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Max-Planck-Gesellschaft


Survival strategies in nature

Scientists at Max Planck Institute for Chemical Ecology gained new insights into chemical signaling within plants after herbivore attack, highlighting the value of genetically modifying plants to study complex ecological interactions. Transgenic Nicotiana attenuata plants were found to attract novel herbivore species despite being defe...

SourceMax-Planck-Gesellschaft·JournalScience·DateJul 5, 2004

Nanoscale contact optimizes adhesion

Researchers discovered an optimal shape of nanoscale contact surface that enhances adhesion strength, which becomes insensitive to small variations at a critical size scale of around 100 nanometers. This finding suggests combining size reduction and shape optimization for robust and reliable adhesion.

SourceMax-Planck-Gesellschaft·JournalProceedings of the National Academy of Sciences·DateMay 25, 2004

When bosons become fermions

Researchers at Max-Planck-Institute for Quantum Optics and Johannes Gutenberg-University of Mainz successfully fermionize a gas of bosonic atoms, creating a Tonks-Girardeau gas. The resulting state exhibits unique properties that blur the distinction between bosonic and fermionic behavior.

SourceMax-Planck-Gesellschaft·JournalNature·DateMay 19, 2004

Cannabinoids spell relief in colon inflammation

Max Planck researchers discovered that the body's own cannabinoid receptor acts as a protective system against colon inflammation. The study found that mutant mice lacking this receptor are more prone to inflammatory responses, but treatment with cannabinoids can alleviate inflammation in wild-type animals.

SourceMax-Planck-Gesellschaft·JournalJournal of Clinical Investigation·DateMay 7, 2004

Too good eyes for living below ground

Researchers found that African mole-rat eyes have anatomically well-developed retinas and a surprisingly high proportion of cones, which is unusual for blind animals. The density of rods, used for night vision, is also lower than expected in subterranean mammals.

SourceMax-Planck-Gesellschaft·JournalEuropean Journal of Neuroscience·DateApr 5, 2004

Chatty finches

Researchers found FoxP2 gene expressed in brain regions critical for song learning, similar to human brain. The study suggests that variations in the FoxP2 gene may have contributed to the development of language in humans.

SourceMax-Planck-Gesellschaft·JournalNeuroscience·DateMar 31, 2004

The small and the beautiful

Scientists capture real-time video-clips of signal transmission in living cells using Quantum Dots, revealing new insights into cellular processes. The breakthrough is expected to speed up the development of new cancer-curing drugs.

SourceMax-Planck-Gesellschaft·JournalNature Biotechnology·DateMar 12, 2004

Are you slow in coordinating your thoughts?

Researchers found a speed limit to neural network synchronization, set by network connectivity. The analysis revealed that even strong interactions cannot achieve faster synchronization than an upper limit. This could severely limit the speed of information processing in the brain.

SourceMax-Planck-Gesellschaft·JournalPhysical Review Letters·DateMar 8, 2004

The fastest stopwatch in the world

Researchers create ultrafast stopwatch capable of measuring atomic processes with an accuracy of less than 100 attoseconds. The device uses a combination of X-ray flashes and laser light pulses to detect electrons emitted by atoms, providing insights into chemical reactions and material synthesis.

SourceMax-Planck-Gesellschaft·JournalNature·DateFeb 27, 2004

Molecular mechanisms that trigger flowering in spring

The CONSTANS protein plays a central role in triggering flowering in plants, accumulating in the nuclei of cells under long days but not in short days. Researchers at the Max Planck Institute have discovered that specific photoreceptors detect blue and far-red light to stabilize CONSTANS protein, allowing it to activate flowering genes.

SourceMax-Planck-Gesellschaft·JournalScience·DateFeb 13, 2004

A killer microbe as a living antibiotic

Researchers have unraveled the complete genome sequence of Bdellovibrio bacteriovorus, a predatory bacterium that can degrade complex biopolymers in other bacteria. The study may lead to novel anti-microbial substances and the development of a 'living antibiotic' as a potential therapeutic agent.

SourceMax-Planck-Gesellschaft·JournalScience·DateJan 29, 2004

Kyoto and beyond

Global per capita greenhouse gas emissions need to be reduced to a small fraction of present levels within the next hundred years. A gradual transition to an emission-free economy is possible at an acceptable price, with significant reductions in emissions necessary beyond the Kyoto horizon.

SourceMax-Planck-Gesellschaft·JournalScience·DateDec 12, 2003

A new hope for heavy metal contaminated soils

Researchers at Max Planck Institute and Leibniz Institute have identified key metal homeostasis proteins in a hyperaccumulator plant species, paving the way for cost-effective cleanup technologies. These proteins play a crucial role in detoxifying metals in roots and shoots, allowing plants to accumulate heavy metals in their leaves wh...

SourceMax-Planck-Gesellschaft·JournalThe Plant Journal·DateDec 4, 2003

Watching social behaviour evolve

Myxococcus xanthus bacteria evolved the ability to swarm socially on soft agar without filamentous appendages (pili), relying on an enhanced adhesive matrix composed of fibrils. This cooperative behavior depends on individual cells contributing to a public commons, enabling efficient swarming and cooperation.

SourceMax-Planck-Gesellschaft·JournalNature·DateSep 5, 2003

MicroRNAs - Tiny molecules shape up plants

Researchers have discovered that microRNAs play a crucial role in controlling plant growth and development by regulating cell division and leaf shape. The study found that a specific microRNA called "Jaw" targets messenger RNAs involved in preventing excessive cell division, leading to abnormal leaf shapes.

