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Categories: Biology: Microbiology, Space: Structures and Features
Published Dual action antibiotic could make bacterial resistance nearly impossible
(via sciencedaily.com) Original source New drug that disrupts two cellular targets would make it much harder for bacteria to evolve resistance.
Published Pioneering the cellular frontier
(via sciencedaily.com) Original source Scientists use a multimodal approach that combines hard X-ray computed tomography and X-ray fluorescence imaging to see the structure and chemical processes inside of a single cell.
Published New rapid method for determining virus infectivity
(via sciencedaily.com) Original source A new method that can rapidly determine whether a virus is infectious or non-infectious could revolutionize the response to future pandemics, researchers report.
Published Researchers explore the effects of stellar magnetism on potential habitability of exoplanets
(via sciencedaily.com) Original source A study extends the definition of a habitable zone for planets to include their star's magnetic field.
Published Astrophysicists uncover supermassive blackhole/dark matter connection in solving the 'final parsec problem'
(via sciencedaily.com) Original source Researchers have found a link between some of the largest and smallest objects in the cosmos: supermassive black holes and dark matter particles. Their new calculations reveal that pairs of supermassive black holes (SMBHs) can merge into a single larger black hole because of previously overlooked behavior of dark matter particles, proposing a solution to the longstanding 'final parsec problem' in astronomy.
Published Exposing dengue's invasion strategies
(via sciencedaily.com) Original source Mosquito-borne viral infections once confined to tropical regions are spreading. Dengue virus infects up to 400 million people worldwide each year according to World Health Organization estimates, and no available treatments exist for this disease. Now, research uncovered surprising strategies for how dengue and hundreds of other viruses replicate in their hosts, with the potential to aid in developing novel antiviral treatments and vaccines.
Published Scientists identify possible new transmission factor in hospital-acquired Klebsiella infections
(via sciencedaily.com) Original source Scientists have identified a critical factor that may contribute to the spread of hospital-acquired infections (HAIs), shedding light on why these infections are so difficult to combat. Their study reveals that the dangerous multidrug resistant (MDR) pathogen, Klebsiella, thrives under nutrient-deprived polymicrobial community conditions found in hospital environments.
Published Understanding how a red seaweed reduces methane emissions from cows
(via sciencedaily.com) Original source New research has implications for addressing a leading contributor to climate warming, methane.
Published Genome study informs restoration of American chestnut tree
(via sciencedaily.com) Original source Researchers use genomes to help restore the American chestnut population and adjust species breeding to the changing climate.
Published Life signs could survive near surfaces of Enceladus and Europa
(via sciencedaily.com) Original source Europa and Enceladus, icy moons of Jupiter and Saturn respectively, have evidence of oceans beneath their crusts. A NASA experiment suggests -- if these oceans support life -- signatures of that life in the form of organic molecules (like amino acids and nucleic acids) could survive just under the surface ice despite the harsh, ionizing radiation on these worlds. If robotic landers were to go to these moons to look for life signs, they would not have to dig very deep to find amino acids that have survived being altered or destroyed by radiation.
Published The rhythm led by plants is crucial for symbiosis with nutrient-providing bacteria
(via sciencedaily.com) Original source Recent research on Lotus japonicus, a model leguminous plant, has unveiled that the interaction between legume roots and rhizobia is characterized by periodic gene expression with a six-hour rhythm. This rhythmic gene expression influences the regions of the root susceptible to rhizobial infection and the distribution of nodules. It was also discovered that the plant hormone cytokinin is crucial for maintaining this gene expression rhythm.
Published Hundreds of new genome sequences fill gaps in the fruit fly tree of life
(via sciencedaily.com) Original source A multitude of new genomic sequence data fills major gaps in the fruit fly tree of life, researchers report.
Published Small animals acquire genes from bacteria that can produce antibiotics
(via sciencedaily.com) Original source A group of small, freshwater animals (bdelloid rotifers) protect themselves from infections using antibiotic recipes 'stolen' from bacteria, according to new research. This raises the potential that rotifers are producing novel antimicrobials that may be less toxic to animals, including humans, than those we develop from bacteria and fungi.
Published Another intermediate-mass black hole discovered at the center of our galaxy
(via sciencedaily.com) Original source So far, only about ten intermediate-mass black holes have been discovered in the entire universe. The newly identified black hole causes surrounding stars in a cluster to move in an unexpectedly orderly way.
Published Analyzing internal world models of humans, animals and AI
(via sciencedaily.com) Original source Researchers have developed a new formal description of internal world models, thereby enabling interdisciplinary research. Internal world models help to make predictions about new situations based on previous experience and to help find one's bearings. The new formalized view helps to compare world models of humans, animals and AI and to eliminate deficits.
Published Secrets behind viral precision
(via sciencedaily.com) Original source New research is shedding light on how viruses ensure their survival by precisely timing the release of new viruses. The discovery offers a new theoretical framework for understanding these dynamic biological phenomena.
Published Although tiny, peatland microorganisms have a big impact on climate
(via sciencedaily.com) Original source Polyphenols are generally toxic to microorganisms. In peatlands, scientists thought microorganisms avoided this toxicity by degrading polyphenols using an oxygen-dependent enzyme, and thus that low-oxygen conditions inhibit microbes' carbon cycling. However, a new study found that Arctic peatland microorganisms used alternative enzymes, with and without oxygen, to break down polyphenols. This suggests carbon stored in these ecosystems is more at risk than previously thought.
Published New antidote for cobra bites discovered
(via sciencedaily.com) Original source Cobras kill thousands of people a year worldwide and current antivenom treatment is expensive and does not effectively treat the necrosis of the flesh where the bite occurs. Using CRISPR technology, scientists have discovered a commonly available drug can stop the necrosis, potentially saving thousands of lives a year.
Published Ancient viruses fuel modern-day cancers
(via sciencedaily.com) Original source The human genome is filled with flecks of DNA left behind by viruses that infected primate ancestors tens of millions of years ago. Scientists used to think they were harmless, but new research shows that, when reawakened, they help cancer survive and thrive.
Published Reef pest feasts on 'sea sawdust'
(via sciencedaily.com) Original source Researchers have uncovered an under the sea phenomenon where coral-destroying crown-of-thorns starfish larvae have been feasting on blue-green algae bacteria known as 'sea sawdust'.