Medicago pseudomonas strain capable of producing ACC (1-aminocyclopropane-1-carboxylate) deaminase and application of medicago pseudomonas strain

Abstract

The invention discloses a medicago pseudomonas strain capable of producing ACC (1-aminocyclopropane-1-carboxylate) deaminase and application of the medicago pseudomonas strain, and relates to a medicago pseudomonas strain and application thereof. The pseudomonas (pseudomonas sp.) MJM-9 is preserved in the general microorganism center of the China microorganism culture preservation management committee in 26th July, 2012, and the preservation number of the pseudomonas MJM-9 is CGMCC NO.6294. The medicago pseudomonas strain containing the ACC deaminase is used as bacterial manure for growing crops. The medicago pseudomonas strain can generate the ACC deaminase, secrete auximone IAA (indole acetic acid), synthesize siderophores, reduce the concentration of ethylene inside a plant under the condition of environmental stress, promote the plant to grow fast, particularly promote growth and development of a root system of the plant, and increase utilization rate of fertilizers. Besides, when the strain is applied to agricultural production, growth of plants can be promoted, yield of crops can be increased, and stress resistance of the crops is improved.

Description

technical field [0001] The invention relates to a strain of Pseudomonas alfalfa and its application. Background technique [0002] Alfalfa (Medicago spp.) is a perennial leguminous forage widely planted in the world. It has the reputation of "the king of forage" and has a cultivation history of more than 2,000 years in my country. Alfalfa has high nutritional value, rich in crude protein, vitamins and minerals, relatively complete amino acid composition, salt-alkali resistance, drought resistance, barren resistance, strong growth adaptability, is a high-quality forage grass, and can improve land utilization at the same time , Improve soil fertility. With wide ecological adaptability and stable productivity, it plays a huge role in my country's agricultural production and ecological economic construction. [0003] Alfalfa is a moderately saline-tolerant legume that grows well in neutral or slightly saline soils. When the soil salt content is 0.2-0.3% and the pH value is 7....

AI Technical Summary

Problems solved by technology

However, some fungi cannot be purely cultured, the production cycle of the fungal agent is long, the cost is large, the inoculation technology is difficult to implement, and it cannot be sown, but a large number of its host plants can only be transplanted, and the inoculation effect is unstable under natural conditions. This restricts its practical application in a large area

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