SourceMax-Planck-Gesellschaft·JournalNature·DateAug 22, 2003

How old mice get bright again

Max Planck researchers found that reducing SK3 channel production in the hippocampus of aged mice prevented learning and memory deficits. The study provides new insight into the mechanisms of age-related cognitive decline and suggests a potential therapeutic approach.

SourceMax-Planck-Gesellschaft·JournalNature Neuroscience·DateJul 31, 2003

Counting the molecules that pull cells apart

Researchers at Max Planck Institute for Cell Biology and Genetics in Dresden and EMBL in Heidelberg have counted the number of proteins that help an egg cell divide. They found that there are more motors pulling on one side, which can pull the centrosome off-center, leading to proper development of the embryo.

SourceMax-Planck-Gesellschaft·JournalScience·DateJul 25, 2003

A two-lane road to ruin

Granzyme A, a double-headed protease, is assembled into a dimer with identical catalytic domains connected by a covalent disulfide bond. This unique configuration enables the enzyme to recognize specific sequences and activate cell death machinery in tumor cells and virally infected cells.

SourceMax-Planck-Gesellschaft·JournalNature Structural & Molecular Biology·DateJul 4, 2003

Pulsating chemistry

Scientists at Fritz-Haber Institute find mechanical oscillations in catalytic foil during chemical reactions, leading to precise measurement of heat created. Mathematical models and computer simulations reveal delicate interplay between thermo-chemistry and thermo-mechanics.

SourceMax-Planck-Gesellschaft·JournalScience·DateJun 19, 2003

The mechanical switch in the ear

Sensory hair cells convert mechanical energy into electrical signals through transduction channels. A new report identifies NompC as a vertebrate homologue of a previously known channel, required for mechanosensation in zebrafish and possibly other animals.

SourceMax-Planck-Gesellschaft·JournalScience·DateJun 17, 2003

An eye for scent marks

Research suggests that rodents' UV vision helps them detect fresh urine marks, improving localization and social organization. This adaptation may have driven the retention of UV vision in these animals.

SourceMax-Planck-Gesellschaft·JournalInvestigative Ophthalmology & Visual Science·DateJun 10, 2003

Nature designs hard and tough materials at the nanoscale

Researchers found that there exists a critical nanometer size where mineral particles in biocomposites become insensitive to flaws, maintaining strength equivalent to a perfect crystal despite inherent defects. This phenomenon suggests that the engineering concept of stress concentration at flaws is no longer valid for nanoscale design.

SourceMax-Planck-Gesellschaft·JournalProceedings of the National Academy of Sciences·DateMay 14, 2003

Chaos in the heart

A team of scientists has discovered that chaotic wave patterns in the heart's electrical pulses can be controlled and potentially terminated using a weak periodic modulation. This discovery could lead to new methods for treating cardiac fibrillation, a life-threatening condition.

SourceMax-Planck-Gesellschaft·JournalScience·DateJan 31, 2003

Evolving slower gets you the bigger piece of the pie

A recent study by Max Planck Institute researchers found that in mutualistic interactions between species, the faster-evolving species may actually lose out. The slow-moving species can gain an advantage when both are generous and coordinate their strategies, whereas quickly evolving species tend to adapt to slow evolvers' needs.

SourceMax-Planck-Gesellschaft·JournalProceedings of the National Academy of Sciences·DateJan 17, 2003

Dancing molecules on the make

Researchers at Max Planck Institute for Solid State Research successfully observed the formation and dynamics of coordination compounds on a copper surface. They directly imaged single molecules and monitored their movements, revealing how rotating molecules act as dynamic atom traps for individual Cu atoms.

SourceMax-Planck-Gesellschaft·JournalJournal of the American Chemical Society·DateDec 16, 2002

Black holes in a double pack

Astronomers detected two active black holes at the center of galaxy NGC 6240 using NASA's Chandra X-ray Observatory. The binary black hole system will eventually merge, producing massive gravitational waves detectable by LISA.

SourceMax-Planck-Gesellschaft·JournalThe Astrophysical Journal Letters·DateNov 21, 2002

Health care rationing in Germany

A study analyzing patient deaths and survivors in German hospitals found that nearly 40% of total expenditures went towards the care of just 10% of patients. The most expensive group were young female cancer patients, while old and terminally ill patients accounted for the lowest costs.

SourceMax-Planck-Gesellschaft·JournalSocial Science & Medicine·DateNov 11, 2002

Smog over the Mediterranean

The MINOS study found high levels of air pollution over the Mediterranean Sea, originating from both western and eastern Europe, as well as South Asia. The pollution transport follows prevailing winds and affects ecosystems and human health, while aerosols alter solar radiation absorption and climate patterns.

SourceMax-Planck-Gesellschaft·JournalScience·DateOct 25, 2002

Superconducting lithium

Researchers establish superconductivity in lithium at pressures greater than 30 GPa, with critical temperatures ranging from 9 K to 16 K. This finding contradicts theory and sparks interest in searching for high-temperature superconductivity in light element compounds.

SourceMax-Planck-Gesellschaft·JournalScience·DateOct 23, 2002

Nanocylinders open way to polymer electronics

Researchers have successfully synthesized clusters of fluorine-containing dendritic polymers that organize into tiny supramolecular cylinders. These nanocylinders display promising optoelectronic properties and can be used as donor- or acceptor groups, enabling the creation of novel electronic devices.

SourceMax-Planck-Gesellschaft·JournalNature·DateOct 2, 2002