patagonia (Argentina), genetically distinct strains of Hanseniaspora were obtained from the sugar-containing stromata of parasitic Cyttaria spp. Phylogenetic analyses based on the single-gene sequences (encoding rRNA and actin) or on conserved, single-copy, orthologous genes from genome sequence assemblies revealed that these strains represent a new species closely related to Hanseniaspora valbyensis. Additionally, delimitation of this novel species was supported by genetic distance calculations using overall genome relatedness indices (OGRI) between the novel taxon and its closest relatives. To better understand the mode of speciation in Hanseniaspora, we examined genes that were retained or lost in the novel species in comparison to its closest relatives. These analyses show that, during diversification, this novel species and its closest relatives, H. valbyensis and Hanseniaspora jakobsenii, lost mitochondrial and other genes involved in the generation of precursor metabolites and energy, which could explain their slower growth and higher ethanol yields under aerobic conditions. Similarly, Hanseniaspora mollemarum lost the ability to sporulate, along with genes that are involved in meiosis and mating. Based on these findings, a formal description of the novel yeast species Hanseniaspora smithiae sp. nov. is proposed, with CRUB 1602 H as the holotype.
Collapse
Affiliation(s)
- Neža Čadež
- Food Science and Technology Department, Biotechnical Faculty, University of Ljubljana, Ljubljana, Slovenia
| | - Nicolas Bellora
- Centro de Referencia en Levaduras y Tecnología Cervecera (CRELTEC), Instituto Andino Patagónico de Tecnologías Biológicas y Geoambientales (IPATEC), Consejo Nacional de Investigaciones, Científicas y Técnicas (CONICET), Universidad Nacional del Comahue, Bariloche, Argentina
| | - Ricardo Ulloa
- Laboratorio de Bioprocesos, Instituto de Investigación y Desarrollo en Ingeniería de Procesos, Biotecnología y Energías Alternativas, Consejo Nacional de Investigaciones, Científicas y Técnicas (CONICET), Universidad Nacional del Comahue, Neuquén, Argentina
| | - Miha Tome
- Food Science and Technology Department, Biotechnical Faculty, University of Ljubljana, Ljubljana, Slovenia
| | - Hrvoje Petković
- Food Science and Technology Department, Biotechnical Faculty, University of Ljubljana, Ljubljana, Slovenia
| | | | - Chris Todd Hittinger
- Laboratory of Genetics, Center for Genomic Science Innovation, DOE Great Lakes Bioenergy Research Center, Wisconsin Energy Institute, J. F. Crow Institute for the Study of Evolution, University of Wisconsin-Madison, Madison, WI, United States
| | - Diego Libkind
- Centro de Referencia en Levaduras y Tecnología Cervecera (CRELTEC), Instituto Andino Patagónico de Tecnologías Biológicas y Geoambientales (IPATEC), Consejo Nacional de Investigaciones, Científicas y Técnicas (CONICET), Universidad Nacional del Comahue, Bariloche, Argentina
| |
Collapse
|
8
|
Echeverrigaray S, Scariot FJ, Foresti L, Schwarz LV, Rocha RKM, da Silva GP, Moreira JP, Delamare APL. Yeast biodiversity in honey produced by stingless bees raised in the highlands of southern Brazil. Int J Food Microbiol 2021; 347:109200. [PMID: 33894461 DOI: 10.1016/j.ijfoodmicro.2021.109200] [Citation(s) in RCA: 20] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/26/2021] [Revised: 04/05/2021] [Accepted: 04/07/2021] [Indexed: 11/26/2022]
Abstract
The physicochemical characteristics and yeasts diversity in honey samples from 17 species of stingless bees of the genera Nannotrigona, Melipona, Plebeia, Scraptotrigona, and Tetragonisca cultivated in Southern Brazil were determined. The sugar content, moisture, water activity, pH, reducing sugars/total sugar ratio, and total yeast population varied significantly among the honey from the different bee species. The highest yeast population was found in the Plebeia's honey samples and correlated with their high water-activity. Sixteen yeast species were identified based on the nuclear large subunit (26S) ribosomal RNA partial sequences. The genera Starmerella and Zygosaccharomyces were found predominant, with a high prevalence of Starmerella sp., S. etchellsii, and S. apicola. Some yeast species were only identified in honey samples from specific bee species indicating a close relationship between the yeasts and the insects. For the first time, Wickerhamomyces sydowiorum in honey is being reported. In general, the yeast species isolated from stingless bee honey samples demonstrated high osmotolerance and low sugar assimilation.
Collapse
Affiliation(s)
- Sergio Echeverrigaray
- Laboratory of Enology and Applied Microbiology, Institute of Biotechnology, University of Caxias do Sul, Brazil
| | - Fernando Joel Scariot
- Laboratory of Enology and Applied Microbiology, Institute of Biotechnology, University of Caxias do Sul, Brazil.
| | - Luciano Foresti
- Laboratory of Enology and Applied Microbiology, Institute of Biotechnology, University of Caxias do Sul, Brazil
| | - Luisa Vivian Schwarz
- Laboratory of Enology and Applied Microbiology, Institute of Biotechnology, University of Caxias do Sul, Brazil
| | - Ronaldo Kauê Mattos Rocha
- Laboratory of Enology and Applied Microbiology, Institute of Biotechnology, University of Caxias do Sul, Brazil
| | - Gabriela Priscila da Silva
- Laboratory of Enology and Applied Microbiology, Institute of Biotechnology, University of Caxias do Sul, Brazil
| | - Jennifer Pereira Moreira
- Laboratory of Enology and Applied Microbiology, Institute of Biotechnology, University of Caxias do Sul, Brazil
| | - Ana Paula Longaray Delamare
- Laboratory of Enology and Applied Microbiology, Institute of Biotechnology, University of Caxias do Sul, Brazil
| |
Collapse
|
9
|
Detry R, Simon-Delso N, Bruneau E, Daniel HM. Specialisation of Yeast Genera in Different Phases of Bee Bread Maturation. Microorganisms 2020; 8:E1789. [PMID: 33202620 PMCID: PMC7696220 DOI: 10.3390/microorganisms8111789] [Citation(s) in RCA: 28] [Impact Index Per Article: 5.6] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/07/2020] [Revised: 11/05/2020] [Accepted: 11/12/2020] [Indexed: 12/14/2022] Open
Abstract
Pollen stored by bees undergoes a fermentation marked by the presence of lactic acid bacteria and yeasts. It results in bee bread. Past studies have singled out Starmerella (Candida) magnoliae as the most common yeast species in honey bee-stored bee bread. Starmerella species are ecological specialists with potential biotechnological value. The rarity of recent studies on yeasts in honey bees prompted us to generate new information on yeast diversity during the conversion of bee-collected pollen to bee bread. Bees and stored pollen from two apiaries in Belgium were sampled, a yeast isolation protocol was developed, yeast isolates were grouped according to their macro- and micromorphology, and representative isolates were identified using DNA sequences. Most of the 252 identified isolates belonged to the genera Starmerella, Metschnikowia, and Zygosaccharomyces. The high abundance of yeasts in fresh bee bread decreased rapidly with the storage duration. Starmerella species dominated fresh bee bread, while mostly Zygosaccharomyces members were isolated from aged bee bread. Starmerella (Candida) apis, a rarely isolated species, was the most frequent and abundant species in fresh bee bread. Yeasts from the bee's honey stomach and from pollen pellets obtained from bees hind legs were dominated by Metschnikowia species. The distinctive communities from pollen pellets over fresh bee bread to aged bee bread indicate a non-random distribution of these yeasts.
