Bacillus thuringiensis-based nanopesticides for crop protection

Devi, P. S. Vimala; Duraimurugan, P.; Chandrika, K.

doi:10.1016/b978-0-12-815829-6.00010-3

Cited by 24 publications

(10 citation statements)

References 30 publications

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“…3.4.4. Dried bioaerosols: Aerosol characterization from source to study Similar issues described for liquid generated bioaerosols exist for laboratory generated bioaerosols from materials such as dried bacterial or fungal spores, pollen, and dust-associated endotoxins (Thorne 1994;Kim and Je 2012;Afanou et al 2014;Vimala Devi, Duraimurugan, and Chandrika 2019). Natural bioaerosols cover the whole size range of aerosols, from a few nanometers up to 100 mm, with many of the largest sizes due to the attachment to fragments of biotic or abiotic material (L€ ondahl 2014;Clauß 2015).…”

Section: Liquid Bioaerosol Characteristics: Loadingmentioning

confidence: 98%

Natural sources and experimental generation of bioaerosols: Challenges and perspectives

Alsved

Bourouiba

Duchaine

et al. 2019

Aerosol Science and Technology

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Experimental aerosol generation methods aim to represent natural processes; however, the complexity is not always captured and unforeseen variability may be introduced into the data. The current practices for natural and experimental aerosol generation techniques are reviewed here. Recommendations for best practice are presented, and include characterization of starting material and spray fluid, rational selection of appropriate aerosol generators, and physical and biological characterization of the output aerosol. Reporting of bioaerosol research should capture sufficient detail to aid data interpretation, reduce variation, and facilitate comparison between research laboratories. Finally, future directions and challenges in bioaerosol generation are discussed.

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Section: Liquid Bioaerosol Characteristics: Loadingmentioning

confidence: 98%

Natural sources and experimental generation of bioaerosols: Challenges and perspectives

Alsved

Bourouiba

Duchaine

et al. 2019

Aerosol Science and Technology

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“…Recent studies have shown that the use of biocompatible titania and silica nanoparticles promoted the attachment and colonization of PGPMs, which resulted in plant biomass accumulation and growth improvements in stressful conditions (Timmusk et al, 2018;Fetsiukh et al, 2020). The development of nanoformulations containing Bt (or Bt-derived compounds) also holds great potential in increasing the shelf-life, efficacy and persistence in the field of these biopesticides (Devi et al, 2019). The development of nanobiofertilizers and nano-biopesticides will certainly be a step ahead in the innovative field of sustainable agriculture (Kumari and Singh, 2020).…”

Section: Future Outlooksmentioning

confidence: 99%

Realities and hopes in the application of microbial tools in agriculture

Batista

Singh

2021

Microbial Biotechnology

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Summary The use of microbial tools to sustainably increase agricultural production has received significant attention from researchers, industries and policymakers. Over the past decade, the market access and development of microbial products have been accelerated by (i) the recent advances in plant‐associated microbiome science, (ii) the pressure from consumers and policymakers for increasing crop productivity and reducing the use of agrochemicals, (iii) the rising threats of biotic and abiotic stresses, (iv) the loss of efficacy of some agrochemicals and plant breeding programs and (v) the calls for agriculture to contribute towards mitigating climate change. Although the sector is still in its infancy, the path towards effective microbial products is taking shape and the global market of these products has increased faster than that of agrochemicals. Promising results from using microbes either as biofertilizers or biopesticides have been continually reported, fuelling optimism and high expectations for the sector. However, some limitations, often related to low efficacy and inconsistent performance in field conditions, urgently need to be addressed to promote a wider use of microbial tools. We propose that advances in in situ microbiome manipulation approaches, such as the use of products containing synthetic microbial communities and novel prebiotics, have great potential to overcome some of these current constraints. Much more progress is expected in the development of microbial inoculants as areas such as synthetic biology and nano‐biotechnology advance. If key technical, translational and regulatory issues are addressed, microbial tools will not only play an important role in sustainably boosting agricultural production over the next few decades but also contribute towards other sustainable development goals, including job creation and mitigation of the impacts of climate change.

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“…In addition, this strategy also allows for the release of more specific products, because they have the direct presence of the toxin that will have a toxic effect on the organism. 80,81 The use of nanoencapsulation techniques or other techniques related to nanotechnology for Bt is still very small in relation to microencapsulation. However, some works are found in the literature.…”

Section: Encapsulation Strategies For Bmentioning

confidence: 99%

“…The protection of these protein complexes is an important strategy, because toxins play a central role in the mortality of the target organisms. In addition, this strategy also allows for the release of more specific products, because they have the direct presence of the toxin that will have a toxic effect on the organism. , …”

Section: Encapsulation Strategies For B Thuringiensismentioning

confidence: 99%

Encapsulation Strategies forBacillus thuringiensis: From Now to the Future

Oliveira

Fraceto

Bravo

et al. 2021

J. Agric. Food Chem.

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Bacillus thuringiensis (Bt) has been recognized for its high potential in the control of various agricultural pests. Developments in micro/nanotechnology have opened new perspectives for the production of more efficient formulations that can overcome some obstacles associated with its use in the field, such as formulation instability and loss of activity as a result of the degradation of pesticidal protein by its exposure to ultraviolet radiation, among other problems. This review describes current studies and recent discoveries related to Bt and processes for the encapsulation of Bt derivatives, such as Cry pesticidal proteins. Different techniques are described, such as extrusion, emulsion, spray drying, spray cooling, fluidized bed, lyophilization, coacervation, and electrospraying to obtain micro- and nanoparticulate systems. It is noteworthy that products based on microorganisms present less risk to the environment and non-target organisms. However, systematic risk assessment studies of these new Bt biopesticides are necessary, considering issues, such as interactions with other organisms, the formation of toxic secondary metabolites, or the interspecific transfer of genetic material. Given the great potential of these new formulations, a critical assessment is provided for their future use, considering the technological challenges that must be overcome to achieve their large-scale production for efficient agricultural use.

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Bacillus thuringiensis-based nanopesticides for crop protection

Cited by 24 publications

References 30 publications

Natural sources and experimental generation of bioaerosols: Challenges and perspectives

Natural sources and experimental generation of bioaerosols: Challenges and perspectives

Realities and hopes in the application of microbial tools in agriculture

Encapsulation Strategies forBacillus thuringiensis: From Now to the Future

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