Research Keyword: heavy metal stress

The Effect of Plant Growth Promoting Rhizobacteria Bacillus thuringiensis LKT25 on Cadmium Accumulation and Physiological Responses in Solanum nigrum L

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Scientists discovered a beneficial bacterium called Bacillus thuringiensis LKT25 that helps black nightshade plants absorb cadmium from contaminated soil more effectively. When this bacterium is applied to the plant roots, it boosts plant growth and activates the plant’s natural defense systems against heavy metal toxicity. In tests with moderately contaminated soil, the bacterial treatment improved cadmium removal by nearly 50%, making it a promising solution for cleaning up polluted agricultural lands.

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Molecular mechanisms of metal toxicity and transcriptional/post-transcriptional regulation in plant model systems

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Plants face serious damage from heavy metals like cadmium, arsenic, and chromium in contaminated soils and water. Scientists are discovering how plants defend themselves through changes in gene expression, special proteins that trap metals, and modifications to their DNA that control stress response genes. Understanding these natural defense mechanisms could help us develop crops that survive in polluted environments and remove heavy metals from contaminated areas, making food safer and protecting human health.

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The Importance of Humic Acids in Shaping the Resistance of Soil Microorganisms and the Tolerance of Zea mays to Excess Cadmium in Soil

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This research explores how humic acids, which are natural organic substances found in soil, can help protect plants and soil bacteria from cadmium, a toxic heavy metal. When cadmium contaminated soil, the application of humic acid preparation called Humus Active promoted the growth of specialized bacteria that can tolerate and break down cadmium. As a result, corn plants grew better and maize biomass increased significantly when the soil was treated with the humic preparation, suggesting this is a practical solution for farming on contaminated land.

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Bioaccumulation and physiological changes in the fruiting body of Agaricus bisporus (Large) sing in response to cadmium

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This research shows that button mushrooms (Agaricus bisporus) can absorb and accumulate harmful cadmium from contaminated soil. When exposed to cadmium stress, the mushrooms increase their protective chemical defenses, including antioxidant enzymes and organic acids, to survive the toxic conditions. The study demonstrates that these edible mushrooms could potentially be used as a practical and cost-effective method to clean up cadmium-polluted soils.

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Nitric Oxide-Mediated Regulation of Chitinase Activity and Cadmium Sequestration in the Response of Schizophyllum commune to Cadmium Stress

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A culinary mushroom called Schizophyllum commune can be harmed by cadmium pollution. When exposed to cadmium, the fungus produces nitric oxide, which causes enzymes called chitinases to become more active. These active enzymes break down the mushroom’s cell wall, allowing more cadmium to accumulate and ultimately damage the fungus’s growth. By reducing nitric oxide levels, scientists may be able to protect this mushroom from cadmium poisoning.

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