Articles tagged with Bacterial Genomes
Researchers tracked the evolution of Staphylococcus aureus in patients with eczema, discovering rapid mutations in a gene that enables the bacteria to grow faster on the skin. These findings could lead to targeted treatments by targeting variants of S. aureus associated with eczema symptoms.
Researchers discovered a plant biological clock-regulated mechanism that helps plants tolerate cold temperatures and damage from bright light. The mechanism, controlled by the SIG5 gene, signals proteins in chloroplasts to protect against environmental stress, potentially improving crop resilience for colder climates.
Rice University's assistant professor of computer science, Todd Treangen, has been awarded a $599,943 National Science Foundation CAREER Award to develop a comprehensive computational platform for detecting yet-unseen microbial pathogens. The project aims to characterize previously unseen pathogens that could pose a risk to humans.
A new computational technique analyzes bacterial genetic sequences to monitor the spread of antibiotic resistance over time. The study found that resistance genes most likely to spread are those on conjugative plasmids and targeting specific antibiotics, with many coming from a single source.
A recent study highlights the perils of bacteria's secret antimicrobial resistance, which can be difficult to detect using traditional methods. Researchers are exploring new approaches, such as genetic analysis, to identify and prevent the spread of these resistant strains.
The giant faba bean genome has been successfully sequenced, offering insights into its traits such as drought tolerance and protein content. This breakthrough has the potential to improve crop yields and reduce reliance on artificial fertilizers, making faba bean a more attractive crop for sustainable agriculture.
The study suggests that human exchanges, such as trade and travel, and exchanges between ecosystems drive the spread of aminoglycoside resistance. Aminoglycoside genes were detected in over 160,000 bacteria genomes across all continents, with most found in clinical, human, and farm samples.
A new study found that E. coli K-12 has accumulated numerous genetic changes compared to its original isolated bacteria, making it less suitable as a model organism. This discovery highlights the rapid evolution of bacterial genomes and challenges the long-standing use of a single strain in research.
Researchers from UC San Diego and Yale University are exploring the therapeutic potential of
The study reveals unexpected mechanisms that enable Aromatoleum aromaticum EbN1 T to adapt to changing environments. By analyzing its metabolic network, researchers developed a model to predict growth under diverse conditions.
A new study by Portland State University researchers found that deep-sea microorganisms thrive in high-temperature environments and exhibit a staggering level of diversity, with over 500 new genera discovered. The microbes also rely on each other for survival through metabolic handoffs, revealing a complex interdependence.
Researchers identified hundreds of microorganisms associated with plant roots and soil, showing potential for developing biological substitutes for phosphorus-based fertilizers. The discovery highlights the importance of microbial communities in supplying essential nutrients like nitrogen.
Researchers at Aston University have created the world's first computer reconstruction of a virus, including its complete native genome. This breakthrough could lead to the development of targeted treatments to kill bacteria that are dangerous to humans, reducing the threat of antibiotic resistance.
Researchers found a novel gene-transfer mechanism in Prochlorococcus that enables the transmission of entire blocks of genes between organisms, even when widely separated. This mechanism, dubbed 'tycheposons,' involves sequences of DNA that can include several genes and are transported by membrane vesicles or hijacked virus particles.
A recent study discovered a legume locus that stimulates promiscuous interaction with soil bacteria, forming nitrogen-fixing nodules with up to 30 different rhizobial strains. This finding opens the door for crop improvement by naturally promoting plant growth through symbiotic associations.
A global study reveals that antimicrobial resistance genes in bacteria are driven by various factors, including geographic regions and hosts. The research identifies key genes conferring resistance to critically important drugs, shedding light on the mechanisms of transmission and the need for collaborative interventions.
Researchers uncovered distinct DNA methylation profiles in ocean microbes, shedding light on population dynamics and interactions. The study's findings have significant implications for understanding pathogenicity and developing new approaches to monitoring environmental health.
A study found that 'harmless' Listeria innocua strains are developing resistance to temperature, pH, dehydration and other stresses, as well as hypervirulence similar to pathogenic L. monocytogenes. The strains were collected from raw, dried and processed meats at commercial food processing facilities in South Africa.
Researchers at the University Hospital Bonn have discovered a new function of CRISPR/Cas9 gene scissors, which produce small signal molecules that bind to proteins, activating an emergency response. This discovery opens up new possibilities for treating diseases using CRISPR technology.
