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Article

Uncovered Microbial Diversity in Antarctic Cryptoendolithic Communities Sampling Three Representative Locations of the Victoria Land

1
Department of Ecological and Biological Sciences, University of Tuscia, 01100 Viterbo, Italy
2
Department of Microbiology and Plant Pathology, University of California, Riverside, Riverside, CA 92521, USA
3
Department of Agricultural, Food and Environmental Sciences, University of Perugia, 06121 Perugia, Italy
4
Italian National Antarctic Museum (MNA), Mycological Section, 16166 Genoa, Italy
*
Authors to whom correspondence should be addressed.
Microorganisms 2020, 8(6), 942; https://doi.org/10.3390/microorganisms8060942
Received: 3 June 2020 / Revised: 21 June 2020 / Accepted: 22 June 2020 / Published: 23 June 2020
The endolithic niche represents an ultimate refuge to microorganisms in the Mars-like environment of the Antarctic desert. In an era of rapid global change and desertification, the interest in these border ecosystems is increasing due to speculation on how they maintain balance and functionality at the dry limits of life. To assure a reliable estimation of microbial diversity, proper sampling must be planned in order to avoid the necessity of re-sampling as reaching these remote locations is risky and requires tremendous logistical and economical efforts. In this study, we seek to determine the minimum number of samples for uncovering comprehensive bacterial and fungal diversity, comparing communities in strict vicinity to each other. We selected three different locations of the Victoria Land (Continental Antarctica) at different altitudes and showing sandstone outcrops of a diverse nature and origin—Battleship promontory (834 m above sea level (a.s.l.), Southern VL), Trio Nunatak (1,470 m a.s.l., Northern VL) and Mt New Zealand (3,100 m a.s.l., Northern VL). Overall, we found that a wider sampling would be required to capture the whole amplitude of microbial diversity, particularly in Northern VL. We concluded that the inhomogeneity of the rock matrix and the stronger environmental pressure at higher altitudes may force the communities to a higher local diversification. View Full-Text
Keywords: Antarctica; endolithic communities; habitat; sampling effort; fungi; bacteria; amplicon sequencing Antarctica; endolithic communities; habitat; sampling effort; fungi; bacteria; amplicon sequencing
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MDPI and ACS Style

Coleine, C.; Pombubpa, N.; Zucconi, L.; Onofri, S.; Turchetti, B.; Buzzini, P.; Stajich, J.E.; Selbmann, L. Uncovered Microbial Diversity in Antarctic Cryptoendolithic Communities Sampling Three Representative Locations of the Victoria Land. Microorganisms 2020, 8, 942. https://doi.org/10.3390/microorganisms8060942

AMA Style

Coleine C, Pombubpa N, Zucconi L, Onofri S, Turchetti B, Buzzini P, Stajich JE, Selbmann L. Uncovered Microbial Diversity in Antarctic Cryptoendolithic Communities Sampling Three Representative Locations of the Victoria Land. Microorganisms. 2020; 8(6):942. https://doi.org/10.3390/microorganisms8060942

Chicago/Turabian Style

Coleine, Claudia, Nuttapon Pombubpa, Laura Zucconi, Silvano Onofri, Benedetta Turchetti, Pietro Buzzini, Jason E. Stajich, and Laura Selbmann. 2020. "Uncovered Microbial Diversity in Antarctic Cryptoendolithic Communities Sampling Three Representative Locations of the Victoria Land" Microorganisms 8, no. 6: 942. https://doi.org/10.3390/microorganisms8060942

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