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Helmholtz Association


Cause of mussel poisoning identified

Researchers from the Alfred Wegener Institute have identified a tiny algal species, Azadinium spinosum, as the producer of azaspiracid toxin, causing severe poisoning in human consumers of mussels. The discovery provides an effective early warning system for mussel farms.

SourceHelmholtz Association·JournalEuropean Journal of Phycology·DateMar 24, 2009

When intestinal bacteria go surfing

Researchers at HZI have identified a molecular signal pathway that enables E. coli bacteria to adhere to host cells and form pedestals, allowing them to reproduce on the cell surface without being flushed from the intestine. The discovery sheds light on how pathogenic bacteria develop complex processes in the host.

SourceHelmholtz Association·JournalCell Host & Microbe·DateMar 19, 2009

Big and small dents

The GOCE satellite will study global ocean currents, ocean topography, and the structure of the Earth's crust with unprecedented precision. The satellite's high-resolution gravity mapping will enhance our understanding of climate change.

Brothers in arms

A joint study from Helmholtz-Centre and immunologists found that flu infection facilitates and intensifies pneumonia bacteria infections. Researchers discovered that lack of immune cells does not cause increased susceptibility to superinfections.

SourceHelmholtz Association·JournalPLOS ONE·DateMar 17, 2009

A sustainable water supply for Brasilia

The IWAS Àgua DF project aims to develop a water management concept for Brasilia, addressing the city's growing population and climate change challenges. By integrating technical solutions with improved policy approaches, the project seeks to ensure a sustainable water supply for millions of inhabitants.

When acute hepatitis develops into chronic hepatitis

A study by Helmholtz Center researchers reveals that acute hepatitis B infection triggers chronic liver disease through altered T helper cell function. The team identified specific genes and immune mechanisms involved in the development of chronic hepatitis B, shedding light on potential diagnostic markers and treatment options.

SourceHelmholtz Association·JournalHepatology·DateFeb 16, 2009

Cardiac fibrillation of the climate

Scientists analyze Lake Kråkenes sediments to detect short-term climate fluctuations. They attribute these changes to glacial melt runoff driven by the Gulf Stream's variability. The findings reveal a period of high-frequency climate oscillations during the Younger Dryas cold period.

SourceHelmholtz Association·JournalNature Geoscience·DateFeb 15, 2009

European fusion computer comes to Julich

The new supercomputer will help researchers better understand complex plasma effects in the ITER fusion reactor through advanced computer simulations. The HPC-FF system will be optimized for European fusion scientists' simulation programs and will provide 101 teraflop/s computing power.

The continents as a heat blanket

Scientists from GFZ German Research Centre for Geosciences developed a numerical model to calculate future continent positions. The continents function as a thermal blanket, causing heat accumulation and super-continent break-up., A self-regulating system develops, resulting in reorganization of mantle convection.

SourceHelmholtz Association·JournalPhysics of The Earth and Planetary Interiors·DateJan 22, 2009

On the trail of polar lows

A team of scientists has analyzed global atmospheric data for the past 60 years to determine the frequency of polar lows. They found that there is no long-term trend in the frequency of these storms, contradicting previous assumptions about their connection to climate change.

SourceHelmholtz Association·JournalGeophysical Research Letters·DateDec 12, 2008

Dormant stem cells for emergencies

Researchers have identified a group of dormant stem cells in mouse bone marrow that divide only five times throughout their lifespan, equivalent to one cell division in 18 years. These 'sleeping' stem cells can rapidly self-renew and replace damaged bone marrow in emergency situations.

SourceHelmholtz Association·JournalCell·DateDec 4, 2008

11,000 alien species invade Europe

A comprehensive overview of alien species in Europe reveals over 11,000 documented species, with 15% causing economic damages and 15% harming biological diversity. The DAISIE project provides a valuable tool for managing biological invasions in Europe, enabling early detection, eradication, and control methods.

Acrylic glass made of sugar

Scientists have discovered an enzyme that can convert sugars into a precursor of acrylic glass, a plastic used in various applications. This breakthrough could make the production of acrylic glass more environmentally friendly and potentially increase its demand in the coming years.

SourceHelmholtz Association·JournalMicrobiology·DateNov 13, 2008

Extreme weather postpones the flowering time of plants

A study by the University of Bayreuth and Helmholtz-Centre for Environmental Research found that extreme weather events like droughts and heavy rains can postpone or accelerate plant flowering times in Central Europe. On average, a one-month drought postponed the time of flowering by 4 days, equivalent to a decade of global warming.

SourceHelmholtz Association·JournalGlobal Change Biology·DateNov 5, 2008

Biosynthetics production with detours

Researchers at Helmholtz-Zentrum für Infektionsforschung used computer models to identify genetic changes that increase biosynthetics production in Pseudomonas putida bacteria. The study, published in PLOS Computational Biology, aims to develop targeted methods for producing natural materials efficiently.

SourceHelmholtz Association·JournalPLOS Computational Biology·DateOct 31, 2008

Research around the North Pole

The German research vessel Polarstern has completed its Arctic expedition, collecting data on the geology of the Arctic area and the development of ocean currents. Researchers discovered large sliding masses beneath the seafloor, indicating significant sediment relocations in the region.

Repair in the developing heart

Researchers demonstrate that female mice with damaged heart cells can still fully function at birth thanks to the proliferation of healthy cells. However, some mice develop heart problems later in life, highlighting the need for further investigation into the gene's influence on adult hearts.

SourceHelmholtz Association·JournalDevelopmental Cell·DateOct 15, 2008

Fires regenerate African grassland

Research in Etosha National Park found periodic fires play a key role in regeneration, breaking up the old grass layer to create opportunities for regrowth. This discovery is significant for managing semi-arid nature reserves where fires are essential for renewing the grass canopy.

SourceHelmholtz Association·JournalJournal of Ecology·DateSep 19, 2008

New mechanism for cardiac arrhythmia discovered

Researchers have discovered a molecular mechanism underlying cardiac arrhythmia, revealing that a virus receptor plays a crucial role in regulating heart rhythm. The study found that the receptor is essential for normal heart function and its absence or dysfunction leads to arrhythmia.

SourceHelmholtz Association·JournalJournal of Experimental Medicine·DateSep 18, 2008

Cocaine: How addiction develops

Researchers have found that cocaine-induced synaptic plasticity plays a crucial role in addiction development. By selectively switching off specific protein components, scientists have been able to induce persistent addictive behavior in mice.

SourceHelmholtz Association·JournalNeuron·DateAug 21, 2008

Climate change threatens 1 in 5 plant species

Researchers from Helmholtz Centre for Environmental Research and Potsdam Institute for Climate Impact Research found that climate change may impact the distribution of European plant species. Under moderate climate change and limited land use changes, up to 11% of species could lose more than two-thirds of their current ranges.

SourceHelmholtz Association·JournalBiology Letters·DateAug 13, 2008

Tracking down abrupt climate changes

Researchers discovered an extreme cooling event 12,700 years ago in Western Europe, with sediments revealing a short-term shift in atmospheric circulation. The findings suggest the climate system is not fully understood, with many puzzles remaining to be solved.

SourceHelmholtz Association·JournalNature Geoscience·DateAug 1, 2008