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Showing posts from January, 2026

Parabacteroides

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Parabacteroides   is a   Gram-negative ,   anaerobic , non- spore -forming genus from the family   Tannerellaceae . First isolated from fecal specimen in 1933, type strain  Parabacteroides distasonis  was originally classified under the name  Bacteroides distasonis.  The strain was re-classified to form the new genus  Parabacteroides  in 2006.  Parabacteroides  currently comprise 21 phylogenetically, ecologically, and metabolically diverse species, 11 of which are listed in the taxonomic database 

Biocontrol efficiency of native Bacillus sp. HC-9 on honeysuckle leaf spot caused by Alternaria alternata

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  Highlights • Bacillus  sp. HC-9 controls honeysuckle leaf spot caused by  A. alternata. • Strain HC-9 inhibits eight phytopathogenic fungi with strong antifungal activity. • Strain HC-9 induces ROS and activates defense enzymes in honeysuckle leaves. • Field trials show HC-9 achieves up to 80.52% disease control efficiency.

The TamA protein as a subunit vaccine improves immune protection against highly virulent Klebsiella pneumoniae infection in mice

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  Highlights • Identification of the TamA protein as a highly conserved antigen across diverse  Klebsiella pneumoniae  strains, making it an ideal target for a broad-spectrum subunit vaccine. • Development and evaluation of a recombinant TamA protein vaccine that significantly enhances immune protection against a highly virulent  Klebsiella pneumoniae  infection in a murine model. • Demonstration of TamA-induced specific antibodies that effectively inhibit bacterial adherence to epithelial cells, thereby reducing bacterial load and pathological damage in vaccinated mice. • Significant survival benefit observed in TamA-vaccinated mice, with 80 % surviving over 10 days following a lethal dose challenge, compared to controls that survived less than 48 h. • Reduction in tissue bacterial loads and cytokine levels, along with mitigation of pathological changes in TamA-immunized mice, supporting the potential of TamA as a candidate vaccine for preventing  Klebsiel...

Chlamydiose

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Chlamydiosen   sind durch verschiedene   Chlamydien   (bestimmte   Bakterienarten ) verursachte   Infektionskrankheiten . Sie betreffen das   Auge   (als   Trachom ), die   Atemwege   und die   Lunge   (als   Pneumonie ) und den   Urogenitaltrakt   (Harn- und Geschlechtsorgane) als   sexuell übertragene Krankheit .

Phospholipid Diversity and Biosynthesis Pathway in Bacteria: Potential Antibacterial Targets

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  Highlights • Phospholipid diversity shapes membrane properties for growth and stress adaptation • Bacteria remodel phospholipid head groups and acyl chains to resist antimicrobials • Phospholipid and its metabolism serve as promising potential antibacterial targets

Isolation, Identification, and Plant Growth-Promoting Mechanisms of Strain BN5, with a Focus on Exogenously Trp-Independent IAA Biosynthesis, and Its Impact on Cucumber Cultivation

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  Highlights • First systematic report of  Niallia taxi  BN5 with plant growth-promoting (PGP) activity, filling the  Niallia  PGP mechanism gap (previously studied for bioremediation/antibacterial functions). • Multi-omics (genome/transcriptome/qPCR) show BN5 has a complete trp operon for constitutive IAA biosynthesis (17.64 μg/mL); tryptophan regulates trp/motility genes. • BN5 enhances cucumber growth (height +24.29%, stem +11.23%), yield (+17.55%) and quality (vitamin C +17.2%, soluble sugar +37.41%) in pot/greenhouse trials. • BN5 reshapes rhizosphere microbiomes (enriches  Bacillus / Pseudomonas ) and elevates soil enzymes, providing a microbial resource for sustainable agriculture.

Vaccines Are Helping Older People More Than We Knew

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Many shots seem to have “off-target” benefits, such as lowering the risk of dementia, studies have found.

Differences in Gut Microbiota Composition Are an Important Reason for Lower Serum P-Cresol Sulfate Levels in anuric Peritoneal Dialysis Patients Compared to Hemodialysis Patients

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  Highlights • Distinct microbial communities are found in peritoneal dialysis (PD) and paired hemodialysis (HD) patients, despite similar microbiome diversity. • Serum p-cresyl sulfate (PCS) levels are significantly lower in PD patients compared to paired HD patients. • Altered microbial composition in PD patients, featuring more opportunistic pathogens and fewer beneficial bacteria, is linked to differences in metabolite profiles. • Fecal transplant experiments confirm that the HD-associated gut microbiota directly leads to higher PCS production. • Targeting the gut microbiota presents a potential therapeutic strategy to reduce uremic toxins in dialysis patients.

Microbial metabolism in deep terrestrial subsurface communities - amino acids as biosignatures

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  Highlights • Salinity and nutrient availability affect the utilization and secretion of amino acids by deep biosphere microbial consortia • Anoxic deep biosphere enrichment cultures were compared to Desulfovibrio desulfuricans • Amino acids and organic acids were degraded under different nutrient conditions • Phe and Val degradation remained unaffected by changes in nutrient availability • Metabolic pathways involving Phe, Cys and Met were most prominent

Vegetation composition shapes denitrifier community structure and enhances nitrogen removal in estuarine wetlands: evidence from Reed-Willow Mix promoting nirK-dominated guilds

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  Highlights • Mixed reed and willow vegetation boosts denitrification more than monocultures. • nirK  denitrifiers are major drivers of N removal variation over  nirS . • Soil depth reshapes denitrifiers:  nirS  depth-sensitive,  nirK  nutrient-responsive. • Reed-willow boosts network complexity with depth to foster microbial interactions. • Bradyrhizobium, Sinorhizobiu m, and  Mesorhizobium  are key to mitigating N loss.

A longitudinal profiling of microbiome of diabetic foot ulcers shows functional role of microbial communities in wound worsening and chronicity

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  Highlights • Pseudomonas, Escherichia and Prevotella dominated DFU assemblage across visits • Alcaligenes dominated healed DFU while Enterococcus was abundant in worsened DFU • High HbA1c favored Pseudomonas while Prevotella was abundant in lower HbA1c samples • Amputated DFUs had increased abundance of Escherichia and reduced Staphylococcus • Microbiome functional profiles in worsened DFU were enriched in virulence factors

Butyrolactol A enhances caspofungin efficacy via flippase inhibition in drug-resistant fungi

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  Highlights • Butyrolactol A synergizes with caspofungin against cryptococci and  Candida auris • BLA restores echinocandin efficacy by targeting the Apt1-Cdc50 flippase complex • Cryo-EM shows BLA traps the Apt1-Cdc50 phospholipid flippase in a dead-end state • BLA blocks lipid transport, disrupts membrane homeostasis, and boosts drug uptake

A look into the virosphere of clouds: a world yet to be explored

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  Highlights • Viruses are largely overlooked in outdoor aeromicrobiological studies • Based on current knowledge in aeromicrobiology, a total of 10 21  virus particles are estimated to occupy clouds globally • Although very dilute, these may contribute to the atmospheric life cycle of microorganisms • Virus-bacteria interactions in clouds would have many implications in ecology and the Earth’s microbiome