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Khunnamwong P, Nualthaisong P, Sakolrak B, Nutaratat P, Limtong S. Yamadazyma sisaketensis f.a., sp. nov. and Yamadazyma koratensis f.a., sp. nov., two novel ascomycetous yeast species from mushrooms and cocoa leaves in Thailand, and reassignment of Candida andamanensis, Candida jaroonii and Candida songkhlaensis to the genus Yamadazyma. Int J Syst Evol Microbiol 2023; 73. [PMID: 37991225 DOI: 10.1099/ijsem.0.006174] [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: 11/23/2023] Open
Abstract
Six strains representing two novel ascomycetous yeast species were isolated from mushroom fruiting bodies and cocoa leaves collected in Thailand. Analysis of the internal transcribed spacer (ITS) regions and the D1/D2 domains of the large subunit rRNA gene sequences showed that the six strains were divided into two groups. The first group consisted of four strains (DMKU-SSK46, DMKU-SK1, SCCL3-5 and SCCL19-3), that were closely related to the type strains of Candida conglobata, Candida insectorum, Yamadazyma dushanensis, Yamadazyma mexicana and Yamadazyma riverae, but with 12-14 (2.5-2.9 %) and 28-50 (5.4-8.8 %) nucleotide substitutions in the D1/D2 domains and the ITS regions, respectively. However, two strains (DMKU-KMY40 and DMKU-KO18) of the second group differed from a group of described species, Candida diddensiae, Candida dendronema, Candida germanica, Candida kanchanaburiensis, Candida naeodendra, Candida vaughaniae and Yamadazyma siamensis by 8-15 (1.5-2.8 %) and 45-53 (8.2-9.6 %) nucleotide substitutions in the D1/D2 domains and the ITS regions, respectively. Phylogenetic analysis based on the concatenated sequences of the ITS regions and D1/D2 domains showed that these strains represented two species of the Yamadazyma clade that were distinct from the other related species. Based on the phylogenetic analysis and phenotypic characteristics, these six strains were assigned to two novel species of the genus Yamadazyma, although formation of ascospores was not observed. Yamadazyma sisaketensis f.a., sp. nov., is proposed for the first group (four strains). The holotype is TBRC 17139T (ex-type culture: PYCC 9797). The MycoBank number is MB 849637. Yamadazyma koratensis f.a., sp. nov. is proposed for the second group (two strains). The holotype is TBRC 14868T (ex-type culture: PYCC 8907). The MycoBank number is MB 849638. In addition, it is proposed that Candida andamanensis, Candida jaroonii and Candida songkhlaensis are reassigned to the genus Yamadazyma as Yamadazyma andamanensis comb. nov., Y. jaroonii comb. nov. and Y. songkhlaensis comb. nov., respectively.
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Affiliation(s)
- Pannida Khunnamwong
- Department of Microbiology, Faculty of Science, Kasetsart University, Bangkok 10900, Thailand
- Biodiversity Center Kasetsart University (BDCKU), Bangkok 10900, Thailand
| | - Panadda Nualthaisong
- Department of Microbiology, Faculty of Science, Kasetsart University, Bangkok 10900, Thailand
- Biodiversity Center Kasetsart University (BDCKU), Bangkok 10900, Thailand
| | - Baramee Sakolrak
- Department of National Parks, Wildlife and Plant Conservation, Bangkok 10900, Thailand
| | - Pumin Nutaratat
- Department of Biology, Faculty of Science and Digital Innovation, Thaksin University, Pa Phayom, Phatthalung 93210, Thailand
- Microbial Technology for Agriculture, Food and Environment Research Center, Faculty of Science, Thaksin University, Pa Phayom, Phatthalung 93210, Thailand
| | - Savitree Limtong
- Department of Microbiology, Faculty of Science, Kasetsart University, Bangkok 10900, Thailand
- Biodiversity Center Kasetsart University (BDCKU), Bangkok 10900, Thailand
- Academy of Science, Royal Society of Thailand, Bangkok 10300, Thailand
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Gao WL, Li Y, Chai CY, Yan ZL, Hui FL. New species of Yamadazyma from rotting wood in China. MycoKeys 2021; 83:69-84. [PMID: 34539207 PMCID: PMC8413266 DOI: 10.3897/mycokeys.83.71156] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/06/2021] [Accepted: 08/06/2021] [Indexed: 11/16/2022] Open
Abstract
Yamadazyma is one of the largest genera in the family Debaryomycetaceae (Saccharomycetales, Saccharomycetes) with species mainly found in rotting wood, insects and their resulting frass, but also recovered from flowers, leaves, fruits, tree bark, mushrooms, sea water, minerals, and the atmosphere. In the present study, several strains obtained from rotting wood in Henan and Yunnan Provinces of China were isolated. Based on morphology and a molecular phylogeny of the rDNA internal transcribed spacer region (ITS) and the D1/D2 domain of the large subunit (LSU) rDNA, these strains were identified as three new species: Yamadazymaluoyangensis, Y.ovata and Y.paraaseri; and three previously described species, Y.insectorum, Y.akitaensis, and Y.olivae. The three new species are illustrated and their morphology and phylogenetic relationships with other Yamadazyma species are discussed. Our results indicate a high undiscovered diversity of Yamadazyma spp. inhabiting rotting wood in China.
