The combined application of corn steep liquor and myo-inositol enhanced the salt stress resistance of crops

1: The harm of salt stress

Salt stress has been one of the major threats to global food security. Taking cabbage as an example, salt stress caused Na+ to flood into cabbage cells, resulting in osmotic imbalance and ion toxicity. In addition, it also restricts plant growth by limiting photosynthesis and reducing enzyme activity, leading to crop yield reduction, quality reduction and even death.

At present, improving plant tolerance by applying protective agents is generally regarded as an effective strategy to reduce the effects of salt stress on plant growth. Corn steep liquor can be used as a cost-effective protective agent, providing an inexpensive and sustainable solution to salt stress problems.

2: Why can Corn steep liquor be used as an protective agent?

Corn Steep Liquor is a natural corn extract, containing soluble protein, amino acids, vitamins, minerals nutrients and other bio-active molecules. The active substances in Corn Steep Liquor have a positive effect on promoting the growth and recovery of plants.

Corn steeping is a beneficial source of phenolic antioxidants, phenolic compounds can improve crop quality, color, flavor and stress resistance, and can effectively alleviate plant oxidative stress damage to cells under salt stress.

Corn Steep Liquor can be applied alone to reduce the adverse effects of salt stress on plant photosynthesis, or combined with myo-inositol. Myo-inositol and Corn Steep Liquor have synergistic effects. Combined application enhances their respective advantages and makes full use of the nutrient supply capacity of Corn Steep.

3: Synergistic effect of Corn Steep Liquor and myo-inositol

Combined application of Corn steep and myo-inositol can significantly promote the growth and stress resistance of crops, which is mainly achieved by increasing photosynthetic pigments, maintaining osmotic balance and ion balance, and can effectively repair the damage caused by salt stress.

Photosynthetic pigments:

Under salt stress, chlorophyll synthesis was inhibited and chlorophyll degrading enzymes were activated. This significantly reduced the amount of photosynthetic pigments (including chlorophyll a, chlorophyll b, and carotenoids) in cabbage. This damages the photosynthesis of crops and impedes the growth and development of plants. However, the combined application of Corn steep liquor and myo-inositol can greatly increase the photosynthetic pigment content of plants and reduce the cell damage caused by salt stress.

Ion balance:

Salt stress environment can lead to the imbalance of Na ions and other ions in plants, resulting in ion toxicity. The combined application of Corn steep liquor and myo-inositol can significantly increase the content of Mg and Ca and other ions in crops, reduce the ratio of Na ion to Ca\Mg\K ions, reduce the ion toxicity and maintain the ion balance in crops.

Osmotic balance:

Soluble sugar and soluble protein can maintain the osmotic balance of crops. Salt stress can significantly decrease the content of both. Corn steep liquor contains a large number of soluble proteins in the form of free amino acids and active peptides, which can be quickly absorbed and utilized by plants. The combination of Corn steep liquor and myo-inositol can regulate the accumulation of some osmoregulatory substances in plants, and then increase the content of soluble sugar and soluble protein in plants to counteract the effect of salt stress.

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