Reference : Biogeography of terrestrial cyanobacteria from Antarctic ice-free areas
Scientific journals : Article
Life sciences : Microbiology
Life sciences : Environmental sciences & ecology
Biogeography of terrestrial cyanobacteria from Antarctic ice-free areas
[fr] Biogéographie des cyanobactéries terrestres des zones déglacées en Antarctique
Namsaraev, Zorigto [Université de Liège - ULiège > > Centre d'ingénierie des protéines >]
Mano, Marie-José mailto [Université de Liège - ULiège > Département des sciences de la vie > Enzymologie >]
Fernandez Carazo, Rafael mailto [Université de Liège - ULiège > > > Doct. sc. (bioch., biol. mol.&cell., bioinf.&mod.-Bologne)]
Wilmotte, Annick mailto [Université de Liège - ULiège > Département des sciences de la vie > Physiologie et génétique bactériennes >]
Annals of Glaciology
International Glaciological Society
Yes (verified by ORBi)
United Kingdom
[en] cyanobacteria ; Antarctica ; biogeography ; terretrial
[en] Cyanobacteria inhabit the Antarctic continent and have even been observed in the most
southerly ice-free areas of Antarctica (86–878 S). The highest molecular diversity of cyanobacterial communities was found in the areas located between 708 S and 808 S. Further south and further north from this zone, the diversity abruptly decreased. Seventy-nine per cent (33 of 42 operational taxonomic units) of Antarctic terrestrial cyanobacteria have a cosmopolitan distribution. Analysis of the sampling efforts shows that only three regions (southern Victoria Land, the Sør Rondane Mountains and Alexander Island) have been particularly well studied, while other areas did not receive enough attention. Although cyanobacteria possess a capacity for long-range transport, regional populations in Antarctic ice-free areas seem to exist. The cyanobacterial communities of the three most intensively studied regions, separated from each other by a distance of 3000–3400 km, had a low degree of similarity with each other. Further development of microbial biogeography demands a standardized approach. For this purpose, as a minimal standard, we suggest using the sequence of cyanobacterial 16S rRNA gene between Escherichia coli positions 405–780.
Centre d'Ingénierie des Protéines - CIP
Fonds de la Recherche Scientifique (Communauté française de Belgique) - F.R.S.-FNRS

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