Characterization of the bacterial communities on recent Icelandic volcanic deposits of different ages
Background: Basalt is the most common igneous rock on the Earth's surface covering. Basalt-associated microorganisms drive the cycling and sequestration of different elements such as nitrogen, carbon and other nutrients, which facilitate subsequent pioneer and plant development, impacting long-...
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ftunivgent:oai:archive.ugent.be:8579076 2023-06-11T04:13:08+02:00 Characterization of the bacterial communities on recent Icelandic volcanic deposits of different ages Byloos, Bo Monsieurs, Pieter Mysara, Mohamed Leys, Natalie Boon, Nico Van Houdt, Rob 2018 application/pdf https://biblio.ugent.be/publication/8579076 http://hdl.handle.net/1854/LU-8579076 https://doi.org/10.1186/s12866-018-1262-0 https://biblio.ugent.be/publication/8579076/file/8579077 eng eng https://biblio.ugent.be/publication/8579076 http://hdl.handle.net/1854/LU-8579076 http://dx.doi.org/10.1186/s12866-018-1262-0 https://biblio.ugent.be/publication/8579076/file/8579077 Creative Commons Attribution 4.0 International Public License (CC-BY 4.0) info:eu-repo/semantics/openAccess BMC MICROBIOLOGY ISSN: 1471-2180 Earth and Environmental Sciences Biology and Life Sciences Basalt Lava Krafla Iceland Chronosequence 16S rRNA gene amplicon sequencing Bacterial communities FLOW-CYTOMETRY MICROBIAL COMMUNITIES ROCK ALTERATION BASALTIC GLASS SEQUENCE DATA DIVERSITY RNA SEA LICHEN SOIL journalArticle info:eu-repo/semantics/article info:eu-repo/semantics/publishedVersion 2018 ftunivgent https://doi.org/10.1186/s12866-018-1262-0 2023-05-10T22:42:57Z Background: Basalt is the most common igneous rock on the Earth's surface covering. Basalt-associated microorganisms drive the cycling and sequestration of different elements such as nitrogen, carbon and other nutrients, which facilitate subsequent pioneer and plant development, impacting long-term regulation of the Earth's temperature and biosphere. The initial processes of colonization and subsequent rock weathering by microbial communities are still poorly understood and relatively few data are available on the diversity and richness of the communities inhabiting successive and chronological lava flows. In this study, the bacterial communities present on lava deposits from different eruptions of the 1975-84 Krafla Fires (32-, 35-and 39-year old, respectively) at the Krafla, Iceland, were determined. Results: Three sites were sampled for each deposit (32-, 35-and 39-year old), two proximal sites (at 10 m distance) and one more distant site (at 100 m from the two other sites). The determined chemical composition and metal concentrations were similar for the three basalt deposits. No significant differences were observed in the total number of cells in each flow. 16S rRNA gene amplicon sequencing showed that the most abundant classified phylum across the 3 flows was Proteobacteria, although predominance of Acidobacteria, Actinobacteria and Firmicutes was observed for some sampling sites. In addition, a considerable fraction of the operational taxonomic units remained unclassified. Alpha diversity (Shannon, inverse Simpson and Chao), HOMOVA and AMOVA only showed a significant difference for Shannon between the 32-and 39-year old flow (p < 0.05). Nonmetric multidimensional scaling (NMDS) analysis showed that age significantly (p = 0.026) influenced the leftward movement along NMDS axis 1. Conclusions: Although NMDS indicated that the (relatively small) age difference of the deposits appeared to impact the bacterial community, this analysis was not consistent with AMOVA and HOMOVA, indicating no significant ... Article in Journal/Newspaper Iceland Ghent University Academic Bibliography Krafla ENVELOPE(-16.747,-16.747,65.713,65.713) BMC Microbiology 18 1 |
institution |
Open Polar |
collection |
Ghent University Academic Bibliography |
op_collection_id |
ftunivgent |
language |
English |
topic |
Earth and Environmental Sciences Biology and Life Sciences Basalt Lava Krafla Iceland Chronosequence 16S rRNA gene amplicon sequencing Bacterial communities FLOW-CYTOMETRY MICROBIAL COMMUNITIES ROCK ALTERATION BASALTIC GLASS SEQUENCE DATA DIVERSITY RNA SEA LICHEN SOIL |
spellingShingle |
