secondary metabolite biosynthesis – Page 2

Integrated Transcriptomics and Metabolomics Provide Insight into Degeneration-Related Molecular Mechanisms of Morchella importuna During Repeated Subculturing

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Morel mushrooms (Morchella importuna) lose quality when repeatedly grown from cultured samples, a process called strain degeneration. Scientists found that degenerated strains have lower levels of beneficial compounds called flavonoids, which normally protect mushroom cells from damage. By studying gene expression and metabolite changes, researchers identified a specific gene responsible for making these protective flavonoids, which becomes less active in degenerated strains. This research suggests that avoiding frequent reculturing and maintaining cold storage or adding antioxidants could help preserve healthy morel mushroom strains.

Antagonistic mechanism of Bacillus velezensis HX0039 as a biocontrol agent against Trichoderma virens-induced ‘Sanghuang’ green mold

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Scientists discovered a beneficial bacteria called Bacillus velezensis HX0039 that can protect ‘Sanghuang’ mushrooms from harmful green mold disease. This bacteria produces natural antifungal compounds like iturin A that stop the disease without harming the mushrooms or the environment. Testing showed it was 83% effective at preventing green mold and was completely safe for both mushroom cultivation and animal consumption, making it a promising alternative to chemical fungicides.

Genome-Mining Based Discovery of Pyrrolomycin K and L from the Termite-Associated Micromonospora sp. RB23

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Scientists discovered two new antimicrobial compounds called pyrrolomycins from bacteria living in termites using genome sequencing and chemical analysis. These compounds contain chlorine atoms and are related to known antibiotics. The research shows how the bacteria protects itself from its own antimicrobial compounds through chemical modifications, offering insights into developing new antibiotics.

Haplotype-resolved genomes of Phlebopus portentosus reveal nuclear differentiation, TE-mediated variation, and saprotrophic potential

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Researchers sequenced the complete genomes of two compatible versions of the black truffle fungus Phlebopus portentosus, the only Boletales species grown commercially. They discovered that jumping genes called transposable elements cause significant differences between the two fungal nuclei, affecting the production of beneficial compounds. The study shows this mushroom can both partner with tree roots and break down organic matter independently, making it versatile in nature and valuable for both food and medicine.

Comparative transcriptome analysis reveals the genetic basis underlying the biosynthesis of polysaccharides in Hericium erinaceus

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Researchers studied six different strains of lion’s mane mushrooms to understand how they produce beneficial compounds called polysaccharides. Using advanced genetic analysis, they identified thirteen key genes responsible for making these health-promoting molecules. The study found that a strain called PZH-05 produced the most polysaccharides, and its genes were more active than in other strains. This research helps explain why lion’s mane mushrooms are effective for boosting immunity, fighting cancer, and managing blood sugar.

Integrated genome and transcriptome analysis reveals pathogenic mechanisms of Calonectria eucalypti in Eucalyptus leaf blight

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Scientists studied a dangerous fungus called Calonectria eucalypti that kills eucalyptus trees worldwide. They sequenced the fungus’s entire genetic code and tracked which genes it turned on during infection. They found that the fungus uses different strategies at different stages of infection, starting with penetration, then breaking down plant cell walls, and finally stealing nutrients. This research helps us understand how the fungus works and develop better ways to protect eucalyptus plantations.

Biology and Application of Chaetomium globosum as a Biocontrol Agent: Current Status and Future Prospects

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Chaetomium globosum is a common soil fungus that shows great potential for protecting crops from diseases and pests naturally. This review explains how it works—by producing toxic compounds against harmful fungi, directly attacking pathogens, and boosting plants’ own defense systems. When applied to seeds or soil, it has reduced crop diseases by up to 73% in field tests while also improving soil health and crop yields, making it a promising alternative to chemical fungicides.

Circadian clock is critical for fungal pathogenesis by regulating zinc starvation response and secondary metabolism

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Scientists discovered that Fusarium oxysporum, a fungus that causes plant diseases, uses an internal clock system to time its attacks on plants. The fungus is most dangerous at dawn, when it activates special genes to survive the plant’s defenses and produce toxins. By disrupting the fungus’s clock genes, researchers found they could make it harmless. This discovery could lead to new ways to protect crops by targeting the pathogen’s timing system rather than using traditional fungicides.

Comparative Multi-Omics Analysis and Antitumor Activity of Phylloporia crataegi and Phylloporia fontanesiae

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Researchers compared two types of medicinal fungi (Phylloporia crataegi and Phylloporia fontanesiae) to understand why one is better at fighting cancer. They used advanced techniques to examine the fungi’s chemicals, genes, and proteins, discovering that P. crataegi contains special compounds like trans-cinnamic acid that help kill cancer cells. This study provides important information for developing new cancer treatments from these fungi.

Phylogenetic and functional diversity among Drosophila-associated metagenome-assembled genomes

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Researchers used advanced sequencing techniques to study the bacteria living in wild fruit flies collected from three continents. They discovered that these flies host diverse communities of bacteria that produce various compounds potentially beneficial to the fly, including antimicrobial molecules and metabolites that may help with nutrition and disease resistance. The study reveals that wild fly microbiomes are much more complex than previously understood from laboratory studies.

Research Keyword: secondary metabolite biosynthesis