Collapse
Affiliation(s)
- Roxane Detry
- Laboratory of Mycology, Earth and Life Institute, Applied Microbiology, Université Catholique de Louvain, 1348 Louvain-la-Neuve, Belgium;
| | - Noa Simon-Delso
- Beekeeping Research and Information Centre (CARI), 1348 Louvain-la-Neuve, Belgium; (N.S.-D.); (E.B.)
| | - Etienne Bruneau
- Beekeeping Research and Information Centre (CARI), 1348 Louvain-la-Neuve, Belgium; (N.S.-D.); (E.B.)
| | - Heide-Marie Daniel
- Laboratory of Mycology, Earth and Life Institute, Applied Microbiology, Université Catholique de Louvain, 1348 Louvain-la-Neuve, Belgium;
- Belgian Coordinated Collection of Microorganisms (BCCM), Mycothèque de l’Université Catholique de Louvain (MUCL), 1348 Louvain-la-Neuve, Belgium
| |
Collapse
|
10
|
Januário da Costa Neto D, Benevides de Morais P. The vectoring of Starmerella species and other yeasts by stingless bees in a Neotropical savanna. FUNGAL ECOL 2020. [DOI: 10.1016/j.funeco.2020.100973] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/06/2023]
|
11
|
Čadež N, Drumonde-Neves J, Sipiczki M, Dlauchy D, Lima T, Pais C, Schuller D, Franco-Duarte R, Lachance MA, Péter G. Starmerella vitis f.a., sp. nov., a yeast species isolated from flowers and grapes. Antonie Van Leeuwenhoek 2020; 113:1289-1298. [DOI: 10.1007/s10482-020-01438-x] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/12/2020] [Accepted: 06/11/2020] [Indexed: 10/24/2022]
|
12
|
Santos ARDO, Lee DK, Ferreira AG, do Carmo MC, Rondelli VM, Barros KO, Hsiang T, Rosa CA, Lachance MA. The yeast community of Conotelus sp. (Coleoptera: Nitidulidae) in Brazilian passionfruit flowers (Passiflora edulis) and description of Metschnikowia amazonensis sp. nov., a large-spored clade yeast. Yeast 2020; 37:253-260. [PMID: 32017239 DOI: 10.1002/yea.3453] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/30/2019] [Revised: 11/12/2019] [Accepted: 11/15/2019] [Indexed: 11/11/2022] Open
Abstract
Species of the nitidulid beetle Conotelus found in flowers of Convolvulaceae and other plants across the New World and in Hawaii consistently harbour a yeast community dominated by one or more large-spored Metschnikowia species. We investigated the yeasts found in beetles and flowers of cultivated passionfruit in Rondônia state, in the Amazon biome of Brazil, where a Conotelus species damages the flowers and hinders fruit production. A sample of 46 beetles and 49 flowers yielded 86 and 83 yeast isolates, respectively. Whereas the flower community was dominated by Kodamaea ohmeri and Kurtzmaniella quercitrusa, the major yeasts recovered from beetles were Wickerhamiella occidentalis, which is commonly isolated from this community, and a novel species of large-spored Metschnikowia in the arizonensis subclade, which we describe here as Metschnikowia amazonensis sp. nov. Phylogenetic analyses based on barcode sequences (ITS-D1/D2) and a multigene alignment of 11,917 positions (genes ura2, msh6, and pmt2) agreed to place the new species as a sister to Metschnikowia arizonensis, a rare species known only from one locality in Arizona. The two form sterile asci when mated, which is typical of related members of the clade. The α pheromone of the new species is unique but typical of the subclade. The type of M. amazonensis sp. nov. is UFMG-CM-Y6309T (ex-type CBS 16156T , mating type a), and the designated allotype (mating type α) is UFMG-CM-Y6307A (CBS 16155A ). MycoBank MB 833560.
Collapse
Affiliation(s)
| | - Dong Kyung Lee
- Department of Biology, University of Western Ontario, London, Ontario, Canada
| | | | - Marina Conceição do Carmo
- Departamento de Agronomia e Entomologia, Universidade Federal Rural de Pernambuco, Recife, Pernambuco, Brazil
| | - Vando Miossi Rondelli
- Departamento de Agronomia, Universidade Federal de Rondônia, Rolim de Moura, Rondônia, Brazil
| | - Katharina O Barros
- Departamento de Microbiologia, ICB, C.P. 486, Universidade Federal de Minas Gerais, Belo Horizonte, MG, Brazil
| | - Tom Hsiang
- School of Environmental Sciences, University of Guelph, Guelph, Ontario, Canada
| | - Carlos A Rosa
- Departamento de Microbiologia, ICB, C.P. 486, Universidade Federal de Minas Gerais, Belo Horizonte, MG, Brazil
| | - Marc-André Lachance
- Department of Biology, University of Western Ontario, London, Ontario, Canada
| |
Collapse
|
13
|
Yurkov AM, Sannino C, Turchetti B. Mrakia fibulata sp. nov., a psychrotolerant yeast from temperate and cold habitats. Antonie van Leeuwenhoek 2019; 113:499-510. [PMID: 31754948 DOI: 10.1007/s10482-019-01359-4] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/09/2019] [Accepted: 11/08/2019] [Indexed: 01/21/2023]
Abstract
Tree fluxes are sugar-rich, sometimes ephemeral, substrates occurring on sites where tree sap (xylem or phloem) is leaking through damages of tree bark. Tree sap infested with microorganisms has been the source of isolation of many species, including the biotechnologically relevant carotenoid yeast Phaffia rhodozyma. Tree fluxes recently sampled in Germany yielded 19 species, including several psychrophilic yeasts of the genus Mrakia. Four strains from tree fluxes represented a potential novel Mrakia species previously known from two isolates from superficial glacial melting water of Calderone Glacier (Italy). The Italian isolates, originally identified as Mrakia aquatica, and two strains from Germany did not show any sexual structures. But another culture collected in Germany produced clamped hyphae with teliospores. A detailed examination of the five isolates (three from Germany and two from Italy) proved them to be a novel yeast species, which is described in this manuscript as Mrakia fibulata sp. nov. (MB 830398), holotype DSM 103931 and isotype DBVPG 8059. In contrast to other sexually reproducing Mrakia species, M. fibulata produces true hyphae with clamp connections. Also, this is the first psychrotolerant Mrakia species which grows above 20 °C. Spring tree fluxes are widespread and can be recognized and sampled by amateurs in a Citizen Science project. This substrate is a prominent source of yeasts, and may harbor unknown species, as demonstrated in the present work. The description of Mrakia fibulata is dedicated to our volunteer helpers and amateurs, like Anna Yurkova (9-years-old daughter of Andrey Yurkov), who collected the sample which yielded the type strain of this species.
