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de Freitas MS, de Carvalho CR, Pellizzari FM, Mansilla AO, Marambio J, de Almeida Alves TM, Murta SMF, Zani CL, Convey P, Rosa LH. Diversity, distribution and phytotoxic and anti-Trypanosoma activities of cultivable fungi associated with Magellan sub-Antarctic strait and Maritime Antarctic macroalgae. Extremophiles 2024; 28:46. [PMID: 39404901 DOI: 10.1007/s00792-024-01363-1] [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] [Received: 06/18/2024] [Accepted: 09/19/2024] [Indexed: 11/15/2024]
Abstract
We isolated and characterized the community of cultivable fungi associated with marine macroalgae present in the Magellan sub-Antarctic straits and the South Shetland Islands, Maritime Antarctica, and evaluated their production of bioactive metabolites. A total of 201 filamentous fungal isolates were obtained. The genera Antarctomyces, Pseudogymnoascus, Microdochium, Trichoderma, Cladosporium, Penicillium, Neoascochyta, Entomortierella and Linnemannia were associated with Antarctic macroalgae, with Neoascochyta paspali being the most abundant taxon. In contrast, 12 taxa representing Cadophora, Microdochium, Penicillium, Pseudogymnoascus were associated with macroalgae from the Magellan sub-Antarctic, with Penicillium dominating the assemblages. The diversity indices of the fungal communities associated with macroalgae in the two regions were similar. Among 177 fungal extracts assessed for metabolite production, 31 (17.5%) showed strong phytotoxic activity and 17 (9.6%) showed anti-Trypanosoma cruzi activity. Penicillium showed the highest phytotoxic and anti-Trypanosoma activity values. The detection of taxa in common between the polar and cold temperate zones reinforces the need for further investigations of the distribution of species in these distinct ecoregions. The detection of bioactive extracts produced particularly by Penicillium representatives reinforces the potential to obtain active molecules that can be explored as natural products or as sources of bioactive compounds with application in agriculture and biomedicine.
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Affiliation(s)
- Matheus Souto de Freitas
- Laboratório de Microbiologia Polar e Conexões Tropicais, Departamento de Microbiologia, Instituto de Ciências Biológicas, Universidade Federal de Minas Gerais, P. O. Box 486, Belo Horizonte, MG, CEP 31270-901, Brazil
| | - Camila Rodrigues de Carvalho
- Laboratório de Microbiologia Polar e Conexões Tropicais, Departamento de Microbiologia, Instituto de Ciências Biológicas, Universidade Federal de Minas Gerais, P. O. Box 486, Belo Horizonte, MG, CEP 31270-901, Brazil
| | - Franciane Maria Pellizzari
- Departamento de Ciências Biológicas, Universidade Estadual do Paraná, Campus Paranaguá, Paranaguá, PR, Brazil
| | - Andres Omar Mansilla
- Laboratory of Antarctic and Sub-Antarctic Marine Ecosystems, Magellan University, Punta Arenas, Chile
- Cape Horn International Center (CHIC), Puerto Williams, Chile
| | - Johanna Marambio
- Laboratory of Antarctic and Sub-Antarctic Marine Ecosystems, Magellan University, Punta Arenas, Chile
- Cape Horn International Center (CHIC), Puerto Williams, Chile
| | | | | | | | - Peter Convey
- Cape Horn International Center (CHIC), Puerto Williams, Chile
- British Antarctic Survey, NERC, High Cross, Madingley Road, Cambridge, CB3 0ET, UK
- Department of Zoology, University of Johannesburg, Auckland Park, 2006, South Africa
- Millennium Institute Biodiversity of Antarctic and Sub-Antarctic Ecosystems (BASE), Las Palmeras 3425, Santiago, Chile
| | - Luiz Henrique Rosa
- Laboratório de Microbiologia Polar e Conexões Tropicais, Departamento de Microbiologia, Instituto de Ciências Biológicas, Universidade Federal de Minas Gerais, P. O. Box 486, Belo Horizonte, MG, CEP 31270-901, Brazil.
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Yoshinaga TT, Giovanella P, de Farias GS, Dos Santos JA, Pellizzer EP, Sette LD. Fungi from Antarctic marine sediment: characterization and assessment for textile dye decolorization and detoxification. Braz J Microbiol 2024:10.1007/s42770-024-01485-w. [PMID: 39259479 DOI: 10.1007/s42770-024-01485-w] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/26/2023] [Accepted: 05/25/2024] [Indexed: 09/13/2024] Open
Abstract
Cold-adapted microorganisms can produce enzymes with activity at low and mild temperatures, which can be applied to environmental biotechnology. This study aimed to characterize 20 Antarctic fungi to identify their genus (ITS rDNA marker) and growth temperatures and evaluate their ability to decolorize and detoxify the textile dye indigo carmine (IC). An individual screening was performed to assess the decolorization and detoxification of IC by the isolates, as well as in consortia with other fungi. The isolates were affiliated with seven ascomycete genera: Aspergillus (n = 4), Cosmospora (n = 2), Leuconeurospora (n = 2), Penicillium (n = 3), Pseudogymnoascus (n = 6), Thelebolus (n = 2), and Trichoderma (n = 1). The two isolates from the genus Leuconeurospora were characterized as psychrophilic, while the others were psychrotolerant. The Penicillium isolates were able to decolorize between 60 and 82% of IC. The isolates identified as Pseudogymnoascus showed the best detoxification capacity, with results varying from 49 to 74%. The consortium using only Antarctic ascomycetes (C1) showed 45% of decolorization, while the consortia with the addition of basidiomycetes (C1 + Peniophora and C1 + Pholiota) showed 40% and 50%, respectively. The consortia C1 with the addition of the basidiomycetes presented a lower toxicity after the treatments. In addition, a higher fungal biomass was produced in the presence of dye when compared with the experiment without the dye, which can be indicative of dye metabolization. The results highlight the potential of marine-derived Antarctic fungi in the process of textile dye degradation. The findings encourage further studies to elucidate the degradation and detoxification pathways of the dye IC by these fungal isolates.
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Affiliation(s)
- Thaís Tiemi Yoshinaga
- Instituto de Biociências, Departamento de Biologia Geral e Aplicada, Universidade Estadual Paulista (UNESP), 24A, 1515, Rio Claro, CEP 13506-900, SP, Brazil
| | - Patrícia Giovanella
- Instituto de Biociências, Departamento de Biologia Geral e Aplicada, Universidade Estadual Paulista (UNESP), 24A, 1515, Rio Claro, CEP 13506-900, SP, Brazil
- Centro de Estudos Ambientais, Universidade Estadual Paulista (UNESP), Rio Claro, CEP 13506-900, SP, Brazil
| | - Gabriele Santana de Farias
- Instituto de Biociências, Departamento de Biologia Geral e Aplicada, Universidade Estadual Paulista (UNESP), 24A, 1515, Rio Claro, CEP 13506-900, SP, Brazil
| | - Juliana Aparecida Dos Santos
- Universidade do Vale do Sapucaí (Univás), Av. Prefeito Tuany Toledo, 470 - Fatima, Pouso Alegre, 37550-000, MG, Brazil
| | - Elisa Pais Pellizzer
- Instituto de Biociências, Departamento de Biologia Geral e Aplicada, Universidade Estadual Paulista (UNESP), 24A, 1515, Rio Claro, CEP 13506-900, SP, Brazil
| | - Lara Durães Sette
- Instituto de Biociências, Departamento de Biologia Geral e Aplicada, Universidade Estadual Paulista (UNESP), 24A, 1515, Rio Claro, CEP 13506-900, SP, Brazil.
- Centro de Estudos Ambientais, Universidade Estadual Paulista (UNESP), Rio Claro, CEP 13506-900, SP, Brazil.
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Gonçalves VN, Pimenta RS, Lopes FAC, Santos KCR, Silva MC, Convey P, Câmara PEAS, Rosa LH. Fungal and fungal-like diversity present in ornithogenically influenced maritime Antarctic soils assessed using metabarcoding. J Basic Microbiol 2024; 64:e2300601. [PMID: 38386010 DOI: 10.1002/jobm.202300601] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/13/2023] [Revised: 01/14/2024] [Accepted: 02/03/2024] [Indexed: 02/23/2024]
Abstract
We assessed soil fungal and fungal-like diversity using metabarcoding in ornithogenically influenced soils around nests of the bird species Phalacrocorax atriceps, Macronectes giganteus, Pygoscelis antarcticus, and Pygoscelis adelie on the South Shetland Islands, maritime Antarctic. A total of 1,392,784 fungal DNA reads was obtained and assigned to 186 amplicon sequence variants (ASVs). The dominant fungal phylum was Ascomycota, followed by Basidiomycota, Chytridiomycota, Blastocladiomycota, Rozellomycota, Mortierellomycota, Monoblepharomycota, Aphelidiomycota, Basidiobolomycota, Mucoromycota, and the fungal-like Oomycota (Stramenopila), in rank order. Antarctomyces sp., Blastocladiomycota sp., Pseudogymnoascus pannorum, Microascaceae sp., Mortierella sp., Lobulomycetales sp., Sordariomycetes sp., Fungal sp., Rhizophydiales sp., Pseudeurotiaceae sp., Chytridiomycota sp. 1, Filobasidiella sp., Tausonia pullulans, Betamyces sp., and Leucosporidium sp. were the most abundant assigned taxa. The fungal assemblages present in the different ornithogenically influenced soils displayed different diversity indices. However, in general, we detected high fungal diversity and few taxa shared between the samples. Despite the polyextreme environmental conditions experienced in these Antarctic soils, the metabarcoding approach detected a rich and complex fungal community dominated by saprophytes, but with some pathogenic taxa also present. The community was dominated by psychrophilic and psychrotolerant taxa, some apparently endemic to Antarctica, and those identified only at higher taxonomic levels, which may represent currently undescribed fungi. The mycobiome detected included taxa characterized by different ecological roles, including saprotrophic, human- and animal-associated, phytopathogenic, mutualistic, and cosmopolitan. These fungi may potentially be dispersed by birds or in the air column over great distances, including between different regions within Antarctica and from South America, Africa, and Oceania.
