CN-121610367-B - Bulla Mao Keke strain SGSF1379 and application thereof

Abstract

A vesicle Mao Keke strain SGSF1379 and application thereof belong to the technical field of microorganism and biological control. In order to screen novel strains with high-efficiency and broad-spectrum inhibition activity on various fusarium, the invention separates a fungus SGSF1379 from forest litter in the small-Khingan area, and determines the strain SGSF1379 as a novel species of bulla Mao Keke (Herpotrichiellaceae) by combining morphological characteristics and molecular biological identification results. According to the invention, through an activity test experiment, the fermentation extract of the strain SGSF1379 has better antibacterial activity on fusarium oxysporum, fusarium solani and fusarium layering out. The novel strain SGSF and 1379 provided by the invention have certain theoretical and practical significance for preventing and treating fusarium diseases.

Inventors

• XU LIJIAN
• SONG XINYUE
• ZHANG DONGYE
• LIU JIANCONG
• YU HAOTONG
• ZHAN HUIMIN

Assignees

• 黑龙江大学

Dates

Publication Date

20260508

Application Date

20260128

Claims (3)

1. 1. A vesicle Mao Keke (Herpotrichiellaceae) strain SGSF and 1379 is characterized in that the preservation number is CCTCC NO: M20252444.
2. 2. The use of strain SGSF1379 of claim 1 to inhibit the growth of Fusarium, wherein the Fusarium is Fusarium oxysporum (Fusarium oxysporum), fusarium solani (Fusarium solani), or Fusarium solani (Fusarium proliferatum).
3. 3. The use according to claim 2, wherein the use is to inhibit the growth of fusarium by using a fermented extract of strain SGSF, 1379.

Description

Bulla Mao Keke strain SGSF1379 and application thereof Technical Field The invention belongs to the technical field of microorganism and biological control, and particularly relates to a bulla Mao Keke strain SGSF1379 and application thereof. Background Fusarium (Fusarium spp.) is a widely distributed group of phytopathogenic fungi that severely harms nearly 70% of crops worldwide. The fungus can produce various toxins, and after the fungus infects crops, the symptoms such as tissue ulceration, root rot, fruit and leaf rot and the like are caused, so that the crop yield and quality are seriously affected. Among them, root rot caused by fusarium is one of the major diseases in agricultural production, and various crops are susceptible to infection during the growth process. For example, fusarium root rot of plants such as soybean, cumin, etc. not only causes significant decrease in crop yield, reducing economic benefits, but also may threaten environmental safety and human health due to toxin accumulation. In order to cope with various plant diseases caused by fusarium, methods such as physical control, chemical control and biological control are mainly adopted at present. Although the chemical control effect is faster, the long-term use of the composition is easy to cause the problems of enhanced drug resistance of pathogenic bacteria, pesticide residues, environmental pollution and the like. Biological control is becoming a research hotspot (Hu Fengyuan, han Shaohua, sun Guohao, etc.) due to the advantages of environmental friendliness, safety to non-target organisms, human and livestock, biological disaster science, 1-8[2025-09-14]. Searching for biocontrol strains with antagonism to plant diseases by excavating fungus resources in nature has become an important strategy in the field of plant protection. The small blisters Mao Keke (Herpotrichiellaceae) are a class of ascomycota fungi widely distributed in the natural environment, most of which are saprophytic or symbiotic bacteria, and some of which may have the potential to antagonize plant pathogenic bacteria. Although this family of fungi plays an important role in the ecosystem, its application in biological control of plant diseases is still lacking. In the prior art, the biocontrol strain aiming at the fusarium diseases mainly comprises Trichoderma (Trichoderma spp.) and gliocladium (Gliocladium spp.) and the like, and the strains have certain control effects, but have narrow action spectrum and have poor synergistic inhibition effect on various fusarium. Therefore, novel and efficient biocontrol fungus resources are discovered from the nature, and the novel and efficient biocontrol fungus resources have important significance for enriching biological control means and promoting agricultural sustainable development, especially for strains with broad-spectrum inhibition activity on various fusarium. Disclosure of Invention In order to screen a novel strain with high-efficiency and broad-spectrum inhibition activity on various fusarium, the invention separates a fungus SGSF1379 from forest litter in the small-Khingan area, and determines the strain SGSF1379 as a novel species of bulls Mao Keke (Herpotrichiellaceae) by combining morphological characteristics and molecular biological identification results, wherein the strain is preserved in China center for type culture collection, with the preservation number of CCTCC NO: M20252444, the preservation date of 2025, 11 months and 3 days, and the preservation unit address of China, wuhan university. According to the invention, through an activity test experiment, the fermentation extract of the strain SGSF1379 has better antibacterial activity on Fusarium oxysporum (Fusarium oxysporum), fusarium solani (Fusarium solani) and Fusarium solani (Fusarium proliferatum). In order to solve the technical problems and achieve the corresponding technical effects, the invention provides the following technical scheme: The first object of the invention is to provide a vesicle Mao Keke (Herpotrichiellaceae) strain SGSF, 1379, which has a preservation number of CCTCC NO: M20252444. A second object of the present invention is to provide the use of the above strain SGSF, 1379, for inhibiting the growth of Fusarium including Fusarium oxysporum (Fusarium oxysporum), fusarium solani (Fusarium solani), fusarium layering (Fusarium proliferatum). In one embodiment of the invention, the use is to inhibit fusarium growth using a fermented extract of strain SGSF, 1379. The invention also provides application of the strain SGSF and 1379 in preventing and controlling plant diseases caused by Fusarium, wherein the Fusarium comprises Fusarium oxysporum (Fusarium oxysporum), fusarium solani (Fusarium solani) and Fusarium solani (Fusarium proliferatum). The invention also provides a biocontrol microbial agent, which contains the fermentation extract of the strain SGSF and 1379. The invention also provides application of the biocontrol