Collapse
Affiliation(s)
- A M Yurkov
- Leibniz Institute DSMZ - German Collection of Microorganisms and Cell Cultures, Inhoffenstrasse 7B, 38124, Brunswick, Germany.
| | - C Sannino
- Department of Agricultural, Food and Environmental Sciences & Industrial Yeasts Collection DBVPG, University of Perugia, Perugia, Italy
| | - B Turchetti
- Department of Agricultural, Food and Environmental Sciences & Industrial Yeasts Collection DBVPG, University of Perugia, Perugia, Italy
| |
Collapse
|
14
|
Blastobotrys bombycis sp. nov., a d-xylose-fermenting yeast isolated from the gut of the silkworm larva Bombyx mori. Int J Syst Evol Microbiol 2018; 68:2638-2643. [DOI: 10.1099/ijsem.0.002890] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/18/2022] Open
|
15
|
Amoikon TLS, Grondin C, Djéni TN, Jacques N, Casaregola S. Starmerella reginensis f.a., sp. nov. and Starmerella kourouensis f.a., sp. nov., isolated from flowers in French Guiana. Int J Syst Evol Microbiol 2018; 68:2299-2305. [DOI: 10.1099/ijsem.0.002829] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/18/2022] Open
Affiliation(s)
- Tiemele Laurent Simon Amoikon
- Laboratoire de Biotechnologie et Microbiologie des Aliments, Unité de Formation et de Recherche en Sciences et Technologie des Aliments (UFR-STA), Université Nangui-Abrogoua, 02 BP 801, Abidjan, 02, Côte d'Ivoire
- Micalis Institute, INRA, AgroParisTech, CIRM-Levures, Université Paris-Saclay, 78350 Jouy-en-Josas, France
| | - Cécile Grondin
- Micalis Institute, INRA, AgroParisTech, CIRM-Levures, Université Paris-Saclay, 78350 Jouy-en-Josas, France
| | - Théodore N'Dédé Djéni
- Laboratoire de Biotechnologie et Microbiologie des Aliments, Unité de Formation et de Recherche en Sciences et Technologie des Aliments (UFR-STA), Université Nangui-Abrogoua, 02 BP 801, Abidjan, 02, Côte d'Ivoire
| | - Noémie Jacques
- Micalis Institute, INRA, AgroParisTech, CIRM-Levures, Université Paris-Saclay, 78350 Jouy-en-Josas, France
| | - Serge Casaregola
- Micalis Institute, INRA, AgroParisTech, CIRM-Levures, Université Paris-Saclay, 78350 Jouy-en-Josas, France
| |
Collapse
|
16
|
de Vega C, Albaladejo RG, Guzmán B, Steenhuisen SL, Johnson SD, Herrera CM, Lachance MA. Flowers as a reservoir of yeast diversity: description of Wickerhamiella nectarea f.a. sp. nov., and Wickerhamiella natalensis f.a. sp. nov. from South African flowers and pollinators, and transfer of related Candida species to the genus Wickerhamiella as new combinations. FEMS Yeast Res 2018; 17:3966713. [PMID: 28810705 DOI: 10.1093/femsyr/fox054] [Citation(s) in RCA: 27] [Impact Index Per Article: 3.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/30/2017] [Accepted: 07/13/2017] [Indexed: 11/14/2022] Open
Abstract
Flowers offer favourable microenvironments for yeast growth, and are increasingly recognised as a rich source of novel yeast species. Independent surveys of yeasts associated with flowers and pollinators in South Africa led to the discovery of 38 strains of two new species. Physiological profiles and analysis of the internal transcribed spacer and the D1/D2 domains of the large subunit rRNA gene showed that they represent two novel species that belong to the Wickerhamiella clade. We describe the species as Wickerhamiella nectarea f.a. sp. nov. (type strain EBDCdVSA11-1T, CBS 14162T, NRRL Y-63791T) and W. natalensis f.a. sp. nov. (type strain EBDCdVSA7-1T, CBS 14161T, NRRL Y-63790T). We extend the known range of flower-associated Wickerhamiella species to South Africa and discuss the ecology and phylogenetic relationships of the clade in relation to its host species and biogeography. Examination of growth characteristics supports that the Wickerhamiella clade exhibits a high degree of evolutionary lability, and that specialisation to different niches may occur rapidly. We review the current status of floral yeast biodiversity and nectar as a reservoir of species diversity, and the importance of pollinators and biogeography. In addition, 18 species formerly assigned to the genus Candida are reassigned formally to the genus Wickerhamiella.
Collapse
Affiliation(s)
- Clara de Vega
- Estación Biológica de Doñana, Consejo Superior de Investigaciones Científicas (CSIC), Avenida de Américo Vespucio s/n, 41092 Sevilla, Spain
| | - Rafael G Albaladejo
- Departamento de Biología Vegetal y Ecología, Universidad de Sevilla, C/ Profesor García González 2, 41012 Sevilla, Spain
| | - Beatriz Guzmán
- Real Jardín Botánico, CSIC, Plaza de Murillo 2, 28014 Madrid, Spain
| | - Sandy-Lynn Steenhuisen
- Department of Biological Sciences, University of Cape Town, P/Bag, Rondebosch 7701, South Africa
| | - Steven D Johnson
- School of Life Sciences, University of KwaZulu-Natal, P/ Bag X01, Scottsville, Pietermaritzburg 3209, South Africa
| | - Carlos M Herrera
- Estación Biológica de Doñana, Consejo Superior de Investigaciones Científicas (CSIC), Avenida de Américo Vespucio s/n, 41092 Sevilla, Spain
| | - Marc-André Lachance
- Department of Biology, University of Western Ontario, London, ON N6A 5B7, Canada
| |
Collapse
|
17
|
Zhang CY, Liu XJ, Yi ZH, Ren YC, Li Y, Hui FL. Starmerella anomalae f.a., sp. nov., Starmerella asiatica f.a., sp. nov., Starmerella henanensis f.a., sp. nov. and Starmerella scarabaei f.a., sp. nov., four yeast species isolated from scarab beetles. Int J Syst Evol Microbiol 2017; 67:1600-1606. [DOI: 10.1099/ijsem.0.001795] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/18/2022] Open
Affiliation(s)
- Cai-Ying Zhang
- School of Life Science and Technology, Nanyang Normal University, Nanyang 473061, PR China
| | - Xiao-Jing Liu
- School of Life Science and Technology, Nanyang Normal University, Nanyang 473061, PR China
| | - Ze-Hao Yi
- School of Life Science and Technology, Nanyang Normal University, Nanyang 473061, PR China
| | - Yong-Cheng Ren
- School of Life Science and Technology, Nanyang Normal University, Nanyang 473061, PR China
| | - Ying Li
- School of Life Science and Technology, Nanyang Normal University, Nanyang 473061, PR China
| | - Feng-Li Hui
- School of Life Science and Technology, Nanyang Normal University, Nanyang 473061, PR China
| |
Collapse
|
18
|
Yurkov A, Guerreiro MA, Sharma L, Carvalho C, Fonseca Á. Multigene assessment of the species boundaries and sexual status of the basidiomycetous yeasts Cryptococcus flavescens and C. terrestris (Tremellales). PLoS One 2015; 10:e0120400. [PMID: 25811603 PMCID: PMC4374795 DOI: 10.1371/journal.pone.0120400] [Citation(s) in RCA: 26] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/24/2014] [Accepted: 01/21/2015] [Indexed: 02/06/2023] Open
Abstract
Cryptococcus flavescens and C. terrestris are phenotypically indistinguishable sister species that belong to the order Tremellales (Tremellomycetes, Basidiomycota) and which may be mistaken for C. laurentii based on phenotype. Phylogenetic separation between C. flavescens and C. terrestris was based on rDNA sequence analyses, but very little is known on their intraspecific genetic variability or propensity for sexual reproduction. We studied 59 strains from different substrates and geographic locations, and used a multilocus sequencing (MLS) approach complemented with the sequencing of mating type (MAT) genes to assess genetic variation and reexamine the boundaries of the two species, as well as their sexual status. The following five loci were chosen for MLS: the rDNA ITS-LSU region, the rDNA IGS1 spacer, and fragments of the genes encoding the largest subunit of RNA polymerase II (RPB1), the translation elongation factor 1 alpha (TEF1) and the p21-activated protein kinase (STE20). Phylogenetic network analyses confirmed the genetic separation of the two species and revealed two additional cryptic species, for which the names Cryptococcus baii and C. ruineniae are proposed. Further analyses of the data revealed a high degree of genetic heterogeneity within C. flavescens as well as evidence for recombination between lineages detected for this species. Strains of C. terrestris displayed higher levels of similarity in all analysed genes and appear to make up a single recombining group. The two MAT genes (STE3 and SXI1/SXI2) sequenced for C. flavescens strains confirmed the potential for sexual reproduction and suggest the presence of a tetrapolar mating system with a biallelic pheromone/receptor locus and a multiallelic HD locus. In C. terrestris we could only sequence STE3, which revealed a biallelic P/R locus. In spite of the strong evidence for sexual recombination in the two species, attempts at mating compatible strains of both species on culture media were unsuccessful.
