Cyanobacterial diversity in soil crusts in the Sör Rondane Mountains
Antarctica is the only continent that is dominated by microbial (cyanobacteria and algae) and lower plant (predominantly mosses and lichens) communities. Cyanobacteria are photosynthetic bacteria that require solar light, liquid water, air and some mineral nutrients for growth. They serve as primary...
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ftorbi:oai:orbi.ulg.ac.be:2268/206797 2024-10-13T14:03:03+00:00 Cyanobacterial diversity in soil crusts in the Sör Rondane Mountains Namsaraev, Zorigto Mano, Marie-José Wilmotte, Annick CIP - Centre d'Ingénierie des Protéines - ULiège 2016-08 A0 https://orbi.uliege.be/handle/2268/206797 en eng https://orbi.uliege.be/handle/2268/206797 info:hdl:2268/206797 XXXIV SCAR Biennial Meetings and Open Science Conference 2016, Kuala Lumpur, Malaysia [MY], 20-30 August 2016 Biodiversity cyanobacteria Antarctica Life sciences Microbiology Sciences du vivant Microbiologie conference poster not in proceedings http://purl.org/coar/resource_type/c_18co info:eu-repo/semantics/conferencePoster 2016 ftorbi 2024-09-27T07:01:59Z Antarctica is the only continent that is dominated by microbial (cyanobacteria and algae) and lower plant (predominantly mosses and lichens) communities. Cyanobacteria are photosynthetic bacteria that require solar light, liquid water, air and some mineral nutrients for growth. They serve as primary producers of organic matter in Antarctic ecosystems providing energy to other physiological groups of microorganisms and invertebrates. Cyanobacteria form macroscopically visible crusts or thin biofilms on the surface of soils and rocks, or occupy endolithic niches in Antarctic mountains. Mountains exposed above the ice sheet could have remained ice-free during glaciation maxima in Antarctica. They could serve as a refuge for terrestrial biodiversity and potential source for recolonization of surrounding habitats during glacier retreat. Cyanobacterial diversity in habitats located above 1 km a.s.l. was studied in several Antarctic locations. These include: the Vinson Massif in Ellsworth Mountains (2000-2500 m a.s.l.), Beacon (1176 m a.s.l.) and University Valleys (1700 m a.s.l.) in the "stable upland zone" of the McMurdo Dry Valleys (Southern Victoria Land) and the Sör Rondane Mountains (1370-1700 m a.s.l.) (Yergeau et al., 2007; Wood et al., 2008; Fernandez-Carazo et al., 2012). The goal of our work was to study cyanobacterial diversity of cyanobacteria in the Sör Rondane Mountains in the vicinity of Belgian Princess Elisabeth Station. Previous estimates of the diversity showed the presence of 10 morphotypes and 13 OTUs of cyanobacteria in 10 samples of biofilms and microbial crusts (Fernandez-Carazo et al., 2012). We performed a broader sampling and studied cyanobacterial diversity using DGGE with cyanospecific primers and microscopy. In 126 samples, we observed 15 morphotypes of cyanobacteria. 28 representative samples were selected for molecular analyses that revealed the presence of 28 OTUs (groups of 16S rRNA sequences sharing at least 97,5% sequence similarity). Comparison with other mountainous areas of ... Conference Object Antarc* Antarctic Antarctica Ice Sheet McMurdo Dry Valleys Victoria Land University of Liège: ORBi (Open Repository and Bibliography) Antarctic Ellsworth Mountains ENVELOPE(-85.000,-85.000,-78.750,-78.750) Fernandez ENVELOPE(-62.233,-62.233,-63.250,-63.250) McMurdo Dry Valleys Victoria Land Vinson Massif ENVELOPE(-85.417,-85.417,-78.583,-78.583) |
institution |
Open Polar |
collection |
University of Liège: ORBi (Open Repository and Bibliography) |
op_collection_id |
ftorbi |
language |
English |
topic |
Biodiversity cyanobacteria Antarctica Life sciences Microbiology Sciences du vivant Microbiologie |
spellingShingle |
