Bacillus velezensis is a beneficial, gram-positive, rod-shaped bacterium known for its plant growth-promoting and biocontrol properties. It’s an aerobic, endospore-forming species found in various environments, including soil, water, and plant roots. Bacillus velezensis strains are known for producing secondary metabolites, such as cyclic lipopeptides and polyketides, which contribute to their ability to suppress pathogens, promote plant growth, and even induce systemic resistance in plants.
Key Characteristics of Bacillus velezensis:
Gram-positive, rod-shaped, aerobic, and endospore-forming:These are the defining characteristics of Bacillus velezensis, placing it within the Bacillus family.
Ubiquitous in nature:It’s found in diverse environments, making it a versatile bacterium for various applications.
Plant growth promotion:Strains of B. velezensis are known to stimulate plant growth through various mechanisms, including the production of growth-promoting hormones, phosphate solubilization, and nitrogen fixation.
Biocontrol agent:It effectively suppresses the growth of plant pathogens, including bacteria, fungi, and nematodes, making it a valuable biocontrol agent.
Secondary metabolite production:B. velezensis produces a range of secondary metabolites with antimicrobial and plant growth-promoting properties, including cyclic lipopeptides like surfactin and fengycin, and polyketides like macrolactin.
Induced systemic resistance:Some strains can trigger induced systemic resistance in plants, enhancing their defense against future pathogen attacks.
Harmless to humans and animals:It is generally considered non-pathogenic and safe for human and animal health.
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