Collapse
Affiliation(s)
- Andrey Yurkov
- Leibniz Institute DSMZ-German Collection of Microorganisms and Cell Cultures, Brunswick, Germany
- * E-mail:
| | - Marco A. Guerreiro
- Centro de Recursos Microbiológicos, Departamento de Ciências da Vida, Faculdade de Ciências e Tecnologia, Universidade Nova de Lisboa, Caparica, Portugal
| | - Lav Sharma
- Centro de Recursos Microbiológicos, Departamento de Ciências da Vida, Faculdade de Ciências e Tecnologia, Universidade Nova de Lisboa, Caparica, Portugal
| | - Cláudia Carvalho
- Centro de Recursos Microbiológicos, Departamento de Ciências da Vida, Faculdade de Ciências e Tecnologia, Universidade Nova de Lisboa, Caparica, Portugal
| | - Álvaro Fonseca
- Centro de Recursos Microbiológicos, Departamento de Ciências da Vida, Faculdade de Ciências e Tecnologia, Universidade Nova de Lisboa, Caparica, Portugal
| |
Collapse
|
19
|
Čadež N, Fülöp L, Dlauchy D, Péter G. Zygosaccharomyces favi sp. nov., an obligate osmophilic yeast species from bee bread and honey. Antonie van Leeuwenhoek 2014; 107:645-54. [PMID: 25528339 DOI: 10.1007/s10482-014-0359-1] [Citation(s) in RCA: 30] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/26/2014] [Accepted: 12/15/2014] [Indexed: 11/27/2022]
Abstract
Five yeast strains representing a hitherto undescribed yeast species were isolated from bee bread and honey in Hungary. They are obligate osmophilic, i.e. they are unable to grow in/on high water activity culture media. Following isogamous conjugation, they form 1-4 spheroid or subspheroid ascospores in persistent asci. The analysis of the sequences of their large subunit rRNA gene D1/D2 domain placed the new species in the Zygosaccharomyces clade. In terms of pairwise sequence similarity, Zygosaccharomyces gambellarensis is the most closely related species. Comparisons of D1/D2, internal transcribed spacer and translation elongation factor-1α (EF-1α) gene sequences of the five strains with that of the type strain of Z. gambellarensis revealed that they represent a new yeast species. The name Zygosaccharomyces favi sp. nov. (type strain: NCAIM Y.01994(T) = CBS 13653(T) = NRRL Y-63719(T) = ZIM 2551(T)) is proposed for this new yeast species, which based on phenotype can be distinguished from related Zygosaccharomyces species by its obligate osmophilic nature. Some intragenomic sequence variability, mainly indels, was detected among the ITS copies of the strains of the new species.
Collapse
Affiliation(s)
- Neža Čadež
- Biotechnical Faculty, University of Ljubljana, Jamnikarjeva 101, 1000, Ljubljana, Slovenia
| | | | | | | |
Collapse
|
20
|
Yurkov A, Inácio J, Chernov IY, Fonseca Á. Yeast Biogeography and the Effects of Species Recognition Approaches: The Case Study of Widespread Basidiomycetous Species from Birch Forests in Russia. Curr Microbiol 2014; 70:587-601. [DOI: 10.1007/s00284-014-0755-9] [Citation(s) in RCA: 35] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/19/2014] [Accepted: 12/06/2014] [Indexed: 11/25/2022]
|
21
|
Čadež N, Pagnocca FC, Raspor P, Rosa CA. Hanseniaspora nectarophila sp. nov., a yeast species isolated from ephemeral flowers. Int J Syst Evol Microbiol 2014; 64:2364-2369. [DOI: 10.1099/ijs.0.061499-0] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/18/2022] Open
Abstract
Seven apiculate yeast strains that were isolated from the flowers of Syphocampylus corymbiferus Pohl in Brazil are genetically, morphologically and phenotypically distinct from recognized species of the genera Hanseniaspora and Kloeckera. Genetic discontinuities between the novel strains and their closest relatives were found using a networking approach based on the concatenated sequences of the rRNA gene (internal transcribed spacer and D1/D2 of the LSU), and the protein-coding genes for actin and translation elongation factor-1α. Phylogenetic analysis based on the rRNA and the actin gene placed the novel species represented by the strains in close relationship to Hanseniaspora meyeri and Hanseniaspora clermontiae. PCR fingerprinting with microsatellite primers confirmed the genetic heterogeneity of the novel species. The name Hanseniaspora nectarophila sp. nov. is proposed, with UFMG POG a.1T ( = ZIM 2311T = CBS 13383T) as the type strain; MycoBank no. MB807210. As the current description of the genus does not allow the presence of multilateral budding, an emended diagnosis of the genus Hanseniaspora Zikes is proposed.
