Bacillus thuringiensis as a Biofertilizer and Biostimulator: a Mini-Review of the Little-Known Plant Growth-Promoting Properties of Bt

  • Ugur AzizogluEmail author
Review Article


Bacillus thuringiensis (Bt) is a gram-positive spore-forming soil microorganism. Because the insecticidal activities of Bt are well known, it has been used as a tool for insect pest control worldwide. The beneficial features of Bt are not limited to its role as an insecticide; it is also used to control phytopathogenic fungi via chitinolytic activity. Bt-related studies are mostly focused on its biocontrol properties. However, studies focusing on the biostimulation and biofertilizer features of Bt, including its interactions with plants, are limited. Bt is a successful endophyte in many plants and can directly promote their development or indirectly induce plant growth by suppressing diseases. Although there are various commercial biopesticide Bt-based products, there are no commercial Bt-based plant growth-promoting rhizobacteria products on the biofertilizer market. As novel Bt strain exploration increases, there will likely be new Bt-based products with powerful biofertilizer activities in the future. The objective of this paper is to review, discuss, and evaluate the exceptional features of Bt as a plant growth promoter.


Compliance With Ethical Standards

Conflict of interest

No potential conflict of interest was reported by the author.


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Authors and Affiliations

  1. 1.Department of Crop and Animal ProductionSafiye Cikrikcioglu Vocational School, Kayseri UniversityKayseriTurkey

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