Article (Scientific journals)
Bacterial community composition in relation to bedrock type and macrobiota in soils 1 from the Sør Rondane Mountains, East Antarctica
Tytgat, Bjorn; Verleyen, Elie; Sweetlove, Maxime et al.
2016In FEMS Microbiology Ecology, 92, p. 126
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Keywords :
microbial diversity; Sör Rondane Mountains; Antarctica; granite; gneiss; 16S rRNA; Illumina; nunataks
Abstract :
[en] Antarctic soils are known to be oligotrophic and of having low buffering capacities. It is expected that this is particularly the case for inland high altitude regions. We hypothesized that the bedrock type and the presence of macrobiota in these soils enforce a high selective pressure on their bacterial communities. To test this, we analysed the bacterial community structure in 52 soil samples from the western Sør Rondane Mountains (Dronning Maud Land, East Antarctica) using the Illumina MiSeq platform in combination with ARISA fingerprinting. The samples were taken along broad environmental gradients in an area covering nearly 1000 km². Ordination and variation partitioning analyses revealed that the total organic carbon content was the most significant variable in structuring the bacterial communities, followed by pH, electric conductivity, bedrock type and the moisture content, while spatial distance was of relatively minor importance. Acidobacteria (Chloracidobacteria) and Actinobacteria (Actinomycetales) dominated gneiss derived mineral soil samples, while Proteobacteria (Sphingomonadaceae), Cyanobacteria, Armatimonadetes and candidate division FBP dominated soil samples with a high total organic carbon content that were mainly situated on granite derived bedrock.
Research center :
Centre for Protein Engineering
Disciplines :
Environmental sciences & ecology
Microbiology
Author, co-author :
Tytgat, Bjorn
Verleyen, Elie
Sweetlove, Maxime
D'hondt, Sofie
Clerck, Pia
Van Ranst, Eric
Peeters, Karolien
Roberts, Steven
Namsaraev, Zorigto
Wilmotte, Annick  ;  Université de Liège > Département des sciences de la vie > Physiologie et génétique bactériennes
Vyverman, Wim
Willems, Anne
Language :
English
Title :
Bacterial community composition in relation to bedrock type and macrobiota in soils 1 from the Sør Rondane Mountains, East Antarctica
Publication date :
2016
Journal title :
FEMS Microbiology Ecology
ISSN :
0168-6496
eISSN :
1574-6941
Publisher :
Blackwell Publishing, Oxford, United Kingdom
Volume :
92
Pages :
fiw126
Peer reviewed :
Peer Reviewed verified by ORBi
Name of the research project :
BELDIVA
Funders :
BELSPO - SPP Politique scientifique - Service Public Fédéral de Programmation Politique scientifique
F.R.S.-FNRS - Fonds de la Recherche Scientifique [BE]
Special Research Fund BOF of Ghent University
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