Collapse
Affiliation(s)
- Neža Čadež
- Department of Food Science and Technology, Biotechnical Faculty, University of Ljubljana, Jamnikarjeva 101, 1000 Ljubljana, Slovenia
| | - Fernando C. Pagnocca
- Centre for the Study of Social Insects, UNESP – São Paulo State University, Rio Claro, SP, Brazil
| | - Peter Raspor
- Department of Food Science and Technology, Biotechnical Faculty, University of Ljubljana, Jamnikarjeva 101, 1000 Ljubljana, Slovenia
| | - Carlos A. Rosa
- Departamento de Microbiologia, ICB, C.P. 486, Universidade Federal de Minas Gerais, Belo Horizonte, Minas Gerais, 31270-901, Brazil
| |
Collapse
|
22
|
Kachalkin AV. Isolation of a divergent strain of Candida saitoana from the Anyui mummy of a steppe bison (Bison priscus). Microbiology (Reading) 2014. [DOI: 10.1134/s0026261714030096] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022] Open
|
23
|
Nagy E, Dlauchy D, Medeiros AO, Péter G, Rosa CA. Yarrowia porcina sp. nov. and Yarrowia bubula f.a. sp. nov., two yeast species from meat and river sediment. Antonie van Leeuwenhoek 2014; 105:697-707. [PMID: 24500004 DOI: 10.1007/s10482-014-0125-4] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/04/2013] [Accepted: 01/22/2014] [Indexed: 11/26/2022]
Abstract
Eleven yeast strains representing two hitherto undescribed species were isolated from different kinds of meat samples in Hungary and one from the sediment of a tropical freshwater river in Southeastern Brazil. The analysis of the sequences of their large subunit rRNA gene D1/D2 domain and the internal transcribed spacer (ITS) regions placed the two new species in the Yarrowia clade. Some of the seven strains representing the first new species can mate and give rise to asci and form ascospores embedded in capsular material, which qualifies it as the third teleomorph species of the Yarrowia clade. The name Yarrowia porcina sp. nov. (type strain: NCAIM Y.02100(T) = CBS 12935(T) = NRRL Y-63669(T), allotype strain UFMG-RD131(A) = CBS 12932(A)) is proposed for this new yeast species, which, based on physiological characters, is indistinguishable from Yarrowia lipolytica and some other species of the genus. Considerable intraspecific variability was detected among the sequences of the large subunit rRNA gene D1/D2 domains of the seven strains. The variability among the D1/D2 sequences exceeded the divergence observed among the ITS sequences and in some cases more than 1 % substitution among the D1/D2 sequences was detected. The conspecificity of these strains was supported by the low (0-3 substitutions) sequence divergence among their ITS sequences, the result of a parsimony network analysis utilizing the concatenated ITS and D1/D2 sequences and also by the fingerprint patterns generated by microsatellite primed PCR. No ascospore formation was observed in the group of the other five strains representing the second new species. These strains shared identical D1/D2 and ITS sequences. Yarrowia bubula f.a., sp. nov. (type strain: NCAIM Y.01998(T) = CBS 12934(T) = NRRL Y-63668(T)) is proposed to accommodate these strains.
Collapse
MESH Headings
- Brazil
- Cluster Analysis
- DNA, Fungal/chemistry
- DNA, Fungal/genetics
- DNA, Ribosomal/chemistry
- DNA, Ribosomal/genetics
- DNA, Ribosomal Spacer/chemistry
- DNA, Ribosomal Spacer/genetics
- Genes, rRNA
- Geologic Sediments/microbiology
- Hungary
- Meat/microbiology
- Molecular Sequence Data
- Mycological Typing Techniques
- Phylogeny
- RNA, Fungal/genetics
- RNA, Ribosomal/genetics
- Rivers/microbiology
- Sequence Analysis, DNA
- Yarrowia/classification
- Yarrowia/genetics
- Yarrowia/isolation & purification
Collapse
Affiliation(s)
- Edina Nagy
- National Collection of Agricultural and Industrial Microorganisms, Faculty of Food Science, Corvinus University of Budapest, Somlói út 14-16, Budapest, 1118, Hungary
| | | | | | | | | |
Collapse
|
24
|
Daniel HM, Rosa CA, Thiago-Calaça PSS, Antonini Y, Bastos EMAF, Evrard P, Huret S, Fidalgo-Jiménez A, Lachance MA. Starmerella neotropicalis f. a., sp. nov., a yeast species found in bees and pollen. Int J Syst Evol Microbiol 2013; 63:3896-3903. [PMID: 23959828 DOI: 10.1099/ijs.0.055897-0] [Citation(s) in RCA: 29] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/18/2022] Open
Abstract
A novel yeast species was found repeatedly and in high cell densities in underground-nesting stingless bees of the species Melipona quinquefasciata and their provisions in northern Minas Gerais (Brazil). One additional strain was isolated from bee-collected pollen in Cuba. Phylogenetic analyses based on rRNA gene sequences (D1/D2 large subunit gene and internal transcribed spacer) indicated that the novel species belongs to the Starmerella clade and is most closely related to Candida (iter. nom. Starmerella) apicola. Growth reactions on carbon and nitrogen sources were typical of those observed in related species of the Starmerella clade. PCR-fingerprinting with mini- and microsatellite specific primers allowed the distinction of the novel species from Candida apicola, Candida bombi and a yet undescribed species represented by strain CBS 4353. On the basis of phylogenetic relationships, the novel species is assigned to the genus Starmerella despite the failure to observe sexual reproduction after extensive mating tests. We propose the name Starmerella neotropicalis f. a., sp. nov. (Mycobank MB 804285) and designate UFMG PST 09(T) ( = MUCL 53320(T) = CBS 12811(T)) as the type strain.
Collapse
Affiliation(s)
- Heide-Marie Daniel
- Mycothèque de l'Université catholique de Louvain (BCCM/MUCL), Earth and Life Institute, Mycology, Université catholique de Louvain, Croix du Sud 2, bte L7.05.06, 1348 Louvain-la-Neuve, Belgium
| | - Carlos A Rosa
- Departamento de Microbiologia, ICB, Universidade Federal de Minas Gerais, C.P. 486, Belo Horizonte, MG 31270-901, Brazil
| | - Paula S São Thiago-Calaça
- Laboratório de Recursos Vegetais e Opoterápicos, Diretoria de Pesquisa e Desenvolvimento, Fundação Ezequiel Dias, Belo Horizonte, MG, 30510-010, Brazil
| | - Yasmine Antonini
- Departamento de Biodiversidade Evolução e Meio Ambiente, Instituto de Ciências Exatas e Biológicas, Universidade Federal de Ouro Preto, Ouro Preto, MG 35400-000, Brazil
| | - Esther M A F Bastos
- Laboratório de Recursos Vegetais e Opoterápicos, Diretoria de Pesquisa e Desenvolvimento, Fundação Ezequiel Dias, Belo Horizonte, MG, 30510-010, Brazil
| | - Pierre Evrard
- Mycothèque de l'Université catholique de Louvain (BCCM/MUCL), Earth and Life Institute, Mycology, Université catholique de Louvain, Croix du Sud 2, bte L7.05.06, 1348 Louvain-la-Neuve, Belgium
| | - Stéphanie Huret
- Mycothèque de l'Université catholique de Louvain (BCCM/MUCL), Earth and Life Institute, Mycology, Université catholique de Louvain, Croix du Sud 2, bte L7.05.06, 1348 Louvain-la-Neuve, Belgium
| | - Abel Fidalgo-Jiménez
- Instituto de Ecología y Sistematica (IES), Carrerata de Varona, km 3 ½ Capdevila, Boyeros, AP 8029, CP 10800, Ciudad de la Habana, Cuba.,Mycothèque de l'Université catholique de Louvain (BCCM/MUCL), Earth and Life Institute, Mycology, Université catholique de Louvain, Croix du Sud 2, bte L7.05.06, 1348 Louvain-la-Neuve, Belgium
| | - Marc-André Lachance
- Department of Biology, University of Western Ontario, London, Ontario N6A 5B7, Canada
| |
Collapse
|
25
|
Sipiczki M, Pfliegler WP, Holb IJ. Metschnikowia Species Share a Pool of Diverse rRNA Genes Differing in Regions That Determine Hairpin-Loop Structures and Evolve by Reticulation. PLoS One 2013; 8:e67384. [PMID: 23805311 PMCID: PMC3689696 DOI: 10.1371/journal.pone.0067384] [Citation(s) in RCA: 26] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/02/2013] [Accepted: 05/19/2013] [Indexed: 12/20/2022] Open
Abstract
Modern taxonomy of yeasts is mainly based on phylogenetic analysis of conserved DNA and protein sequences. By far the most frequently used sequences are those of the repeats of the chromosomal rDNA array. It is generally accepted that the rDNA repeats of a genome have identical sequences due to the phenomenon of sequence homogenisation and can thus be used for identification and barcoding of species. Here we show that the rDNA arrays of the type strains of Metschnikowia andauensis and M. fructicola are not homogenised. Both have arrays consisting of diverse repeats that differ from each other in the D1/D2 domains by up to 18 and 25 substitutions. The variable sites are concentrated in two regions that correspond to back-folding stretches of hairpin loops in the predicted secondary structure of the RNA molecules. The substitutions do not alter significantly the overall hairpin-loop structure due to wobble base pairing at sites of C-T transitions and compensatory mutations in the complementary strand of the hairpin stem. The phylogenetic and network analyses of the cloned sequences revealed that the repeats had not evolved in a vertical tree-like way but reticulation might have shaped the rDNA arrays of both strains. The neighbour-net analysis of all cloned sequences of the type strains and the database sequences of different strains further showed that these species share a continuous pool of diverse repeats that appear to evolve by reticulate evolution.
