7 results about "Membrane lipid peroxidation" patented technology

This invention discloses a method for enhancing the high-temperature resistance of citrus through exogenous spraying of naringin, belonging to the field of agricultural technology. The method involves preparing naringin into a formulation and spraying it exogenously onto the leaves of citrus plants. Experiments show that after treatment with naringin, phenotypic damage such as wilting and curling of citrus seedling leaves under high-temperature stress is significantly alleviated; the maximum photochemical efficiency of photosystem II (Fv / Fm) is significantly increased; electrolyte leakage rate and malondialdehyde content are significantly reduced; and the accumulation of hydrogen peroxide and superoxide anions is effectively inhibited. This invention utilizes naturally sourced naringin to significantly enhance the tolerance of citrus to high-temperature stress through multiple mechanisms, including maintaining photosynthetic system function, protecting cell membrane integrity, inhibiting membrane lipid peroxidation, and scavenging reactive oxygen species. Furthermore, the method is simple to operate, environmentally friendly, and low-cost, making it suitable for stress-resistant citrus cultivation.

This invention discloses the application of the cotton GhATHB-7 protein and its encoding gene in regulating plant salt tolerance. This invention is the first to identify the association between the cotton GhATHB-7 protein and its encoding gene and salt stress, and confirms that silencing this gene reduces the salt stress tolerance of cotton. This invention also discovers and demonstrates for the first time that the cotton GhATHB-7 protein enhances plant salt tolerance by increasing the membrane lipid peroxidation product MDA and reducing chlorophyll used for photosynthesis. The cotton GhATHB-7 protein and its encoding gene regulating plant salt tolerance in this invention have important value in enhancing plant salt tolerance and in breeding.

The application of ceramide in the control of rice blast fungus falls within the field of biological control. This invention relates to the application of ceramide in the control of rice blast fungus: a combination of ceramide and lipopeptides is used for the control of rice blast fungus. Exogenous addition of ceramide significantly enhances the stress effect of lipopeptides on rice blast fungus. It also enhances the abnormal accumulation of glycogen and lipid droplets in conidia, promotes the bursting of ROS, and increases intracellular ceramide and calcium... 2+ The invention increases the content of malondialdehyde (MDA) in mycelium, enhances membrane lipid peroxidation, and decreases ergosterol content. Furthermore, it inhibits the expression of ergosterol synthesis genes, UPR target genes, and sphingolipid metabolism-related genes. This invention develops a highly efficient natural agent against rice blast by combining exogenous Cer with lipopeptides. This agent effectively reduces the pathogenicity of rice blast fungus and significantly inhibits its infection of rice, laying the foundation for the development of novel biological control agents.

The application belongs to the technical field of plant stress resistance regulation, and particularly relates to application of kynurenic acid in improving salt stress adaptability of cynodon dactylon. The application finds that, before and / or during salt stress, exogenous application of kynurenic acid to cynodon dactylon can significantly reduce the degree of oxidative stress (H2O2), the level of membrane lipid peroxidation (MDA) and the content of osmotic regulator substance proline, effectively relieve salt damage reaction and improve the adaptability of cynodon dactylon in a high-salt environment. The method is simple in operation, suitable for plant remediation and environmental protection planting in saline soil, and has a good application prospect.

Disclosed is the application of humic acid in improving the phytoremediation effect of heavy metals in water, and relates to the technical field of environmental ecological engineering. The invention discloses the application of humic acid in improving the phytoremediation effect of heavy metals in water, wherein the phytoremediation of heavy metals is to reduce the content of heavy metals in water by planting Vallisneria chinensis. Adding humic acid can slow down the chlorosis of Vallisneria vallissima leaves under heavy metal poisoning and increase the accumulation of heavy metals in Vallisneria vallissima leaves and roots. At the same time, it can also reduce the leaching ability of heavy metals in water, enhance the enzyme activities related to active oxygen metabolism in plants by stimulating the synthesis of protein and enzymes in various organs of plants, reduce the MDA concentration in plants, adjust the active oxygen content in plants, reduce the degree of membrane lipid peroxidation and enhance the resistance of plants to heavy metals.

This invention relates to a method for promoting the germination of buckwheat seeds under cadmium stress and alleviating cadmium toxicity during the seedling stage. The method includes treating buckwheat seeds with a melatonin reagent before germination. The method involves contacting the plant seeds with a melatonin solution at a concentration of 100-500 μmol / L. The method provided by this invention can effectively improve the germination potential and germination rate of buckwheat seeds under cadmium stress, enabling uniform and rapid germination. This invention solves the important problem of how to ensure normal germination of buckwheat in cadmium-contaminated soil in agricultural production and has significant application value in production. This is likely because pretreatment with a melatonin reagent can induce the expression of antioxidant enzyme activity, scavenge the large number of free radicals generated by cadmium stress, alleviate oxidative stress, reduce oxidative damage, and maintain a low level of membrane lipid peroxidation in the seeds, thereby promoting normal seed germination.

The application discloses application of L-carnitine in improving cold tolerance of plants and belongs to the technical field of plant stress tolerance regulation and stress resistance agent application. The application utilizes L-carnitine to improve the PS II maximum quantum yield (Fv / Fm) of Arabidopsis thaliana, enhances the stability of the photosynthetic system, reduces the damage of low temperature to the photosynthetic mechanism, simultaneously reduces the content of malondialdehyde (MDA), inhibits membrane lipid peroxidation, maintains the integrity of the cell membrane, promotes the synthesis of proline and soluble sugar, improves the cell osmotic regulation capacity and strengthens the cold resistance. The application overcomes the defects of the existing genetic improvement, physical regulation and chemical regulation technologies, such as narrow application range, high cost and poor universality, realizes effective response to sudden low-temperature stress of crops in a large area of fields and provides a new technical path for plant cold stress prevention and control.