Article (Scientific journals)
ON THE USE OF HIGH-THROUGHPUT SEQUENCING FOR THE STUDY OF CYANOBACTERIAL DIVERSITY IN ANTARCTIC AQUATIC MATS 1
Stelmach Pessi, Igor; De Carvalho Maalouf, Pedro; Laughinghouse, Haywood Dail et al.
2016In Journal of Phycology, 52, p. 356–368
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Keywords :
cyanobacteria; diversity; Antarctica; bioinformatic analysis; Next Generation Sequencing; 16S rRNA; microbial mats; lakes
Abstract :
[en] The study of Antarctic cyanobacterial diversity has been mostly limited to morphological identification and traditional molecular techniques. High-throughput sequencing (HTS) allows a much better understanding of microbial distribution in the environment, but its application is hampered by several methodological and analytical challenges. In this work we explored the use of HTS as a tool for the study of cyanobacterial diversity in Antarctic aquatic mats. Our results highlight the importance of using artificial communities to validate the parameters of the bioinformatics procedure used to analyse natural communities, since pipeline-dependent biases had a strong effect on the observed community structures. Analysis of microbial mats from five Antarctic lakes and an aquatic biofilm from the Sub-Antarctic showed that HTS is a valuable tool for the assessment of cyanobacterial diversity. The majority of the OTUs retrieved were related to filamentous taxa such as Leptolyngbya and Phormidium, which are common genera in Antarctic lacustrine microbial mats. However, other phylotypes related to different taxa such as Geitlerinema, Pseudanabaena, Synechococcus and Chamaesiphon, Calothrix and Coleodesmium were also found. Results revealed a much higher diversity than what had been reported using traditional methods and also highlighted remarkable differences between the cyanobacterial communities of the studied lakes. The aquatic biofilm from the Sub-Antarctic had a distinct cyanobacterial community in comparison to the studied Antarctic lakes, which, in turn, displayed a salinity-dependent community-structure at the phylotype level.
Research center :
CIP - Centre d'Ingénierie des Protéines - ULiège
Disciplines :
Environmental sciences & ecology
Microbiology
Author, co-author :
Stelmach Pessi, Igor ;  Université de Liège > Département des sciences de la vie > Centre d'ingénierie des protéines
De Carvalho Maalouf, Pedro
Laughinghouse, Haywood Dail
Baurain, Denis  ;  Université de Liège > Département des sciences de la vie > Phylogénomique des eucaryotes
Wilmotte, Annick  ;  Université de Liège > Département des sciences de la vie > Physiologie et génétique bactériennes
Language :
English
Title :
ON THE USE OF HIGH-THROUGHPUT SEQUENCING FOR THE STUDY OF CYANOBACTERIAL DIVERSITY IN ANTARCTIC AQUATIC MATS 1
Publication date :
2016
Journal title :
Journal of Phycology
ISSN :
0022-3646
eISSN :
1529-8817
Publisher :
Blackwell Publishing, Oxford, United Kingdom
Volume :
52
Pages :
356–368
Peer reviewed :
Peer Reviewed verified by ORBi
Name of the research project :
CCAMBIO, PYROCYANO, BIPOLES, BELDIVA, AMBIO
Funders :
F.R.S.-FNRS - Fonds de la Recherche Scientifique [BE]
BELSPO - SPP Politique scientifique - Service Public Fédéral de Programmation Politique scientifique
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since 20 March 2016

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