Evidence for successional development in Antarctic hypolithic bacterial communities
Abstract Hypoliths (cryptic microbial assemblages that develop on the undersides of translucent rocks) are significant contributors to regional C and N budgets in both hot and cold deserts. Previous studies in the Dry Valleys of Eastern Antarctica have reported three morphologically distinct hypolit...
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Oxford University Press (OUP)
2013
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croxfordunivpr:10.1038/ismej.2013.94 2024-10-13T14:03:27+00:00 Evidence for successional development in Antarctic hypolithic bacterial communities Makhalanyane, Thulani P Valverde, Angel Birkeland, Nils-Kåre Cary, Stephen C Marla Tuffin, I Cowan, Don A 2013 http://dx.doi.org/10.1038/ismej.2013.94 http://www.nature.com/articles/ismej201394.pdf http://www.nature.com/articles/ismej201394 https://academic.oup.com/ismej/article-pdf/7/11/2080/56426836/41396_2013_article_bfismej201394.pdf en eng Oxford University Press (OUP) https://academic.oup.com/pages/standard-publication-reuse-rights http://www.springer.com/tdm http://www.springer.com/tdm The ISME Journal volume 7, issue 11, page 2080-2090 ISSN 1751-7362 1751-7370 journal-article 2013 croxfordunivpr https://doi.org/10.1038/ismej.2013.94 2024-10-01T04:03:48Z Abstract Hypoliths (cryptic microbial assemblages that develop on the undersides of translucent rocks) are significant contributors to regional C and N budgets in both hot and cold deserts. Previous studies in the Dry Valleys of Eastern Antarctica have reported three morphologically distinct hypolithic community types: cyanobacteria dominated (type I), fungus dominated (type II) and moss dominated (type III). Here we present terminal-restriction fragment length polymorphism analyses to elucidate the bacterial community structure in hypolithons and the surrounding soils. We show clear and robust distinction in bacterial composition between bulk surface soils and hypolithons. Moreover, the bacterial assemblages were similar in types II and III hypolithons and clearly distinct from those found in type I. Through 16S rRNA gene 454 pyrosequencing, we show that Proteobacteria dominated all three types of hypolithic communities. As expected, Cyanobacteria were more abundant in type I hypolithons, whereas Actinobacteria were relatively more abundant in types II and III hypolithons, and were the dominant group in soils. Using a probabilistic dissimilarity metric and random sampling, we demonstrate that deterministic processes are more important in shaping the structure of the bacterial community found in types II and III hypolithons. Most notably, the data presented in this study suggest that hypolithic bacterial communities establish via a successional model, with the type I hypolithons acting as the basal development state. Article in Journal/Newspaper Antarc* Antarctic Antarctica Oxford University Press Antarctic The ISME Journal 7 11 2080 2090 |
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Open Polar |
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Oxford University Press |
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croxfordunivpr |
language |
English |
description |
Abstract Hypoliths (cryptic microbial assemblages that develop on the undersides of translucent rocks) are significant contributors to regional C and N budgets in both hot and cold deserts. Previous studies in the Dry Valleys of Eastern Antarctica have reported three morphologically distinct hypolithic community types: cyanobacteria dominated (type I), fungus dominated (type II) and moss dominated (type III). Here we present terminal-restriction fragment length polymorphism analyses to elucidate the bacterial community structure in hypolithons and the surrounding soils. We show clear and robust distinction in bacterial composition between bulk surface soils and hypolithons. Moreover, the bacterial assemblages were similar in types II and III hypolithons and clearly distinct from those found in type I. Through 16S rRNA gene 454 pyrosequencing, we show that Proteobacteria dominated all three types of hypolithic communities. As expected, Cyanobacteria were more abundant in type I hypolithons, whereas Actinobacteria were relatively more abundant in types II and III hypolithons, and were the dominant group in soils. Using a probabilistic dissimilarity metric and random sampling, we demonstrate that deterministic processes are more important in shaping the structure of the bacterial community found in types II and III hypolithons. Most notably, the data presented in this study suggest that hypolithic bacterial communities establish via a successional model, with the type I hypolithons acting as the basal development state. |
format |
Article in Journal/Newspaper |
author |
Makhalanyane, Thulani P Valverde, Angel Birkeland, Nils-Kåre Cary, Stephen C Marla Tuffin, I Cowan, Don A |
spellingShingle |
Makhalanyane, Thulani P Valverde, Angel Birkeland, Nils-Kåre Cary, Stephen C Marla Tuffin, I Cowan, Don A Evidence for successional development in Antarctic hypolithic bacterial communities |
author_facet |
Makhalanyane, Thulani P Valverde, Angel Birkeland, Nils-Kåre Cary, Stephen C Marla Tuffin, I Cowan, Don A |
author_sort |
Makhalanyane, Thulani P |
title |
Evidence for successional development in Antarctic hypolithic bacterial communities |
title_short |
Evidence for successional development in Antarctic hypolithic bacterial communities |
title_full |
Evidence for successional development in Antarctic hypolithic bacterial communities |
title_fullStr |
Evidence for successional development in Antarctic hypolithic bacterial communities |
title_full_unstemmed |
Evidence for successional development in Antarctic hypolithic bacterial communities |
title_sort |
evidence for successional development in antarctic hypolithic bacterial communities |
publisher |
Oxford University Press (OUP) |
publishDate |
2013 |
url |
http://dx.doi.org/10.1038/ismej.2013.94 http://www.nature.com/articles/ismej201394.pdf http://www.nature.com/articles/ismej201394 https://academic.oup.com/ismej/article-pdf/7/11/2080/56426836/41396_2013_article_bfismej201394.pdf |
geographic |
Antarctic |
geographic_facet |
Antarctic |
genre |
Antarc* Antarctic Antarctica |
genre_facet |
Antarc* Antarctic Antarctica |
op_source |
The ISME Journal volume 7, issue 11, page 2080-2090 ISSN 1751-7362 1751-7370 |
op_rights |
https://academic.oup.com/pages/standard-publication-reuse-rights http://www.springer.com/tdm http://www.springer.com/tdm |
op_doi |
https://doi.org/10.1038/ismej.2013.94 |
container_title |
The ISME Journal |
container_volume |
7 |
container_issue |
11 |
container_start_page |
2080 |
op_container_end_page |
2090 |
_version_ |
1812808463978332160 |