Bacillus thuringiensis - Wikipedia
Bacillus thuringiensis (or Bt) is a gram-positive, soil-dwelling bacterium, the most commonly used biological pesticide worldwide. B. thuringiensis also occurs naturally in the gut of caterpillars of various types of moths and butterflies , as well on leaf surfaces, aquatic environments, animal feces, insect-rich environments, flour mills and ...
<i>Bacillus thuringiensis</i> (<i>Bt</i>) Fact Sheet - NPIC
Bt is a bacterium that is found naturally in soils throughout the world. To reproduce, Bt makes spores that grow into new bacteria. Bt spores have proteins that are toxic to insect larvae when eaten. 2 Because Bt comes from a natural source, it is called a biopesticide .
Bacillus thuringiensis (Bt) | Britannica
Bacillus thuringiensis (Bt), soil-dwelling bacterium that naturally produces a toxin that is fatal to certain herbivorous insects. The toxin produced by Bacillus thuringiensis (Bt) has been used as an insecticide spray since the 1920s and is commonly used in organic farming.
Bacillus thuringiensis - Cornell University
2015年2月25日 · Bacillus thuringiensis (Bt) is a bacterium that was first identified by S. Ishiwata in 1901 in Japanese silkworms presenting flacherie, or flaccid disease. It was later scientifically described and named by E. Berliner in Thüringen, Germany (Knowles 1994) .
Bacillus thuringiensis (Bt)-based biopesticide: Navigating success ...
2024年12月1日 · Bacillus thuringiensis (Bt) is effectively used as microbial biopesticide and widely utilized for controlling insect pests (do Nascimento et al., 2022). This bacterium, belonging to the Bacillaceae family, is Gram positive and forms spores, naturally found in various soil types and environment (Singh et al., 2024).
Bacillus thuringiensis – frequently referred to by its initials of Bt – is a naturally occurring, ubiquitous species of spore-forming, rod-shaped bacterium that is used as a biological pesticide for insect control. Bacteria in the genus Bacillus commonly occur in soils, and most types with insecticidal activity have been isolated from soil samples.
Bacillus Thuringiensis - an overview | ScienceDirect Topics
Bacillus thuringiensis (Bt) is a rod-shaped, spore-forming, gram-positive, and aerobic bacteria that produces a protein crystal (the Bt δ-endotoxin) during bacterial spore formation that is capable of causing lysis of gut cells when consumed by susceptible insects (Gill et al., 1992).
Bacillus Thuringiensis - an overview | ScienceDirect Topics
Bacillus thuringiensis (Bt) is an aerobic, spore-forming bacterium from the Bacillus cereus group that is distinguished due to its capacity to produce δ-endotoxins that have insecticidal activity. δ-Endotoxins are produced as crystalline inclusions during the sporulation phase [4].
Plant-Associated Bacillus thuringiensis and Bacillus cereus: …
2023年11月30日 · Currently, in B. cereus-group bacteria, Bacillus thuringiensis Berliner (Bt) is one of the most studied microorganisms—one of the Alpha and Omega of the modern biological control strategy. Bt-based pesticides account for up to 75% of the global bioinsecticide sales market and about 4% of all insecticides .
Bacillus thuringiensis: a century of research, development and ...
2011年2月25日 · Bacillus thuringiensis (Bt) is a soil bacterium that forms spores during the stationary phase of its growth cycle. The spores contain crystals, predominantly comprising one or more Cry and/or Cyt proteins (also known as δ-endotoxins) that have potent and specific insecticidal activity.