Research Keyword: secondary metabolites

Development of a granular bioformulation of Achromobacter xylosoxidans AX77 16S for sustainable onion white rot management and growth enhancement

Scientists discovered a beneficial bacterium living inside onion seeds that can fight a serious fungal disease called white rot and help seeds grow better. They turned this bacterium into an easy-to-use granular product that lasts up to a year, offering farmers an environmentally friendly alternative to chemical fungicides. The product not only prevents the fungal disease but also improves seed germination and plant growth, making it a promising sustainable solution for onion farming.

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Endophytic Alternaria alternata Culture-Derived Elicitor Promotes Growth and Antibacterial Activity in Kalanchoe laetivirens

Researchers cultivated medicinal Kalanchoe plants in controlled laboratory conditions and exposed them to a powdered form of a beneficial fungus (Alternaria alternata). The plants treated with this fungal extract grew larger, developed more roots, and produced greater amounts of antibacterial compounds compared to untreated plants. The treated plants were especially effective at stopping the growth of two common disease-causing bacteria (E. coli and S. aureus). This approach could lead to more efficient production of plant-based medicines.

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The First Whole Genome Sequence and Methylation Profile of Gerronema lapidescens QL01

Scientists have sequenced the complete genetic code of Lei Wan (Gerronema lapidescens), a medicinal mushroom used in traditional Chinese medicine for treating parasitic infections and digestive problems. The research revealed how this mushroom produces beneficial compounds and how its genes are regulated through a process called methylation. This information could help develop better ways to cultivate this increasingly rare mushroom sustainably rather than harvesting it from the wild, making it available for future medical research and treatment.

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Identification of an antifungal lipopeptide from Bacillus amyloliquefaciens HAU3 inhibiting the growth of Fusarium graminearum using preparative chromatography and 2D-NMR

Researchers identified a soil bacterium called Bacillus amyloliquefaciens HAU3 that naturally produces fengycin, a powerful antifungal compound. This compound can kill disease-causing fungi like Fusarium graminearum that contaminate animal feed and produce harmful toxins. The bacteria also breaks down dangerous toxins called zearalenone, making it a potential natural solution for protecting livestock feed from fungal contamination.

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Unveiling the Substrate-Dependent Dynamics of Mycotoxin Production in Fusarium verticillioides Using an OSMAC-Metabolomics Approach

Researchers studied how different growing conditions affect the production of harmful toxins by a fungus called Fusarium verticillioides that contaminates crops. Using advanced chemical analysis techniques, they found that the type of growth medium and time of incubation significantly influenced which toxins the fungus produced and in what amounts. Growing the fungus on corn-based medium produced different toxins than growing it on barley-based medium. These findings can help develop better strategies to prevent mycotoxin contamination in food and animal feed.

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Polyamine Induction of Secondary Metabolite Biosynthetic Genes in Fungi Is Mediated by Global Regulator LaeA and α-NAC Transcriptional Coactivator: Connection to Epigenetic Modification of Histones

Polyamines are natural compounds that act like chemical switches controlling how fungi produce useful medicines like antibiotics and statins. These molecules work by attaching to DNA and modifying histone proteins, which turns on or off the genes responsible for making pharmaceutical compounds. This research reveals that understanding polyamine control could help scientists increase antibiotic production and make plants more resistant to fungal diseases.

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