Application of hydroxy carboxylic acid compound in preventing and treating plant diseases

A hydroxycarboxylic acid and plant disease technology, which is applied in the field of plant disease prevention and control, can solve problems such as agricultural production losses, and achieve the effect of less residue, good safety, and definite control effect

Active Publication Date: 2020-12-22
CHINA AGRI UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

For example, downy mildew of various melons and grapes, late blight of potato and tomato,

Method used

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  • Application of hydroxy carboxylic acid compound in preventing and treating plant diseases
  • Application of hydroxy carboxylic acid compound in preventing and treating plant diseases
  • Application of hydroxy carboxylic acid compound in preventing and treating plant diseases

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0042] Inhibition of embodiment 1 hydroxycarboxylic acid compound on the formation of anthracis appresses

[0043] 1. Bacteria to be tested: 20 anthrax strains in total, namely: grape anthracnose, sorghum anthracnose, camellia oleifera, apple anthracnose, pear anthracnose, strawberry anthracnose, capsicum oxysporum, capsicum anthracnose , deep split bamboo root seven (8270) anthracnose bacteria, deep split bamboo root seven (8069) anthrax bacteria, bovine anthracnose bacteria, huanghuali anthracnose bacteria, cucumber anthracnose bacteria, Luo Han Guo anthracnose bacteria, red camellia (9053) anthracnose bacteria, Red camellia (9059) anthracnose bacteria, cherry anthracnose bacteria, cruciferous vegetable anthracnose bacteria, walnut anthracnose bacteria, corn anthracnose bacteria.

[0044] 2. Test method:

[0045] 1) Anthracis bacteria produce conidia in large quantities: spot the anthrax bacteria strain to be activated on the potato agarose medium PDA, and place it in a con...

Embodiment 2

[0063] The inhibition of embodiment 2 hydroxy carboxylic acid compound to blast fungus appressorium formation

[0064] 1. Bacteria to be tested: Magnaporthe oryzae P131.

[0065] 2. Test method:

[0066] 1) Magnaporthe oryzae produces a large number of conidia: Spot the to-be-activated Magnaporthe oryzae strain on the tomato oat plate OTA, and place it in a constant temperature light incubator at 28°C for cultivation. After 3-5 days, the colonies that grow on the surface of the petri dish are sufficient. The colonies on the OTA were fully interrupted, and then spread evenly on a new oatmeal plate with tomato juice, and cultured in a constant temperature and light incubator at 28°C. When the new hyphae can be seen growing out of the surface of the culture medium with the naked eye, gently interrupt the mycelium with a cotton swab, rinse it with water, and dry it. Cover the petri dish with a single layer of gauze, and culture it under light at 28°C for about 48 hours, that is...

Embodiment 3

[0074] Inhibition of embodiment 3 hydroxy carboxylic acid compounds on the formation of appresses of Spirosporium rubbery YN42

[0075] 1. Bacteria to be tested: Colletotrichum acutatum YN42.

[0076] 2. Test method:

[0077] 1) Anthracis bacteria produce conidia in large quantities: spot the anthrax bacteria strain to be activated on the potato agarose medium PDA, and place it in a constant temperature light incubator at 28°C for cultivation. After 3-5 days, the colonies that grow on the surface of the petri dish are sufficient. Wash off all the hyphae on the surface of the culture medium with sterilized water, rinse them, dry them in the air, and cultivate them under light at 28°C for about 48 hours, and a large number of conidia can be seen on the surface of the PDA.

[0078] 2) Preparation of anthrax spore suspension: wash the spores on the spore-forming plate with sterile water, filter with three layers of filter paper, count with a hemocytometer, and adjust the concent...

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Abstract

The invention discloses an application of a hydroxy carboxylic acid compound in preventing and treating plant diseases. The hydroxyl carboxylic acid compound is selected from compounds represented byformulas I, II, III and IV, and isomers, hydrates or salts thereof. The hydroxy carboxylic acid compound has a remarkable effect in the aspect of inhibiting the activity of fungus or oomycete appressorium formation, can be used for preventing plant diseases such as rice blast, anthracnose, gray mold, downy mildew and phytophthora, and is free of obvious phytotoxicity and good in safety. Compared with an existing compound for preventing and treating the plant diseases such as rice blast, anthracnose, gray mold, downy mildew and phytophthora, the hydroxyl carboxylic acid compound has the characteristics of good prevention effect, environmental protection, no toxicity, low residue and safety, and as the compound is known and widely used, the raw materials are easy to obtain, the synthesis process is mature, and environmental toxicology and effects are well-studied. Therefore, the advantages of being convenient, easy to obtain, environment-friendly and safe are achieved.

Description

technical field [0001] The invention relates to a new application of hydroxycarboxylic acid compounds, in particular to the application of the compound in preventing and controlling plant diseases. Background technique [0002] The hydroxycarboxylic acid compounds represented by formulas I, II, III and IV are known compounds and are widely used in chemical industry, food, medicine, materials and other fields. Some compounds also have good antibacterial effect, such as the representative material in this class of compounds such as the compound 10-hydroxyl-2-decenoic acid in formula V has better effect on Escherichia coli, Bacillus subtilis, Staphylococcus aureus inhibitory effect. However, the use of such hydroxycarboxylic acid compounds for the control of plant diseases such as rice blast, anthracnose, downy mildew, phytophthora and botrytis has not been reported. [0003] [0004] Diseases caused by plant filamentous eukaryotic pathogens account for about 70-80% of pla...

Claims

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Application Information

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IPC IPC(8): A01N37/36A01P3/00
CPCA01N37/36A01N37/40
Inventor 彭友良张溪郭红超倪汉文窦道龙王晓丹
Owner CHINA AGRI UNIV
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