CN-122004236-A - Application of nano silicon dioxide in relieving stress of polystyrene micro-plastics on hibiscus

Abstract

The invention relates to the technical field of plant conditioning agents, in particular to application of nano silicon dioxide in relieving stress of polystyrene micro-plastics on hibiscus. The invention discovers that the influence of polystyrene micro-plastic on the water cottonrose hibiscus stress can be relieved to a certain extent when the nano silicon dioxide is treated, the intervention of the nano silicon dioxide leads to the increase of melatonin secretion, and the combined action of the nano silicon dioxide and the melatonin leads to more obvious effect and presents synergistic effect. The nano silicon dioxide directly acts on the cell surface to form a protective layer, so that the adsorption and damage of PS-MPs to the cell are reduced, the synthesis of melatonin is promoted, and a melatonin signal path is activated. The activated melatonin signal pathway further regulates the activity of key enzymes for carbon and nitrogen metabolism, promotes carbon and nitrogen metabolism, improves the synthesis and accumulation of carbohydrates and proteins, enhances the activity of an antioxidant system, clears active oxygen, and reduces oxidative damage.

Inventors

• ZHU SIXI
• LV YUTIAN
• LIN SHAOXIONG

Assignees

• 贵州民族大学

Dates

Publication Date

20260512

Application Date

20260204

Claims (10)

1. 1. Use of nanosilica or a combination of nanosilica and melatonin for alleviating the stress of polystyrene microplastic on water lotus, said water lotus stress comprising one or more of: 1) inhibiting the growth of the water lily, 2) inhibiting the carbon and nitrogen metabolism of the water lily, 3) inhibiting the antioxidation activity of the water lily, and 4) reducing the melatonin content in the water lily and/or inhibiting the melatonin signal path in the water lily.
2. 2. The use of claim 1, wherein inhibiting the growth of hibiscus comprises reducing one or more of fresh weight, root length, leaf area, and plant height of hibiscus.
3. 3. The use according to claim 1, characterized in that the nanosilica promotes the synthesis of melatonin and/or activates the melatonin signal pathway.
4. 4. The use according to claim 1, wherein the nanosilica promotes carbon nitrogen metabolism of hibiscus, and increases synthesis and accumulation of carbohydrates and proteins.
5. 5. The use according to claim 1, wherein the nanosilica enhances the antioxidant system activity of hibiscus, scavenges active oxygen, and reduces oxidative damage.
6. 6. A method for relieving stress of polystyrene micro-plastics on hibiscus is characterized by comprising the step of applying nano-silica suspension to hibiscus, wherein the particle diameter of the nano-silica is 10-30 nm.
7. 7. The method of claim 6, wherein the method of applying comprises spraying.
8. 8. The method according to claim 7, wherein the spraying amount of each plant of hibiscus is 4.8 mg based on the mass of nano-silica.
9. 9. The method according to claim 6, wherein the preparation method of the nano-silica suspension comprises the steps of mixing nano-silica with water, sequentially performing ultrasonic treatment, volume fixing and stirring to obtain the nano-silica suspension.
10. 10. The method of claim 9, wherein the power of the ultrasonic treatment is 150W, the temperature is 25 ℃ and the time is 30min, and the stirring time is 5min.

Description

Application of nano silicon dioxide in relieving stress of polystyrene micro-plastics on hibiscus Technical Field The invention relates to the technical field of plant conditioning agents, in particular to application of nano silicon dioxide in relieving stress of polystyrene micro-plastics on hibiscus. Background Carbon and nitrogen metabolism are indispensable important components in plant physiological process, and are interdependent and restricted. Carbon metabolism provides energy, reducing agents and a carbon skeleton for nitrogen metabolism, which provides enzymes and photosynthetic pigments for carbon metabolism. The degree of coordination of carbon and nitrogen metabolism is directly related to plant growth, development, yield formation and quality. When plants are subjected to external stress, maintaining the stability of carbon nitrogen metabolism plays a vital role in plant survival and growth. Water hibiscus (Pistia stratiotes L.) is a very critical member in aquatic ecosystems and has remarkable significance for maintaining the ecological balance of water bodies. However, as the pollution of microplastic in the environment becomes more serious, the growth and development process, physiological property expression and in-vivo homeostasis balance of hibiscus are all subjected to great challenges, wherein polystyrene microplastic (PS-MPs) can inhibit the growth and metabolism of hibiscus. But at present, substances which can relieve the inhibition of the growth and metabolism of the hibiscus are lacking in polystyrene microplastic. Disclosure of Invention In order to solve the problems, the invention provides application of nano silicon dioxide in relieving stress of polystyrene micro-plastics on hibiscus. The invention discovers that the nano silicon dioxide can relieve the stress of polystyrene micro-plastics on the water hibiscus and promote the growth and metabolism of the water hibiscus. In order to achieve the above object, the present invention provides the following technical solutions: The invention provides an application of nano-silica or a combination of nano-silica and melatonin in relieving stress of polystyrene micro-plastics on water lotus, wherein the water lotus stress comprises one or more of the following: 1) inhibiting the growth of the water lily, 2) inhibiting the carbon and nitrogen metabolism of the water lily, 3) inhibiting the antioxidation activity of the water lily, and 4) reducing the melatonin content in the water lily and/or inhibiting the melatonin signal path in the water lily. Preferably, the inhibiting the growth of the hibiscus comprises reducing one or more of fresh weight, root length, leaf area and plant height of the hibiscus. Preferably, the nano-silica promotes synthesis of melatonin and/or activates melatonin signaling pathway. Preferably, the nano silicon dioxide promotes carbon and nitrogen metabolism of the hibiscus, and improves synthesis and accumulation of carbohydrates and proteins. Preferably, the nano silicon dioxide enhances the activity of an antioxidant system of the hibiscus, eliminates active oxygen and reduces oxidative damage. The invention provides a method for relieving stress of polystyrene micro-plastics on hibiscus, which comprises the step of applying nano silicon dioxide suspension to hibiscus, wherein the particle diameter of the nano silicon dioxide is 10-30 nm. Preferably, the method of application comprises spraying. Preferably, the spraying amount of each plant of the hibiscus is 4.8 mg based on the mass of the nano silicon dioxide. Preferably, the preparation method of the nano silicon dioxide suspension comprises the steps of mixing nano silicon dioxide with water, sequentially carrying out ultrasonic treatment, constant volume and stirring to obtain the nano silicon dioxide suspension. Preferably, the power of the ultrasonic treatment is 150W, the temperature is 25 ℃ and the time is 30min, and the stirring time is 5min. The beneficial effects are that: PS-MPs have a significant negative impact on the growth of hibiscus, carbon nitrogen metabolism, antioxidant system and melatonin signaling pathway. The invention discovers that the negative effects can be relieved to a certain extent when the nano silicon dioxide is treated, the intervention of the nano silicon dioxide leads to the increase of melatonin secretion, and the combined action of the nano silicon dioxide and the melatonin leads to more remarkable effect and shows synergistic effect. The nano silicon dioxide directly acts on the cell surface to form a protective layer, so that the adsorption and damage of PS-MPs to the cell are reduced, the synthesis of melatonin is promoted, and a melatonin signal path is activated. The activated melatonin signal pathway further regulates the activity of key enzymes for carbon and nitrogen metabolism, promotes carbon and nitrogen metabolism, improves the synthesis and accumulation of carbohydrates and proteins, enhances the activ