Fungal diversity present on rocks from a polar desert in continental Antarctica assessed using DNA metabarcoding.

de Menezes, Graciéle Cunha Alves; Câmara, Paulo E.A.S.; Pinto, Otávio Henrique Bezerra; Carvalho-Silva, Micheline; Oliveira, Fábio Soares; Souza, Caroline Delpupo; Schaefer, Carlos Ernesto G. Reynaud; Convey, Peter ORCID: https://orcid.org/0000-0001-8497-9903; Rosa, Carlos Augusto; Rosa, Luiz Henrique. 2021 Fungal diversity present on rocks from a polar desert in continental Antarctica assessed using DNA metabarcoding. Extremophiles, 25 (2). 193-202. https://doi.org/10.1007/s00792-021-01221-4

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Abstract/Summary

We evaluated the fungal diversity associated with carbonate veins and two types of salt encrustation in rocks in a polar desert region of continental Antarctica using DNA a metabarcoding approach. We detected 262,268 reads grouped into 517 amplicon sequence variants (ASVs) assigned to the phyla Ascomycota, Basidiomycota, Mortierellomycota and Mucoromycota. Fourteen ASVs belonging to the genera Trichosporon, Mortierella, Penicillium, Aspergillus, Cladosporium, Coprinellus, Pleurotus and Pseudogymnoascus were assessed to be dominant taxa. The fungal communities of the three habitats sampled displayed high diversity indices when compared with other habitats of Antarctica, although differing in detail, with the highest diversity indices in the gypsum crust type 2. Only 48 of the 517 ASVs (9.28%) were detected in all three habitats, including dominant, intermediate and minor components. In contrast with previous studies of fungal communities living in the ultra-extreme conditions of continental Antarctica, application of metabarcoding revealed the DNA of a rich and complex resident fungal community. The ASVs detected included fungi with different ecological roles, with xerophilic, human- and animal-associated, phytopathogenic, saprotrophic, mutualistic, psychrotolerant and cosmopolitan taxa. This sequence diversity may be the result of deposition of fungal propagules over time driven by air currents, precipitation or human activities in the region.

Item Type:	Publication - Article
Digital Object Identifier (DOI):	https://doi.org/10.1007/s00792-021-01221-4
ISSN:	1431-0651
Additional Keywords:	Antarctica, ecology, environmental DNA, rock inhabiting fungi, taxonomy
Date made live:	08 Mar 2021 09:17 +0 (UTC)
URI:	https://nora.nerc.ac.uk/id/eprint/528755

Item Type:

Publication - Article

Digital Object Identifier (DOI):

https://doi.org/10.1007/s00792-021-01221-4

ISSN:

1431-0651

Additional Keywords:

Antarctica, ecology, environmental DNA, rock inhabiting fungi, taxonomy

Date made live:

08 Mar 2021 09:17 +0 (UTC)

URI:

https://nora.nerc.ac.uk/id/eprint/528755