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Affiliation(s)
- Vívian Nicolau Gonçalves
- Departamento de Microbiologia, Universidade Federal de Minas Gerais, Belo Horizonte, Minas Gerais, Brasil
| | - Raphael Sânzio Pimenta
- Laboratório de Microbiologia Geral e Aplicada, Universidade Federal do Tocantins, Palmas, Tocantins, Brasil
| | - Fabyano A C Lopes
- Laboratório de Microbiologia, Universidade Federal do Tocantins, Palmas, Tocantins, Brasil
| | - Karita C R Santos
- Laboratório de Microbiologia, Universidade Federal do Tocantins, Palmas, Tocantins, Brasil
| | - Micheline C Silva
- Departamento de Botânica, Universidade de Brasília, Brasília, Brasil
| | - Peter Convey
- British Antarctic Survey, NERC, Cambridge, UK
- Department of Zoology, University of Johannesburg, Auckland Park, Johannesburg, South Africa
- Millennium Institute Biodiversity of Antarctic and Subantarctic Ecosystems (BASE), Santiago, Las Palmeras, Chile
- Cape Horn International Center (CHIC), Puerto Williams, Chile
| | - Paulo E A S Câmara
- Departamento de Botânica, Universidade de Brasília, Brasília, Brasil
- Programa de Pós-graduação em Fungos, Algas e Plantas, UFSC, Florianópolis, Brasil
| | - Luiz H Rosa
- Departamento de Microbiologia, Universidade Federal de Minas Gerais, Belo Horizonte, Minas Gerais, Brasil
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Teixeira EAA, de Souza LMD, Vieira R, Lirio JM, Coria SH, Convey P, Rosa CA, Rosa LH. Enzymes and biosurfactants of industrial interest produced by culturable fungi present in sediments of Boeckella Lake, Hope Bay, north-east Antarctic Peninsula. Extremophiles 2024; 28:30. [PMID: 38907846 DOI: 10.1007/s00792-024-01345-3] [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] [Received: 03/12/2024] [Accepted: 05/27/2024] [Indexed: 06/24/2024]
Abstract
This study characterized cultivable fungi present in sediments obtained from Boeckella Lake, Hope Bay, in the north-east of the Antarctic Peninsula, and evaluated their production of enzymes and biosurfactants of potential industrial interest. A total of 116 fungal isolates were obtained, which were classified into 16 genera within the phyla Ascomycota, Basidiomycota and Mortierellomycota, in rank. The most abundant genera of filamentous fungi included Pseudogymnoascus, Pseudeurotium and Antarctomyces; for yeasts, Thelebolales and Naganishia taxa were dominant. Overall, the lake sediments exhibited high fungal diversity and moderate richness and dominance. The enzymes esterase, cellulase and protease were the most abundantly produced by these fungi. Ramgea cf. ozimecii, Holtermanniella wattica, Leucosporidium creatinivorum, Leucosporidium sp., Mrakia blollopis, Naganishia sp. and Phenoliferia sp. displayed enzymatic index > 2. Fourteen isolates of filamentous fungi demonstrated an Emulsification Index 24% (EI24%) ≥ 50%; among them, three isolates of A. psychrotrophicus showed an EI24% > 80%. Boeckella Lake itself is in the process of drying out due to the impact of regional climate change, and may be lost completely in approaching decades, therefore hosts a threatened community of cultivable fungi that produce important biomolecules with potential application in biotechnological processes.
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Affiliation(s)
- Elisa Amorim Amâncio Teixeira
- Laboratório de Microbiologia Polar E Conexões Tropicais, Departamento de Microbiologia, Instituto de Ciências Biológicas, Universidade Federal de Minas Gerais, P. O. Box 486, Belo Horizonte, MG, CEP 31270-901, Brazil
| | - Láuren Machado Drumond de Souza
- Laboratório de Microbiologia Polar E Conexões Tropicais, Departamento de Microbiologia, Instituto de Ciências Biológicas, Universidade Federal de Minas Gerais, P. O. Box 486, Belo Horizonte, MG, CEP 31270-901, Brazil
| | - Rosemary Vieira
- Departamento de Geografia, Universidade Federal de Minas Gerais, Belo Horizonte, MG, Brazil
| | | | | | - Peter Convey
- British Antarctic Survey, NERC, High Cross, Madingley Road, Cambridge, CB3 0ET, UK
- Department of Zoology, University of Johannesburg, Auckland Park, 2006, South Africa
- Millennium Institute Biodiversity of Antarctic and Subantarctic Ecosystems (BASE), Las Palmeras 3425, Santiago, Chile
- Cape Horn International Center (CHIC), Puerto Williams, Chile
| | - Carlos Augusto Rosa
- Laboratório de Microbiologia Polar E Conexões Tropicais, Departamento de Microbiologia, Instituto de Ciências Biológicas, Universidade Federal de Minas Gerais, P. O. Box 486, Belo Horizonte, MG, CEP 31270-901, Brazil
| | - Luiz Henrique Rosa
- Laboratório de Microbiologia Polar E Conexões Tropicais, Departamento de Microbiologia, Instituto de Ciências Biológicas, Universidade Federal de Minas Gerais, P. O. Box 486, Belo Horizonte, MG, CEP 31270-901, Brazil.
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Rabelo NG, Gonçalves VN, Carvalho MA, Scheffler SM, Santiago G, Sucerquia PA, Oliveira FS, Campos LP, Lopes FAC, Santos KCR, Silva MC, Convey P, Câmara PEAS, Rosa LH. Endolithic Fungal Diversity in Antarctic Oligocene Rock Samples Explored Using DNA Metabarcoding. BIOLOGY 2024; 13:414. [PMID: 38927294 PMCID: PMC11200754 DOI: 10.3390/biology13060414] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/18/2024] [Revised: 05/15/2024] [Accepted: 05/22/2024] [Indexed: 06/28/2024]
Abstract
In this study, we evaluated the fungal diversity present associated with cores of Oligocene rocks using a DNA metabarcoding approach. We detected 940,969 DNA reads grouped into 198 amplicon sequence variants (ASVs) representing the phyla Ascomycota, Basidiomycota, Mortierellomycota, Chytridiomycota, Mucoromycota, Rozellomycota, Blastocladiomycota, Monoblepharomycota, Zoopagomycota, Aphelidiomycota (Fungi) and the fungal-like Oomycota (Stramenopila), in rank abundance order. Pseudogymnoascus pannorum, Penicillium sp., Aspergillus sp., Cladosporium sp., Aspergillaceae sp. and Diaporthaceae sp. were assessed to be dominant taxa, with 22 fungal ASVs displaying intermediate abundance and 170 being minor components of the assigned fungal diversity. The data obtained displayed high diversity indices, while rarefaction indicated that the majority of the diversity was detected. However, the diversity indices varied between the cores analysed. The endolithic fungal community detected using a metabarcoding approach in the Oligocene rock samples examined contains a rich and complex mycobiome comprising taxa with different lifestyles, comparable with the diversity reported in recent studies of a range of Antarctic habitats. Due to the high fungal diversity detected, our results suggest the necessity of further research to develop strategies to isolate these fungi in culture for evolutionary, physiological, and biogeochemical studies, and to assess their potential role in biotechnological applications.
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Affiliation(s)
- Natana G. Rabelo
- Departamento de Microbiologia, Universidade Federal de Minas Gerais, Belo Horizonte 31270-901, Brazil; (N.G.R.); (V.N.G.)
| | - Vívian N. Gonçalves
- Departamento de Microbiologia, Universidade Federal de Minas Gerais, Belo Horizonte 31270-901, Brazil; (N.G.R.); (V.N.G.)
| | - Marcelo A. Carvalho
- Departamento de Geologia e Paleontologia, Museu Nacional, Universidade Federal do Rio de Janeiro, Rio de Janeiro 20940-040, Brazil; (M.A.C.); (S.M.S.); (G.S.)
| | - Sandro M. Scheffler
- Departamento de Geologia e Paleontologia, Museu Nacional, Universidade Federal do Rio de Janeiro, Rio de Janeiro 20940-040, Brazil; (M.A.C.); (S.M.S.); (G.S.)
| | - Gustavo Santiago
- Departamento de Geologia e Paleontologia, Museu Nacional, Universidade Federal do Rio de Janeiro, Rio de Janeiro 20940-040, Brazil; (M.A.C.); (S.M.S.); (G.S.)
| | - Paula A. Sucerquia
- Departmento de Geologia, Universidade Federal de Pernambuco, Recife 50740-540, Brazil;
| | - Fabio S. Oliveira
- Departamento de Geografia, Universidade Federal de Minas Gerais, Belo Horizonte 31270-901, Brazil; (F.S.O.); (L.P.C.)
| | - Larissa P. Campos
- Departamento de Geografia, Universidade Federal de Minas Gerais, Belo Horizonte 31270-901, Brazil; (F.S.O.); (L.P.C.)
| | - Fabyano A. C. Lopes
- Laboratório de Microbiologia, Universidade Federal do Tocantins, Porto Nacional 77500-000, Brazil; (F.A.C.L.); (K.C.R.S.)
| | - Karita C. R. Santos
- Laboratório de Microbiologia, Universidade Federal do Tocantins, Porto Nacional 77500-000, Brazil; (F.A.C.L.); (K.C.R.S.)
| | - Micheline C. Silva
- Departamento de Botânica, Universidade de Brasília, Brasília 70297-400, Brazil; (M.C.S.)
| | - Peter Convey
- British Antarctic Survey, NERC, High Cross, Madingley Road, Cambridge CB3 0ET, UK;
- Department of Zoology, University of Johannesburg, Auckland Park 2006, South Africa
- Millennium Institute Biodiversity of Antarctic and Subantarctic Ecosystems (BASE), Las Palmeras 3425, Santiago 8320000, Chile
- Cape Horn International Center (CHIC), Puerto Williams 6350000, Chile
| | - Paulo E. A. S. Câmara
- Departamento de Botânica, Universidade de Brasília, Brasília 70297-400, Brazil; (M.C.S.)
- Programa de Pós-Graduação em Fungos, Algas e Plantas, Universidade Federal de Santa Catarina, Florianópolis 88040-900, Brazil
| | - Luiz H. Rosa
- Departamento de Microbiologia, Universidade Federal de Minas Gerais, Belo Horizonte 31270-901, Brazil; (N.G.R.); (V.N.G.)
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Oono R, Chou V, Irving M. How do phytophagous insects affect phyllosphere fungi? Tracking fungi from milkweed to monarch caterpillar frass reveals communities dominated by fungal yeast. ENVIRONMENTAL MICROBIOLOGY REPORTS 2024; 16:e13213. [PMID: 38738810 PMCID: PMC11089944 DOI: 10.1111/1758-2229.13213] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/28/2023] [Accepted: 10/26/2023] [Indexed: 05/14/2024]
Abstract
Since a significant proportion of plant matter is consumed by herbivores, a necessary adaptation for many phyllosphere microbes could be to survive through the guts of herbivores. While many studies explore the gut microbiome of herbivores by surveying the microbiome in their frass, few studies compare the phyllosphere microbiome to the gut microbiome of herbivores. High-throughput metabarcode sequencing was used to track the fungal community from milkweed (Asclepias spp.) leaves to monarch caterpillar frass. The most commonly identified fungal taxa that dominated the caterpillar frass after the consumption of leaves were yeasts, mostly belonging to the Basidiomycota phylum. While most fungal communities underwent significant bottlenecks and some yeast taxa increased in relative abundance, a consistent directional change in community structure was not identified from leaf to caterpillar frass. These results suggest that some phyllosphere fungi, especially diverse yeasts, can survive herbivory, but whether herbivory is a key stage of their life cycle remains uncertain. For exploring phyllosphere fungi and the potential coprophilous lifestyles of endophytic and epiphytic fungi, methods that target yeast and Basidiomycota fungi are recommended.