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Affiliation(s)
- Wan-Li Gao
- School of Life Science and Technology, Nanyang Normal University, Nanyang 473061, China Nanyang Normal University Nanyang China
| | - Ying Li
- School of Life Science and Technology, Nanyang Normal University, Nanyang 473061, China Nanyang Normal University Nanyang China
| | - Chun-Yue Chai
- School of Life Science and Technology, Nanyang Normal University, Nanyang 473061, China Nanyang Normal University Nanyang China
| | - Zhen-Li Yan
- State Key Laboratory of Motor Vehicle Biofuel Technology, Henan Tianguan Enterprise Group Co., Ltd., Nanyang 473000, China State Key Laboratory of Motor Vehicle Biofuel Technology, Henan Tianguan Enterprise Group Co., Ltd Nanyang China
| | - Feng-Li Hui
- School of Life Science and Technology, Nanyang Normal University, Nanyang 473061, China Nanyang Normal University Nanyang China
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Maksimova IA, Glushakova AM, Thanh VN, Kachalkin AV. Yamadazyma cocois f.a., sp. nov., an ascomycetous yeast isolated from coconuts. Int J Syst Evol Microbiol 2020; 70:3491-3496. [PMID: 32374249 DOI: 10.1099/ijsem.0.004203] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/18/2022] Open
Abstract
During studies on the endophytic yeast communities associated with fruits from Vietnam, three fermenting yeast strains were isolated from fruits of the coconut palm (Cocos nucifera). Phylogenetic analysis based on the sequences of the ITS regions and D1/D2 domains of the large subunit rRNA gene showed that these strains represented a single species of the Yamadazyma clade that was distinct from the other related species. The new species represented a basal branch of the clade formed by the Yamadazyma species i.e. Y. insecticola and Y. takamatsuzukensis. Based on the phylogenetic analysis and phenotypic characteristics, the studied strains were assigned to a novel species of the genus Yamadazyma, for which the name Yamadazyma cocois f.a., sp. nov. is proposed. The holotype is VCIM 4241, with the ex-type cultures VTCC 920004=VKM Y-3049=KBP Y-6091 code 17-68. The MycoBank number is MB 834435.