Biodiversity cyanobacteria Antarctica Life sciences Microbiology Sciences du vivant Microbiologie Namsaraev, Zorigto Mano, Marie-José Wilmotte, Annick Cyanobacterial diversity in soil crusts in the Sör Rondane Mountains |
topic_facet |
Biodiversity cyanobacteria Antarctica Life sciences Microbiology Sciences du vivant Microbiologie |
description |
Antarctica is the only continent that is dominated by microbial (cyanobacteria and algae) and lower plant (predominantly mosses and lichens) communities. Cyanobacteria are photosynthetic bacteria that require solar light, liquid water, air and some mineral nutrients for growth. They serve as primary producers of organic matter in Antarctic ecosystems providing energy to other physiological groups of microorganisms and invertebrates. Cyanobacteria form macroscopically visible crusts or thin biofilms on the surface of soils and rocks, or occupy endolithic niches in Antarctic mountains. Mountains exposed above the ice sheet could have remained ice-free during glaciation maxima in Antarctica. They could serve as a refuge for terrestrial biodiversity and potential source for recolonization of surrounding habitats during glacier retreat. Cyanobacterial diversity in habitats located above 1 km a.s.l. was studied in several Antarctic locations. These include: the Vinson Massif in Ellsworth Mountains (2000-2500 m a.s.l.), Beacon (1176 m a.s.l.) and University Valleys (1700 m a.s.l.) in the "stable upland zone" of the McMurdo Dry Valleys (Southern Victoria Land) and the Sör Rondane Mountains (1370-1700 m a.s.l.) (Yergeau et al., 2007; Wood et al., 2008; Fernandez-Carazo et al., 2012). The goal of our work was to study cyanobacterial diversity of cyanobacteria in the Sör Rondane Mountains in the vicinity of Belgian Princess Elisabeth Station. Previous estimates of the diversity showed the presence of 10 morphotypes and 13 OTUs of cyanobacteria in 10 samples of biofilms and microbial crusts (Fernandez-Carazo et al., 2012). We performed a broader sampling and studied cyanobacterial diversity using DGGE with cyanospecific primers and microscopy. In 126 samples, we observed 15 morphotypes of cyanobacteria. 28 representative samples were selected for molecular analyses that revealed the presence of 28 OTUs (groups of 16S rRNA sequences sharing at least 97,5% sequence similarity). Comparison with other mountainous areas of ... |
author2 |
CIP - Centre d'Ingénierie des Protéines - ULiège |
format |
Conference Object |
author |
Namsaraev, Zorigto Mano, Marie-José Wilmotte, Annick |
author_facet |
Namsaraev, Zorigto Mano, Marie-José Wilmotte, Annick |
author_sort |
Namsaraev, Zorigto |
title |
Cyanobacterial diversity in soil crusts in the Sör Rondane Mountains |
title_short |
Cyanobacterial diversity in soil crusts in the Sör Rondane Mountains |
title_full |
Cyanobacterial diversity in soil crusts in the Sör Rondane Mountains |
title_fullStr |
Cyanobacterial diversity in soil crusts in the Sör Rondane Mountains |
title_full_unstemmed |
Cyanobacterial diversity in soil crusts in the Sör Rondane Mountains |
title_sort |
cyanobacterial diversity in soil crusts in the sör rondane mountains |
publishDate |
2016 |
url |
https://orbi.uliege.be/handle/2268/206797 |
long_lat |
ENVELOPE(-85.000,-85.000,-78.750,-78.750) ENVELOPE(-62.233,-62.233,-63.250,-63.250) ENVELOPE(-85.417,-85.417,-78.583,-78.583) |
geographic |
Antarctic Ellsworth Mountains Fernandez McMurdo Dry Valleys Victoria Land Vinson Massif |
geographic_facet |
Antarctic Ellsworth Mountains Fernandez McMurdo Dry Valleys Victoria Land Vinson Massif |
genre |
Antarc* Antarctic Antarctica Ice Sheet McMurdo Dry Valleys Victoria Land |
genre_facet |
Antarc* Antarctic Antarctica Ice Sheet McMurdo Dry Valleys Victoria Land |
op_source |
XXXIV SCAR Biennial Meetings and Open Science Conference 2016, Kuala Lumpur, Malaysia [MY], 20-30 August 2016 |
op_relation |
https://orbi.uliege.be/handle/2268/206797 info:hdl:2268/206797 |
_version_ |
1812819484685107200 |