Humans may learn cooperation in kindergarten, but what about bacteria, whose behavior is preprogrammed by their DNA?
Some legume plants, which rely on beneficial soil bacteria called rhizobia that infect their roots and provide nitrogen, seem to promote cooperation by exacting a toll on those bacterial strains that dont hold up their end of the symbiotic bargain, according to a team of researchers at the University of California, Davis.
"In the case of soybeans, it appears that the plant applies sanctions against rhizobia that dont provide nitrogen. The plant does this by decreasing the oxygen supply to the rhizobia," said R. Ford Denison, a crop ecologist in the UC Davis Department of Agronomy and Range Science. "In this way, the host plant can control the environment of the symbiotic bacteria to favor the evolution of cooperation by ensuring that bacterial cheaters reproduce less."
Pat Bailey | EurekAlert!
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Staphylococcus aureus is a feared pathogen (MRSA, multi-resistant S. aureus) due to frequent resistances against many antibiotics, especially in hospital infections. Researchers at the Paul-Ehrlich-Institut have identified immunological processes that prevent a successful immune response directed against the pathogenic agent. The delivery of bacterial proteins with RNA adjuvant or messenger RNA (mRNA) into immune cells allows the re-direction of the immune response towards an active defense against S. aureus. This could be of significant importance for the development of an effective vaccine. PLOS Pathogens has published these research results online on 25 May 2017.
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Two-dimensional magnetic structures are regarded as a promising material for new types of data storage, since the magnetic properties of individual molecular building blocks can be investigated and modified. For the first time, researchers have now produced a wafer-thin ferrimagnet, in which molecules with different magnetic centers arrange themselves on a gold surface to form a checkerboard pattern. Scientists at the Swiss Nanoscience Institute at the University of Basel and the Paul Scherrer Institute published their findings in the journal Nature Communications.
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26.05.2017 | Life Sciences
26.05.2017 | Life Sciences
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