New use of gamma-aminobutyric acid in increasing plant temperature-stress resistance capacity

A technology of aminobutyric acid and high temperature stress, which is applied in the field of γ-aminobutyric acid to improve the ability of plants to withstand temperature stress, can solve the problems of affecting crop production and development, wheat production reduction, and yield reduction, and achieves clear resistance to adversity, simple treatment, highly active effect

Active Publication Date: 2009-04-29
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 whe

Method used

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  • New use of gamma-aminobutyric acid in increasing plant temperature-stress resistance capacity
  • New use of gamma-aminobutyric acid in increasing plant temperature-stress resistance capacity
  • New use of gamma-aminobutyric acid in increasing plant temperature-stress resistance capacity

Examples

Experimental program
Comparison scheme
Effect test

Example Embodiment

[0019] Example 1. GABA seed soaking improves the high temperature resistance of wheat seedlings

[0020] 1. Experimental method

[0021] The material is wheat, and the variety is winter wheat Kyoto 40 (National Crop Germplasm Preservation Center).

[0022] The winter wheat Kyoto 40 was subjected to the following four treatments:

[0023] A. After soaking the wheat seeds in water 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). Incubation was continued at this temperature until treatments C and D were sampled simultaneously.

[0024] B. After soaking the wheat seeds with 0.5mM GABA aqueous solution for 24 hours, cultivate 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). Incubation was continued at this temperature until treatments C and D were sampled simultaneously.

[0025...

Example Embodiment

[0035] Example 2. Effects of GABA treatment on wheat yield and quality under high temperature stress

[0036] 1. Experimental method

[0037]The material was wheat, and the variety was Zhongyou 9507 (Crop Research Institute, Chinese Academy of Agricultural Sciences). The experimental site was Shangzhuang Experimental Station, Haidian District, China Agricultural University.

[0038] The following four treatments were performed on Zhongyou 9507:

[0039] A. During the flowering period, spray the leaves evenly with clean water.

[0040] B. The leaves were sprayed uniformly with an aqueous solution with a concentration of 0.01 mM GABA during flowering.

[0041] C. During the flowering period, the foliage is uniformly sprayed with water; the wheat grain filling period (10 days after flowering - 23 days after flowering) is subjected to high temperature stress treatment for 2 weeks, and the temperature is 48 ° C during the day (12 hours) / night (12 hours) 29°C.

[0042] D. In the...

Example Embodiment

[0049] Example 3. GABA improves the low temperature stress tolerance of cotton seedlings

[0050] 1. Experimental method

[0051] The material was cotton, and the variety was Zhongmian 45 (Cotton Research Institute, Chinese Academy of Agricultural Sciences). The seeds were soaked in water for 24 hours, and cultivated in plastic pots with flower soil and vermiculite (volume ratio of 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 400 μmol.m -2 .s -1 , 66% relative humidity.

[0052] 10 days after emergence, the following three kinds of treatments were respectively carried out to the Chinese cotton 45, and the illumination time, intensity and relative humidity of each treatment were the same as above:

[0053] A. Spray clean water on cotton leaves, treat at 20°C after 3 days, and take samples after 3 days of treatment.

[0054] B. S...

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Abstract

The invention discloses a novel purpose of gamma-aminobutyric acid in the application of increasing the temperature stress resistant ability of plants. The method of increasing the temperature stress resistant ability of plants is to use gamma-aminobutyric acid to treat plants by soaking and/or foliage spraying. The invention further discloses the applications of gamma-aminobutyric acid on promoting growth, and/or, increasing productivity, and/or increasing quality of plants. Experiments show that it is able to, through the processes, such as seed treatment, foliage spraying using the gamma-aminobutyric acid of a certain concentration, increase the endurance of crops, decrease hazard from temperature stress, such as high and low temperatures, and reduce loss of production.

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 often...

Claims

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Application Information

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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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