gene expression – Page 6

Targeted metabolomic and transcriptomic reveal the regulatory network of ultrasound on polyphenol biosynthesis in tender coconut flesh during storage

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Researchers studied how ultrasound treatment affects the polyphenolic compounds (natural antioxidants) in coconut flesh during storage. By analyzing both the chemicals and genes involved, they found that ultrasound helps preserve important polyphenols like catechin and epicatechin by controlling the expression of genes that break them down. This discovery could help extend the shelf life of tender coconut products and maintain their nutritional value.

Morphological and molecular development of Terfezia claveryi ectendomycorrhizae exhibits three well-defined stages

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This study tracked how desert truffles form a beneficial partnership with plant roots over 10 weeks, identifying three distinct stages with different structures and genetic activity patterns. Researchers used microscopy and gene analysis to understand how the fungus gradually colonizes the root system, starting with growth in soil, then spreading between root cells, and finally penetrating inside cells. The findings reveal that specific fungal and plant genes are active at different stages, particularly those involved in breaking down plant cell walls. This research helps explain how desert truffles can be cultivated more effectively for food production.

Transcriptomic changes in the PacC transcription factor deletion mutant of the plant pathogenic fungus Botrytis cinerea under acidic and neutral conditions

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Gray mold is a common fungal disease affecting many plants, and it survives by adjusting to different pH levels in plant tissues. Scientists studied a specific protein called PacC that acts like a switch controlling which genes turn on or off based on acidity levels. By comparing normal fungi to mutants without this protein, researchers identified hundreds of genes that help the fungus adapt and cause disease, offering insights into how to potentially combat this agricultural problem.

Genotype-by-genotype interactions reveal transcription patterns underlying resistance responses in Norway spruce to Heterobasidion annosum s.s

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This study examined how different types of Norway spruce trees respond to infection by a fungus that causes root rot. Researchers found that the spruce tree’s genetics are more important than the fungus’s virulence in determining disease severity. Resistant tree clones activate specific defense genes early in infection, particularly genes related to pathogen recognition, while susceptible trees mount a delayed and broader response. Understanding these genetic differences could help with breeding more resistant trees for forests.

Transcriptome analysis of Ochratoxin A (OTA) producing Aspergillus westerdijkiae fc-1 under varying osmotic pressure

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This research studied how salt concentration affects the production of ochratoxin A, a toxic substance produced by the fungus Aspergillus westerdijkiae that contaminates foods like coffee and grapes. Using advanced genetic analysis, scientists found that moderate salt levels (20 g/L) increase the fungus’s ability to produce this toxin by affecting specific genes. The findings help explain why OTA contamination is more common in salty foods like cured meats and suggest new ways to prevent this contamination and protect food safety.

Inhibitive effect of Urginea epigea methanolic extract and silver/zinc oxide nanoparticles on Aspergillus and aflatoxin production

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Researchers tested whether a plant called Urginea epigea could stop the growth of a dangerous fungus (Aspergillus flavus) that produces aflatoxins, which can harm humans and animals. The plant extract completely stopped fungus growth at high concentrations and significantly reduced the production of toxins by turning off the genes responsible for toxin production. This suggests that plant-based treatments could offer a natural alternative to synthetic chemical fungicides for protecting food from contamination.

Optimized Protocol for RNA Isolation from Penicillium spp. and Aspergillus fumigatus Strains

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Scientists developed an improved method for extracting RNA from common mold fungi like Penicillium and Aspergillus. The study compared two extraction techniques and found that using a mechanical bead-beater device combined with a chemical solvent called chloroform produced the best results. This optimized method yields high-quality RNA suitable for studying gene expression in these fungi and can be easily used in regular laboratory settings.

Transcription factor FfMYB15 regulates the expression of cellulase gene FfCEL6B during mycelial growth of Flammulina filiformis

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This study explores how mushrooms break down cellulose to grow. Researchers found that a protein called FfMYB15 acts as a master switch that turns on the gene for an enzyme (cellulase) needed to digest cellulose in the Flammulina filiformis mushroom. By controlling this enzyme, FfMYB15 helps the mushroom grow faster and more efficiently on cellulose-rich materials used in cultivation.

Morphogenesis, starvation, and light responses in a mushroom-forming fungus revealed by long-read sequencing and extensive expression profiling

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Researchers created a detailed genetic instruction manual for a common mushroom species called Coprinopsis cinerea. Using advanced sequencing technology, they identified all the genes and precisely mapped where genes start and stop, what controls them, and how they respond to light and hunger. This improved genetic map reveals how mushrooms form fruiting bodies and survive changing environmental conditions, providing a valuable resource for understanding mushroom biology and improving mushroom cultivation.

Integrated Transcriptomics–Proteomics Analysis Reveals the Response Mechanism of Morchella sextelata to Pseudodiploöspora longispora Infection

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White mold disease is a major problem for morel mushroom farmers in China. Researchers identified the fungus causing this disease and studied how morel cells defend themselves. Using advanced molecular techniques, they found that morel cells respond to infection by changing their cell membranes and walls, and by activating protective proteins that fight oxidative stress. This research helps explain how the disease damages morels and could lead to developing stronger, disease-resistant mushroom varieties.

Research Keyword: gene expression