In recent years, as environmental pollution has become more and more serious, it has affected the development of agriculture, and the enhancement of plant resistance has attracted more and more attention from farmers. In the face of this situation, potassium fulvic acid can significantly improve the stress resistance of plants, which is an effective solution. In the next step, we will explain its mechanism in detail for you.
Function: Enhance the stress resistance of plants;
Potassium fulvic acid can adjust plant physiological and ecological changes and enhance plant resistance to stress. The results showed that under the stress of temperature, water, salt, heavy metals, etc., potassium fulvic acid can enhance the activity of plant active oxygen metabolism-related enzymes (peroxidase, catalase, superoxide dismutase, etc.). ), reduce the membrane permeability of plant matter, adjust the active oxygen content in the plant body, reduce the degree of membrane lipid peroxidation, and maintain the rapid growth of plants. For example, potassium fulvic acid can improve the resistance of rice to water stress, mainly through the expression of the tonoplast water channel intrinsic protein gene OsTIP in rice roots. In addition, physical effects are also an important aspect of potassium fulvic acid in enhancing the ability of plants to resist water stress. Potassium fulvic acid forms humic acid aggregates on the surface of plant roots, root epidermal cells and new root hairs, which reduces root permeability and improves the drought resistance of plants.
Potassium fulvic acid improves the stress resistance of plants, not only by changing the morphology and physiological characteristics of plants, but also by changing their growth environment. Under salt damage conditions, potassium fulvic acid reduces the electrical conductivity of the soil medium, increases the content and compactness of soil aggregates, improves soil water holding capacity and cation exchange capacity, thereby promoting plant growth. The organic acids secreted by plant roots can destroy humic acid, causing it to release small molecules that can regulate the growth of individual plants, which in turn affects the expression of genes related to plant stress and the activity of enzymes. In addition, potassium fulvic acid can also reduce the adverse effects of biological stress on plants, mainly in inhibiting plant pathogenic bacteria. The results showed that potassium fulvic acid can reduce the survival rate of conidia of Alternaria and Fusarium oxysporum in soil, inhibit spore reproduction and hyphae elongation, and reduce plant disease rate.
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