Cold habitats are diminishing as a result of climate change, while at the same time little is known of the diversity or biogeography of microbes that thrive in such environments. Furthermore, despite the evident importance of cyanobacteria in polar areas, there are hardly any studies focusing on the phylogenetic relationship between the Arctic and Antarctic cyanobacteria. Here, we described cyanobacterial mats as well as epi- and endoliths collected from shallow streams and rocks, respectively, in the northwestern part of Svalbard. Thirteen populations were identified and characterized by employing morphological and molecular (16S rRNA gene sequences) techniques. Our results were compared to analogous information (available from the GenBank) and related to organisms from similar environments located in the Northern and Southern Hemispheres. In general, the morphological and molecular characterizations complemented each other, and the identified Arctic populations belonged to the following orders: Oscillatoriales (6), Nostocales (6), and Chroococcales (1). Twelve of the identified polar populations showed high similarity (94–99% 16S rRNA gene sequence) when compared to other Arctic and Antarctic cyanobacteria. Mat builder Phormidium autumnale shared only 88% similarity with sequences deposited in the GenBank. Our results demonstrate remarkable similarities of microbial life of Svalbard to that in Antarctica and the High Himalayas. Our findings are a starting point for future comparative research of the benthic as well as endolithic populations of cyanobacteria from the Arctic and Antarctica that will yield new insights into the cold and dry limits of life on Earth. They imply global distributions of the low-temperature cyanobacterial populations throughout the cold terrestrial biosphere.
Polar Biology – Springer Journals
Published: Feb 17, 2017
It’s your single place to instantly
discover and read the research
that matters to you.
Enjoy affordable access to
over 18 million articles from more than
15,000 peer-reviewed journals.
All for just $49/month
Query the DeepDyve database, plus search all of PubMed and Google Scholar seamlessly
Save any article or search result from DeepDyve, PubMed, and Google Scholar... all in one place.
Get unlimited, online access to over 18 million full-text articles from more than 15,000 scientific journals.
Read from thousands of the leading scholarly journals from SpringerNature, Elsevier, Wiley-Blackwell, Oxford University Press and more.
All the latest content is available, no embargo periods.
“Hi guys, I cannot tell you how much I love this resource. Incredible. I really believe you've hit the nail on the head with this site in regards to solving the research-purchase issue.”Daniel C.
“Whoa! It’s like Spotify but for academic articles.”@Phil_Robichaud
“I must say, @deepdyve is a fabulous solution to the independent researcher's problem of #access to #information.”@deepthiw
“My last article couldn't be possible without the platform @deepdyve that makes journal papers cheaper.”@JoseServera