Collapse
Affiliation(s)
- Matthias Sipiczki
- Department of Genetics and Applied Microbiology, University of Debrecen, Debrecen, Hungary
| | - Walter P. Pfliegler
- Department of Genetics and Applied Microbiology, University of Debrecen, Debrecen, Hungary
| | - Imre J. Holb
- Plant Protection Institute, Hungarian Academy of Sciences, and University of Debrecen, Debrecen, Hungary
| |
Collapse
|
26
|
Čadež N, Dlauchy D, Raspor P, Péter G. Ogataea kolombanensis sp. nov., Ogataea histrianica sp. nov. and Ogataea deakii sp. nov., three novel yeast species from plant sources. Int J Syst Evol Microbiol 2013; 63:3115-3123. [PMID: 23749284 DOI: 10.1099/ijs.0.052589-0] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/18/2022] Open
Abstract
Nine methanol-assimilating yeast strains isolated from olive oil sediments in Slovenia, extra virgin olive oil from Italy and rotten wood collected in Hungary were found to form three genetically separated groups, distinct from the currently recognized yeast species. Sequence analysis from genes of the small subunit (SSU) rRNA, internal transcribed spacer region/5.8S rRNA, large subunit (LSU) rRNA D1/D2 domains and translational elongation factor-1α (EF-1α) revealed that the three closely related groups represent three different undescribed yeast species. Sequence analysis of the LSU rRNA gene D1/D2 domains placed the novel species in the Ogataea clade. The three novel species are designated as Ogataea kolombanensis sp. nov. (type strain: ZIM 2322(T) = CBS 12778(T) = NRRL Y-63657(T)), Ogataea histrianica sp. nov. (type strain: ZIM 2463(T) = CBS 12779(T) = NRRL Y-63658(T)) and Ogataea deakii sp. nov. (type strain: NCAIM Y.01896(T) = CBS 12735(T) = NRRL Y-63656(T)).
Collapse
Affiliation(s)
- Neža Čadež
- Biotechnical Faculty, University of Ljubljana, Jamnikarjeva 101, 1000 Ljubljana, Slovenia
| | - Dénes Dlauchy
- National Collection of Agricultural and Industrial Microorganisms, Faculty of Food Science, Corvinus University of Budapest, Somlói út 14-16. H-1118 Budapest, Hungary
| | - Peter Raspor
- Biotechnical Faculty, University of Ljubljana, Jamnikarjeva 101, 1000 Ljubljana, Slovenia
| | - Gábor Péter
- National Collection of Agricultural and Industrial Microorganisms, Faculty of Food Science, Corvinus University of Budapest, Somlói út 14-16. H-1118 Budapest, Hungary
| |
Collapse
|
27
|
Dlauchy D, Lee CF, Péter G. Spencermartinsiella ligniputridi sp. nov., a yeast species isolated from rotten wood. Int J Syst Evol Microbiol 2012; 62:2799-2804. [DOI: 10.1099/ijs.0.042317-0] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/18/2022] Open
Abstract
Four strains of a novel heterothallic yeast species were isolated from rotten wood samples collected at different locations in Hungary. Analysis of sequences of the D1/D2 domain of the large subunit rRNA gene placed the novel species in the genus Spencermartinsiella. The novel species can be distinguished from Spencermartinsiella europaea, the single species of the genus, and from Candida cellulosicola, the only recognized anamorphic species of the Spencermartinsiella clade, on the basis of standard phenotypic characteristics. The relatedness among the four strains of the novel species and two closely related strains representing undescribed yeast species is discussed. The name Spencermartinsiella ligniputridi sp. nov. is proposed to accommodate the four novel strains. The type and isotype strains of Spencermartinsiella ligniputridi sp. nov. are NCAIM Y.01992T ( = CBS 12585T = NRRL Y-48818T) and NCAIM Y.01936I ( = CBS 12586I = NRRL Y-48819I), respectively. Two additional strains are NCAIM Y.01991 and NCAIM Y.01993.
Collapse
Affiliation(s)
- Dénes Dlauchy
- National Collection of Agricultural and Industrial Microorganisms, Faculty of Food Sciences, Corvinus University of Budapest, Somlói út 14-16, Budapest H-1118, Hungary
| | - Ching-Fu Lee
- Department of Applied Science, National Hsinchu University of Education, 521 Nanda Road, Hsinchu 30014, Taiwan, ROC
| | - Gábor Péter
- National Collection of Agricultural and Industrial Microorganisms, Faculty of Food Sciences, Corvinus University of Budapest, Somlói út 14-16, Budapest H-1118, Hungary
| |
Collapse
|
28
|
Lachance MA, Rosa CA, Carvajal EJ, Freitas LFD, Bowles JM. Saccharomycopsis fodiens sp. nov., a rare predacious yeast from three distant localities. Int J Syst Evol Microbiol 2012; 62:2793-2798. [DOI: 10.1099/ijs.0.043109-0] [Citation(s) in RCA: 11] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/18/2022] Open
Abstract
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).
