Use of gamma-aminobutyric acid to improve plant temperature stress tolerance

A technology of aminobutyric acid and high temperature stress, which is applied in the field of γ-aminobutyric acid to improve the temperature stress resistance of plants, and achieves the effects of clear resistance to adversity, high activity, and easy treatment

Active Publication Date: 2011-12-28
CHINA AGRI UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The Huanghuaihai region, the main wheat producing area in my country, is affected by the tropical monsoon. The maximum daily temperature in the later stage of wheat growth is often above 30°C, accompanied by dry and hot winds, which can cause more than 30% reduction in wheat production; Low temperature, high temperature during the flowering and filling period, and low temperature at the spring cotton seedling stage in North China seriously affect the production and development of crops, which in turn leads to reduced yield or even no harvest

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  • Use of gamma-aminobutyric acid to improve plant temperature stress tolerance
  • Use of gamma-aminobutyric acid to improve plant temperature stress tolerance
  • Use of gamma-aminobutyric acid to improve plant temperature stress tolerance

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0021] Embodiment 1, GABA seed soaking improves the high temperature tolerance of wheat seedlings

[0022] 1. Experimental method

[0023] The material is wheat, and the variety is winter wheat Kyoto 40 (National Crop Germplasm Conservation Center).

[0024] Winter wheat Kyoto 40 is carried out following four kinds of treatments respectively:

[0025] A. After soaking the wheat seeds in clean water for 24 hours, cultivate them with vermiculite and sandy soil (volume ratio 7:3), and control the temperature: 25°C during the day (14 hours) and 20°C at night (10 hours). Cultivate at this temperature until C and D treatments are sampled at the same time.

[0026] B. After soaking the wheat seeds in 0.5mM GABA aqueous solution for 24 hours, cultivate them with vermiculite and sand (volume ratio 7:3), and control the temperature: 25°C during the day (14 hours) and 20°C at night (10 hours). Cultivate at this temperature until C and D treatments are sampled at the same time.

[002...

Embodiment 2

[0037] Embodiment 2, the influence of GABA treatment on wheat yield and quality under high temperature stress

[0038] 1. Experimental method

[0039] The material is wheat, the variety is Zhongyou 9507 (Institute of Crop Research, Chinese Academy of Agricultural Sciences), the test site is Shangzhuang Experimental Station, Haidian District, China Agricultural University, and the cultivation and management are carried out according to conventional methods.

[0040] The following four treatments were carried out on Zhongyou 9507:

[0041] A. Spray the leaves evenly with clean water during the flowering period.

[0042] B. During the flowering stage, the aqueous solution with a concentration of 0.01 mM GABA is used to uniformly spray the leaf surface.

[0043] C, the leaf surface is evenly sprayed with clear water during the flowering stage; the wheat filling stage (10 days after flowering-23 days after flowering) is subjected to high temperature stress treatment for 2 weeks, an...

Embodiment 3

[0051] Embodiment 3, GABA improves the low temperature stress tolerance ability of cotton seedlings

[0052] 1. Experimental method

[0053] The material is cotton, the variety is Zhongmian 45 (Cotton Research Institute, Chinese Academy of Agricultural Sciences), the seeds are soaked in water for 24 hours, and cultivated in plastic pots with flower soil and vermiculite (volume ratio: 7:3), with 4 plants per pot. The test was carried out in a light incubator, the light time was 14 hours, the day (12 hours) was 28°C, the night (12 hours) was 24°C, and the light intensity was 400μmol.m -2 .s -1 , relative humidity 66%.

[0054] 10 days after emergence, the cotton 45 was subjected to the following three treatments respectively, and the light time, intensity and relative humidity of each treatment were the same as above:

[0055] A. Spray clear water on the leaves of cotton, treat them at 20°C after 3 days, and take samples after 3 days.

[0056] B. Spray clear water on the lea...

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Abstract

The invention discloses a new application of gamma-aminobutyric acid. The application is the application of gamma-aminobutyric acid in improving the temperature stress tolerance of plants. The method for improving the temperature stress tolerance of plants is to treat plants with gamma-aminobutyric acid, and the treatment method is seed soaking and / or foliage spraying. The invention also discloses the application of gamma-aminobutyric acid in promoting plant growth, and / or increasing plant yield, and / or improving plant quality. Experiments have proved that using a certain concentration of GABA through seed treatment and foliar spraying can improve the tolerance of crops, reduce the damage caused by high temperature, low temperature and other temperature stress, and reduce yield loss.

Description

technical field [0001] The invention relates to a new application of gamma-aminobutyric acid for improving the ability of plants to withstand temperature stress. Background technique [0002] γ-aminobutyric acid (γ-aminobutyric acid, GABA) is an important four-carbon non-protein amino acid in organisms, which widely exists in prokaryotes and eukaryotes. In animals, it is a major inhibitory neurotransmitter in the central nervous system (Christensen, H.N. (1994) J. Exp. Biol. 196, 297-305). In plants, it widely exists in plants and plant organs. Under normal growth conditions, the content of plant GABA is 0.03-2.00 μmol g -1 FW. Under certain biotic and abiotic stress conditions, including drought, waterlogging, temperature stress, hypoxia, UV radiation, pests and diseases, mechanical damage, etc., can cause rapid and large accumulation of GABA in plants (Satyanarayan, V. and Nair , P.M., 1990, Phytochemistry, 29, 367-375). [0003] In agricultural production, it is ofte...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): A01N37/46A01P21/00A01G7/06A01H3/04
Inventor 段留生李召虎王晓冬谢备涛王汉霞谭伟明田晓莉翟志席
Owner CHINA AGRI UNIV
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