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Affiliation(s)
- Ryoko Oono
- Department of Ecology, Evolution, and Marine BiologyUniversity of CaliforniaSanta BarbaraCaliforniaUSA
| | - Vanessa Chou
- Department of Ecology, Evolution, and Marine BiologyUniversity of CaliforniaSanta BarbaraCaliforniaUSA
| | - Mari Irving
- Department of Ecology, Evolution, and Marine BiologyUniversity of CaliforniaSanta BarbaraCaliforniaUSA
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Abu Bakar N, Chung BLY, Smykla J, Karsani SA, Alias SA. Proteomic characterization of Pseudogymnoascus spp. isolates from polar and temperate regions. Mycologia 2024; 116:449-463. [PMID: 38484286 DOI: 10.1080/00275514.2024.2313429] [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] [Received: 09/26/2023] [Accepted: 01/30/2024] [Indexed: 05/01/2024]
Abstract
Proteomics has been used extensively in the field of mycology, mainly in trying to understand the complex network of protein-protein interactions that has been implicated in the molecular functions of fungi. It is also a useful tool to compare metabolic differences within a genus. Species of Pseudogymnoascus, a genus under the phyla Ascomycota, have been shown to play an important role in the soil environment. They have been found in both polar and temperate regions and are a known producer of many extracellular hydrolases that contribute to soil decomposition. Despite the apparent importance of Pseudogymnoascus spp. in the soil ecosystem, investigations into their molecular functions are still very limited. In the present study, proteomic characterization of six Pseudogymnoascus spp. isolated from three biogeographic regions (the Arctic, Antarctic, and temperate regions) was carried out using tandem mass spectrometry. Prior to proteomic analysis, the optimization for protein extraction was carried out. Trichloroacetic acid‑acetone‑phenol was found to be the best extraction method to be used for proteomic profiling of Pseudogymnoascus spp. The proteomic analysis identified 2003 proteins that were successfully mapped to the UniProtKB database. The identified proteins were clustered according to their biological processes and molecular functions. The shared proteins found in all Pseudogymnoascus spp. (1201 proteins) showed a significantly close relationship in their basic cellular functions, despite differences in morphological structures. Analysis of Pseudogymnoascus spp. proteome also identified proteins that were unique to each region. However, a high number of these proteins belonged to protein families of similar molecular functions, namely, transferases and hydrolases. Our proteomic data can be used as a reference for Pseudogymnoascus spp. across different global regions and a foundation for future soil ecosystem function research.
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Affiliation(s)
- Nurlizah Abu Bakar
- Institute of Ocean and Earth Sciences, Universiti Malaya, C308, Institute of Advanced Studies Building, Kuala Lumpur 50603, Malaysia
- National Antarctic Research Centre, Universiti Malaya, B303, Institute of Advanced Studies Building, Kuala Lumpur 50603, Malaysia
| | - Benjamin Lau Yii Chung
- Advanced Biotechnology and Breeding Centre, Persiaran Institusi, Malaysian Palm Oil Board, No. 6, Bandar Baru Bangi, Kajang, Selangor 43000, Malaysia
| | - Jerzy Smykla
- Department of Biodiversity, Institute of Nature Conservation, Polish Academy of Sciences, Mickiewicza 33, Krakow 31-120, Poland
| | - Saiful Anuar Karsani
- Institute of Biological Sciences, Faculty of Science, Universiti Malaya, Kuala Lumpur 50603, Malaysia
| | - Siti Aisyah Alias
- Institute of Ocean and Earth Sciences, Universiti Malaya, C308, Institute of Advanced Studies Building, Kuala Lumpur 50603, Malaysia
- National Antarctic Research Centre, Universiti Malaya, B303, Institute of Advanced Studies Building, Kuala Lumpur 50603, Malaysia
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8
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de Menezes GCA, Lopes FAC, Santos KCR, Silva MC, Convey P, Câmara PEAS, Rosa LH. Fungal diversity present in snow sampled in summer in the north-west Antarctic Peninsula and the South Shetland Islands, Maritime Antarctica, assessed using metabarcoding. Extremophiles 2024; 28:23. [PMID: 38575688 DOI: 10.1007/s00792-024-01338-2] [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] [Received: 10/24/2023] [Accepted: 03/07/2024] [Indexed: 04/06/2024]
Abstract
We assessed the fungal diversity present in snow sampled during summer in the north-west Antarctic Peninsula and the South Shetland Islands, maritime Antarctica using a metabarcoding approach. A total of 586,693 fungal DNA reads were obtained and assigned to 203 amplicon sequence variants (ASVs). The dominant phylum was Ascomycota, followed by Basidiomycota, Mortierellomycota, Chytridiomycota and Mucoromycota. Penicillium sp., Pseudogymnoascus pannorum, Coniochaeta sp., Aspergillus sp., Antarctomyces sp., Phenoliferia sp., Cryolevonia sp., Camptobasidiaceae sp., Rhodotorula mucilaginosa and Bannozyma yamatoana were assessed as abundant taxa. The snow fungal diversity indices were high but varied across the different locations sampled. Of the fungal ASVs detected, only 28 were present all sampling locations. The 116 fungal genera detected in the snow were dominated by saprotrophic taxa, followed by symbiotrophic and pathotrophic. Our data indicate that, despite the low temperature and oligotrophic conditions, snow can host a richer mycobiome than previously reported through traditional culturing studies. The snow mycobiome includes a complex diversity dominated by cosmopolitan, cold-adapted, psychrophilic and endemic taxa. While saprophytes dominate this community, a range of other functional groups are present.
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Affiliation(s)
| | - Fabyano A C Lopes
- Laboratório de Microbiologia, Universidade Federal do Tocantins, Palmas, Brazil
| | - Karita C R Santos
- Laboratório de Microbiologia, Universidade Federal do Tocantins, Palmas, Brazil
| | - Micheline C Silva
- Departamento de Botânica, Universidade de Brasília, Brasília, Brazil
| | - Peter Convey
- British Antarctic Survey, NERC, High Cross, Cambridge, CB3 0ET, UK
- Department of Zoology, University of Johannesburg, Johannesburg, South Africa
- Millennium Institute Biodiversity of Antarctic and Subantarctic Ecosystems (BASE), Santiago, Chile
- Cape Horn International Center (CHIC), Puerto Williams, Chile
| | - Paulo E A S Câmara
- Departamento de Botânica, Universidade de Brasília, Brasília, Brazil
- Programa de Pós-Graduação Em Fungos, Algas e Plantas, UFSC, Florianópolis, Brazil
| | - Luiz H Rosa
- Departamento de Microbiologia, Universidade Federal de Minas Gerais, Minas Gerais, Brazil.
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da Silva MK, Barreto DLC, Vieira R, Neto AA, de Oliveira FS, Convey P, Rosa CA, Duarte AWF, Rosa LH. Diversity and enzymatic, biosurfactant and phytotoxic activities of culturable Ascomycota fungi present in marine sediments obtained near the South Shetland Islands, maritime Antarctica. Extremophiles 2024; 28:20. [PMID: 38493412 DOI: 10.1007/s00792-024-01336-4] [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] [Received: 12/09/2023] [Accepted: 02/11/2024] [Indexed: 03/18/2024]
Abstract
We studied the culturable fungal community recovered from deep marine sediments in the maritime Antarctic, and assessed their capabilities to produce exoenzymes, emulsifiers and metabolites with phytotoxic activity. Sixty-eight Ascomycota fungal isolates were recovered and identified. The most abundant taxon recovered was the yeast Meyerozyma guilliermondii, followed by the filamentous fungi Penicillium chrysogenum, P. cf. palitans, Pseudeurotium cf. bakeri, Thelebolus balaustiformis, Antarctomyces psychrotrophicus and Cladosporium sp. Diversity indices displayed low values overall, with the highest values obtained at shallow depth, decreasing to the deepest location sampled. Only M. guilliermondii and P. cf. palitans were detected in the sediments at all depths sampled, and were the most abundant taxa at all sample sites. The most abundant enzymes detected were proteases, followed by invertases, cellulases, lipases, carrageenases, agarases, pectinases and esterases. Four isolates showed good biosurfactant activity, particularly the endemic species A. psychrotrophicus. Twenty-four isolates of P. cf. palitans displayed strong phytotoxic activities against the models Lactuca sativa and Allium schoenoprasum. The cultivable fungi recovered demonstrated good biosynthetic activity in the production of hydrolytic exoenzymes, biosurfactant molecules and metabolites with phytotoxic activity, reinforcing the importance of documenting the taxonomic, ecological and biotechnological properties of fungi present in deep oceanic sediments of the Southern Ocean.
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Affiliation(s)
- Mayanne Karla da Silva
- Departamento de Microbiologia, Instituto de Ciências Biológicas, Universidade Federal de Minas Gerais, Belo Horizonte, MG, Brazil
| | - Débora Luiza Costa Barreto
- Departamento de Microbiologia, Instituto de Ciências Biológicas, Universidade Federal de Minas Gerais, Belo Horizonte, MG, Brazil
| | - Rosemary Vieira
- Instituto de Geociências, Universidade Federal Fluminense, Rio de Janeiro, RJ, Brazil
| | - Arthur Ayres Neto
- Instituto de Geociências, Universidade Federal Fluminense, Rio de Janeiro, RJ, Brazil
| | | | - Peter Convey
- British Antarctic Survey, NERC, High Cross, Madingley Road, Cambridge, CB3 0ET, UK
- Department of Zoology, University of Johannesburg, Auckland Park, 2006, South Africa
- Millennium Institute Biodiversity of Antarctic and Subantarctic Ecosystems (BASE), Las Palmeras 3425, Santiago, Chile
- Cape Horn International Center (CHIC), Puerto Williams, Chile
| | - Carlos Augusto Rosa
- Departamento de Microbiologia, Instituto de Ciências Biológicas, Universidade Federal de Minas Gerais, Belo Horizonte, MG, Brazil
| | | | - Luiz Henrique Rosa
- Departamento de Microbiologia, Instituto de Ciências Biológicas, Universidade Federal de Minas Gerais, Belo Horizonte, MG, Brazil.
