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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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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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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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Nardo VG, Otero IVR, Giovanella P, Santos JAD, Pellizzer EP, Dovigo DR, Paes ECP, Sette LD. Biobank of fungi from marine and terrestrial Antarctic environments. AN ACAD BRAS CIENC 2023; 95:e20230603. [PMID: 38126380 DOI: 10.1590/0001-3765202320230603] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/31/2023] [Accepted: 11/24/2023] [Indexed: 12/23/2023] Open
Abstract
Harsh and extreme environments, such as Antarctica, offer unique opportunities to explore new microbial taxa and biomolecules. Given the limited knowledge on microbial diversity, this study aimed to compile, analyze and compare a subset of the biobank of Antarctic fungi maintained at the UNESP's Central of Microbial Resources (CRM-UNESP). A total of 711 isolates (240 yeasts and 471 filamentous fungi) from marine and terrestrial samples collected at King George Island (South Shetland Islands, Antarctica) were used with the primary objective of investigating their presence in both marine and terrestrial environments. Among the yeasts, 13 genera were found, predominantly belonging to the phylum Basidiomycota. Among the filamentous fungi, 34 genera were represented, predominantly from the phylum Ascomycota. The most abundant genera in the marine samples were Metschnikowia, Mrakia, and Pseudogymnoascus, while in the terrestrial samples, they were Pseudogymnoascus, Leucosporidium, and Mortierella. Most of the genera and species of the CRM-UNESP biobank of Antarctic fungi are being reported as an important target for biotechnological applications. This study showed the relevance of the CRM-UNESP biobank, highlighting the importance of applying standard methods for the preservation of the biological material and associated data (BMaD), as recommended in national and international standards.
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Affiliation(s)
- Victor G Nardo
- Universidade Estadual Paulista (UNESP), Instituto de Biociências, Departamento de Biologia Geral e Aplicada, Av. 24A, 1515, 13506-900 Rio Claro, SP, Brazil
| | - Igor V R Otero
- Universidade Estadual Paulista (UNESP), Instituto de Biociências, Departamento de Biologia Geral e Aplicada, Av. 24A, 1515, 13506-900 Rio Claro, SP, Brazil
| | - Patricia Giovanella
- Universidade Estadual Paulista (UNESP), Instituto de Biociências, Departamento de Biologia Geral e Aplicada, Av. 24A, 1515, 13506-900 Rio Claro, SP, Brazil
- Universidade Estadual Paulista (UNESP), Centro de Estudos Ambientais, Av. 24A, 1515, 13506-900 Rio Claro, SP, Brazil
| | - Juliana Aparecida Dos Santos
- Universidade do Vale do Sapucaí (Univás), Av. Prefeito Tuany Toledo, 470, Fatima, 37550-000 Pouso Alegre, MG, Brazil
| | - Elisa P Pellizzer
- Universidade Estadual Paulista (UNESP), Instituto de Biociências, Departamento de Biologia Geral e Aplicada, Av. 24A, 1515, 13506-900 Rio Claro, SP, Brazil
| | - Daniel R Dovigo
- Universidade Estadual Paulista (UNESP), Instituto de Biociências, Departamento de Biologia Geral e Aplicada, Av. 24A, 1515, 13506-900 Rio Claro, SP, Brazil
| | - Eduardo C P Paes
- Universidade Estadual Paulista (UNESP), Instituto de Biociências, Departamento de Biologia Geral e Aplicada, Av. 24A, 1515, 13506-900 Rio Claro, SP, Brazil
| | - Lara D Sette
- Universidade Estadual Paulista (UNESP), Instituto de Biociências, Departamento de Biologia Geral e Aplicada, Av. 24A, 1515, 13506-900 Rio Claro, SP, Brazil
- Universidade Estadual Paulista (UNESP), Centro de Estudos Ambientais, Av. 24A, 1515, 13506-900 Rio Claro, SP, Brazil
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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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Ortiz-Rivero J, Garrido-Benavent I, Heiðmarsson S, de los Ríos A. Moss and Liverwort Covers Structure Soil Bacterial and Fungal Communities Differently in the Icelandic Highlands. MICROBIAL ECOLOGY 2023; 86:1893-1908. [PMID: 36802019 PMCID: PMC10497656 DOI: 10.1007/s00248-023-02194-x] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/14/2022] [Accepted: 02/09/2023] [Indexed: 06/18/2023]
Abstract
