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The efficacy of Bacillus licheniformis in planting industry

View: 7 Author: Site Editor Publish Time: 2023-11-14 Origin: site


Bacillus licheniformis is a species of the genus Bacillus, with a cell size of 0.8 μm x (1.5 to 3.5) μm. The cell shape and arrangement are rod-shaped and solitary; there are no poly-β-hydroxybutyrate particles in the cells and it is Gram-positive. bacilli. The colonies are flat, with uneven edges and white. A facultative anaerobic bacterium. Bacillus licheniformis has a unique biological oxygen-absorbing mechanism, which prevents the growth and reproduction of pathogenic bacteria, improves soil, and improves crop quality.

Characteristics of Bacillus licheniformis

1. Bacillus licheniformis exists in the form of spores and is highly resistant to stress and can withstand harsh granulation conditions such as high temperature and high pressure;

2. Bacillus licheniformis has a high number of viable bacteria and can resurrect quickly, forming a dominant bacterial population in a short period of time;

3. Bacillus licheniformis has strong biological activity and rich metabolites;

4. The addition of Bacillus licheniformis is low cost and has significant effects;

5. Bacillus licheniformis has no toxic side effects, no drug resistance, no residue, is efficient and environmentally friendly.

What effect does Bacillus licheniformis have on plants?

1. Effect on plants

  1. Inhibit the reproduction of pathogenic bacteria in the soil, prevent pathogenic bacteria from infecting the roots of plants, and reduce the incidence of insect pests and soil-borne diseases.
  2. Prevent the genetic diseases of the seeds themselves, improve the germination rate and seedling retention rate of the seeds, and increase the survival rate.
  3. Promote the growth of plants and roots, accelerate maturity and increase yield.

2. Effect on soil

  1. Decompose organic matter in the soil into humus and greatly improve soil fertility.
  2. Improve the soil, improve the aggregate structure, enhance the water and energy storage effects of the soil, increase the ground temperature, and alleviate obstacles to repeated cropping.
  3. Inhibit the growth and reproduction of harmful bacteria in the planting environment and reduce the incidence of various fungal diseases.

Effects of Bacillus licheniformis

Bacillus licheniformis inhibits the growth of pathogenic bacteria through antagonism

Bacillus licheniformis inhibits the growth and reproduction of pathogenic bacteria by secreting antibacterial metabolites such as surfactin, iturin, and subtilisin.

Bacillus licheniformis prevents pathogens from damaging crops through competition

The competitive effects of Bacillus licheniformis include competition for nutrients and competition for spatial sites. Bacillus licheniformis can compete with crop pathogenic bacteria for nutrients at their colonization sites, and can multiply and colonize in large quantities in the soil, plant rhizosphere, body surface and body, quickly occupying ecological niches, and effectively rejecting, preventing and interfering with the spread of pathogenic bacteria on plants. Colonization and infection, thereby achieving the effects of disease prevention and treatment.

Bacillus licheniformis directly kills pathogens through bacteriolysis

Bacillus licheniformis can produce chitinase, cellulase, glucanase and other lytic substances, which can digest mycelium, break and disintegrate pathogenic hyphae, and also dissolve the cell wall of pathogenic spores, leading to bacterial spores. The wall becomes perforated, deformed, and eventually the germs die.

Bacillus licheniformis can induce systemic resistance in plants and improve crop disease resistance

The flagellin and secreted secondary metabolites of Bacillus licheniformis can activate the jasmonic acid/ethylene signaling channel of crops, induce the production of resistant substances in crops, and enhance the resistance of crops to crop pathogens.

Bacillus licheniformis can promote crop growth

Bacillus licheniformis can produce gibberellic acid, cytokinin-like, auxin and other substances, which can significantly promote crop growth; Bacillus licheniformis can also fix nitrogen and phosphorus in the atmosphere, increase root nutrient absorption, and promote growth.