Forum for Science, Industry and Business

Sponsored by:     3M 
Search our Site:

 

Marine scientists from Warnemünde succeed in deciphering the microbial world of the Baltic Sea

19.09.2011
….and prove that bacteria do not follow the textbook rules describing the salinity/ diversity relationship of aquatic animals and plants

….and discover the apparently most abundant organism of the Baltic Sea – a bacterium unknown until now.

In a comprehensive measuring campaign, the microbiologists Daniel Herlemann, Matthias Labrenz and Klaus Jürgens, from the Leibniz Institute for Baltic Sea Research in Warnemünde, together with Swedish colleagues have succeeded in sampling microorganisms from the entire Baltic Sea, from the southwestern marine Skagerrag to the northern freshwaters of the Bothnian Bay. The respective bacterial communities were analyzed by means of state-of-the-art "high-throughput sequencing technologies." Thus, the Baltic Sea is the first sea in which all of the microbial inhabitants have been completely inventoried.

The results, which were published very recently, are astonishing: unlike the Baltic Sea's fauna and flora, its bacteria are unimpressed by the varying salinity that prevails in the Baltic. Indeed, while many organisms avoid the intermediate salinities (between freshwater and saltwater) that are characteristic of the central Baltic—which explains the minimal diversity under brackish water conditions—bacteria clearly differ in that under these conditions they show a constant species diversity.

Similarly, although typical marine or limnic bacterial assemblages become less diverse beyond the fully marine or limnic margins of the Baltic Sea, bacterial diversity remains high in the brackish water of the Baltic Proper because of the presence of species adapted to these conditions.

Among these, one bacterium was discovered that seems to thrive extraordinarily well in the Baltic Proper: this remarkably abundant organism belongs to the group of Verrucomicrobia, which was previously mainly found in lakes and soils. The function of this newly discovered and highly abundant bacterium is, at the moment, obscure. Moreover, in addition to the lack of cultivated representatives, specific sequences of the closest related isolate of the Verrucomicrobia group and those of the newly discovered organism differ by 12%.

The results support the notion that bacteria are well-equipped to cope with the challenging transitional area between freshwater and saltwater in the Baltic Sea and that, in contrast to higher organisms, there is no decline in their number of species under these conditions. Thus, the rapid and flexible adaptability of bacteria enables them to occupy ecological niches to which higher organisms have only limited access.

The results were published in the article: “Transitions in bacterial communities along the 2000 km salinity gradient of the Baltic Sea” Daniel PR Herlemann, Matthias Labrenz, Klaus Jürgens, Stefan Bertilsson, Joanna J Waniek and Anders F Andersson. The ISME Journal, (published online 7 April 2011) | doi:10.1038/ismej.2011.41

Contact:
Dr. Daniel Herlemann, +49 381 / 5197 209
PD Dr. Matthias Labrenz, +49 381 / 5197 378
Prof. Dr. Klaus Jürgens, +49 381 / 5197 250
Department of Biological Oceanography, Leibniz Institute for Baltic Sea Research Warnemünde
or
Dr. Barbara Hentzsch, +49 381 / 5197 102
Directorate / Public Relation, Leibniz Institute for Baltic Sea Research Warnemünde

The IOW is member of the Leibniz Association, a network of 87 scientifically, legally and economically independent research institutes and scientific service facilities. Leibniz Institutes perform strategic-and thematically-oriented research and offer scientific services of national significance while striving to provide scientific solutions to major social challenges.

The 16,800 employees of the Leibniz Institutes include 7,800 academics, with 3,300 junior scientists. One indication of the Leibniz Institutes' strong competitiveness and excellence is the 330 million Euros allocated to them from third-party funds. The total budget of all Leibniz Institutes amounts to more than 1.4 billion Euros.

Leibniz Institutes contribute to clusters of excellence in fields such as mathematics, optic technologies, materials research, medicine, climate and environmental research, and bio- and nanotechnology as well as the humanities, economics, and social sciences. They foster close co-operations with universities, industry, and other research institutes, both in Germany and abroad. The Leibniz Association has developed a comprehensive system of quality management in which, at regular intervals, independent experts assess every institute as part of the Association's unique peer review evaluation process.