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Affiliation(s)
| | - Anna M Glushakova
- Mechnikov Research Institute for Vaccines and Sera, Moscow, 105064, Russia.,Lomonosov Moscow State University, Moscow, 119234, Russia
| | - Vu Nguyen Thanh
- Center for Industrial Microbiology, Food Industries Research Institute, 301-Nguyen Trai, Thanh Xuan, Hanoi, Vietnam
| | - Aleksey V Kachalkin
- All-Russian Collection of Microorganisms, G.K. Skryabin Institute of Biochemistry and Physiology of Microorganisms RAS, Pushchino, 142290, Russia.,Lomonosov Moscow State University, Moscow, 119234, Russia
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Yao H, Sun X, He C, Maitra P, Li XC, Guo LD. Phyllosphere epiphytic and endophytic fungal community and network structures differ in a tropical mangrove ecosystem. MICROBIOME 2019; 7:57. [PMID: 30967154 PMCID: PMC6456958 DOI: 10.1186/s40168-019-0671-0] [Citation(s) in RCA: 100] [Impact Index Per Article: 20.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/23/2018] [Accepted: 03/22/2019] [Indexed: 05/25/2023]
Abstract
BACKGROUND Revealing the relationship between plants and fungi is very important in understanding biodiversity maintenance, community stability, and ecosystem functioning. However, differences in the community and network structures of phyllosphere epiphytic and endophytic fungi are currently poorly documented. In this study, we examined epiphytic and endophytic fungal communities associated with the leaves of six mangrove species using Illumina MiSeq sequencing of internal transcribed spacer 2 (ITS2) sequences. RESULTS A total of 635 operational taxonomic units (OTUs) of endophytic and epiphytic fungi were obtained at a 97% sequence similarity level; they were dominated by Dothideomycetes and Tremellomycetes. Plant identity had a significant effect on the OTU richness of endophytic fungi, but not on epiphytic fungi. The community composition of epiphytic and endophytic fungi was significantly different, and plant identity had a greater effect on endophytic fungi than on epiphytic fungi. Network analysis showed that both epiphytic and endophytic network structures were characterized by significantly highly specialized and modular but lowly connected and anti-nested properties. Furthermore, the endophytic network had higher levels of specialization and modularity but lower connectance and stronger anti-nestedness than the epiphytic network. CONCLUSIONS This study reveals that the phyllosphere epiphytic and endophytic fungal communities differ, and plant identity has a greater effect on the endophytic fungi than on epiphytic fungi. These findings demonstrate the role of host plant identity in driving phyllosphere epiphytic and endophytic community structure.
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Affiliation(s)
- Hui Yao
- State Key Laboratory of Mycology, Institute of Microbiology, Chinese Academy of Sciences, Beijing, 100101 People’s Republic of China
- College of Life Sciences, University of Chinese Academy of Sciences, Beijing, 100049 People’s Republic of China
| | - Xiang Sun
- State Key Laboratory of Mycology, Institute of Microbiology, Chinese Academy of Sciences, Beijing, 100101 People’s Republic of China
| | - Chao He
- Institute of Medicinal Plant Development, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing, 100193 People’s Republic of China
| | - Pulak Maitra
- State Key Laboratory of Mycology, Institute of Microbiology, Chinese Academy of Sciences, Beijing, 100101 People’s Republic of China
- College of Life Sciences, University of Chinese Academy of Sciences, Beijing, 100049 People’s Republic of China
| | - Xing-Chun Li
- State Key Laboratory of Mycology, Institute of Microbiology, Chinese Academy of Sciences, Beijing, 100101 People’s Republic of China
| | - Liang-Dong Guo
- State Key Laboratory of Mycology, Institute of Microbiology, Chinese Academy of Sciences, Beijing, 100101 People’s Republic of China
- College of Life Sciences, University of Chinese Academy of Sciences, Beijing, 100049 People’s Republic of China
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Haase MAB, Kominek J, Langdon QK, Kurtzman CP, Hittinger CT. Genome sequence and physiological analysis of Yamadazyma laniorum f.a. sp. nov. and a reevaluation of the apocryphal xylose fermentation of its sister species, Candida tenuis. FEMS Yeast Res 2018; 17:3737663. [PMID: 28419220 DOI: 10.1093/femsyr/fox019] [Citation(s) in RCA: 15] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/04/2017] [Accepted: 04/11/2017] [Indexed: 11/12/2022] Open
Abstract
Xylose fermentation is a rare trait that is immensely important to the cellulosic biofuel industry, and Candida tenuis is one of the few yeasts that has been reported with this trait. Here we report the isolation of two strains representing a candidate sister species to C. tenuis. Integrated analysis of genome sequence and physiology suggested the genetic basis of a number of traits, including variation between the novel species and C. tenuis in lactose metabolism due to the loss of genes encoding lactose permease and β-galactosidase in the former. Surprisingly, physiological characterization revealed that neither the type strain of C. tenuis nor this novel species fermented xylose in traditional assays. We reexamined three xylose-fermenting strains previously identified as C. tenuis and found that these strains belong to the genus Scheffersomyces and are not C. tenuis. We propose Yamadazyma laniorum f.a. sp. nov. to accommodate our new strains and designate its type strain as yHMH7 (=CBS 14780 = NRRL Y-63967T). Furthermore, we propose the transfer of Candida tenuis to the genus Yamadazyma as Yamadazyma tenuis comb. nov. This approach provides a roadmap for how integrated genome sequence and physiological analysis can yield insight into the mechanisms that generate yeast biodiversity.
