Bacterial Communities Involved in Soil Formation and PlantEstablishment Triggered by Pyrite Bioweathering on ArcticMoraines
Abstract In arctic glacier moraines, bioweathering primed by microbial iron oxidizers creates fertility gradients that accelerate soil development and plant establishment. With the aim of investigating the change of bacterial diversity in a pyrite-weathered gradient, we analyzed the composition of t...
Published in: | Microbial Ecology |
---|---|
Main Authors: | , , , , , , |
Other Authors: | , , , , , , |
Format: | Article in Journal/Newspaper |
Language: | English |
Published: |
2011
|
Subjects: | |
Online Access: | http://hdl.handle.net/10278/32319 https://doi.org/10.1007/s00248-010-9758-7 |
id |
ftuniveneziairis:oai:iris.unive.it:10278/32319 |
---|---|
record_format |
openpolar |
spelling |
ftuniveneziairis:oai:iris.unive.it:10278/32319 2024-04-14T08:08:09+00:00 Bacterial Communities Involved in Soil Formation and PlantEstablishment Triggered by Pyrite Bioweathering on ArcticMoraines MAPELLI F. MARASCO R. RIZZI A. VENTURA S. DAFFONCHIO D. BORIN S. BALDI, Franco Mapelli, F. Marasco, R. Rizzi, A. Baldi, Franco Ventura, S. Daffonchio, D. Borin, S. 2011 http://hdl.handle.net/10278/32319 https://doi.org/10.1007/s00248-010-9758-7 eng eng info:eu-repo/semantics/altIdentifier/wos/WOS:000287251000019 volume:61 firstpage:438 lastpage:447 journal:MICROBIAL ECOLOGY http://hdl.handle.net/10278/32319 doi:10.1007/s00248-010-9758-7 info:eu-repo/semantics/altIdentifier/scopus/2-s2.0-79951514798 info:eu-repo/semantics/openAccess info:eu-repo/semantics/article 2011 ftuniveneziairis https://doi.org/10.1007/s00248-010-9758-7 2024-03-21T18:01:37Z Abstract In arctic glacier moraines, bioweathering primed by microbial iron oxidizers creates fertility gradients that accelerate soil development and plant establishment. With the aim of investigating the change of bacterial diversity in a pyrite-weathered gradient, we analyzed the composition of the bacterial communities involved in the process by sequencing 16S rRNA gene libraries from different biological soil crusts (BSC). Bacterial communities in three BSC of different morphology, located within 1 m distance downstream a pyritic conglomerate rock, were significantly diverse. The glacier moraine surrounding the weathered site showed wide phylogenetic diversity and high evenness with 15 represented bacterial classes, dominated by Alphaproteobacteria and pioneer Cyanobacteria colonizers. The bioweathered area showed the lowest diversity indexes and only nine bacterial families, largely dominated by Acidobacteriaceae and Acetobacteraceae typical of acidic environments, in accordance with the low pH of the BSC. In the weathered BSC, iron-oxidizing bacteria were cultivated, with counts decreasing along with the increase of distance from the rock, and nutrient release from the rock was revealed by environmental scanning electron microscopy-energy dispersive X-ray analyses. The vegetated area showed the presence of Actinomycetales, Verrucomicrobiales, Gemmatimonadales, Burkholderiales, and Rhizobiales, denoting a bacterial community typical of developed soils and indicating that the lithoid substrate of the bare moraine was here subjected to an accelerated colonization, driven by iron-oxidizing activity. Article in Journal/Newspaper Arctic Università Ca’ Foscari Venezia: ARCA (Archivio Istituzionale della Ricerca) Arctic Microbial Ecology 61 2 438 447 |
institution |
Open Polar |
collection |
Università Ca’ Foscari Venezia: ARCA (Archivio Istituzionale della Ricerca) |
op_collection_id |
ftuniveneziairis |
language |
English |
description |