- Departamento de Microbiologia, Instituto de Ciências Biológicas, Universidade Federal de Minas Gerais, P. O. Box 486, Belo Horizonte, MG, CEP 31270-901, Brazil.
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10
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Touchette D, Gostinčar C, Whyte LG, Altshuler I. Lichen-associated microbial members are prevalent in the snow microbiome of a sub-arctic alpine tundra. FEMS Microbiol Ecol 2023; 99:fiad151. [PMID: 37977855 DOI: 10.1093/femsec/fiad151] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/27/2023] [Revised: 09/27/2023] [Accepted: 11/16/2023] [Indexed: 11/19/2023] Open
Abstract
Snow is the largest component of the cryosphere, with its cover and distribution rapidly decreasing over the last decade due to climate warming. It is imperative to characterize the snow (nival) microbial communities to better understand the role of microorganisms inhabiting these rapidly changing environments. Here, we investigated the core nival microbiome, the cultivable microbial members, and the microbial functional diversity of the remote Uapishka mountain range, a massif of alpine sub-arctic tundra and boreal forest. Snow samples were taken over a two-month interval along an altitude gradient with varying degree of anthropogenic traffic and vegetation cover. The core snow alpine tundra/boreal microbiome, which was present across all samples, constituted of Acetobacterales, Rhizobiales and Acidobacteriales bacterial orders, and of Mycosphaerellales and Lecanorales fungal orders, with the dominant fungal taxa being associated with lichens. The snow samples had low active functional diversity, with Richness values ranging from 0 to 19.5. The culture-based viable microbial enumeration ranged from 0 to 8.05 × 103 CFUs/mL. We isolated and whole-genome sequenced five microorganisms which included three fungi, one alga, and one potentially novel bacterium of the Lichenihabitans genus; all of which appear to be part of lichen-associated taxonomic clades.
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Affiliation(s)
- D Touchette
- Department of Natural Resource Sciences, McGill University, Sainte-Anne-de-Bellevue, H9X 3V9, Canada
- River Ecosystems Laboratory, ALPOLE, School of Architecture, Civil and Environmental Engineering, École Polytechnique Fédérale de Lausanne, CH-1950, Sion, Switzerland
| | - C Gostinčar
- University of Ljubljana, Department of Biology, Biotechnical Faculty, Ljubljana 1000, Slovenia
| | - L G Whyte
- Department of Natural Resource Sciences, McGill University, Sainte-Anne-de-Bellevue, H9X 3V9, Canada
| | - I Altshuler
- Department of Natural Resource Sciences, McGill University, Sainte-Anne-de-Bellevue, H9X 3V9, Canada
- MACE Laboratory, ALPOLE, School of Architecture, Civil and Environmental Engineering, École Polytechnique Fédérale de Lausanne, CH-1950, Sion, Switzerland
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11
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Marchetta A, Papale M, Rappazzo AC, Rizzo C, Camacho A, Rochera C, Azzaro M, Urzì C, Lo Giudice A, De Leo F. A Deep Insight into the Diversity of Microfungal Communities in Arctic and Antarctic Lakes. J Fungi (Basel) 2023; 9:1095. [PMID: 37998900 PMCID: PMC10672340 DOI: 10.3390/jof9111095] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/04/2023] [Revised: 10/30/2023] [Accepted: 11/03/2023] [Indexed: 11/25/2023] Open
Abstract
We assessed fungal diversity in water and sediment samples obtained from five Arctic lakes in Ny-Ålesund (Svalbard Islands, High Arctic) and five Antarctic lakes on Livingston and Deception Islands (South Shetland Islands), using DNA metabarcoding. A total of 1,639,074 fungal DNA reads were detected and assigned to 5980 ASVs amplicon sequence variants (ASVs), with only 102 (1.7%) that were shared between the two Polar regions. For Arctic lakes, unknown fungal taxa dominated the sequence assemblages, suggesting the dominance of possibly undescribed fungi. The phylum Chytridiomycota was the most represented in the majority of Arctic and Antarctic samples, followed by Rozellomycota, Ascomycota, Basidiomycota, and the less frequent Monoblepharomycota, Aphelidiomycota, Mortierellomycota, Mucoromycota, and Neocallimastigomycota. At the genus level, the most abundant genera included psychrotolerant and cosmopolitan cold-adapted fungi including Alternaria, Cladosporium, Cadophora, Ulvella (Ascomycota), Leucosporidium, Vishniacozyma (Basidiomycota), and Betamyces (Chytridiomycota). The assemblages displayed high diversity and richness. The assigned diversity was composed mainly of taxa recognized as saprophytic fungi, followed by pathogenic and symbiotic fungi.
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Affiliation(s)
- Alessia Marchetta
- Department of Chemical, Biological, Pharmaceutical and Environmental Sciences, University of Messina, Viale F. Stagno d’Alcontres, 31, 98166 Messina, Italy
| | - Maria Papale
- Institute of Polar Sciences, National Research Council (CNR-ISP), Spianata S. Raineri 86, 98122 Messina, Italy (A.L.G.)
| | - Alessandro Ciro Rappazzo
- Institute of Polar Sciences, National Research Council (CNR-ISP), Spianata S. Raineri 86, 98122 Messina, Italy (A.L.G.)
| | - Carmen Rizzo
- Institute of Polar Sciences, National Research Council (CNR-ISP), Spianata S. Raineri 86, 98122 Messina, Italy (A.L.G.)
- Stazione Zoologica Anton Dohrn, National Institute of Biology, Sicily Marine Centre, Department Ecosustainable Marine Biotechnology, Villa Pace, Contrada Porticatello 29, 98167 Messina, Italy
| | - Antonio Camacho
- Cavanilles Institute of Biodiversity and Evolutionary Biology, University of Valencia, C/Catédratico José Beltrán, 2, E46980 Paterna, Spain
| | - Carlos Rochera
- Cavanilles Institute of Biodiversity and Evolutionary Biology, University of Valencia, C/Catédratico José Beltrán, 2, E46980 Paterna, Spain
| | - Maurizio Azzaro
- Institute of Polar Sciences, National Research Council (CNR-ISP), Spianata S. Raineri 86, 98122 Messina, Italy (A.L.G.)
| | - Clara Urzì
- Department of Chemical, Biological, Pharmaceutical and Environmental Sciences, University of Messina, Viale F. Stagno d’Alcontres, 31, 98166 Messina, Italy
| | - Angelina Lo Giudice
- Institute of Polar Sciences, National Research Council (CNR-ISP), Spianata S. Raineri 86, 98122 Messina, Italy (A.L.G.)
| | - Filomena De Leo
- Department of Chemical, Biological, Pharmaceutical and Environmental Sciences, University of Messina, Viale F. Stagno d’Alcontres, 31, 98166 Messina, Italy
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12
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Sannino C, Borruso L, Mezzasoma A, Turchetti B, Ponti S, Buzzini P, Mimmo T, Guglielmin M. The Unusual Dominance of the Yeast Genus Glaciozyma in the Deeper Layer in an Antarctic Permafrost Core (Adélie Cove, Northern Victoria Land) Is Driven by Elemental Composition. J Fungi (Basel) 2023; 9:jof9040435. [PMID: 37108890 PMCID: PMC10145851 DOI: 10.3390/jof9040435] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/15/2023] [Revised: 03/24/2023] [Accepted: 03/28/2023] [Indexed: 04/05/2023] Open
Abstract
Rock glaciers are relatively common in Antarctic permafrost areas and could be considered postglacial cryogenic landforms. Although the extensive presence of rock glaciers, their chemical–physical and biotic composition remain scarce. Chemical–physical parameters and fungal community (by sequencing the ITS2 rDNA, Illumina MiSeq) parameters of a permafrost core were studied. The permafrost core, reaching a depth of 6.10 m, was divided into five units based on ice content. The five units (U1–U5) of the permafrost core exhibited several significant (p < 0.05) differences in terms of chemical and physical characteristics, and significant (p < 0.05) higher values of Ca, K, Li, Mg, Mn, S, and Sr were found in U5. Yeasts dominated on filamentous fungi in all the units of the permafrost core; additionally, Ascomycota was the prevalent phylum among filamentous forms, while Basidiomycota was the dominant phylum among yeasts. Surprisingly, in U5 the amplicon sequence variants (ASVs) assigned to the yeast genus Glaciozyma represented about two-thirds of the total reads. This result may be considered extremely rare in Antarctic yeast diversity, especially in permafrost habitats. Based on of the chemical–physical composition of the units, the dominance of Glaciozyma in the deepest unit was correlated with the elemental composition of the core.
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Affiliation(s)
- Ciro Sannino
- Industrial Yeasts Collection DBVPG, Department of Agricultural, Food and Environmental Sciences, University of Perugia, 06121 Perugia, Italy
| | - Luigimaria Borruso
- Faculty of Science and Technology, Free University of Bozen-Bolzano, 39100 Bozen-Bolzano, Italy
| | - Ambra Mezzasoma
- Industrial Yeasts Collection DBVPG, Department of Agricultural, Food and Environmental Sciences, University of Perugia, 06121 Perugia, Italy
| | - Benedetta Turchetti
- Industrial Yeasts Collection DBVPG, Department of Agricultural, Food and Environmental Sciences, University of Perugia, 06121 Perugia, Italy
| | - Stefano Ponti
- Department of Theoretical and Applied Sciences, Insubria University, 21100 Varese, Italy
| | - Pietro Buzzini
- Industrial Yeasts Collection DBVPG, Department of Agricultural, Food and Environmental Sciences, University of Perugia, 06121 Perugia, Italy
| | - Tanja Mimmo
- Faculty of Science and Technology, Free University of Bozen-Bolzano, 39100 Bozen-Bolzano, Italy
| | - Mauro Guglielmin
- Department of Theoretical and Applied Sciences, Insubria University, 21100 Varese, Italy
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13
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de Souza LMD, Teixeira EAA, da Costa Coelho L, Lopes FAC, Convey P, Carvalho-Silva M, Câmara PEAS, Rosa LH. Cryptic fungal diversity revealed by DNA metabarcoding in historic wooden structures at Whalers Bay, Deception Island, maritime Antarctic. Braz J Microbiol 2023; 54:213-222. [PMID: 36435957 PMCID: PMC9944150 DOI: 10.1007/s42770-022-00869-0] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/31/2022] [Accepted: 11/02/2022] [Indexed: 11/28/2022] Open
Abstract
We provide the first assessment of fungal diversity associated with historic wooden structures at Whalers Bay (Heritage Monument 71), Deception Island, maritime Antarctic, using DNA metabarcoding. We detected a total of 177 fungal amplicon sequence variants (ASVs) dominated by the phyla Ascomycota, Basidiomycota, Mortierellomycota, Chytridiomycota, Monoblepharomycota, Rozellomycota, and Zoopagomycota. The assemblages were dominated by Helotiales sp. 1 and Herpotrichiellaceae sp. 1. Functional assignments indicated that the taxa detected were dominated by saprotrophic, plant and animal pathogenic, and symbiotic taxa. Metabarcoding revealed the presence of a rich and complex fungal community, which may be due to the wooden structures acting as baits attracting taxa to niches sheltered against extreme conditions, generating a hotspot for fungi in Antarctica. The sequences assigned included both cosmopolitan and endemic taxa, as well as potentially unreported diversity. The detection of DNA assigned to taxa of human and animal opportunistic pathogens raises a potential concern as Whalers Bay is one of the most popular visitor sites in Antarctica. The use of metabarcoding to detect DNA present in environmental samples does not confirm the presence of viable or metabolically active fungi and further studies using different culturing conditions and media, different growth temperatures and incubation periods, in combination with further molecular approaches such as shotgun sequencing are now required to clarify the functional ecology of these fungi.