Researchers at Max-Planck Institute for Terrestrial Microbiology have deciphered the biosynthesis of benzobactins, a class of natural compounds with special biological activity. The study reveals that these compounds are widespread in diverse bacteria and could be excellent candidates for future drug therapy.
Researchers found that horizontal gene transfer can accelerate bacterial adaptation under most growth conditions, but not all. By analyzing the fitness effects of gene transfer, they can predict when it will provide an advantage.
Researchers at KAUST have identified thermophilic bacteria with potential to degrade oil contamination. The study reveals that certain bacteria can secrete surfactants and absorb emulsified petroleum into their cells for degradation via enzymatic activity.
The study revealed an alternative pathway for cysteine biosynthesis in animals, using enzymes similar to those found in fungi and bacteria. This challenges the previous assumption that corals rely on symbiotic relationships with algae for cysteine production.
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.
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.
A new study finds that lab adaptation involves mutations to highly conserved proteins, but natural adaptation exhibits more complex patterns, including non-conservation within functional domains. Lab conditions differ significantly from natural environments with variable and changing selective pressures.
Two papers published in Nature Plants unveil the first full-length genomes for homosporous ferns, a group containing 99% of modern fern diversity. The Ceratopteris genome suggests that ferns stole genes from bacteria for anti-herbivory toxins.
Researchers at Cornell University have discovered a new CRISPR system called Craspase, which has the potential to develop promising antiviral and tissue engineering tools in animals and plants. The study uses cryo-electron microscopy snapshots to explain how Craspase identifies RNA targets and activates proteases.
Researchers found that genetic makeup of mice affects bacteria in their gut, with heritable species and co-evolution observed. The study's findings could provide new insights into treating human gut-related conditions like Inflammatory Bowel Disease (IBD).
A new study challenges a popular scenario explaining the origin of eukaryotes, suggesting that cells can grow to considerable volume without acquiring mitochondria. Researchers explore energy requirements and genome arrangement in prokaryotes and eukaryotes, revealing overlap between cell types rather than a hard boundary line.
Scientists found a full bacterial genome of Wolbachia transferred into the fruit fly Drosophila ananassae, expanding chromosome size by 20%. Long-read sequencing technology revealed functional RNA and edited sequences indicating that genetic material is active.
Researchers at TUM have developed a cell-free production method for bacteriophages, which can be used to target and combat specific types of antibiotic-resistant bacteria. The new technology has the potential to produce personalized therapeutic phages for clinical trials, addressing multi-resistant germ infections.
NC State researchers discovered a new way to make the difficult-to-characterize gut bacterium Bifidobacterium more responsive to antibiotics. They also found tiny changes in different strains that reflect large differences in their characteristics, highlighting the need for individualized CRISPR-based genome engineering approaches.
A new study found that the O139 cholera variant lost antimicrobial resistance and changed toxin production, leading to its unexpected decline. The findings suggest continuous monitoring of genetic changes is key to preventing future outbreaks.
The Emu project effectively identifies bacterial species by leveraging long DNA sequences spanning the entire length of the gene under study. This approach facilitates the analysis of key genes in microbiome researchers' efforts to sort out harmful and helpful bacteria.
Scientists discovered a new species of giant filamentous bacterium, Thiomargarita magnifica, with DNA clustered within membrane-bound compartments. This unique organism challenges traditional understanding of bacterial morphology and genomic complexity.
Researchers discovered 40,000 biosynthetic gene clusters in ocean microorganisms, including a new species with giant genome size. These clusters may hold key to new natural products with antibiotic properties. Collaboration between ETH Zurich and Jörn Piel's group validated the structure and function of two promising molecules.
SeqScreen, an open-source software toolkit, accurately characterizes short DNA sequences to detect pathogenic sequences. The program uses a curated database of thousands of gene sequences representing 32 types of virulence functions.
The study reveals that the 16th-century E. coli acquired novel genes and antibiotic resistance over time, posing a significant threat to human health despite not causing pandemics. The reconstructed genome provides valuable insights into its evolution and potential role as an opportunistic pathogen.
Ancient DNA analysis reveals that an epidemic devastated a local community in Kyrgyzstan in 1338 and 1339, linked to the Black Death. The study suggests that the Black Death's ancestor originated in Central Asia, close to Lake Issyk Kul.
Bacteria's CRISPR system uses spacers to store viral information, but must balance risk of autoimmunity with immune memory. Longer spacers reduce autoimmune response risk, allowing more spacers to be stored without triggering an immune reaction.
