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COVID-19 virus increases risk for other infections by disrupting normal mix of gut bacteria

A new study found that COVID-19 infection directly interferes with the healthy balance of microbes in the gut, further endangering patients. The research revealed that antibiotic-resistant species can escape into the bloodstream, putting patients at greater risk for life-threatening secondary infections.

SourceNYU Langone Health / NYU Grossman School of Medicine·JournalNature Communications·TypeExperimental study·DateNov 1, 2022

Gut microbiomes help bears with very different diets reach the same size

A recent study of Alaskan brown bears reveals that their gut microbiomes play a crucial role in supporting health and achieving comparable size despite eating vastly different diets. The research sheds light on the importance of diverse dietary niches for bears, which can help them extract nutrition from various food sources.

SourceNorth Carolina State University·JournalScientific Reports·TypeObservational study·DateSep 22, 2022

Same same but different

Researchers at Kyoto University have developed a new method to detect intraspecies genomic diversity, or microdiversity, of uncultivated bacteria. This approach allows for a more comprehensive understanding of microbial ecology and evolution, as previously overlooked variations are now being studied.

SourceKyoto University·JournalmSystems·TypeExperimental study·DateSep 21, 2022

Gut microbes and humans on a joint evolutionary journey

Researchers found that over 60% of investigated microbial species matched their human host's evolutionary history, indicating a co-evolutionary relationship spanning ~100,000 years. This discovery fundamentally changes how the human gut microbiome is viewed and opens up new possibilities for population-specific therapies.

SourceMax-Planck-Gesellschaft·JournalScience·TypeMeta-analysis·DateSep 16, 2022

Keeping Kermit: New clues to protecting frogs from deadly Bd fungus

A new study from the University of South Australia shows that captive frogs can be protected from the deadly fungus Batrachochytrium dendrobatidis (Bd) through natural skin shedding processes. However, captivity also reduces skin bacteria diversity and richness, potentially affecting the frogs' resilience to pathogens.

SourceUniversity of South Australia·JournalTransactions of the Royal Society of South Australia·TypeExperimental study·DateAug 28, 2022

Ridge-to-reef ecosystem census reveals hidden reservoir for microbiomes

A team of researchers at the University of Hawaii collected over 3,000 microbial samples from Waimea Valley's watershed, discovering that microbes follow the food web and are maintained within soil and stream water. The study also found that local distribution of a microbe predicts its global distribution.

SourceUniversity of Hawaii at Manoa·JournalProceedings of the National Academy of Sciences·TypeObservational study·DateAug 8, 2022

Microbial ´dark matter´: Centuries-old lava caves of Hawaiʻi Island contain thousands of unknown bacterial species

A new study in Frontiers in Microbiology found that centuries-old lava caves on Hawaiʻi Island harbor an astonishing number of previously undiscovered bacterial species, including the Chloroflexi group. These microbes play key ecological roles in their communities and may have played a crucial role in shaping life on Mars and early Earth.

SourceFrontiers·JournalFrontiers in Microbiology·TypeExperimental study·DateJul 21, 2022

Is organic farming always good for the environment? – Researchers create strategy to help decide

A recent study by Xi'an Jiaotong-Liverpool University provides a method to help farmers and policymakers decide whether organic farming is beneficial for the environment. The researchers analyzed international studies to find a threshold where organic farming's biodiversity gain outweighs its land requirements.

SourceXi'an Jiaotong-Liverpool University·JournalEcology Letters·TypeMeta-analysis·DateJul 12, 2022

New study investigates the microbiomes of dogs across the world

Researchers sampled fecal microbiomes from dogs across diverse populations in South Africa, India, and Laos, revealing similar metabolic functions. The study suggests that industrialization may affect the human microbiome diversity in non-industrialized settings.

SourceCarl R. Woese Institute for Genomic Biology, University of Illinois at Urbana-Champaign·JournalProceedings of the Royal Society B Biological Sciences·TypeObservational study·DateJun 28, 2022

Cover crops not enough to improve soil after decades of continuous corn

Researchers found that short-term cover crop use cannot reverse decades of soil microbial dynamics in response to unsustainable practices. Long-term fertilization disrupted nitrogen cycling communities, while cover crops enhanced biodiversity but had both positive and negative effects on soil microbes.

When more complex is simpler: ‘Coarse-graining’ can help scientists understand complex microbial ecosystems

A new modeling framework suggests that some microbial ecosystems are more easily understood through coarse-graining, which involves omitting details. This approach could help biologists study microbes in their natural environments, rather than isolating them in a petri dish.

SourceWashington University in St. Louis·JournalPhysical Review X·TypeComputational simulation/modeling·DateMay 16, 2022

Diets high in fiber associated with less antibiotic resistance in gut bacteria

A study published in mBio found that healthy adults with diets rich in soluble fiber and lower animal protein consumption had fewer antibiotic-resistant microbes in their guts. This suggests that modifying the diet through increased fiber intake may help reduce antimicrobial resistance by shaping the gut microbiome.

SourceUS Department of Agriculture - Agricultural Research Service·JournalmBio·TypeObservational study·DateMay 10, 2022

Recurrent UTIs linked to gut microbiome, chronic inflammation

A new study reveals that recurrent urinary tract infections (UTIs) may be caused by an imbalance in the gut microbiome, which can lead to chronic inflammation and increased risk of future UTIs. Antibiotics given to treat UTIs can disrupt the microbiome, making it easier for disease-causing bacteria to spread.

SourceWashU Medicine·JournalNature Microbiology·TypeObservational study·DateMay 5, 2022

Bacteria make a beeline to escape tight spaces

Researchers observed that bacteria change their swimming behavior to avoid getting stuck in confined spaces. In open areas, bacteria meander without discernible pattern, but upon entry into tight spaces, they straighten their paths to escape, suggesting physical features like walls and corners serve as crucial cues.

SourceUniversity of Hawaii at Manoa·JournalBiophysical Journal·TypeExperimental study·DateMay 2, 2022

Research discovers new bacteria that stick to plastic in the deep sea to travel around the ocean

Researchers have found a group of deep-sea bacteria that stick to plastic, allowing them to 'hitchhike' across the ocean and potentially enhancing microbial connectivity. These bacteria were discovered in the North-East Atlantic and include strains previously isolated from shipwrecks and extreme environments.

SourceNewcastle University·JournalEnvironmental Pollution·TypeObservational study·DateApr 28, 2022

Study: Carbs, sugary foods may influence poor oral health

A recent study has found a link between high carbohydrate intake and the diversity of oral bacteria in postmenopausal women. The researchers also discovered associations between sugar consumption and certain types of gum disease, such as gingivitis. These findings suggest that diet may play a role in the development of periodontal dise...

SourceUniversity at Buffalo·JournalScientific Reports·TypeObservational study·DateApr 5, 2022

How the Chagas pathogen changes the intestinal microbiota of predatory bugs

Researchers found that Chagas trypanosomes change the bacterial community in predatory bugs' intestines, leading to a decrease in diversity and an increase in certain pathogenic bacteria. The study also identified four bacteria species crucial for bug survival, which could be used to develop defensive substances against the parasite.

SourceGoethe University Frankfurt·JournalMicrobiome·TypeExperimental study·DateMar 21, 2022

Dispersal strategies drive marine microbial diversity

A study published in eLife reveals that trade-offs between growth and survival enable marine microbes with different dispersal strategies to coexist on small particles in the ocean. The findings help explain the diversity of bacteria and microbes in oceans, shedding light on the factors supporting their existence.

SourceeLife·JournaleLife·DateMar 15, 2022