Results 51 to 60 of about 9,152 (177)

Lichen bleaching as a response to long‐term experimental warming in the High Arctic

Functional Ecology, EarlyView.
Read the free Plain Language Summary for this article on the Journal blog. Abstract Lichens are an important component of Arctic ecosystems. Studies have indicated a decline in the abundance of Arctic lichens during recent decades, which is often attributed to competitive pressure from vascular plants.
Jiří Šubrt, Mariana García Criado, Kevin K. Newsham, Claudia Colesie   +3 more
wiley   +1 more source

Evidence of habitat specificity in sponge microbiomes from Antarctica

Environmental Microbiome
Background Marine sponges and their microbiomes are ecosystem engineers distributed across the globe. However, most research has focused on tropical and temperate sponges, while polar regions like Antarctica have been largely neglected. Despite its harsh
Maria F. Manrique-de-la-Cuba, Génesis Parada-Pozo, Susana Rodríguez-Marconi, Marileyxis R. López-Rodríguez, Sebastián Abades, Nicole Trefault   +5 more
doaj   +1 more source

Mercury-resistant bacteria in Antarctic ecosystems

Faktori eksperimental'noi evolucii organizmiv, 2018
Aim. The research was focused on the assessment of the possible resistance of Antarctic microorganisms to mercury ions. Methods. Conventional microbiological methods of introducing of decimal dilutions to agar medium. Results. Microorganisms resistant to Hg2+ in high concentrations (up to 500 mg/l) were discovered among samples from Antarctica.
I. B. Sioma, V. M. Hovorukha, O. B. Tashyrev   +2 more
openaire   +2 more sources

Discovery of a cryptic aminoacidic triad involved in the temperature adaptation of GH1 enzymes

The FEBS Journal, EarlyView.
Cold‐active enzymes retain high catalytic activity at low temperatures but are characterized by thermal instability, a behavior not fully understood. Comparison between a cold‐active GH1 and its mesophilic counterparts highlights the role of a three‐residue motif (W‐M‐F) in conferring structural stability to a mesophilic GH1.
Stefania Digiovanni, Gabriel Oanca, Marco Orlando, Marina Lotti, Johan Åqvist, Marco Mangiagalli   +5 more
wiley   +1 more source

Unsaturated Fatty Acids in Antarctic Bacteria

Research Journal of Microbiology, 2016
Unsaturated Fatty Acids (UFAs) play a vital role in membrane lipids fluidity which maintains its structural integrity and also, are nutritionally and pharmaceutically important. Fish and vegetable oils are the major sources of the so-called essential fatty acids required for normal physiological activities of the body.
Garba, Lawal, Latip, Wahhida, Mohamad Ali, Mohd Shukuri, Oslan, Siti Nurbaya, Raja Abdul Rahman, Raja Noor Zaliha   +4 more
openaire   +1 more source

Bony fish genomes: Status and gaps

Journal of Fish Biology, EarlyView.
Abstract Bony fish constitute an exceptionally species‐rich group of aquatic vertebrates, comprising more than 95% of all living fish. The adaptive processes on the diversity of environments they inhabit make them a highly diverse group from taxonomic, morphological and evolutionary standpoints.
Noelia Pérez‐Pereira, Carmen Bouza, Paulino Martínez, Diego Robledo   +3 more
wiley   +1 more source

Biogeographic survey of soil bacterial communities across Antarctica

Microbiome
Background Antarctica and its unique biodiversity are increasingly at risk from the effects of global climate change and other human influences. A significant recent element underpinning strategies for Antarctic conservation has been the development of a
Gilda Varliero, Pedro H. Lebre, Byron Adams, Steven L. Chown, Peter Convey, Paul G. Dennis, Dandan Fan, Belinda Ferrari, Beat Frey, Ian D. Hogg, David W. Hopkins, Weidong Kong, Thulani Makhalanyane, Gwynneth Matcher, Kevin K. Newsham, Mark I. Stevens, Katherine V. Weigh, Don A. Cowan   +17 more
doaj   +1 more source

Novel Hydrurus species (Chrysophyceae) and their adaptations to high‐altitude European and Arctic snowfields

Journal of Phycology, EarlyView.
Abstract Colored snow caused by green algae (Chlorophyceae) is well known, but melting snowpacks can also harbor golden‐brown blooms consisting of Chrysophyceae. We collected 14 samples of cryoflora in the Austrian and Swiss Alps, the High Tatras in Slovakia, and in Arctic Svalbard. Eight laboratory unicellular flagellated strains were established from
Lenka Procházková, Robert A. Andersen, Thomas Leya, Tomáš Řezanka, Martin Lukeš, Linda Nedbalová, Daniel Remias   +6 more
wiley   +1 more source

Endophytic Bacterial Biofilm-Formers Associated with Antarctic Vascular Plants

Microorganisms
Deschampsia antarctica and Colobantus quitensis are the only two vascular plants colonized on the Antarctic continent, which is usually exposed to extreme environments.
Olga Iungin, Yevheniia Prekrasna-Kviatkovska, Oleksandr Kalinichenko, Olena Moshynets, Geert Potters, Marina Sidorenko, Yaroslav Savchuk, Saulius Mickevičius   +7 more
doaj   +1 more source

Proteorhodopsin Phototrophy in Antarctic Coastal Waters

mSphere, 2021
Proteorhodopsin-bearing microorganisms in the Southern Ocean have been overlooked since their discovery in 2000. The present study identify taxonomy and quantify the relative abundance of proteorhodopsin-bearing bacteria and proteorhodopsin gene ...
Jerónimo Cifuentes-Anticevic, María E. Alcamán-Arias, Tomás Alarcón-Schumacher, Javier Tamayo-Leiva, Carlos Pedrós-Alió, Laura Farías, Beatriz Díez   +6 more
doaj   +1 more source