Collapse
Affiliation(s)
- Marc-André Lachance
- Department of Biology, University of Western Ontario, London, ON N6A 5B7, Canada
| | - Carlos A. Rosa
- Department of Microbiology, ICB, C.P. 486, Universidade Federal de Minas Gerais, Belo Horizonte, MG 31270-901, Brazil
| | - Enrique Javier Carvajal
- Colección de Levaduras Quito Católica, Centro Neotropical para Investigación de la Biomasa, Pontificia Universidad Católica del Ecuador, Escuela de Ciencias Biológicas, CP 17-01-2184, Quito, Ecuador
| | - Larissa F. D. Freitas
- Department of Microbiology, ICB, C.P. 486, Universidade Federal de Minas Gerais, Belo Horizonte, MG 31270-901, Brazil
| | - Jane M. Bowles
- Department of Biology, University of Western Ontario, London, ON N6A 5B7, Canada
| |
Collapse
|
29
|
de Garcia V, Zalar P, Brizzio S, Gunde-Cimerman N, van Broock M. Cryptococcus species (Tremellales) from glacial biomes in the southern (Patagonia) and northern (Svalbard) hemispheres. FEMS Microbiol Ecol 2012; 82:523-39. [PMID: 22861821 DOI: 10.1111/j.1574-6941.2012.01465.x] [Citation(s) in RCA: 41] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Abstract] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/07/2012] [Revised: 07/22/2012] [Accepted: 07/31/2012] [Indexed: 11/29/2022] Open
Abstract
Cryptococcus species (Basidiomycota) were isolated as the predominant yeast from glacial biomes of both Patagonia (Argentina) and the Svalbard archipelago (Norway). For a selected group of Cryptococcus belonging to Tremellales, assimilative profile, production of extracellular hydrolytic enzymes and ribosomal DNA internal transcribed spacer and large subunit (D1/D2) sequences were analysed. Cryptococcus victoriae, which was originally described from Antarctica, was the most frequently found species at both locations. High variability within the species was observed and described at the genotypic and phenotypic levels, two newly described species were found in both Patagonia and Svalbard: Cryptococcus fonsecae and Cryptococcus psychrotolerans. Two other new species were found only in Patagonia: Cryptococcus frias and Cryptococcus tronadorensis. Three additional new taxa were found, but they are not named as they were only represented by single isolates.
Collapse
Affiliation(s)
- Virginia de Garcia
- Laboratorio de Microbiología Aplicada y Biotecnología, Centro Regional Universitario Bariloche, INIBIOMA-CCT - CONICET, Universidad Nacional del Comahue, Río Negro, Argentina.
| | | | | | | | | |
Collapse
|
30
|
Dayo-Owoyemi I, Rodrigues A, Landell MF, Valente P, Mueller UG, Ramos JP, Pagnocca FC. Intraspecific variation and emendation of Hannaella kunmingensis. Mycol Prog 2012. [DOI: 10.1007/s11557-012-0846-6] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/28/2022]
|
31
|
Urbina H, Blackwell M. Multilocus phylogenetic study of the Scheffersomyces yeast clade and characterization of the N-terminal region of xylose reductase gene. PLoS One 2012; 7:e39128. [PMID: 22720049 PMCID: PMC3375246 DOI: 10.1371/journal.pone.0039128] [Citation(s) in RCA: 42] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/13/2012] [Accepted: 05/18/2012] [Indexed: 01/21/2023] Open
Abstract
Many of the known xylose-fermenting (X-F) yeasts are placed in the Scheffersomyces clade, a group of ascomycete yeasts that have been isolated from plant tissues and in association with lignicolous insects. We formally recognize fourteen species in this clade based on a maximum likelihood (ML) phylogenetic analysis using a multilocus dataset. This clade is divided into three subclades, each of which exhibits the biochemical ability to ferment cellobiose or xylose. New combinations are made for seven species of Candida in the clade, and three X-F taxa associated with rotted hardwood are described: Scheffersomyces illinoinensis (type strain NRRL Y-48827(T) = CBS 12624), Scheffersomyces quercinus (type strain NRRL Y-48825(T) = CBS 12625), and Scheffersomyces virginianus (type strain NRRL Y-48822(T) = CBS 12626). The new X-F species are distinctive based on their position in the multilocus phylogenetic analysis and biochemical and morphological characters. The molecular characterization of xylose reductase (XR) indicates that the regions surrounding the conserved domain contain mutations that may enhance the performance of the enzyme in X-F yeasts. The phylogenetic reconstruction using XYL1 or RPB1 was identical to the multilocus analysis, and these loci have potential for rapid identification of cryptic species in this clade.
Collapse
Affiliation(s)
- Hector Urbina
- Department of Biological Sciences, Louisiana State University, Baton Rouge, Louisiana, United States of America
| | - Meredith Blackwell
- Department of Biological Sciences, Louisiana State University, Baton Rouge, Louisiana, United States of America
| |
Collapse
|
32
|
Kachalkin AV, Yurkov AM. Yeast communities in Sphagnum phyllosphere along the temperature-moisture ecocline in the boreal forest-swamp ecosystem and description of Candida sphagnicola sp. nov. Antonie van Leeuwenhoek 2012; 102:29-43. [PMID: 22331450 DOI: 10.1007/s10482-012-9710-6] [Citation(s) in RCA: 34] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/12/2011] [Accepted: 02/03/2012] [Indexed: 11/30/2022]
Abstract
The effects of the temperature-moisture factors on the phylloplane yeast communities inhabiting Sphagnum mosses were studied along the transition from a boreal forest to a swamp biotope at the Central Forest State Biosphere Reserve (Tver region, Russia). We tested the hypothesis that microclimatic parameters affect yeast community composition and structure even on a rather small spatial scale. Using a conventional plating technique we isolated and identified by molecular methods a total of 15 species of yeasts. Total yeast counts and species richness values did not depend on environmental factors, although yeast community composition and structure did. On average, Sphagnum in the swamp biotope supported a more evenly structured yeast community. Relative abundance of ascomycetous yeasts was significantly higher on swamp moss. Rhodotorula mucilaginosa dominated in the spruce forest and Cryptococcus magnus was more abundant in the swamp. Our study confirmed the low occurrence of tremellaceous yeasts in the Sphagnum phyllosphere. Of the few isolated ascomycetous yeast and yeast-like species, some were differentiated from hitherto known species in physiological tests and phylogenetic analyses. We describe one of them as Candida sphagnicola and designate KBP Y-3887(T) (=CBS 11774(T) = VKPM Y-3566(T) = MUCL 53590(T)) as the type strain. The new species was registered in MycoBank under MB 563443.
Collapse
Affiliation(s)
- Aleksey V Kachalkin
- Faculty of Soil Science, Lomonosov Moscow State University, Leninskie Gory, 119991, Moscow, Russia.
| | | |
Collapse
|
33
|
Saksinchai S, Suzuki M, Lumyong S, Ohkuma M, Chantawannakul P. Two new species of the genus Candida in the Zygoascus clade, Candida lundiana sp. nov. and Candida suthepensis sp. nov., isolated from raw honey in Thailand. Antonie van Leeuwenhoek 2011; 101:633-40. [PMID: 22105532 DOI: 10.1007/s10482-011-9677-8] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/02/2011] [Accepted: 11/10/2011] [Indexed: 11/25/2022]
Abstract
During a survey of yeasts associated with raw honey collected in Thailand, two strains of the Zygoascus clade were isolated from the Asian cavity-nesting honeybee Apis cerana and the stingless bee Homotrigona fimbriata. Phylogeny based on 26S rDNA D1/D2 sequences placed these yeasts as members of a clade including Candida bituminiphila, Candida patagonica and Candida polysorbophila. The strains of the two novel species, CBS 12271(T) and CBS 12270(T), respectively, could be unquestionably distinguished from their relatives by rDNA sequences and other taxonomic characteristics. Therefore, the novel anamorphic species, Candida lundiana sp. nov. (type strain CBS 12271(T) = JCM 16823(T)) and Candida suthepensis sp. nov. (type strain CBS 12270(T) = JCM 16822(T)) are described.
