Pseudomonas aeruginosa bacterial strain capable of producing phytocidal active substance and crude toxin preparation method of pseudomonas aeruginosa bacterial strain

A Pseudomonas aeruginosa, crude toxin technology, applied in the direction of microorganism-based methods, biochemical equipment and methods, chemicals for biological control, etc., can solve undiscovered problems
CN103361284AInactive Publication Date: 2013-10-23董金皋 +1
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Patent Information

Authority / Receiving Office
CN · China
Current Assignee / Owner
董金皋
Publication Date
2013-10-23
Estimated Expiration
Not applicable · inactive patent

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Abstract

The invention relates to a pseudomonas aeruginosa bacterial strain (serial number being CB-4) and a crude toxin preparation method thereof, which belong to the field of applying microorganisms to agricultural plant protection. The strain crude toxin has a strong inhibition effect for weeds including crab grass, amaranthus retroflexus, barnyard grass, green bristlegrass, rhodes grass and the like, and in particular respectively has IC50 reaching 299.25mg.L<-1> and 210.11mg.L<-> to seed germination root stalk length, and has the characteristics of being safe and environment-friendly, harmless to crops and the like.
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Description

technical field

[0001] The invention relates to a method for controlling weeds by a Pseudomonas aeruginosa strain (numbered CB-4) and its secondary metabolites, belonging to the field of microorganisms applied to agricultural plant protection. Background technique

[0002] There are more than 30,000 species of weeds in the world, of which more than 1,800 species can cause damage to various agricultural crops, causing a loss of about 9.7% of the total crop output every year. Chemical herbicides are commonly used to control weeds at present, but their disadvantages are becoming more and more prominent after long-term use, such as resistance of weeds, pollution of water and soil, and difficult degradation of residues. It has become a top priority to develop new herbicides that are pollution-free and safe. Biological herbicides are favored by people because of their small impact on plants other than target weeds, small environmental negative effects, and high safety. unique ad...

Claims

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