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Method for inhibiting absorption and transport of metal nanoparticles by rice

A metal nanoparticle, rice technology, applied in the fields of botanical equipment and methods, fertilizer mixtures, liquid fertilizers, etc., can solve the problem that the impact of metal nanoparticles has not been reported, and achieve the effect of reducing absorption and transport, simple operation, and fast method.

Inactive Publication Date: 2019-02-01
DONGHUA UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the effect of iron coating on the root surface on the uptake and transport of metal nanoparticles by plants has not been reported.

Method used

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  • Method for inhibiting absorption and transport of metal nanoparticles by rice
  • Method for inhibiting absorption and transport of metal nanoparticles by rice

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0034] Select 20-day-old rice seedlings with consistent growth and transfer them to distilled water for 12 hours. Weigh a certain amount of FeSO 4 ·7H 2 O dissolved in deionized water to prepare 10, 20, 30, 40, 80mg / LFe 2+ solution. The rice seedlings treated with distilled water were transferred to the iron film induction solution and cultivated for 24 hours. Use 0.1mmol / L NaOH or HCl to adjust the pH value of the iron plaque induction solution to 5.5. After the iron film was induced to form, the plants were rinsed 3 times with deionized water, and then placed in an aqueous solution for 6 hours to remove residual Fe on the root surface. 2+ . Then they were cultured in normal nutrient solution for 24 hours, and then the rice plants were exposed to a nutrient solution containing a series of concentrations of copper oxide nanoparticles (CuO NPs, 0, 5, 10, 50, 100 mg / L) for growth. The same treatment was carried out with rootless iron-coated rice for comparison.

[0035] T...

Embodiment 2

[0039] Select 21-day-old rice seedlings with consistent growth and transfer them to distilled water for 18 hours. Weigh a certain amount of FeSO 4 ·7H 2 O was dissolved in deionized water to prepare 20mg / LFe 2+ solution. The rice seedlings treated with distilled water were transferred to the iron film induction solution and cultivated for 30 hours. Use 0.1mmol / L NaOH or HCl to adjust the pH value of the iron plaque induction solution to 5.0. After the iron film was induced to form, the plants were rinsed 3 times with deionized water, and then placed in an aqueous solution for 6 hours to remove residual Fe on the root surface. 2+ . Then put it into the normal nutrient solution and cultivate it for 30 hours, and then expose the rice plants to the nutrient solution containing 100mg / L CuO NPs for growth. The same treatment was carried out with rootless iron-coated rice for comparison.

[0040]The plants after 14 days of treatment were harvested, the rice roots were thorough...

Embodiment 3

[0043] Select 22-day-old rice seedlings with consistent growth and transfer them to distilled water for 24 hours. Weigh a certain amount of FeSO 4 ·7H 2 O was dissolved in deionized water to prepare 20mg / LFe 2+ solution. The rice seedlings treated with distilled water were transferred to the iron film induction solution and cultivated for 24 hours. Use 0.1mmol / L NaOH or HCl to adjust the pH value of the iron plaque induction solution to 4.5. After the iron film was induced to form, the plants were rinsed 3 times with deionized water, and then placed in an aqueous solution for 6 hours to remove residual Fe on the root surface. 2+ . Then put it into the normal nutrient solution and cultivate it for 36 hours, and then expose the rice plants to the nutrient solution containing 100mg / L CuO NPs for growth. The same treatment was carried out with rootless iron-coated rice for comparison.

[0044] The plants after 14 days of treatment were harvested, the rice roots were thoroug...

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Abstract

The invention provides a method for inhibiting absorption and transport of metal nanoparticles by rice. The method comprises the following steps: (1) cultivating rice seedlings; (2) cultivating the rice seedlings in distilled water for 12-24 hours; (3) preparing an iron film induction liquid, and adjusting the pH value of the iron film induction liquid to 4.5-5.5; (4) transferring the rice seedlings cultured in the step 2 to the iron film induction liquid prepared in the step 3 for 24-36 hours; (5) after induction formation of iron films are performed, washing roots of the rice seedlings cleanwith distilled water, and then cultivating the washed rice seedlings in a normal nutrient solution for 2-3 days; and (6) transplanting the rice seedlings to soil, wherein metal nanoparticle related agrochemicals are applied to the soil or to be applied to the soil later. Through the method, on the premise of ensuring normal growth of the rice, absorption and transport of the metal nanoparticles by the rice can be reduced simply, rapidly and effectively.

Description

technical field [0001] The invention relates to a method for inhibiting rice from absorbing and transporting metal nanoparticles, and belongs to the technical field of farmland safety production. Background technique [0002] Currently, the wide application of metal nanoparticles in industry, agriculture, medical and commercial fields has raised concerns about their safety. Due to the special physical and chemical properties of metal nanoparticles, metal nanoparticles can induce higher physiological toxicity and genotoxicity compared with common metal materials. In fact, large amounts of metal nanoparticles are released into the environment throughout their life cycle, posing a potential threat to human and animal health. In particular, metal nanoparticles can enter agricultural fields through the application of biosolids or the implementation of environmental remediation nanotechnology. Moreover, metal nanoparticles have been widely used in fungicides, insecticides, herbi...

Claims

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Application Information

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IPC IPC(8): A01G31/00C05G3/00
CPCA01G31/00C05D9/02C05G5/23
Inventor 彭程沈忱思柳建设陈思
Owner DONGHUA UNIV
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