Bacterial cells that normally colonize our guts can distinguish themselves from other bacterial species using what's traditionally considered their enemy -- a virus. Researchers report April 16, 2019, in the journal Cell Reports that some bacteria use viruses that have infected them (i.e., phages) for self-recognition and thereby show greater fitness, repelling competitors that lack this adaptation.
In a new study, published in Cell Reports, researchers at the Azrieli Faculty of Medicine of Bar-Ilan University found that progesterone regulates the microbial composition during pregnancy in a way that may facilitate appropriate transmission of beneficial species to the newborn.
Researchers from UNIGE and Lyon have examined the sediments in the Dead Sea. The geologists drilled a 400-metre hole before analysing each layer of sediment and the traces of a strategy that enables bacteria to survive by feeding on the remains of other organisms. This discovery will further our understanding of how life can develop even in the most severe conditions. It also provides vital research leads for detecting life on other planets.
A team of investigators has discovered a new, more powerful variant on an antimicrobial resistance gene common among Staphylococcus species. The gene protects the bacteria from an antiseptic compound widely used in healthcare. The team showed that the newly discovered gene occurs in a highly virulent and multi-resistant clone of Staphylococcus epidermidis, found in healthcare settings worldwide.
In a bid to boost the arsenal available against antibiotic resistance, scientists from the Institut Pasteur, the CNRS and the Universidad Politécnica de Madrid successfully programmed a bacterial genetic structure to make it capable of specifically killing multiple antibiotic-resistant bacteria without also destroying bacteria that are beneficial to the body. Unlike other approaches under development, this novel tool is associated with a minimal rate of emergence of new resistance. The results were published in the journal Nature Biotechnology on April 15, 2019.
Scientists from the University of Groningen have succeeded in incorporating a light-controlled switch into a molecule used by bacteria for quorum sensing -- a process by which bacteria communicate and subsequently control different cellular processes. With the molecule described, it is possible to either inhibit or stimulate communication, making it a useful tool for research into bacterial communication and its influence on different genetic pathways. The results were published on April 15 in the journal Chem.
in a paper published today in the Journal of the American Chemical Society University of Utah professor Valeria Molinero and her colleagues show how key proteins produced in bacteria and insects can either promote or inhibit the formation of ice, based on their length and their ability to team up to form large ice-binding surfaces. The results have wide application, particularly in understanding precipitation in clouds.
A study published in Nature Communications revealed that the bacteria present in the water overlying dozens of coral reefs changed dramatically during the night, and then returned to the same daytime community as observed the morning before. Further, as if these communities were all privy to the same schedule, these changes were synchronized across reefs separated by hundreds of miles.
Like humans and animals, plants defend themselves against pathogens with the help of their immune system. But how do they activate their cellular defenses? Researchers at the Technical University of Munich (TUM) have now discovered that receptors in plant cells identify bacteria through simple molecular building blocks.
Research that reveals what lies at the bottom of the deepest part of the ocean -- the Mariana Trench. Until now, scientists knew more about Mars than the deepest part of the ocean. But an expedition to collect samples of the microbial population at the deepest part of the Mariana Trench (some 11,000 meters down) has revealed a new 'oil-eating' bacteria.