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Affiliation(s)
- Láuren Machado Drumond de Souza
- Laboratório de Microbiologia Polar E Conexões Tropicais, Departamento de Microbiologia, Instituto de Ciências Biológicas, Universidade Federal de Minas Gerais, P. O. Box 486, Belo Horizonte, MG, CEP, 31270-901, Brasil
| | - Elisa Amorim Amâncio Teixeira
- Laboratório de Microbiologia Polar E Conexões Tropicais, Departamento de Microbiologia, Instituto de Ciências Biológicas, Universidade Federal de Minas Gerais, P. O. Box 486, Belo Horizonte, MG, CEP, 31270-901, Brasil
| | - Lívia da Costa Coelho
- Laboratório de Microbiologia Polar E Conexões Tropicais, Departamento de Microbiologia, Instituto de Ciências Biológicas, Universidade Federal de Minas Gerais, P. O. Box 486, Belo Horizonte, MG, CEP, 31270-901, Brasil
| | | | - Peter Convey
- British Antarctic Survey, NERC, High Cross, Madingley Road, Cambridge, CB3 0ET, UK
- Department of Zoology, University of Johannesburg, PO Box 524, Auckland Park, 2006, South Africa
| | | | | | - Luiz Henrique Rosa
- Laboratório de Microbiologia Polar E Conexões Tropicais, Departamento de Microbiologia, Instituto de Ciências Biológicas, Universidade Federal de Minas Gerais, P. O. Box 486, Belo Horizonte, MG, CEP, 31270-901, Brasil.
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14
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Maeng S, Park Y, Sung GH, Lee HB, Kim MK, Srinivasan S. Description of Vishniacozyma terrae sp. nov. and Dioszegia terrae sp. nov., Two Novel Basidiomycetous Yeast Species Isolated from Soil in Korea. MYCOBIOLOGY 2023; 50:439-447. [PMID: 36721789 PMCID: PMC9848262 DOI: 10.1080/12298093.2022.2147135] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 10/26/2022] [Accepted: 11/09/2022] [Indexed: 06/18/2023]
Abstract
Two strains, YP344 and YP579 were isolated from soil samples in Pocheon City, Gyeonggi Province, South Korea. The strains YP344 and YP579 belong to the genus Vishniacozyma and Dioszegia, respectively. The molecular phylogenetic analysis showed that the strain YP344 was closely related to Vishniacozyma peneaus. Strain YP344T differed by four nucleotide substitutions with no gap (0.70%) in the D1/D2 domain of the LSU rRNA gene and 16 nucleotide substitutions with 8 gaps (5.76%) in the ITS region. On the other hand, the strain YP579T varied from the type strain of the most closely related species, Dioszegia zsoltii var. zsoltii, by 6 nucleotide substitutions with four gaps (1.64%) in the D1/D2 domain of LSU rRNA gene and 26 nucleotide substitutions with 14 gaps (8.16%) in the ITS region. Therefore, the name Vishniacozyma terrae sp. nov. and Dioszegia terrae sp. nov. are proposed, with type strains YP344T (KCTC27988T) and YP579T (KCTC 27998T), respectively.
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Affiliation(s)
- Soohyun Maeng
- Department of Bio and Environmental Technology, College of Natural Science, Seoul Women’s University, Seoul, Republic of Korea
| | - Yuna Park
- Department of Bio and Environmental Technology, College of Natural Science, Seoul Women’s University, Seoul, Republic of Korea
- Division of Bioresources Bank, Honam National Institute of Biological Resources, Mokpo, South Korea
| | - Gi-Ho Sung
- Translational Research Division, Biomedical Institute of Mycological Resource, International St. Mary’s Hospital and College of Medicine, Catholic Kwandong University, Incheon, Korea
- Department of Microbiology, International St. Mary’s Hospital and College of Medicine, Catholic Kwandong University, Gangneung, Korea
| | - Hyang Burm Lee
- Environmental Microbiology Lab, Department of Agricultural Biological Chemistry, College of Agriculture and Life Sciences, Chonnam National University, Gwangju, Korea
| | - Myung Kyum Kim
- Department of Bio and Environmental Technology, College of Natural Science, Seoul Women’s University, Seoul, Republic of Korea
| | - Sathiyaraj Srinivasan
- Department of Bio and Environmental Technology, College of Natural Science, Seoul Women’s University, Seoul, Republic of Korea
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15
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Diversity and ecology of fungal assemblages present in lake sediments at Clearwater Mesa, James Ross Island, Antarctica, assessed using metabarcoding of environmental DNA. Fungal Biol 2022; 126:640-647. [DOI: 10.1016/j.funbio.2022.08.002] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/28/2022] [Revised: 07/23/2022] [Accepted: 08/08/2022] [Indexed: 11/19/2022]
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16
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Diversity, distribution and ecology of fungal communities present in Antarctic lake sediments uncovered by DNA metabarcoding. Sci Rep 2022; 12:8407. [PMID: 35589789 PMCID: PMC9120451 DOI: 10.1038/s41598-022-12290-6] [Citation(s) in RCA: 14] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/09/2022] [Accepted: 04/29/2022] [Indexed: 01/04/2023] Open
Abstract
We assessed fungal diversity in sediments obtained from four lakes in the South Shetland Islands and James Ross Island, Antarctica, using DNA metabarcoding. We detected 218 amplicon sequence variants (ASVs) dominated by the phyla Ascomycota, Basidiomycota, Mortierellomycota, Mucoromycota and Chytridiomycota. In addition, the rare phyla Aphelidiomycota, Basidiobolomycota, Blastocladiomycota, Monoblepharomycota, Rozellomycota and Zoopagomycota as well as fungal-like Straminopila belonging to the phyla Bacillariophyta and Oomycota were detected. The fungal assemblages were dominated by unknown fungal taxa (Fungal sp. 1 and Fungal sp. 2), followed by Talaromyces rubicundus and Dactylonectria anthuriicola. In general, they displayed high diversity, richness and moderate dominance. Sequences representing saprophytic, pathogenic and symbiotic fungi were detected, including the phytopathogenic fungus D. anthuriicola that was abundant, in the relatively young Soto Lake on Deception Island. The lake sediments studied contained the DNA of rich, diverse and complex fungal communities, including both fungi commonly reported in Antarctica and other taxa considered to be rare. However, as the study was based on the use of environmental DNA, which does not unequivocally confirm the presence of active or viable organisms, further studies using other approaches such as shotgun sequencing are required to elucidate the ecology of fungi in these Antarctic lake sediments.
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Rosa LH, Ogaki MB, Lirio JM, Vieira R, Coria SH, Pinto OHB, Carvalho-Silva M, Convey P, Rosa CA, Câmara PEAS. Fungal diversity in a sediment core from climate change impacted Boeckella Lake, Hope Bay, north-eastern Antarctic Peninsula assessed using metabarcoding. Extremophiles 2022; 26:16. [PMID: 35499659 DOI: 10.1007/s00792-022-01264-1] [Citation(s) in RCA: 12] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/28/2022] [Accepted: 04/05/2022] [Indexed: 01/04/2023]
Abstract
We studied the fungal DNA present in a lake sediment core obtained from Trinity Peninsula, Hope Bay, north-eastern Antarctic Peninsula, using metabarcoding through high-throughput sequencing (HTS). Sequences obtained were assigned to 146 amplicon sequence variants (ASVs) primarily representing unknown fungi, followed by the phyla Ascomycota, Rozellomycota, Basidiomycota, Chytridiomycota and Mortierellomycota. The most abundant taxa were assigned to Fungal sp., Pseudeurotium hygrophilum, Rozellomycota sp. 1, Pseudeurotiaceae sp. 1 and Chytridiomycota sp. 1. The majority of the DNA reads, representing 40 ASVs, could only be assigned at higher taxonomic levels and may represent taxa not currently included in the sequence databases consulted and/or be previously undescribed fungi. Different sections of the core were characterized by high sequence diversity, richness and moderate ecological dominance indices. The assigned diversity was dominated by cosmopolitan cold-adapted fungi, including known saprotrophic, plant and animal pathogenic and symbiotic taxa. Despite the overall dominance of Ascomycota and Basidiomycota and psychrophilic Mortierellomycota, members of the cryptic phyla Rozellomycota and Chytridiomycota were also detected in abundance. As Boeckella Lake may cease to exist in approaching decades due the effects of local climatic changes, it also an important location for the study of the impacts of these changes on Antarctic microbial diversity.