Collapse
|
34
|
A novel ascosporogenous yeast species, Zygosaccharomyces siamensis, and the sugar tolerant yeasts associated with raw honey collected in Thailand. FUNGAL DIVERS 2011. [DOI: 10.1007/s13225-011-0115-z] [Citation(s) in RCA: 33] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
|
35
|
Péter G, Dlauchy D, Tornai-Lehoczki J, Gouliamova D, Kurtzman CP. Ogataea saltuana sp. nov., a novel methanol-assimilating yeast species. Antonie van Leeuwenhoek 2011; 100:375-83. [DOI: 10.1007/s10482-011-9592-z] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/09/2011] [Accepted: 05/17/2011] [Indexed: 10/18/2022]
|
36
|
Abstract
PREMISE OF THE STUDY Fungi are major decomposers in certain ecosystems and essential associates of many organisms. They provide enzymes and drugs and serve as experimental organisms. In 1991, a landmark paper estimated that there are 1.5 million fungi on the Earth. Because only 70000 fungi had been described at that time, the estimate has been the impetus to search for previously unknown fungi. Fungal habitats include soil, water, and organisms that may harbor large numbers of understudied fungi, estimated to outnumber plants by at least 6 to 1. More recent estimates based on high-throughput sequencing methods suggest that as many as 5.1 million fungal species exist. METHODS Technological advances make it possible to apply molecular methods to develop a stable classification and to discover and identify fungal taxa. KEY RESULTS Molecular methods have dramatically increased our knowledge of Fungi in less than 20 years, revealing a monophyletic kingdom and increased diversity among early-diverging lineages. Mycologists are making significant advances in species discovery, but many fungi remain to be discovered. CONCLUSIONS Fungi are essential to the survival of many groups of organisms with which they form associations. They also attract attention as predators of invertebrate animals, pathogens of potatoes and rice and humans and bats, killers of frogs and crayfish, producers of secondary metabolites to lower cholesterol, and subjects of prize-winning research. Molecular tools in use and under development can be used to discover the world's unknown fungi in less than 1000 years predicted at current new species acquisition rates.
Collapse
Affiliation(s)
- Meredith Blackwell
- Department of Biological Sciences, Louisiana State University, Baton Rouge, Louisiana 70803, USA.
| |
Collapse
|
37
|
Dlauchy D, Tornai-Lehoczki J, Sedláček I, Audy M, Péter G. Debaryomyces psychrosporus sp. nov., a yeast species from a Venezuelan cave. Antonie van Leeuwenhoek 2010; 99:619-28. [PMID: 21140214 DOI: 10.1007/s10482-010-9534-1] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/30/2010] [Accepted: 11/21/2010] [Indexed: 10/18/2022]
Abstract
Three yeast strains, which are phenotypically indistinguishable from Debaryomyces hansenii, were recovered from secondary mineral deposits (stalactites and stromatolites) obtained in the Crystal Eyes Cave, Roraima Tepui Mountain, Venezuela. Analyses of the D1/D2 domains of the LSU rRNA gene as well as the concatenated sequences of the nearly entire SSU rRNA gene, the ITS regions and the D1/D2 domains of the LSU rRNA gene confirmed the placement of these strains in the genus Debaryomyces, but relationship with all valid species of D. hansenii complex was distant. Based on the observed considerable sequence divergence the three strains are proposed as a new species, D. psychrosporus sp. nov., with the type strain NCAIM Y.01972(T) (CBS 11845(T), NRRL Y-48723(T)).
Collapse
Affiliation(s)
- Dénes Dlauchy
- National Collection of Agricultural and Industrial Microorganisms, Faculty of Food Sciences, Corvinus University of Budapest, Somlói út 14-16, Budapest 1118, Hungary
| | | | | | | | | |
Collapse
|
38
|
Wickerhamomyces anomalus in the sourdough microbial ecosystem. Antonie van Leeuwenhoek 2010; 99:63-73. [DOI: 10.1007/s10482-010-9517-2] [Citation(s) in RCA: 41] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/30/2010] [Accepted: 09/30/2010] [Indexed: 11/30/2022]
|
39
|
Záveská Drábková L, Vlček C. Molecular phylogeny of the genus Luzula DC. (Juncaceae, Monocotyledones) based on plastome and nuclear ribosomal regions: a case of incongruence, incomplete lineage sorting and hybridisation. Mol Phylogenet Evol 2010; 57:536-51. [PMID: 20696260 DOI: 10.1016/j.ympev.2010.07.022] [Citation(s) in RCA: 21] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/04/2009] [Revised: 05/10/2010] [Accepted: 07/29/2010] [Indexed: 10/19/2022]
Abstract
The genus Luzula consists of 115 species distributed throughout the world. Luzula is monophyletic, but species relationships within the genus are difficult to determine primarily due to the similar morphology even within geographically remote taxa (especially within the section Luzula). The plastome trnL intron, trnL-F intergenic spacer and the nuclear ribosomal ITS1-5.8S-ITS2 regions were analysed using maximum parsimony and maximum likelihood reconstruction in 93 species of Luzula. The incongruent phylogenetic signals obtained from the chloroplast and the nuclear genomes point to incomplete lineage sorting as well as recent hybridisation in this group. Although tree-building analyses revealed several well-supported lineages, the outcomes for many groups were ambiguous. In the total evidence tree, Luzula species were grouped within six main clades (1. subgenus Marlenia, 2. subgenus Pterodes except for L. pilosa, 3. sections Anthelaea and Nodulosae, 4. sections Diprophyllatae and Thyrsanochlamydeae, 5. section Alpinae except for a few species and 6. section Luzula). The subgenus Marlenia occupies the early derived lineage within the genus Luzula. The traditionally accepted subgenera Pterodes and Luzula (and its sections) appear to be non-monophyletic. A statistical parsimony network approach showed that ancient haplotypes and ribotypes co-occur with their descendants in Luzula. Furthermore, many haplotypes are shared among different species. Within the Luzula section Luzula, both recent hybridisation and incomplete lineage sorting of ancestral polymorphisms may represent potential sources of the incongruence between chloroplast and nuclear data.
Collapse
|
40
|
Canelhas MR, Barbosa AC, Medeiros AO, Lee CF, Huang LY, Lachance MA, Rosa CA. Saturnispora serradocipensis sp. nov. and Saturnispora gosingensis sp. nov., two ascomycetous yeasts from ephemeral habitats. Antonie van Leeuwenhoek 2010; 99:241-7. [DOI: 10.1007/s10482-010-9482-9] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/26/2010] [Accepted: 06/25/2010] [Indexed: 11/24/2022]
|
41
|
Current awareness on yeast. Yeast 2010. [DOI: 10.1002/yea.1718] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022] Open
|