Abstract In arctic glacier moraines, bioweathering primed by microbial iron oxidizers creates fertility gradients that accelerate soil development and plant establishment. With the aim of investigating the change of bacterial diversity in a pyrite-weathered gradient, we analyzed the composition of the bacterial communities involved in the process by sequencing 16S rRNA gene libraries from different biological soil crusts (BSC). Bacterial communities in three BSC of different morphology, located within 1 m distance downstream a pyritic conglomerate rock, were significantly diverse. The glacier moraine surrounding the weathered site showed wide phylogenetic diversity and high evenness with 15 represented bacterial classes, dominated by Alphaproteobacteria and pioneer Cyanobacteria colonizers. The bioweathered area showed the lowest diversity indexes and only nine bacterial families, largely dominated by Acidobacteriaceae and Acetobacteraceae typical of acidic environments, in accordance with the low pH of the BSC. In the weathered BSC, iron-oxidizing bacteria were cultivated, with counts decreasing along with the increase of distance from the rock, and nutrient release from the rock was revealed by environmental scanning electron microscopy-energy dispersive X-ray analyses. The vegetated area showed the presence of Actinomycetales, Verrucomicrobiales, Gemmatimonadales, Burkholderiales, and Rhizobiales, denoting a bacterial community typical of developed soils and indicating that the lithoid substrate of the bare moraine was here subjected to an accelerated colonization, driven by iron-oxidizing activity. |
author2 |
Mapelli, F. Marasco, R. Rizzi, A. Baldi, Franco Ventura, S. Daffonchio, D. Borin, S. |
format |
Article in Journal/Newspaper |
author |
MAPELLI F. MARASCO R. RIZZI A. VENTURA S. DAFFONCHIO D. BORIN S. BALDI, Franco |
spellingShingle |
MAPELLI F. MARASCO R. RIZZI A. VENTURA S. DAFFONCHIO D. BORIN S. BALDI, Franco Bacterial Communities Involved in Soil Formation and PlantEstablishment Triggered by Pyrite Bioweathering on ArcticMoraines |
author_facet |
MAPELLI F. MARASCO R. RIZZI A. VENTURA S. DAFFONCHIO D. BORIN S. BALDI, Franco |
author_sort |
MAPELLI F. |
title |
Bacterial Communities Involved in Soil Formation and PlantEstablishment Triggered by Pyrite Bioweathering on ArcticMoraines |
title_short |
Bacterial Communities Involved in Soil Formation and PlantEstablishment Triggered by Pyrite Bioweathering on ArcticMoraines |
title_full |
Bacterial Communities Involved in Soil Formation and PlantEstablishment Triggered by Pyrite Bioweathering on ArcticMoraines |
title_fullStr |
Bacterial Communities Involved in Soil Formation and PlantEstablishment Triggered by Pyrite Bioweathering on ArcticMoraines |
title_full_unstemmed |
Bacterial Communities Involved in Soil Formation and PlantEstablishment Triggered by Pyrite Bioweathering on ArcticMoraines |
title_sort |
bacterial communities involved in soil formation and plantestablishment triggered by pyrite bioweathering on arcticmoraines |
publishDate |
2011 |
url |
http://hdl.handle.net/10278/32319 https://doi.org/10.1007/s00248-010-9758-7 |
geographic |
Arctic |
geographic_facet |
Arctic |
genre |
Arctic |
genre_facet |
Arctic |
op_relation |
info:eu-repo/semantics/altIdentifier/wos/WOS:000287251000019 volume:61 firstpage:438 lastpage:447 journal:MICROBIAL ECOLOGY http://hdl.handle.net/10278/32319 doi:10.1007/s00248-010-9758-7 info:eu-repo/semantics/altIdentifier/scopus/2-s2.0-79951514798 |
op_rights |
info:eu-repo/semantics/openAccess |
op_doi |
https://doi.org/10.1007/s00248-010-9758-7 |
container_title |
Microbial Ecology |
container_volume |
61 |
container_issue |
2 |
container_start_page |
438 |
op_container_end_page |
447 |
_version_ |
1796305579376902144 |