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Application of exogenous glutamic acid in alleviating cadmium stress of rice and reducing cadmium content of rice plants

A glutamic acid and rice technology, applied in the fields of application, rice cultivation, botany equipment and methods, etc., to achieve the effects of improving oxidative stress, increasing rice biomass, and reducing the accumulation of cadmium

Inactive Publication Date: 2019-08-09
ZHEJIANG UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

At present, there are relatively few studies on how to solve the heavy metal stress (especially Cd stress) in rice, and the research involving glutamate in response to heavy metal Cd stress in rice has not been reported.

Method used

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  • Application of exogenous glutamic acid in alleviating cadmium stress of rice and reducing cadmium content of rice plants
  • Application of exogenous glutamic acid in alleviating cadmium stress of rice and reducing cadmium content of rice plants
  • Application of exogenous glutamic acid in alleviating cadmium stress of rice and reducing cadmium content of rice plants

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Experimental program
Comparison scheme
Effect test

Embodiment 1

[0053] 1. Test materials and treatment

[0054] Select rice seeds with the same size and full grains (the rice variety used is Oryza sativaL.ssp.japonica cv.Nipponbare, cadmium-sensitive type), and disinfect them with 2% sodium hypochlorite solution for 15 minutes, then rinse them with distilled water 5 times, and then sterilize them at room temperature. Soak the seeds in distilled water for 24 hours. After 4 days of germination in an artificial incubator at 30 °C, the rice seedlings were transplanted into standard 1 / 2 MS liquid medium for culture, and placed in an automatic control growth chamber for culture. The growth chamber is set to light for 14 hours (30±2°C), dark for 10 hours (26±2°C), and relative humidity 40%-60%. When the rice seeds grow to 14 days, the seedlings with consistent growth are selected for transplanting.

[0055] The first group (Control), transplanted into the standard 1 / 2MS liquid medium without cadmium and glutamic acid, as the control (CK); the s...

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Abstract

The invention discloses application of exogenous glutamic acid in alleviating cadmium stress of rice and reducing cadmium content of rice plants. It is proved that by adding exogenous glutamic acid toa water culture solution for culturing rice seedlings, the exogenous glutamic acid has the effects of promoting the growth of rice under cadmium stress and reducing the toxicity of cadmium to the rice; under the cadmium stress, the biosynthesis of chlorophyll of the rice is improved, the biomass of the rice is increased, and oxidative stress induced by cadmium is alleviated. Furthermore, it is further found that the exogenous glutamic acid can inhibit the absorption and transport of cadmium, correspondingly the accumulation of cadmium in the rice plants is reduced, and the toxicity of cadmiumto rice is reduced.

Description

technical field [0001] The invention relates to the technical field of crop physiology, in particular to the application of exogenous glutamic acid in relieving rice cadmium stress and reducing rice plant cadmium content. Background technique [0002] Cadmium (Cd) is one of the ubiquitous heavy metals and toxic pollutants in nature. The accumulation of Cd can cause toxicity to animals, plants and microorganisms, and enter the human body through the food chain, affecting human health. Cd entering the plant will destroy the permeability of the plant cell membrane, inhibit the respiration, photosynthesis and enzyme activity of the plant, thereby reducing the quality and yield of the crop. [0003] The biological half-life of Cd is 10 to 30 years. As people age, the accumulation of Cd in the human body also increases. Even at low levels of Cd intake, it poses serious health risks. Excessive intake of Cd in the human body will be transmitted to various organs and tissues of th...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): A01G22/22A01G7/06
CPCA01G7/06A01G22/22
Inventor 蒋萌黄建中舒庆尧
Owner ZHEJIANG UNIV
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