| Salt-alkali stresses can seriously inhibite plant photosynthesis, growth and development, while silicon plays an important role in regulating plant growth under saline-alkali stresses. It is believed that silicon can effectively promote plant photosynthesis, reduce leaf transpiration and alleviate osmotic stress by promoting the synthesis of organic osmotic regulatory substances under saline-alkali stresses.Furthermore, silicon can prevent the excessive entry of sodium into plant cell and reduce the loss of potassium, which is important to maintain the balance of potassium to sodium in plant cell, thereby alleviating osmotic. At the same time, it can increase the activity of related antioxidant enzymes in plants, promote the synthesis of antioxidants, resist oxidative stress, and achieve the purpose of improving salt-alkali tolerance of plants. Finally, it is suggested that modern genetics, molecular biology, genomics, proteomics, metabolomics and traditional physiological and biochemical methods should be combined to reveal the mechanism of saline-alkaline tolerance of plants. |
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