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Categories: Biology: Microbiology, Environmental: Biodiversity
Published How a bacterium supports healing of chronic diabetic wounds
(via sciencedaily.com) Original source New research shows that a certain bug, Alcaligenes faecalis (A. faecalis), can facilitate healing of hard-to-treat wounds among people with diabetes. While there are many studies done on potentially harmful bacteria in wounds, the researchers discovered that A. faecalis, a bacterium found in many types of chronic wounds, actually boosts healing of diabetic wounds. The researchers found that the beneficial bacterium can promote skin cell movements that are essential for wound closure by inhibiting enzymes that are over-produced in people with diabetes.
Published How evolution tamed a deadly virus and why we should still worry
(via sciencedaily.com) Original source Over the last century, a once-deadly mosquito-borne virus has evolved so that it no longer sickens humans. New research shows that changes in the virus's ability to target human cells paralleled the decline in illness and death. The findings offer important lessons in virology that may help guide better preparedness for future outbreaks of other viral diseases.
Published Seven steps to achieving the right to clean indoor air post-pandemic
(via sciencedaily.com) Original source Seven lessons learned from the COVID-19 pandemic about ventilation's crucial role in preventing the spread of airborne pathogens has been set out in a new article.
Published New groups of methane-producing organisms in Yellowstone
(via sciencedaily.com) Original source The team verified that microbes found in Yellowstone National Park hot springs produce methane to grow.
Published Proof-of-concept study to find functional cure for HIV
(via sciencedaily.com) Original source Researchers conducted a breakthrough proof-of-concept study that found an HIV-like virus particle that could cease the need for lifelong medications.
Published How well does tree planting work in climate change fight? It depends
(via sciencedaily.com) Original source Using trees as a cost-effective tool against climate change is more complicated than simply planting large numbers of them, an international collaboration has shown.
Published Komodo dragons have iron-coated teeth to rip apart their prey
(via sciencedaily.com) Original source Scientists have discovered that the serrated edges of Komodo dragons' teeth are tipped with iron. The study gives new insight into how Komodo dragons keep their teeth razor-sharp and may provide clues to how dinosaurs like Tyrannosaurus rex killed and ate their prey.
Published Under pressure: How cells respond to physical stress
(via sciencedaily.com) Original source Cell membranes play a crucial role in maintaining the integrity and functionality of cells. However, the mechanisms by which they perform these roles are not yet fully understood. Scientists have used cryo-electron microscopy to observe how lipids and proteins at the plasma membrane interact and react to mechanical stress. This work shows that, depending on conditions, small membrane regions can stabilize various lipids to trigger specific cellular responses. These discoveries confirm the existence of well-organized lipid domains and begin to reveal the role they play in cell survival.
Published New study confirms mammal-to-mammal avian flu spread
(via sciencedaily.com) Original source A new study provides evidence that a spillover of avian influenza from birds to dairy cattle across several U.S. states has now led to mammal-to-mammal transmission -- between cows and from cows to cats and a raccoon.
Published Biosensor reveals gibberellin's critical role in legume nitrogen-fixation -- paving the way for self-fertilizing cereals
(via sciencedaily.com) Original source Researchers demonstrate that the plant hormone gibberellin (GA) is essential for the formation and maturation of nitrogen-fixing root nodules in legumes and can also increase nodule size.
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 A window of opportunity for climate change and biodiversity
(via sciencedaily.com) Original source World leaders must take advantage of a pivotal window of opportunity for forging a much-needed joined-up approach to tackle climate change and biodiversity loss, say scientists. Without this, work on tackling either crisis could inadvertently harm progress on the other.
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 Heat-sensitive trees move uphill seeking climate change respite
(via sciencedaily.com) Original source Trees in the Brazilian Atlantic Forest are migrating in search of more favourable temperatures with species in mountain forests moving uphill to escape rising heat caused by climate change.
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 Tropical plant species are as threatened by climate change as widely feared, study confirms
(via sciencedaily.com) Original source Biologists who set out to better understand the effects of climate change on plant species in tropical mountain regions found that even small variations in temperature and moisture can have massive impacts, threatening not only plants that live there, but also the ecosystems they support. A study based on labor-intensive fieldwork and analysis in tropical mountain regions shows that a warmer and drier climate will lead to massive losses of plant species.
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 Agriculture: Less productive yet more stable pastures
(via sciencedaily.com) Original source Climate change will have a considerable influence on the biodiversity and productivity of meadows and pastures. However, according to the results of the large-scale climate and land use experiment the extent of these changes depends on the land use. Grassland optimized for high yield responds much more sensitively to periods of drought than less intensively used meadows and pastures.
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.