Earth and Environmental Sciences Biology and Life Sciences Basalt Lava Krafla Iceland Chronosequence 16S rRNA gene amplicon sequencing Bacterial communities FLOW-CYTOMETRY MICROBIAL COMMUNITIES ROCK ALTERATION BASALTIC GLASS SEQUENCE DATA DIVERSITY RNA SEA LICHEN SOIL Byloos, Bo Monsieurs, Pieter Mysara, Mohamed Leys, Natalie Boon, Nico Van Houdt, Rob Characterization of the bacterial communities on recent Icelandic volcanic deposits of different ages |
topic_facet |
Earth and Environmental Sciences Biology and Life Sciences Basalt Lava Krafla Iceland Chronosequence 16S rRNA gene amplicon sequencing Bacterial communities FLOW-CYTOMETRY MICROBIAL COMMUNITIES ROCK ALTERATION BASALTIC GLASS SEQUENCE DATA DIVERSITY RNA SEA LICHEN SOIL |
description |
Background: Basalt is the most common igneous rock on the Earth's surface covering. Basalt-associated microorganisms drive the cycling and sequestration of different elements such as nitrogen, carbon and other nutrients, which facilitate subsequent pioneer and plant development, impacting long-term regulation of the Earth's temperature and biosphere. The initial processes of colonization and subsequent rock weathering by microbial communities are still poorly understood and relatively few data are available on the diversity and richness of the communities inhabiting successive and chronological lava flows. In this study, the bacterial communities present on lava deposits from different eruptions of the 1975-84 Krafla Fires (32-, 35-and 39-year old, respectively) at the Krafla, Iceland, were determined. Results: Three sites were sampled for each deposit (32-, 35-and 39-year old), two proximal sites (at 10 m distance) and one more distant site (at 100 m from the two other sites). The determined chemical composition and metal concentrations were similar for the three basalt deposits. No significant differences were observed in the total number of cells in each flow. 16S rRNA gene amplicon sequencing showed that the most abundant classified phylum across the 3 flows was Proteobacteria, although predominance of Acidobacteria, Actinobacteria and Firmicutes was observed for some sampling sites. In addition, a considerable fraction of the operational taxonomic units remained unclassified. Alpha diversity (Shannon, inverse Simpson and Chao), HOMOVA and AMOVA only showed a significant difference for Shannon between the 32-and 39-year old flow (p < 0.05). Nonmetric multidimensional scaling (NMDS) analysis showed that age significantly (p = 0.026) influenced the leftward movement along NMDS axis 1. Conclusions: Although NMDS indicated that the (relatively small) age difference of the deposits appeared to impact the bacterial community, this analysis was not consistent with AMOVA and HOMOVA, indicating no significant ... |
format |
Article in Journal/Newspaper |
author |
Byloos, Bo Monsieurs, Pieter Mysara, Mohamed Leys, Natalie Boon, Nico Van Houdt, Rob |
author_facet |
Byloos, Bo Monsieurs, Pieter Mysara, Mohamed Leys, Natalie Boon, Nico Van Houdt, Rob |
author_sort |
Byloos, Bo |
title |
Characterization of the bacterial communities on recent Icelandic volcanic deposits of different ages |
title_short |
Characterization of the bacterial communities on recent Icelandic volcanic deposits of different ages |
title_full |
Characterization of the bacterial communities on recent Icelandic volcanic deposits of different ages |
title_fullStr |
Characterization of the bacterial communities on recent Icelandic volcanic deposits of different ages |
title_full_unstemmed |
Characterization of the bacterial communities on recent Icelandic volcanic deposits of different ages |
title_sort |
characterization of the bacterial communities on recent icelandic volcanic deposits of different ages |
publishDate |
2018 |
url |
https://biblio.ugent.be/publication/8579076 http://hdl.handle.net/1854/LU-8579076 https://doi.org/10.1186/s12866-018-1262-0 https://biblio.ugent.be/publication/8579076/file/8579077 |
long_lat |
ENVELOPE(-16.747,-16.747,65.713,65.713) |
geographic |
Krafla |
geographic_facet |
Krafla |
genre |
Iceland |
genre_facet |
Iceland |
op_source |
BMC MICROBIOLOGY ISSN: 1471-2180 |
op_relation |
https://biblio.ugent.be/publication/8579076 http://hdl.handle.net/1854/LU-8579076 http://dx.doi.org/10.1186/s12866-018-1262-0 https://biblio.ugent.be/publication/8579076/file/8579077 |
op_rights |
Creative Commons Attribution 4.0 International Public License (CC-BY 4.0) info:eu-repo/semantics/openAccess |
op_doi |
https://doi.org/10.1186/s12866-018-1262-0 |
container_title |
BMC Microbiology |
container_volume |
18 |
container_issue |
1 |
_version_ |
1768389815288463360 |