All articles by Linda Stewart – Page 17
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NewsMolecular net boosts the power of natural biopesticides
Scientists have uncovered a previously unknown mechanism that helps a widely used biological pesticide become more effective. The study reveals how bacteria produce ultra-strong protein fibers that form a molecular net, trapping infectious spores and toxins into a sticky film that enhances their ability to kill insect pests.
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NewsClimate change and emerging diseases pose challenges for physicians
Climate change is affecting the local ecology in Canada, contributing to emerging tick- and mosquito-borne diseases and infections in humans, argue scientists.
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NewsNew molecules can offer breakthrough in fight against antibiotic resistance
Researchers have shown how TriPcides can target the bacterium Staphylococcus aureus, including antibiotic‑resistant strains such as MRSA. The compounds disrupt the bacteria’s ability to cause infection and can also kill dormant bacterial cells, which are often difficult to treat with existing antibiotics.
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NewsAs day turns to night, blue-green algae undergo a molecular rewiring
Traditionally, biotechnology researchers have modified genes when engineering microbes. But researchers are using predictive phenomics to uncover additional layers of biological control, tracking how environmental changes reshape molecular activity inside a cell and how those shifts translate to function.
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NewsCorn diseases cost farmers $13.8 billion from 2020 to 2023
Corn diseases cost farmers an estimated $13.8 billion USD from 2020 to 2023, according to a new multiyear analysis led by plant disease specialists from across the United States and Ontario, Canada.
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NewsSweeping up dust to detect emerging viruses
Gathering dust from buildings may hold promise as a more efficient way to track viral outbreaks in indoor settings, according to a new study. After collecting nearly 30 vacuumed dust samples from different buildings, researchers simultaneously identified the presence of 54 distinct viruses.
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NewsOptical method concentrates microscopic targets for faster, more sensitive detection
Researchers have developed a light-driven technique that quickly amasses thousands of bacteria into a single spot, boosting detection speed and sensitivity. Their approach paves the way for earlier diagnosis of disease.
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NewsTiny ocean life helps scientists estimate whale prevalence off the California coast
Using an innovative alternative method, researchers examined microbial “ecological habitats” as highly accurate predictors of how many filter-feeding whales were occupying the California coast between 2014 and 2020 from San Diego to Morro Bay.
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NewsNewly discovered microbial world helps protect developing lobsters
As ocean temperatures rise and marine ecosystems change, scientists are working to understand how valuable species like the American lobster will respond. Scientists suggest one source of resilience may come from the microscopic bacterial communities living on lobster embryos.
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NewsClimate warming causes bleaching in key Arctic lichen, study finds
Long-term climate warming is causing a bleaching effect in a key Arctic lichen species, according to new research. Prolonged warming caused significant bleaching in the dominant lichen species Cetrariella delisei, reducing its ability to photosynthesise and grow.
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NewsHidden small RNA determines if cholera bacterium can infect humans
Scientists have uncovered what gives Vibrio cholerae, the bacterium that causes cholera, the ability to colonize the human gut. They found that a small RNA embedded within another gene controls where cholera thrives, a discovery that could improve prediction and prevention strategies.
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NewsAntibiotic proves ineffective in treating wheezing in young children in the emergency room
A study has shown that giving the antibiotic azithromycin did not help preschool children seen in the hospital emergency room with bouts of severe wheezing. It provides more definitive answers to longstanding questions and inconclusive studies about the role of some types of bacteria in wheezing and asthma.
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NewsStudy reveals hidden diversity of algae in farmland
Researchers discovered unexpectedly strong seasonal variation in algae in the surface soils of farmland. Xanthophyceae were the most abundant when it was colder, at the time points in spring and autumn; whereas Cyanobacteria and green algae were prevalent shortly before crop harvest in summer.
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NewsProtein engineering and testing condensed to a single day
Engineered proteins must be created in the real world and tested for performance - a labor-intensive process that involves constructing the DNA instructions for each protein in yeast or bacteria and growing individual clones for protein production and testing. Researchers say they have condensed the time-intensive protein building and testing process to just 24 hours.
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NewsOne-fifth of pregnant women aren’t properly screened for syphilis
A new study found that 1 in 5 pregnant women in Ontario did not receive timely syphilis screening, which is critical for preventing syphilis infection in newborns. Sociodemographic and behavioural risk factors associated with being screened late may be related to an increased likelihood of inadequate prenatal care access.
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NewsAgricultural azoles drive clinical azole resistance in Candida tropicalis via inducing aneuploidy
To define the causal role of agricultural azole fungicides in driving clinical azole resistance in the major human opportunistic fungal pathogen Candida tropicalis, researchers conducted a systematic study integrating experimental evolution, genomic characterization, and transcriptomic profiling.
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NewsEstablishing a regulatory framework for phage therapy in China
A new study summarizes the current regulatory frameworks for phage therapy in Western countries and China, and proposes a pathway for establishing a regulatory framework that enables safe and effective clinical application of phage therapy in China.
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NewsParaprobiotic counteracts damage to male fertility from BPA in plastic
BPA has been shown to impair sperm function, in part through increased generation of reactive oxygen species. Researchers investigated whether a paraprobiotic material derived from the lactic acid bacterium Enterococcus faecalis (known as FK‑23) protects against the sperm toxicity caused by BPA.
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NewsHidden viruses reshape one of Earth’s largest carbon systems, study finds
Viruses play a far more active role in Earth’s carbon cycle than previously understood, according to new research that reveals how they infect and control microbes responsible for carbon production in some of the planet’s largest, darkest ecosystems.
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NewsMpox study reveals hidden infections may fuel spread
A study shows that in mid- to late 2024, mpox was far more common among men who have sex with men than previously thought. Individuals without symptoms accounted for most infections and likely played a prominent role in transmission, contrary to prior assumptions that people had to be symptomatic to spread the disease.