antioxidant enzymes – Page 2

Serendipita indica Enhances Drought Tolerance in Phoebe sheareri Seedlings by Improving Photosynthetic Efficiency, Stimulating the Antioxidant Defense System, and Modulating Hormone Synthesis

mycolabadmin

Scientists discovered that inoculating seedlings of Phoebe sheareri, a valuable Chinese tree species, with a special fungus called Serendipita indica significantly improves their ability to survive drought. The fungus colonizes plant roots and enhances photosynthesis, boosts the plant’s natural antioxidant defenses, and regulates growth hormones. This research suggests a practical and biological approach to improve seedling survival in nurseries and reforestation efforts, particularly in regions affected by drought and climate change.

Exogenous L-Arginine Enhances Pathogenicity of Alternaria alternata on Kiwifruit by Regulating Metabolisms of Nitric Oxide, Polyamines, Reactive Oxygen Species (ROS), and Cell Wall Modification

mycolabadmin

Researchers discovered that a specific nutrient called L-arginine paradoxically makes a fungus that causes black spot on kiwifruit more dangerous at low concentrations. The fungus uses this amino acid to trigger multiple survival mechanisms including producing protective molecules and enzymes that break down plant cell walls. However, at higher concentrations, L-arginine actually inhibits the fungus, suggesting it could be used as part of a disease control strategy.

Study on the inhibitory mechanism of fig leaf extract against postharvest Fusarium in melon

mycolabadmin

Researchers discovered that fig leaves contain natural compounds that can prevent fruit rot caused by Fusarium fungus in melons. When applied to infected melons, the fig leaf extract kills the fungus by damaging its cell membranes and overwhelming it with harmful molecules called reactive oxygen species. This natural treatment could replace chemical fungicides that harm the environment and leave residues on food, offering a safer way to preserve melons during transport and storage.

Response to Salt Stress of the Halotolerant Filamentous Fungus Penicillium chrysogenum P13

mycolabadmin

Scientists studied a special salt-loving fungus called Penicillium chrysogenum P13 that can survive in very salty environments like salt lakes. When exposed to high salt levels, the fungus activates protective mechanisms including special enzymes that neutralize harmful cellular damage. The research shows that the fungus handles salt stress by producing more of its own antioxidants and storing special compounds that protect its cells.

A Zn2-Cys6 transcription factor, TgZct4, reprograms antioxidant activity in the fungus Trichoderma guizhouense to defend against oxidative stress

mycolabadmin

Researchers discovered a key protein switch in a beneficial fungus called Trichoderma guizhouense that helps it survive harmful oxidative stress. This fungus is used as a natural pesticide to protect crops from disease. The protein, called TgZct4, acts like a master controller that turns on the fungus’s defense systems when it encounters damaging chemical stress, making it more resilient and effective at protecting plants.

Biocontrol of Fusarium solani: Antifungal Activity of Chitosan and Induction of Defence Enzymes

mycolabadmin

Chitosan, a natural substance made from shrimp and crab shells, effectively protects tomato plants from a dangerous fungal disease called Fusarium solani root rot. When applied to plants, chitosan directly damages the fungus and simultaneously strengthens the plant’s own defence systems through increased enzyme activity. This makes chitosan a safer, more sustainable alternative to conventional chemical fungicides while also promoting better plant growth.

Arbuscular Mycorrhizal Fungi-Assisted Phytoremediation: A Promising Strategy for Cadmium-Contaminated Soils

mycolabadmin

Cadmium contamination in farm soils poses serious threats to food safety and human health. Arbuscular mycorrhizal fungi (AMF) are beneficial fungi that form partnerships with plant roots and can significantly reduce the amount of cadmium that plants absorb from contaminated soil. These fungi work through multiple mechanisms including physically trapping cadmium in soil, improving plant nutrition and stress resilience, and enhancing the plant’s natural detoxification systems. This natural approach offers a sustainable and cost-effective strategy for cleaning up contaminated agricultural land.

A Zn2-Cys6 transcription factor, TgZct4, reprograms antioxidant activity in the fungus Trichoderma guizhouense to defend against oxidative stress

mycolabadmin

This research identifies a special protein called TgZct4 in a beneficial fungus called Trichoderma guizhouense that helps it survive harmful stress from hydrogen peroxide. When the fungus encounters oxidative stress, TgZct4 quickly activates and switches on genes that produce protective enzymes. This discovery helps scientists understand how this fungus can be such an effective biological pest control agent and could lead to improvements in using it as a natural alternative to chemical pesticides.

A Possible Involvement of Sialidase in the Cell Response of the Antarctic Fungus Penicillium griseofulvum P29 to Oxidative Stress

mycolabadmin

Scientists studied how a fungus from Antarctica called Penicillium griseofulvum survives in extremely cold conditions. They discovered that when exposed to cold temperatures, the fungus produces an enzyme called sialidase at higher levels, which helps it defend against damage caused by reactive oxygen species (harmful molecules). This response works alongside other protective enzymes, suggesting that sialidase is an important part of the fungus’s survival strategy in cold environments.

UV-Induced Mutants of Metarhizium anisopliae: Improved Biological Parameters, Resistance to Stressful Factors, and Comparative Transcriptomic Analysis

mycolabadmin

Scientists used UV light to create improved mutant strains of a fungus that naturally kills insect pests. The best mutant strain showed increased ability to survive harsh environmental conditions like heat and oxidative stress, while becoming more effective at infecting target pest insects. This improvement makes the fungus more practical for use as a natural pesticide in fields exposed to sunlight. Gene analysis revealed the mutant fungi enhanced certain protective proteins while reducing reliance on traditional antioxidant systems.

Research Keyword: antioxidant enzymes