Results 191 to 200 of about 52,993 (223)

Expansion of the Marine Archaea

Science, 2001
One group of the Archaea (ancient bacteria) began life inhabiting the hyperthermal vents of the oceans but then suddenly expanded to more temperate ocean niches during the Cretaceous. In a Perspective, [Smith][1] discusses new work ([ Kuypers et al .][2]) pinpointing the exact time of this archaeal expansion within the mid-Cretaceous, and the changing ...
openaire   +2 more sources

Novel D-glutamate catabolic pathway in marine Proteobacteria and halophilic archaea

The ISME Journal, 2023
Abstract D-glutamate (D-Glu) is an essential component of bacterial peptidoglycans, representing an important, yet overlooked, pool of organic matter in global oceans. However, little is known on D-Glu catabolism by marine microorganisms.
Yang Yu, Peng Wang, Hai-Yan Cao, Zhao-Jie Teng, Yanping Zhu, Min Wang, Andrew McMinn, Yin Chen, Hua Xiang, Yu-Zhong Zhang, Xiu-Lan Chen, Yu-Qiang Zhang   +11 more
openaire   +2 more sources

Proteorhodopsin lateral gene transfer between marine planktonic Bacteria and Archaea

Nature, 2006
Planktonic Bacteria, Archaea and Eukarya reside and compete in the ocean's photic zone under the pervasive influence of light. Bacteria in this environment were recently shown to contain photoproteins called proteorhodopsins, thought to contribute to cellular energy metabolism by catalysing light-driven proton translocation across the cell membrane. So
Frigaard, Niels-Ulrik, Martinez, Asuncion, Mincer, Tracy J, DeLong, Edward F   +3 more
openaire   +3 more sources

Marine Bacteria and Archaea: Diversity, Adaptations, and Culturability

2016
With an estimated total number of 6.6 × 1029 cells, Bacteria and Archaea in marine waters and sediments constitute a major fraction of global microbial biomass. Most marine bacterial communities are highly diverse and individual samples can comprise over 20,000 species.
Jörg Overmann, Cendrella Lepleux
openaire   +1 more source

Microdiversity of uncultured marine prokaryotes: the SAR11 cluster and the marine Archaea of Group I

Molecular Ecology, 2000
AbstractThe SAR11 cluster and the Group I of marine Archaea represent probably the best two examples of uncultured marine prokaryotes of widespread occurrence. To study their microdiversity and distribution, a total of 81 and 48 clones, respectively, were sequenced from Mediterranean and Antarctic waters at different locations and depths.
J, García-Martínez, F, Rodríguez-Valera   +1 more
openaire   +2 more sources

Massive Expansion of Marine Archaea During a Mid-Cretaceous Oceanic Anoxic Event

Science, 2001
Biogeochemical and stable carbon isotopic analysis of black-shale sequences deposited during an Albian oceanic anoxic event (∼112 million years ago) indicate that up to 80 weight percent of sedimentary organic carbon is derived from marine, nonthermophilic archaea.
Kuypers, MMM, Blokker, P, Erbacher, J, Kinkel, H, Pancost, RD, Schouten, S, Damsté, Jaap S Sinninghe   +6 more
openaire   +4 more sources

Diversity and mode of transmission of ammonia‐oxidizing archaea in marine sponges

Environmental Microbiology, 2008
Summary The model marine crenarchaeote ‘ Cenarchaeum symbiosum ’ is until now the only ammonia‐oxidizing archaeon known from a marine sponge. Here, phylogenetic analyses based on the 16S rRNA and ammonia monooxygenase subunit A ( amoA )
Steger, Doris, Ettinger-Epstein, Piers, Whalan, Stephen, Hentschel, Ute, de Nys, Rocky, Wagner, Michael, Taylor, Michael W.   +6 more
openaire   +4 more sources

The Role of Marine Anaerobic Bacteria and Archaea in Bioenergy Production

2013
The development of products from marine bioresources is gaining importance in the biotechnology sector. The global market for Marine Biotechnology products and processes was, in 2010, estimated at 2.8 billion with a cumulative annual growth rate of 510% (Børresen et al., Marine biotechnology: a new vision and strategy for Europe.
Cavaleiro, A. J., Abreu, A. A., Sousa, Diana Zita Machado, Pereira, M. A., Alves, M. M.   +4 more
openaire   +2 more sources

Feeding by heterotrophic flagellates on marine archaea

Regional Studies in Marine Science, 2022
Moo Joon Lee, Yeong Du Yoo, Kyeong Ah Seong, Hee Yeon Yang, Yi Gu Kang, Sung-Keun Rhee, Jong-Geol Kim, Gyu Gil Lee, Sung Ki Lee, Woongghi Shin, Jong Seong Ryu   +10 more
openaire   +1 more source

Ammonia-Oxidizing Archaea in Marine Cold-Water Sponges

2011
Thaumarchaea (Archaea) kommen in vielen terrestrischen und marinen Lebensräumen vor und sind oftmals mit marinen Schwämmen assoziiert. Basierend auf Metagenom- und Kultivierungsstudien hat sich gezeigt, dass viele (wenn nicht sogar alle) Thaumarchaea die Fähigkeit besitzen, mittels dem Enzym Ammoniummonooxygenase (AMO), Ammonium zu oxidieren. In dieser
openaire   +1 more source