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Affiliation(s)
- Luiz Henrique Rosa
- Laboratório de Microbiologia Polar e Conexões Tropicais, Departamento de Microbiologia, Instituto de Ciências Biológicas, Universidade Federal de Minas Gerais, PO Box 486, Belo Horizonte, MG, 31270-901, Brazil.
| | - Mayara Baptistucci Ogaki
- Laboratório de Microbiologia Polar e Conexões Tropicais, Departamento de Microbiologia, Instituto de Ciências Biológicas, Universidade Federal de Minas Gerais, PO Box 486, Belo Horizonte, MG, 31270-901, Brazil
| | | | - Rosemary Vieira
- Instituto de Geociências, Universidade Federal Fluminense, Niterói, RJ, Brazil
| | | | | | | | - Peter Convey
- British Antarctic Survey, NERC, High Cross, Madingley Road, Cambridge, CB3 0ET, UK.,Department of Zoology, University of Johannesburg, PO Box 524, Auckland Park, 2006, South Africa
| | - Carlos Augusto Rosa
- Laboratório de Microbiologia Polar e Conexões Tropicais, Departamento de Microbiologia, Instituto de Ciências Biológicas, Universidade Federal de Minas Gerais, PO Box 486, Belo Horizonte, MG, 31270-901, Brazil
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18
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de Menezes GCA, Câmara PEAS, Pinto OHB, Convey P, Carvalho-Silva M, Simões JC, Rosa CA, Rosa LH. Fungi in the Antarctic Cryosphere: Using DNA Metabarcoding to Reveal Fungal Diversity in Glacial Ice from the Antarctic Peninsula Region. MICROBIAL ECOLOGY 2022; 83:647-657. [PMID: 34228196 DOI: 10.1007/s00248-021-01792-x] [Citation(s) in RCA: 5] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/06/2021] [Accepted: 06/09/2021] [Indexed: 06/13/2023]
Abstract
We assessed fungal diversity present in glacial from the Antarctic Peninsula using DNA metabarcoding through high-throughput sequencing (HTS). We detected a total of 353,879 fungal DNA reads, representing 94 genera and 184 taxa, in glacial ice fragments obtained from seven sites in the north-west Antarctic Peninsula and South Shetland Islands. The phylum Ascomycota dominated the sequence diversity, followed by Basidiomycota and Mortierellomycota. Penicillium sp., Cladosporium sp., Penicillium atrovenetum, Epicoccum nigrum, Pseudogymnoascus sp. 1, Pseudogymnoascus sp. 2, Phaeosphaeriaceae sp. and Xylaria grammica were the most dominant taxa, respectively. However, the majority of the fungal diversity comprised taxa of rare and intermediate relative abundance, predominately known mesophilic fungi. High indices of diversity and richness were calculated, along with moderate index of dominance, which varied among the different sampling sites. Only 26 (14%) of the total fungal taxa detected were present at all sampling sites. The identified diversity was dominated by saprophytic taxa, followed by known plant and animal pathogens and a low number of symbiotic fungi. Our data suggest that Antarctic glacial ice may represent a hotspot of previously unreported fungal diversity; however, further studies are required to integrate HTS and culture approaches to confirm viability of the taxa detected.
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Affiliation(s)
- Graciéle Cunha Alves de Menezes
- Departamento de Microbiologia, Instituto de Ciências Biológicas, Universidade Federal de Minas Gerais, Belo Horizonte, MG, , CEP 31270-901, Brazil
| | | | | | - Peter Convey
- British Antarctic Survey, NERC, High Cross, Madingley Road, Cambridge, CB3 0ET, UK
- Department of Zoology , University of Johannesburg , Johannesburg, South Africa
| | | | - Jefferson Cardia Simões
- Centro Polar E Climático, Universidade Federal Do Rio Grande Do Sul, Porto Alegre, Rio Grande do Sul, Brazil
| | - Carlos Augusto Rosa
- Departamento de Microbiologia, Instituto de Ciências Biológicas, Universidade Federal de Minas Gerais, Belo Horizonte, MG, , CEP 31270-901, Brazil
| | - Luiz Henrique Rosa
- Departamento de Microbiologia, Instituto de Ciências Biológicas, Universidade Federal de Minas Gerais, Belo Horizonte, MG, , CEP 31270-901, Brazil.
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19
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Production and Chemical Characterization of Exopolysaccharides by Antarctic Yeasts Vishniacozyma victoriae and Tremellomycetes sp. APPLIED SCIENCES-BASEL 2022. [DOI: 10.3390/app12041805] [Citation(s) in RCA: 10] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
Abstract
The study aimed to investigate exopolysaccharides (EPSs) produced by two Antarctic yeasts isolated from Livingston Island. The species were identified as Vishniacozyma victoriae (V) and Tremellomycetes sp. (T) based on a molecular genetic analysis of ITS1-5.8S-ITS4 regions of the 18S rRNA gene. The EPS production was investigated under stress conditions in culture flasks and a bioreactor. Different chromatographic (HPLC-RID, HPSEC-RID) and spectral (FT-IR) analyses were employed to characterize EPSs. Tremellomycetes sp. accumulated 7 g/L biomass and 4.5 g/L EPS after 120 h of cultivation. The total carbohydrate content of V-EPS and T-EPS was 75.4% and 79.0%, respectively. The EPSs mainly consisted of mannose (30–32%), which was followed by glucose, xylose, galactose, and small amounts of uronic acids (6.3–7.0%). EPSs had appreciable amounts of proteins (11–12%). The FT-IR spectra contained absorption bands typical for hetero-mannans and β-glucans (797–1033 cm−1). EPSs were heterogeneous with a broad molecular weight distribution range (47 × 104–68 × 104 g/mol). In conclusion, both yeasts synthesized high-molecular-weight heteromannans, and Tremellomycetes sp. stood out as being a better producer than V. victoriae. The current study also formed a basis for a better assessment of the potential for practical application of EPSs and yeasts in biochemical engineering and biotechnology.
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LIMA IGORG, BISPO JAMESR, AGOSTINHO ADSONY, QUEIROZ ALINECDE, MOREIRA MAGNASUZANAA, PASSARINI MICHELRODRIGOZ, OLIVEIRA VALÉRIAMDE, SETTE LARAD, ROSA LUIZHENRIQUE, DUARTE ALYSSONWAGNERF. Antarctic environments as a source of bacterial and fungal therapeutic enzymes. AN ACAD BRAS CIENC 2022; 94:e20210452. [DOI: 10.1590/0001-3765202220210452] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/25/2021] [Accepted: 08/20/2021] [Indexed: 11/21/2022] Open
Affiliation(s)
| | | | | | | | | | | | | | - LARA D. SETTE
- Universidade Estadual Paulista Júlio de Mesquita Filho, Brazil
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21
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da Silva TH, Câmara PEAS, Pinto OHB, Carvalho-Silva M, Oliveira FS, Convey P, Rosa CA, Rosa LH. Diversity of Fungi Present in Permafrost in the South Shetland Islands, Maritime Antarctic. MICROBIAL ECOLOGY 2022; 83:58-67. [PMID: 33733305 DOI: 10.1007/s00248-021-01735-6] [Citation(s) in RCA: 10] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/07/2021] [Accepted: 03/10/2021] [Indexed: 05/06/2023]
Abstract
We assess the fungal diversity present in permafrost from different islands in the South Shetland Islands archipelago, maritime Antarctic, using next-generation sequencing (NGS). We detected 1,003,637 fungal DNA reads representing, in rank abundance order, the phyla Ascomycota, Mortierellomycota, Basidiomycota, Chytridiomycota, Rozellomycota, Mucoromycota, Calcarisporiellomycota and Zoopagomycota. Ten taxa were dominant these being, in order of abundance, Pseudogymnoascus appendiculatus, Penicillium sp., Pseudogymnoascus roseus, Penicillium herquei, Curvularia lunata, Leotiomycetes sp., Mortierella sp. 1, Mortierella fimbricystis, Fungal sp. 1 and Fungal sp. 2. A further 38 taxa had intermediate abundance and 345 were classified as rare. The total fungal community detected in the permafrost showed high indices of diversity, richness and dominance, although these varied between the sampling locations. The use of a metabarcoding approach revealed the presence of DNA of a complex fungal assemblage in the permafrost of the South Shetland Islands including taxa with a range of ecological functions among which were multiple animal, human and plant pathogenic fungi. Further studies are required to determine whether the taxa identified are present in the form of viable cells or propagules and which might be released from melting permafrost to other Antarctic habitats and potentially dispersed more widely.
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Affiliation(s)
- Thamar Holanda da Silva
- Laboratório de Microbiologia Polar e Conexões Tropicais, Departamento de Microbiologia, Instituto de Ciências Biológicas, Universidade Federal de Minas Gerais, P. O. Box 486, Belo Horizonte, MG, CEP 31270-901, Brazil
| | | | | | | | - Fábio Soares Oliveira
- Departamento de Geografia, Universidade Federal de Minas Gerais, Belo Horizonte, Brazil
| | - Peter Convey
- British Antarctic Survey, NERC, High Cross, Madingley Road, Cambridge, CB3 0ET, UK
| | - Carlos Augusto Rosa
- Laboratório de Microbiologia Polar e Conexões Tropicais, Departamento de Microbiologia, Instituto de Ciências Biológicas, Universidade Federal de Minas Gerais, P. O. Box 486, Belo Horizonte, MG, CEP 31270-901, Brazil
| | - Luiz Henrique Rosa
- Laboratório de Microbiologia Polar e Conexões Tropicais, Departamento de Microbiologia, Instituto de Ciências Biológicas, Universidade Federal de Minas Gerais, P. O. Box 486, Belo Horizonte, MG, CEP 31270-901, Brazil.
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KITA DANIELAM, GIOVANELLA PATRICIA, YOSHINAGA THAÍST, PELLIZZER ELISAP, SETTE LARAD. Antarctic fungi applied to textile dye bioremediation. AN ACAD BRAS CIENC 2022; 94:e20210234. [DOI: 10.1590/0001-3765202220210234] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/14/2021] [Accepted: 07/13/2021] [Indexed: 11/21/2022] Open
Affiliation(s)
- DANIELA M. KITA
- Universidade Estadual Paulista Júlio de Mesquita Filho (UNESP), Brazil
| | - PATRICIA GIOVANELLA
- Universidade Estadual Paulista Júlio de Mesquita Filho (UNESP), Brazil; Universidade Estadual Paulista Júlio de Mesquita Filho (UNESP), Brazil
| | | | | | - LARA D. SETTE
- Universidade Estadual Paulista Júlio de Mesquita Filho (UNESP), Brazil; Universidade Estadual Paulista Júlio de Mesquita Filho (UNESP), Brazil
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23
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MENEZES GRACIÉLECDE, PORTO BÁRBARAA, RADICCHI GERUSAA, SOARES FERNANDAC, ZARANKIN ANDRÉS, ROSA LUIZH. Fungal impact on archaeological materials collected at Byers Peninsula Livingston Island, South Shetland Islands, Antarctica. AN ACAD BRAS CIENC 2022; 94:e20210218. [DOI: 10.1590/0001-3765202220210218] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/11/2021] [Accepted: 07/27/2021] [Indexed: 11/22/2022] Open
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Villanueva P, Vásquez G, Gil-Durán C, Oliva V, Díaz A, Henríquez M, Álvarez E, Laich F, Chávez R, Vaca I. Description of the First Four Species of the Genus Pseudogymnoascus From Antarctica. Front Microbiol 2021; 12:713189. [PMID: 34867840 PMCID: PMC8640180 DOI: 10.3389/fmicb.2021.713189] [Citation(s) in RCA: 16] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/22/2021] [Accepted: 10/18/2021] [Indexed: 12/03/2022] Open
Abstract
The genus Pseudogymnoascus represents a diverse group of fungi widely distributed in different cold regions on Earth. Our current knowledge of the species of Pseudogymnoascus is still very limited. Currently, there are only 15 accepted species of Pseudogymnoascus that have been isolated from different environments in the Northern Hemisphere. In contrast, species of Pseudogymnoascus from the Southern Hemisphere have not yet been described. In this work, we characterized four fungal strains obtained from Antarctic marine sponges. Based on multilocus phylogenetic analyses and morphological characterizations we determined that these strains are new species, for which the names Pseudogymnoascus antarcticus sp. nov., Pseudogymnoascus australis sp. nov., Pseudogymnoascus griseus sp. nov., and Pseudogymnoascus lanuginosus sp. nov. are proposed. Phylogenetic analyses indicate that the new species form distinct lineages separated from other species of Pseudogymnoascus with strong support. The new species do not form sexual structures and differ from the currently known species mainly in the shape and size of their conidia, the presence of chains of arthroconidia, and the appearance of their colonies. This is the first report of new species of Pseudogymnoascus not only from Antarctica but also from the Southern Hemisphere.
