biosynthetic gene clusters – Page 6

Genomic characterization and fermentation study of the endophyte Stemphylium sp. (Aa22), a producer of bioactive alkyl-resorcinols

mycolabadmin

Scientists sequenced the complete genome of a fungus called Stemphylium sp. (strain Aa22) that lives inside wormwood plants without harming them. This fungus produces natural compounds called alkyl-resorcinols that can repel aphids and kill plant-damaging nematodes, making them potentially useful as organic pesticides. The researchers found the genetic instructions for making these compounds and determined that growing the fungus in liquid culture produces more of the useful compounds than growing it on rice, offering a promising path toward developing these natural biopesticides on a larger scale.

Functional diversification of epidithiodiketopiperazine methylation and oxidation towards pathogenic fungi

mycolabadmin

This research shows that Trichoderma hypoxylon, a beneficial fungus used in agriculture, produces different versions of antifungal compounds called epidithiodiketopiperazines (ETPs) to fight various harmful fungi. By deleting genes responsible for modifying these compounds, scientists found that different modifications work better against different pathogens—some modifications are more effective against mold fungi while others work better against grain pathogens. This demonstrates that the fungus uses chemical diversity as a strategy to protect crops from multiple threats.

Different metabolite profiles across Penicillium roqueforti populations associated with ecological niche specialisation and domestication

mycolabadmin

This study examined how different populations of the blue cheese fungus Penicillium roqueforti produce varying amounts of toxic and beneficial compounds depending on their environment. Cheese-making strains were found to produce fewer toxins than strains from spoiled food and lumber, likely due to selective breeding for safer products. The research identified specific genetic mutations that prevent cheese strains from producing certain toxins, helping explain why some cheese strains are safer than others.

Comparative gene expression analysis in closely related dermatophytes reveals secondary metabolism as a candidate driver of virulence

mycolabadmin

A strain of fungal skin pathogen (Trichophyton benhamiae var. luteum) is spreading rapidly among guinea pigs and people in Europe, but scientists didn’t understand why it was more contagious than closely related strains. Researchers compared gene activity in four related fungal species and found that the epidemic strain produces higher levels of toxic compounds called secondary metabolites. These compounds help the fungus escape the body’s immune system and cause infection more effectively than in less dangerous relatives.

Microbe Profile: Streptomyces formicae KY5: an ANT-ibiotic factory

mycolabadmin

Scientists discovered a special bacterium called Streptomyces formicae living in ant nests in Africa that produces powerful antibiotics effective against dangerous drug-resistant bacteria and fungi. This bacterium has the genetic potential to make at least 45 different antimicrobial compounds, though most are not currently being produced under standard laboratory conditions. Using advanced gene-editing techniques like CRISPR, researchers are working to activate these hidden pathways to discover new medicines. This research demonstrates how exploring bacteria in nature can lead to finding new antibiotics to treat serious infections.

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

mycolabadmin

Researchers sequenced the complete genome of Lei Wan (Gerronema lapidescens), a medicinal mushroom used in Chinese traditional medicine for treating parasites and digestive issues. The study reveals the mushroom’s genetic makeup, including 15,847 genes and over 3 million methylation marks that may control gene expression. They identified 67 gene clusters that could produce medicinal compounds and 521 enzymes for breaking down organic matter. This genetic blueprint will help scientists understand how to cultivate this threatened species sustainably and develop its health benefits.

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

mycolabadmin

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.

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

mycolabadmin

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.

Research Keyword: biosynthetic gene clusters