Dr. Barbara Hentzsch | idw
Further information:
http://www.leibniz-association.eu
http://www.io-warnemuende.de

More articles from Life Sciences:

nachricht Complete skin regeneration system of fish unraveled
24.04.2018 | Tokyo Institute of Technology

nachricht Scientists generate an atlas of the human genome using stem cells
24.04.2018 | The Hebrew University of Jerusalem

All articles from Life Sciences >>>

The most recent press releases about innovation >>>

Die letzten 5 Focus-News des innovations-reports im Überblick:

Im Focus: BAM@Hannover Messe: innovative 3D printing method for space flight

At the Hannover Messe 2018, the Bundesanstalt für Materialforschung und-prüfung (BAM) will show how, in the future, astronauts could produce their own tools or spare parts in zero gravity using 3D printing. This will reduce, weight and transport costs for space missions. Visitors can experience the innovative additive manufacturing process live at the fair.

Powder-based additive manufacturing in zero gravity is the name of the project in which a component is produced by applying metallic powder layers and then...

Im Focus: Molecules Brilliantly Illuminated

Physicists at the Laboratory for Attosecond Physics, which is jointly run by Ludwig-Maximilians-Universität and the Max Planck Institute of Quantum Optics, have developed a high-power laser system that generates ultrashort pulses of light covering a large share of the mid-infrared spectrum. The researchers envisage a wide range of applications for the technology – in the early diagnosis of cancer, for instance.

Molecules are the building blocks of life. Like all other organisms, we are made of them. They control our biorhythm, and they can also reflect our state of...

Im Focus: Spider silk key to new bone-fixing composite

University of Connecticut researchers have created a biodegradable composite made of silk fibers that can be used to repair broken load-bearing bones without the complications sometimes presented by other materials.

Repairing major load-bearing bones such as those in the leg can be a long and uncomfortable process.

Im Focus: Writing and deleting magnets with lasers

Study published in the journal ACS Applied Materials & Interfaces is the outcome of an international effort that included teams from Dresden and Berlin in Germany, and the US.

Scientists at the Helmholtz-Zentrum Dresden-Rossendorf (HZDR) together with colleagues from the Helmholtz-Zentrum Berlin (HZB) and the University of Virginia...

Im Focus: Gamma-ray flashes from plasma filaments

Novel highly efficient and brilliant gamma-ray source: Based on model calculations, physicists of the Max PIanck Institute for Nuclear Physics in Heidelberg propose a novel method for an efficient high-brilliance gamma-ray source. A giant collimated gamma-ray pulse is generated from the interaction of a dense ultra-relativistic electron beam with a thin solid conductor. Energetic gamma-rays are copiously produced as the electron beam splits into filaments while propagating across the conductor. The resulting gamma-ray energy and flux enable novel experiments in nuclear and fundamental physics.

The typical wavelength of light interacting with an object of the microcosm scales with the size of this object. For atoms, this ranges from visible light to...

All Focus news of the innovation-report >>>

Anzeige

Anzeige

VideoLinks
Industry & Economy
Event News

Invitation to the upcoming "Current Topics in Bioinformatics: Big Data in Genomics and Medicine"

13.04.2018 | Event News

Unique scope of UV LED technologies and applications presented in Berlin: ICULTA-2018

12.04.2018 | Event News

IWOLIA: A conference bringing together German Industrie 4.0 and French Industrie du Futur

09.04.2018 | Event News

 
Latest News

Complete skin regeneration system of fish unraveled

24.04.2018 | Life Sciences

Scientists create innovative new 'green' concrete using graphene

24.04.2018 | Materials Sciences

BAM@Hannover Messe: innovative 3D printing method for space flight

24.04.2018 | Trade Fair News

VideoLinks
Science & Research
Overview of more VideoLinks >>>