Possible interference of Bacillus thuringiensis in the survival and behavior of Africanized honey bees (Apis mellifera)

Libardoni, Gabriela; Neves, Pedro Manuel Oliveira Janeiro; Abati, Raiza; Sampaio, Amanda Roberta; Costa-Maia, Fabiana Martins; Vismara, Edgar de Souza; Lozano, Everton Ricardi; Potrich, Michele

doi:10.1038/s41598-021-82874-1

Cited by 18 publications

(6 citation statements)

References 46 publications

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“…In a recent work, Libardoni and co-workers evaluated the effect of two main commercial formulations of Bt (Dipel and Xentari) on the survival and behavior of Africanized bees (Apis mellifera). The authors performed the bioassays on forage and newly emerged bees, by mixing the products in the feed.…”

Section: Future Prospectsmentioning

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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Section: Future Prospectsmentioning

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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“…The high consistency of the gut microbiota suggests they are all central to the honeybee’s welfare [ 110 ], making hosting them crucial and beneficial for the bees. Apart from the core set, many of the other common bee gut microbes, as Acinetobacter , Bartonella , Bacillus , Lactococcus , Frischella , Enterobacter and Commensalibacter , may have both beneficial and detrimental effects on honeybees themselves and on other taxa [ 44 , 45 , 55 , 64 , 65 , 111 – 115 ]. While honeybees act as hosts for these taxa, this association may not be reflected in any true ecosystem service.…”

Section: Discussionmentioning

confidence: 99%

“…both beneficial and detrimental effects on honeybees themselves and on other taxa [44,45,55,64,65,[111][112][113][114][115]. While honeybees act as hosts for these taxa, this association may not be reflected in any true ecosystem service.…”

Section: Plos Onementioning

confidence: 99%

Reconstructing the ecosystem context of a species: Honey-borne DNA reveals the roles of the honeybee

et al. 2022

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To assess a species’ impact on its environment–and the environment’s impact upon a species–we need to pinpoint its links to surrounding taxa. The honeybee (Apis mellifera) provides a promising model system for such an exercise. While pollination is an important ecosystem service, recent studies suggest that honeybees can also provide disservices. Developing a comprehensive understanding of the full suite of services and disservices that honeybees provide is a key priority for such a ubiquitous species. In this perspective paper, we propose that the DNA contents of honey can be used to establish the honeybee’s functional niche, as reflected by ecosystem services and disservices. Drawing upon previously published genomic data, we analysed the DNA found within 43 honey samples from Northern Europe. Based on metagenomic analysis, we find that the taxonomic composition of DNA is dominated by a low pathogenicity bee virus with 40.2% of the reads, followed by bacteria (16.7%), plants (9.4%) and only 1.1% from fungi. In terms of ecological roles of taxa associated with the bees or taxa in their environment, bee gut microbes dominate the honey DNA, with plants as the second most abundant group. A range of pathogens associated with plants, bees and other animals occur frequently, but with lower relative read abundance, across the samples. The associations found here reflect a versatile the honeybee’s role in the North-European ecosystem. Feeding on nectar and pollen, the honeybee interacts with plants–in particular with cultivated crops. In doing so, the honeybee appears to disperse common pathogens of plants, pollinators and other animals, but also microbes potentially protective of these pathogens. Thus, honey-borne DNA helps us define the honeybee’s functional niche, offering directions to expound the benefits and drawbacks of the associations to the honeybee itself and its interacting organisms.

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“…For example, under controlled laboratory conditions, dietary exposure of honey bee larvae and adults to Bt toxins ( Bt Cry9Ee and Bt Cry78Ba1) did not affect survival or larval weight, pollen or syrup consumption, or the core midgut bacterial structure and composition in adult honey bees ( Dai et al 2019 , Han et al 2021 ). In field bioassays, commercial Bt products (Dipel and Xentari) were proven to be safe for foragers and newly merged honey bees ( Libardoni et al 2021 ). In fact, the high frequency of honey bee harboring Bacillus species (mainly the B .…”

Section: Beneficial Bacteria Exhibiting Probiotic Potential In Afb Co...mentioning

confidence: 99%

Beneficial bacteria as biocontrol agents for American foulbrood disease in honey bees (Apis mellifera)

Yang

2023

Journal of Insect Science

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American foulbrood (AFB) is a cosmopolitan bacterial disease that affects honey bee (Apis mellifera) larvae and causes great economic losses in apiculture. Currently, no satisfactory methods are available for AFB treatment mainly due to the difficulties to eradicate the tenacious spores produced by the etiological agent of AFB, Paenibacillus larvae (Bacillales, Paenibacillaceae). This present review focused on the beneficial bacteria that displayed antagonistic activities against P. larvae and demonstrated potential in AFB control. Emphases were placed on commensal bacteria (genus Bacillus and lactic acid bacteria in particular) in the alimentary tract of honey bees. The probiotic roles lactic acid bacteria play in combating the pathogenic P. larvae and the limitations referring to the application of these beneficial bacteria were addressed.

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Possible interference of Bacillus thuringiensis in the survival and behavior of Africanized honey bees (Apis mellifera)

Cited by 18 publications

References 46 publications

Encapsulation Strategies forBacillus thuringiensis: From Now to the Future

Encapsulation Strategies forBacillus thuringiensis: From Now to the Future

Reconstructing the ecosystem context of a species: Honey-borne DNA reveals the roles of the honeybee

Beneficial bacteria as biocontrol agents for American foulbrood disease in honey bees (Apis mellifera)

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