Cryptogamic covers extend over vast polar tundra regions and their main components, e.g., bryophytes and lichens, are frequently the first visible colonizers of deglaciated areas. To understand their role in polar soil development, we analyzed how cryptogamic covers dominated by different bryophyte lineages (mosses and liverworts) influence the diversity and composition of edaphic bacterial and fungal communities as well as the abiotic attributes of underlying soils in the southern part of the Highlands of Iceland. For comparison, the same traits were examined in soils devoid of bryophyte covers. We measured an increase in soil C, N, and organic matter contents coupled with a lower pH in association with bryophyte cover establishment. However, liverwort covers showed noticeably higher C and N contents than moss covers. Significant changes in diversity and composition of bacterial and fungal communities were revealed between (a) bare and bryophyte-covered soils, (b) bryophyte covers and the underlying soils, and (c) moss and liverworts covers. These differences were more obvious for fungi than bacteria, and involved different lineages of saprotrophic and symbiotic fungi, which suggests a certain specificity of microbial taxa to particular bryophyte groups. In addition, differences observed in the spatial structure of the two bryophyte covers may be also responsible for the detected differences in microbial community diversity and composition. Altogether, our findings indicate that soil microbial communities and abiotic attributes are ultimately affected by the composition of the most conspicuous elements of cryptogamic covers in polar regions, which is of great value to predict the biotic responses of these ecosystems to future climate change.
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Affiliation(s)
- Javier Ortiz-Rivero
- Department of Biogeochemistry and Microbial Ecology, National Museum of Natural Sciences (MNCN-CSIC), C/ Serrano 115 dpdo, E-28045 Madrid, Spain
| | - Isaac Garrido-Benavent
- Departament de Botànica i Geologia, Fac. CC. Biològiques, Universitat de València, C/ Doctor Moliner 50, E-46100 Burjassot, Valencia Spain
| | - Starri Heiðmarsson
- Icelandic Institute of Natural History, Akureyri Division, Borgir Nordurslod, 600 Akureyri, Iceland
- Present address: Northwest Iceland Nature Research Centre, Aðalgötu 2, 550 Sauðárkrókur, Iceland
| | - Asunción de los Ríos
- Department of Biogeochemistry and Microbial Ecology, National Museum of Natural Sciences (MNCN-CSIC), C/ Serrano 115 dpdo, E-28045 Madrid, Spain
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Soil Fungal Diversity and Ecology Assessed Using DNA Metabarcoding along a Deglaciated Chronosequence at Clearwater Mesa, James Ross Island, Antarctic Peninsula. BIOLOGY 2023; 12:biology12020275. [PMID: 36829552 PMCID: PMC9953209 DOI: 10.3390/biology12020275] [Citation(s) in RCA: 3] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 12/23/2022] [Revised: 02/06/2023] [Accepted: 02/08/2023] [Indexed: 02/12/2023]
Abstract
We studied the fungal diversity present in soils sampled along a deglaciated chronosequence from para- to periglacial conditions on James Ross Island, north-east Antarctic Peninsula, using DNA metabarcoding. A total of 88 amplicon sequence variants (ASVs) were detected, dominated by the phyla Ascomycota, Basidiomycota and Mortierellomycota. The uncommon phyla Chytridiomycota, Rozellomycota, Monoblepharomycota, Zoopagomycota and Basidiobolomycota were detected. Unknown fungi identified at higher hierarchical taxonomic levels (Fungal sp. 1, Fungal sp. 2, Spizellomycetales sp. and Rozellomycotina sp.) and taxa identified at generic and specific levels (Mortierella sp., Pseudogymnoascus sp., Mortierella alpina, M. turficola, Neoascochyta paspali, Penicillium sp. and Betamyces sp.) dominated the assemblages. In general, the assemblages displayed high diversity and richness, and moderate dominance. Only 12 of the fungal ASVs were detected in all chronosequence soils sampled. Sequences representing saprophytic, pathogenic and symbiotic fungi were detected. Based on the sequence diversity obtained, Clearwater Mesa soils contain a complex fungal community, including the presence of fungal groups generally considered rare in Antarctica, with dominant taxa recognized as cold-adapted cosmopolitan, endemic, saprotrophic and phytopathogenic fungi. Clearwater Mesa ecosystems are impacted by the effects of regional climatic changes, and may provide a natural observatory to understand climate change effects over time.
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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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