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Affiliation(s)
- Pablo Villanueva
- Department of Chemistry, Faculty of Sciences, University of Chile, Santiago, Chile
| | - Ghislaine Vásquez
- Department of Chemistry, Faculty of Sciences, University of Chile, Santiago, Chile
| | - Carlos Gil-Durán
- Department of Chemistry, Faculty of Sciences, University of Chile, Santiago, Chile
| | - Vicente Oliva
- Department of Chemistry, Faculty of Sciences, University of Chile, Santiago, Chile
| | - Anaí Díaz
- Department of Chemistry, Faculty of Sciences, University of Chile, Santiago, Chile
| | - Marlene Henríquez
- Department of Chemistry, Faculty of Sciences, University of Chile, Santiago, Chile
| | - Eduardo Álvarez
- Institute of Biomedical Sciences (ICBM), Mycology Unit, Faculty of Medicine, University of Chile, Santiago, Chile
| | - Federico Laich
- Departamento de Protección Vegetal, Instituto Canario de Investigaciones Agrarias, Santa Cruz de Tenerife, Islas Canarias, Spain
| | - Renato Chávez
- Departamento de Biología, Facultad de Química y Biología, Universidad de Santiago de Chile (USACH), Santiago, Chile
| | - Inmaculada Vaca
- Department of Chemistry, Faculty of Sciences, University of Chile, Santiago, Chile
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Tanney JB, Quijada L. Comments on the occurrence of yeast-like morphologies in Leotiomycetes. Int J Syst Evol Microbiol 2021; 71. [PMID: 34818146 DOI: 10.1099/ijsem.0.005141] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/18/2022] Open
Affiliation(s)
- Joey B Tanney
- Pacific Forestry Centre, Canadian Forest Service, Natural Resources Canada, 506 Burnside Road, Victoria, British Columbia, V8Z 1M5, Canada
| | - Luis Quijada
- Department of Organismic and Evolutionary Biology & The Farlow Reference Library and Herbarium of Cryptogamic Botany, Harvard University, 20 Divinity Avenue, Cambridge, MA 02138, USA
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Samarasinghe H, Lu Y, Aljohani R, Al-Amad A, Yoell H, Xu J. Global patterns in culturable soil yeast diversity. iScience 2021; 24:103098. [PMID: 34622153 PMCID: PMC8479693 DOI: 10.1016/j.isci.2021.103098] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/13/2021] [Revised: 08/09/2021] [Accepted: 09/02/2021] [Indexed: 11/16/2022] Open
Abstract
Yeasts, broadly defined as unicellular fungi, fulfill essential roles in soil ecosystems as decomposers and nutrition sources for fellow soil-dwellers. Broad-scale investigations of soil yeasts pose a methodological challenge as metagenomics are of limited use for identifying this group of fungi. Here we characterize global soil yeast diversity using fungal DNA barcoding on 1473 yeasts cultured from 3826 soil samples obtained from nine countries in six continents. We identify mean annual precipitation and international air travel as two significant correlates with soil yeast community structure and composition worldwide. Evidence for anthropogenic influences on soil yeast communities, directly via travel and indirectly via altered rainfall patterns resulting from climate change, is concerning as we found common infectious yeasts frequently distributed in soil in several countries. Our discovery of 41 putative novel species highlights the continued need for culture-based studies to advance our knowledge of environmental yeast diversity. Mean annual rainfall is a positive predictor of global soil yeast diversity International travel predicts number of shared yeast species between countries 41 novel yeast species were discovered from soils in eight countries Continued culture-based studies are needed to investigate soil yeast populations
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Affiliation(s)
| | - Yi Lu
- Department of Biology, McMaster University, Hamilton, ON, Canada
| | - Renad Aljohani
- Department of Biology, McMaster University, Hamilton, ON, Canada.,Department of Infectious Diseases, South Kensington Campus, Imperial College London, London, UK
| | - Ahmad Al-Amad
- Department of Biology, McMaster University, Hamilton, ON, Canada
| | - Heather Yoell
- Department of Biology, McMaster University, Hamilton, ON, Canada
| | - Jianping Xu
- Department of Biology, McMaster University, Hamilton, ON, Canada
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Varrella S, Barone G, Tangherlini M, Rastelli E, Dell’Anno A, Corinaldesi C. Diversity, Ecological Role and Biotechnological Potential of Antarctic Marine Fungi. J Fungi (Basel) 2021; 7:391. [PMID: 34067750 PMCID: PMC8157204 DOI: 10.3390/jof7050391] [Citation(s) in RCA: 17] [Impact Index Per Article: 5.7] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/20/2021] [Revised: 05/07/2021] [Accepted: 05/13/2021] [Indexed: 11/28/2022] Open
Abstract
The Antarctic Ocean is one of the most remote and inaccessible environments on our planet and hosts potentially high biodiversity, being largely unexplored and undescribed. Fungi have key functions and unique physiological and morphological adaptations even in extreme conditions, from shallow habitats to deep-sea sediments. Here, we summarized information on diversity, the ecological role, and biotechnological potential of marine fungi in the coldest biome on Earth. This review also discloses the importance of boosting research on Antarctic fungi as hidden treasures of biodiversity and bioactive molecules to better understand their role in marine ecosystem functioning and their applications in different biotechnological fields.
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Affiliation(s)
- Stefano Varrella
- Department of Materials, Environmental Sciences and Urban Planning, Polytechnic University of Marche, Via Brecce Bianche, 60131 Ancona, Italy
| | - Giulio Barone
- Institute for Biological Resources and Marine Biotechnologies, National Research Council (IRBIM-CNR), Largo Fiera della Pesca, 60125 Ancona, Italy;
| | - Michael Tangherlini
- Department of Research Infrastructures for Marine Biological Resources, Stazione Zoologica “Anton Dohrn”, Fano Marine Centre, Viale Adriatico 1-N, 61032 Fano, Italy;
| | - Eugenio Rastelli
- Department of Marine Biotechnology, Stazione Zoologica “Anton Dohrn”, Fano Marine Centre, Viale Adriatico 1-N, 61032 Fano, Italy;
| | - Antonio Dell’Anno
- Department of Life and Environmental Sciences, Polytechnic University of Marche, Via Brecce Bianche, 60131 Ancona, Italy;
| | - Cinzia Corinaldesi
- Department of Materials, Environmental Sciences and Urban Planning, Polytechnic University of Marche, Via Brecce Bianche, 60131 Ancona, Italy
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Vujanovic V. Tremellomycetes Yeasts in Kernel Ecological Niche: Early Indicators of Enhanced Competitiveness of Endophytic and Mycoparasitic Symbionts against Wheat Pathobiota. PLANTS 2021; 10:plants10050905. [PMID: 33946244 PMCID: PMC8145979 DOI: 10.3390/plants10050905] [Citation(s) in RCA: 13] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 03/21/2021] [Revised: 04/26/2021] [Accepted: 04/28/2021] [Indexed: 01/06/2023]
Abstract
Tremellomycetes rDNA sequences previously detected in wheat kernels by MiSeq were not reliably assigned to a genus or clade. From comparisons of ribosomal internal transcribed spacer region (ITS) and subsequent phylogenetic analyses, the following three basidiomycetous yeasts were resolved and identified: Vishniacozymavictoriae, V. tephrensis, and an undescribed Vishniacozyma rDNA variant. The Vishniacozyma variant’s clade is evolutionarily close to, but phylogenetically distinct from, the V. carnescens clade. These three yeasts were discovered in wheat kernel samples from the Canadian prairies. Variations in relative Vishniacozyma species abundances coincided with altered wheat kernel weight, as well as host resistance to chemibiotrophic Tilletia (Common bunt—CB) and necrotrophic Fusarium (Fusarium head blight—FHB) pathogens. Wheat kernel weight was influenced by the coexistence of Vishniacozyma with endophytic plant growth-promoting and mycoparasitic biocontrol fungi that were acquired by plants. Kernels were coated with beneficial Penicillium endophyte and Sphaerodes mycoparasite, each of which had different influences on the wild yeast population. Its integral role in the kernel microbiome renders Vishniacozyma a measurable indicator of the microbiome–plant interaction. The ability of NGS technology to detect specific endophytic DNA variants and early changes in dynamics among symbionts within the kernel ecological niche enables the prediction of crop disease emergence, suggesting that advanced microbiological testing may be a potentially useful tool for both phytoprotection and more efficient wheat breeding programs.
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Affiliation(s)
- Vladimir Vujanovic
- Department of Food and Bioproduct Sciences, University of Saskatchewan, 51 Campus Drive, Saskatoon, SK S7N 5A8, Canada
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29
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Diversity of fungal DNA in lake sediments on Vega Island, north-east Antarctic Peninsula assessed using DNA metabarcoding. Extremophiles 2021; 25:257-265. [PMID: 33837855 DOI: 10.1007/s00792-021-01226-z] [Citation(s) in RCA: 7] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/08/2020] [Accepted: 03/19/2021] [Indexed: 12/11/2022]
Abstract
We assessed the diversity of fungal DNA present in sediments of three lakes on Vega Island, north-east Antarctic Peninsula using metabarcoding through high-throughput sequencing (HTS). A total of 640,902 fungal DNA reads were detected, which were assigned to 224 taxa of the phyla Ascomycota, Rozellomycota, Basidiomycota, Chytridiomycota and Mortierellomycota, in rank order of abundance. The most abundant genera were Pseudogymnoascus, Penicillium and Mortierella. However, a majority (423,508, 66%) of the reads, representing by 43 ASVs, could only be assigned at higher taxonomic levels and may represent taxa not currently included in the sequence databases used or be new or previously unreported taxa present in Antarctic lakes. The three lakes were characterized by high sequence diversity, richness, and moderate dominance indices. The ASVs were dominated by psychrotolerant and cosmopolitan cold-adapted Ascomycota, Basidiomycota and Mortierellomycota commonly reported in Antarctic environments. However, other taxa detected included unidentified members of Rozellomycota and Chytridiomycota species not previously reported in Antarctic lakes. The assigned diversity was composed mainly of taxa recognized as decomposers and pathogens of plants and invertebrates.
