Research Topic: heat stress

Effects of dietary Fibrafid as phytogenic supplementation in standard and nutrient-reduced diets on breast meat quality, carcass traits, histopathology, and feed efficiency in heat-stressed broilers

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This research tested a plant-based feed additive called Fibrafid in broiler chickens raised in hot conditions. When included at 0.25% in their diet, Fibrafid improved meat quality by increasing its ability to retain moisture and enhancing tenderness, while also supporting growth even when using lower-nutrition diets. The additive maintained healthy intestines and improved feed efficiency, offering a practical and sustainable solution for poultry farmers in hot climates.

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Transcriptional response of mushrooms to artificial sun exposure

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As climate change causes more trees to die and forest canopies to open up, mushrooms on the forest floor are exposed to more intense sun and heat. Researchers exposed Shiitake mushrooms to artificial sunlight and found that the mushrooms activate protective molecular mechanisms, particularly heat-shock proteins, to cope with the stress. This suggests that mushrooms have built-in defenses against harsh sun exposure, though scientists are not yet sure if these defenses are strong enough to protect mushroom reproduction under real-world climate change conditions.

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Belowground Communities in Lowlands Are Less Stable to Heat Extremes Across Seasons

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Scientists studied how soil organisms respond to extreme heat waves at different elevations and seasons. They found that lowland soil communities are more vulnerable to heat stress than highland communities, with springtime communities recovering better than summer communities. The study reveals that timing matters: extreme heat events in spring allowed soil organisms to bounce back, but summer heat events caused lasting damage.

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Integrated Transcriptomic and Proteomic Analyses Reveal Molecular Mechanism of Response to Heat Shock in Morchella sextelata

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Morels are delicious edible mushrooms, but growing them is challenging when temperatures get too high. Scientists studied two morel strains to understand how they respond to heat stress by examining their genes and proteins. They found that heat-tolerant strains activate special protective proteins and metabolic pathways, with one strain particularly good at activating a protein called Rsp5 that helps other protective proteins work better. These findings could help farmers grow better morels even as climate change makes temperatures warmer.

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New insights into temperature-impacted mycovirus-fungus interactions regulated by a microRNA in Lentinula edodes

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When shiitake mushrooms are infected with a virus and exposed to heat stress, the virus replicates more aggressively, which makes the mushrooms more susceptible to heat damage and competitive fungi. Researchers discovered that a small regulatory RNA molecule called led-milR-21 plays a key role in this process by suppressing the mushroom’s heat defense mechanisms when the virus is present. This discovery is important because it shows how viruses can exploit heat stress to overcome fungal defenses, with implications for mushroom cultivation in a warming climate.

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