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Affiliation(s)
- Max A B Haase
- Laboratory of Genetics, Genome Center of Wisconsin, J. F. Crow Institute for the Study of Evolution, Wisconsin Energy Institute, University of Wisconsin-Madison, Madison, WI 53706, USA.,DOE Great Lakes Bioenergy Research Center, University of Wisconsin-Madison, Madison, WI 53706, USA
| | - Jacek Kominek
- Laboratory of Genetics, Genome Center of Wisconsin, J. F. Crow Institute for the Study of Evolution, Wisconsin Energy Institute, University of Wisconsin-Madison, Madison, WI 53706, USA.,DOE Great Lakes Bioenergy Research Center, University of Wisconsin-Madison, Madison, WI 53706, USA
| | - Quinn K Langdon
- Laboratory of Genetics, Genome Center of Wisconsin, J. F. Crow Institute for the Study of Evolution, Wisconsin Energy Institute, University of Wisconsin-Madison, Madison, WI 53706, USA
| | - Cletus P Kurtzman
- National Center for Agricultural Utilization Research, ARS-USDA, 1815 North University St., Peoria, IL 61604, USA
| | - Chris Todd Hittinger
- Laboratory of Genetics, Genome Center of Wisconsin, J. F. Crow Institute for the Study of Evolution, Wisconsin Energy Institute, University of Wisconsin-Madison, Madison, WI 53706, USA.,DOE Great Lakes Bioenergy Research Center, University of Wisconsin-Madison, Madison, WI 53706, USA
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Khunnamwong P, Jindamorakot S, Limtong S. Endophytic yeast diversity in leaf tissue of rice, corn and sugarcane cultivated in Thailand assessed by a culture-dependent approach. Fungal Biol 2018; 122:785-799. [PMID: 30007429 DOI: 10.1016/j.funbio.2018.04.006] [Citation(s) in RCA: 20] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/19/2017] [Revised: 03/28/2018] [Accepted: 04/09/2018] [Indexed: 01/07/2023]
Abstract
Endophytic yeasts are yeast that can colonize healthy plant tissues without causing any damage to the host plant. This work aimed to explore the diversity of endophytic yeasts in leaf tissue of main agricultural crops (rice, corn and sugarcane) in Thailand, by a culture-dependent approach. A total of 311 leaf samples, consisting of rice (n = 100), corn (n = 109) and sugarcane (n = 102). From the tissue of rice (n = 92), corn (n = 76) and sugarcane (n = 78) leaf samples, 117, 118 and 123 yeast strains were respectively isolated and identified based on the D1/D2 region of the large subunit (LSU) rRNA gene sequence analysis to be yeast species in both the phyla Basidiomycota and Ascomycota. Higher numbers of basidiomycetous yeast than ascomycetous yeast were detected in the leaf tissue of the three crops. Pseudozyma (Dirkmeia) churashimaensis (Ustilaginales) was the most prevalent yeast species in the rice and corn leaves with relative frequencies (RF) of 35.9 % and 17.8 %, respectively. Whereas the predominant species in the sugarcane leaves was Meyerozyma caribbica (Saccharomycetales) with an RF of 14.6 %. In addition, six new yeast species and one new yeast genus were proposed. Our findings suggest that these plant species are good sources from which new yeast species may be isolated.
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Affiliation(s)
- Pannida Khunnamwong
- Department of Microbiology, Faculty of Science, Kasetsart University, Bangkok, Thailand
| | - Sasitorn Jindamorakot
- National Center for Genetic Engineering and Biotechnology (BIOTEC), National Science and Technology, Development Agency (NSTDA), Pathum Thani, Thailand
| | - Savitree Limtong
- Department of Microbiology, Faculty of Science, Kasetsart University, Bangkok, Thailand; Academy of Science, The Royal Society of Thailand, Bangkok, 10300, Thailand.
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Biocontrol activity of a cold-adapted yeast from Tibet against gray mold in cherry tomato and its action mechanism. Extremophiles 2017; 21:789-803. [DOI: 10.1007/s00792-017-0943-1] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/25/2017] [Accepted: 04/29/2017] [Indexed: 10/19/2022]
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