A study found that Brazil's Salmonella vaccine for poultry contributed to the emergence of antibiotic-resistant strains. However, these resistant bacteria have not increased food poisoning cases in humans in the UK.
A new platform and genomic database has been developed to monitor and control multidrug-resistant bacteria, with over 500 human pathogens already available. The database aims to provide strategic information on microorganisms classified as a “critical priority” by the World Health Organization.
Cornell researchers develop smaller gene-editing tool, IscB-ωRNA, to solve size problem of delivering CRISPR-Cas9 into every cell. The tool works similarly to CRISPR-Cas9 but with a smaller RNA component, offering new starting point for more powerful and accessible gene editing tools.
A new technique called Operational Genomic Units (OGU) allows for improved resolution and simplicity in analyzing microbiome samples. By using individual genomes as basic units, researchers can pinpoint biologically relevant characteristics such as age and sex with greater accuracy.
Researchers sequenced bacteria associated with Fucus vesiculosus, finding tissue-specific bacteria important for alga's health. The study revealed new insights into the relationships between marine bacteria and algae, shedding light on the impact of climate change on ecosystem services.
Researchers developed a technique to track changes in bacterial mutation frequencies, which can inform initial and switched antibiotics. The study found that rare antibiotic-resistant bacteria can rapidly expand within days in response to treatment.
Researchers found that hundreds of bacteria genes were integrated into ancient plants, granting them desirable traits for land colonization. The study suggests horizontal gene transfer played a significant role in land-plant evolution, allowing plants to adapt rapidly to new environments.
A new standardised test has been developed to accurately determine the transmission of VREfm, enabling rapid identification of potential outbreaks and early intervention. The framework uses genomic analysis to compare bacterial genomes and infer transmission links, facilitating global deployment for outbreak detection and investigation.
A new study reveals that the genes present in a microbial community can predict its dynamic metabolic activity, with implications for the nitrogen cycle and other biogeochemical processes. The research provides insights into how scientists can infer metabolite dynamics from aggregate gene content, design microbial communities for speci...
A new EU-funded project, MUSIC, will investigate how bacterial defences influence the spread of mobile genetic elements (MGEs) between bacteria. MGEs can change key traits of bacteria, including antibiotic resistance and virulence.
Researchers have discovered a molecular mechanism that contributed to the emergence of the seventh cholera pandemic. The study found that modified Vibrio cholerae bacteria used their type 6 secretion system (T6SS) to outcompete and kill older strains, leading to their displacement.
Researchers discovered that bacteria use an ancient molecule called polyphosphate to silence problematic genetic elements, similar to heterochromatin in eukaryotes. This process helps protect the bacterial cell from harm and could enable scientists to develop new antibiotics.
Researchers have made significant breakthroughs in understanding the human gut microbiome by focusing on bacterial strains rather than species. By using a new computational method, scientists can analyze the strains of bacteria present in a microbiome sample more quickly and affordably.
Researchers identified 'pre-resistance' signs in bacteria, predicting future resistance to antibiotics. This discovery allows doctors to select the best treatments for bacterial infections and paves the way for personalized genomic therapy.
A study of Edo-era Japanese skeletons reveals a prevalence of periodontal disease similar to modern times, with distinct bacterial species. Researchers analyzed dental calculus from 12 human skeletons and compared their oral microbiomes to modern samples, shedding light on the evolution of the oral microbiome.
A recent study uses machine learning to rapidly discover bacterial isolates with antifungal properties, identifying promising new compounds for crop protection. The approach analyzes thousands of microbial genomes at once, allowing researchers to identify novel beneficial microbes and bypass traditional screening tactics.
Researchers developed a kinetic hypothesis governing the evolution of the Last Universal Common Ancestor (LUCA) based on simulation experiments. They discovered a kinetic factor that governs the flow of chemical reactions in the TCA cycle, validating their hypothesis for deep-branching bacteria and archaea.
A rapid same-day test has been developed to identify secondary infections in COVID-19 patients on intensive care, allowing for targeted antibiotic treatment and reduced risk of antimicrobial resistance. The test uses nanopore sequencing technology to analyze bacterial and fungal pathogens present in patient samples.
A new computer program called Codetta can analyze the genome sequences of over 250,000 bacteria and archaea to identify alternative genetic codes. This could help scientists understand how genetic codes evolve and change.