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Rock Surface Fungi in Deep Continental Biosphere-Exploration of Microbial Community Formation with Subsurface In Situ Biofilm Trap. Microorganisms 2020; 9:microorganisms9010064. [PMID: 33383728 PMCID: PMC7824546 DOI: 10.3390/microorganisms9010064] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/18/2020] [Revised: 12/21/2020] [Accepted: 12/22/2020] [Indexed: 01/16/2023] Open
Abstract
Fungi have an important role in nutrient cycling in most ecosystems on Earth, yet their ecology and functionality in deep continental subsurface remain unknown. Here, we report the first observations of active fungal colonization of mica schist in the deep continental biosphere and the ability of deep subsurface fungi to attach to rock surfaces under in situ conditions in groundwater at 500 and 967 m depth in Precambrian bedrock. We present an in situ subsurface biofilm trap, designed to reveal sessile microbial communities on rock surface in deep continental groundwater, using Outokumpu Deep Drill Hole, in eastern Finland, as a test site. The observed fungal phyla in Outokumpu subsurface were Basidiomycota, Ascomycota, and Mortierellomycota. In addition, significant proportion of the community represented unclassified Fungi. Sessile fungal communities on mica schist surfaces differed from the planktic fungal communities. The main bacterial phyla were Firmicutes, Proteobacteria, and Actinobacteriota. Biofilm formation on rock surfaces is a slow process and our results indicate that fungal and bacterial communities dominate the early surface attachment process, when pristine mineral surfaces are exposed to deep subsurface ecosystems. Various fungi showed statistically significant cross-kingdom correlation with both thiosulfate and sulfate reducing bacteria, e.g., SRB2 with fungi Debaryomyces hansenii.
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Gorshkov V, Osipova E, Ponomareva M, Ponomarev S, Gogoleva N, Petrova O, Gogoleva O, Meshcherov A, Balkin A, Vetchinkina E, Potapov K, Gogolev Y, Korzun V. Rye Snow Mold-Associated Microdochium nivale Strains Inhabiting a Common Area: Variability in Genetics, Morphotype, Extracellular Enzymatic Activities, and Virulence. J Fungi (Basel) 2020; 6:E335. [PMID: 33287447 PMCID: PMC7761817 DOI: 10.3390/jof6040335] [Citation(s) in RCA: 9] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/13/2020] [Revised: 11/29/2020] [Accepted: 11/30/2020] [Indexed: 12/16/2022] Open
Abstract
Snow mold is a severe plant disease caused by psychrophilic or psychrotolerant fungi, of which Microdochium species are the most harmful. A clear understanding of Microdochium biology has many gaps; the pathocomplex and its dynamic are poorly characterized, virulence factors are unknown, genome sequences are not available, and the criteria of plant snow mold resistance are not elucidated. Our study aimed to identify comprehensive characteristics of a local community of snow mold-causing Microdochium species colonizing a particular crop culture. By using the next-generation sequencing (NGS) technique, we characterized fungal and bacterial communities of pink snow mold-affected winter rye (Secale cereale) plants within a given geographical location shortly after snowmelt. Twenty-one strains of M. nivale were isolated, classified on the basis of internal transcribed spacer 2 (ITS2) region, and characterized by morphology, synthesis of extracellular enzymes, and virulence. Several types of extracellular enzymatic activities, the level of which had no correlations with the degree of virulence, were revealed for Microdochium species for the first time. Our study shows that genetically and phenotypically diverse M. nivale strains simultaneously colonize winter rye plants within a common area, and each strain is likely to utilize its own, unique strategy to cause the disease using "a personal" pattern of extracellular enzymes.
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Affiliation(s)
- Vladimir Gorshkov
- Laboratory of Plant Infectious Diseases, FRC Kazan Scientific Center of RAS, ul. Lobachevskogo, 2/31, 420111 Kazan, Russia; (E.O.); (M.P.); (S.P.); (N.G.); (O.P.); (O.G.); (A.M.); (A.B.); (K.P.); (Y.G.); (V.K.)
| | - Elena Osipova
- Laboratory of Plant Infectious Diseases, FRC Kazan Scientific Center of RAS, ul. Lobachevskogo, 2/31, 420111 Kazan, Russia; (E.O.); (M.P.); (S.P.); (N.G.); (O.P.); (O.G.); (A.M.); (A.B.); (K.P.); (Y.G.); (V.K.)
| | - Mira Ponomareva
- Laboratory of Plant Infectious Diseases, FRC Kazan Scientific Center of RAS, ul. Lobachevskogo, 2/31, 420111 Kazan, Russia; (E.O.); (M.P.); (S.P.); (N.G.); (O.P.); (O.G.); (A.M.); (A.B.); (K.P.); (Y.G.); (V.K.)
| | - Sergey Ponomarev
- Laboratory of Plant Infectious Diseases, FRC Kazan Scientific Center of RAS, ul. Lobachevskogo, 2/31, 420111 Kazan, Russia; (E.O.); (M.P.); (S.P.); (N.G.); (O.P.); (O.G.); (A.M.); (A.B.); (K.P.); (Y.G.); (V.K.)
| | - Natalia Gogoleva
- Laboratory of Plant Infectious Diseases, FRC Kazan Scientific Center of RAS, ul. Lobachevskogo, 2/31, 420111 Kazan, Russia; (E.O.); (M.P.); (S.P.); (N.G.); (O.P.); (O.G.); (A.M.); (A.B.); (K.P.); (Y.G.); (V.K.)
| | - Olga Petrova
- Laboratory of Plant Infectious Diseases, FRC Kazan Scientific Center of RAS, ul. Lobachevskogo, 2/31, 420111 Kazan, Russia; (E.O.); (M.P.); (S.P.); (N.G.); (O.P.); (O.G.); (A.M.); (A.B.); (K.P.); (Y.G.); (V.K.)
| | - Olga Gogoleva
- Laboratory of Plant Infectious Diseases, FRC Kazan Scientific Center of RAS, ul. Lobachevskogo, 2/31, 420111 Kazan, Russia; (E.O.); (M.P.); (S.P.); (N.G.); (O.P.); (O.G.); (A.M.); (A.B.); (K.P.); (Y.G.); (V.K.)
| | - Azat Meshcherov
- Laboratory of Plant Infectious Diseases, FRC Kazan Scientific Center of RAS, ul. Lobachevskogo, 2/31, 420111 Kazan, Russia; (E.O.); (M.P.); (S.P.); (N.G.); (O.P.); (O.G.); (A.M.); (A.B.); (K.P.); (Y.G.); (V.K.)
| | - Alexander Balkin
- Laboratory of Plant Infectious Diseases, FRC Kazan Scientific Center of RAS, ul. Lobachevskogo, 2/31, 420111 Kazan, Russia; (E.O.); (M.P.); (S.P.); (N.G.); (O.P.); (O.G.); (A.M.); (A.B.); (K.P.); (Y.G.); (V.K.)
| | - Elena Vetchinkina
- Institute of Biochemistry and Physiology of Plants and Microorganisms, Russian Academy of Sciences (IBPPM RAS), 13 Prospekt Entuziastov, 410049 Saratov, Russia;
| | - Kim Potapov
- Laboratory of Plant Infectious Diseases, FRC Kazan Scientific Center of RAS, ul. Lobachevskogo, 2/31, 420111 Kazan, Russia; (E.O.); (M.P.); (S.P.); (N.G.); (O.P.); (O.G.); (A.M.); (A.B.); (K.P.); (Y.G.); (V.K.)
| | - Yuri Gogolev
- Laboratory of Plant Infectious Diseases, FRC Kazan Scientific Center of RAS, ul. Lobachevskogo, 2/31, 420111 Kazan, Russia; (E.O.); (M.P.); (S.P.); (N.G.); (O.P.); (O.G.); (A.M.); (A.B.); (K.P.); (Y.G.); (V.K.)
| | - Viktor Korzun
- Laboratory of Plant Infectious Diseases, FRC Kazan Scientific Center of RAS, ul. Lobachevskogo, 2/31, 420111 Kazan, Russia; (E.O.); (M.P.); (S.P.); (N.G.); (O.P.); (O.G.); (A.M.); (A.B.); (K.P.); (Y.G.); (V.K.)
- KWS SAAT SE & Co. KGaA, Grimsehlstr. 31, 37555 Einbeck, Germany
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Fungal Community in Antarctic Soil Along the Retreating Collins Glacier (Fildes Peninsula, King George Island). Microorganisms 2020; 8:microorganisms8081145. [PMID: 32751125 PMCID: PMC7465374 DOI: 10.3390/microorganisms8081145] [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: 07/02/2020] [Revised: 07/23/2020] [Accepted: 07/28/2020] [Indexed: 01/17/2023] Open
Abstract
Glacial retreat is one of the most conspicuous signs of warming in Antarctic regions. Glacier soils harbor an active microbial community of decomposers, and under the continuous retraction of glaciers, the soil starts to present a gradient of physical, chemical, and biological factors reflecting regional changes over time. Little is known about the biological nature of fungi in Antarctic glacier soils. In this sense, this work aimed at studying the behavior of fungal community structure from samples of glacier soil collected after glacial retreat (Collins Glacier). A total of 309 fungi distributed in 19 genera were obtained from eleven soil samples. Representatives of the genera Pseudogymnoascus (Ascomycota) and Mortierella (Mortierellomycota) were the most abundant isolates in all samples. The data revealed the presence of filamentous fungi belonging to the phylum Basidiomycota, rarely found in Antarctica. Analysis of the generalized linear models revealed that the distance from the glacier as well as phosphorus and clay were able to modify the distribution of fungal species. Environmental variations proved to have influenced the genera Pseudogymnoascus and Pseudeutorium.
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Cultivable fungi associated with bryosphere of bipolar mosses Polytrichastrum alpinum and Polytrichum juniperinum in King George Island, South Shetland Islands, Maritime Antarctica. Polar Biol 2020. [DOI: 10.1007/s00300-020-02658-7] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/30/2022]
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