<i>Bacillus</i>

Logan, Niall A.; Vos, Paul De

doi:10.1002/9781118960608.gbm00530

Cited by 97 publications

(76 citation statements)

References 591 publications

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“…Physiological profiling with API tests, and additional phenotyping, is a standardized way to describe new species or isolates of Bacillus (Logan & Berkeley, , ). The diversity of patterns within the genus is significant (Logan & De Vos, ). Here, we also reveal substantial differences even within the same species, among Bacillus VU‐DES13 and B. toyonensis type strain BCT‐7112 T .…”

Section: Discussionmentioning

confidence: 99%

Genome annotation and antimicrobial properties of Bacillus toyonensis VU‐DES13, isolated from the Folsomia candida gut

Agamennone¹,

Straalen

Brouwer³

et al. 2019

Entomologia Exp Applicata

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Antibiotic resistance necessitates the search for new bioactive compounds with novel mechanisms of action. Natural products derived from bacteria and fungi are widely used in the field of medicine and new environments can be explored as sources of antimicrobials. Bacteria associated with springtails have shown high inhibitory activity against pathogens. Here, we characterized a bacterial strain with high potential for antimicrobial activity, isolated from the gut of the springtail Folsomia candida Willem (Collembola: Isotomidae). The strain was characterized using the ‘analytical profile index’ and the ‘minimal inhibitory concentration’ assay to test for antibiotic resistance. Agar overlay and agar disk diffusion assays were used to test the inhibitory activity of the strain and its extract against a variety of pathogens, and reporter assays were used to investigate the mode of action. High‐performance liquid chromatography was used to analyze and fractionate the extract of bacterial culture, followed by additional assays on the fractions. The genome of the strain was screened for presence of antibiotic resistance genes and secondary metabolite gene clusters. The isolate was identified as Bacillus toyonensis Jiménez et al., but it displayed differences in metabolic profile when compared to the type species. The isolate was highly resistant to penicillin and inhibited the growth of a variety of pathogenic microorganisms. Genome analysis revealed an enrichment of resistance genes for β‐lactam antibiotics compared to the type isolate. Also, secondary metabolite clusters involved in the production of siderophores, bacteriocins, and nonribosomal peptide synthetases were identified. In conclusion, a unique Bacillus strain was isolated from the gut of F. candida, for which we provide evidence of inhibitory activity against an array of pathogens. This, coupled with high resistance to penicillin as substantiated by the presence of resistance genes, points to the potential of B. toyonensis VU‐DES13 to provide a new source of antimicrobial compounds.

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Section: Discussionmentioning

confidence: 99%

Genome annotation and antimicrobial properties of Bacillus toyonensis VU‐DES13, isolated from the Folsomia candida gut

Agamennone¹,

Straalen

Brouwer³

et al. 2019

Entomologia Exp Applicata

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“…Therefore, we used a large set of Bacillus strains isolated from a variety of habitats and the generalist aphid parasitoid Aphidius colemani. The genus Bacillus represents a heterogeneous group of ubiquitous Gram-positive bacteria that occupy diverse ecological systems and have been isolated from various habitats, including soil, water, dust, air, insects and plant-associated habitats such as roots, leaves, honeydew and nectar (Logan and De Vos 2009). Members of the genus Bacillus produce a wide array of volatiles (Kai et al 2009), some of which can promote plant growth without physical contact (Ping and Boland 2004) or have antimicrobial activity (Gao et al 2017).…”

Section: Introductionmentioning

confidence: 99%

Bacterial phylogeny predicts volatile organic compound composition and olfactory response of an aphid parasitoid

Goelen

Sobhy

Vanderaa

et al. 2020

Oikos

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There is increasing evidence that microorganisms emit a wide range of volatile compounds (mVOCs, microbial volatile organic compounds) that act as insect semiochemicals, and therefore play an important role in insect behaviour. Although it is generally believed that phylogenetically closely related microbes tend to have similar phenotypic characteristics and therefore may elicit similar responses in insects, currently little is known about whether the evolutionary history and phylogenetic relationships among microorganisms have an impact on insect–microbe interactions. In this study, we tested the hypothesis that phylogenetic relationships among 40 Bacillus strains isolated from diverse environmental sources predicted mVOC composition and the olfactory response of the generalist aphid parasitoid Aphidius colemani. Results revealed that phylogenetically closely related Bacillus strains emitted similar blends of mVOCs and elicited a comparable olfactory response of A. colemani in Y‐tube olfactometer bioassays, varying between attraction and repellence. Analysis of the chemical composition of the mVOC blends showed that all Bacillus strains produced a highly similar set of volatiles, but often in different concentrations and ratios. Benzaldehyde was produced in relatively high concentrations by strains that repel A. colemani, while attractive mVOC blends contained relatively higher amounts of acetoin, 2,3‐butanediol, 2,3‐butanedione, eucalyptol and isoamylamine. Overall, these results indicate that bacterial phylogeny had a strong impact on mVOC compositions and as a result on the olfactory responses of insects.

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“…Considering that the pH at the end of the experiment (42 days) was high, all treatments have produced ammonia, since, according to Logan & Vos (2015), one of the major bacteria involved on the urea lysis, the Bacilius pasteurii, cannot grow at neutral pH values, but develop in pH values above those. It was expected that the superphosphate, being an acidic substance, would decrease the pH down until the end of the experiment.…”

Section: Resultsmentioning

confidence: 99%

Additives to Control the Quality of Coffee Husk Poultry Litter

Ferreira¹,

Santos²,

Inoue³

et al. 2018

Reveng

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The poultry litter keeps the birds comfortable and absorbs the humidity generated in the environment, reducing the feet injuries. Then, its quality is essential. The objective for carrying out the present study was to evaluate the quality of the coffee husk poultry litter, treated with chemical additives, based on its humidity, N-ammonia, pH and bacteria total counting. The experiment was carried out in Minas Gerais state, Brazil, in a coffee producer region. It were used three facilities, in which it were placed circular boxes, each of them divided in seven parts, 2 m2 each one, where it were put the different types of poultry litter, being these the seven treatments: sawdust and coffee husks litter, being this last, new and untreated or treated with different additives and reused. Twenty-two chicks were distributed in each treatment (154 birds per facility, 11 birds m-2). Litter samples were collected at 7, 21 and 42 days of birds age. The experimental design was in randomized blocks, subdivided plots. The results were submitted to ANOVA and Tukey’s test. The hydrated lime increased the pH in the initial phase (7 days) and decreased the moisture of the reused litter, compared to the new one. The gypsum reduced the pH of the litter at the end of the second phase. The N-ammonia content of the reused litter, without treatment, was superior compared to the new one, untreated and treated with lime. There was no effect on the standard counting of bacteria and on the surface temperature of the litter. Then, the use of chemical additives in the poultry litter constitutes a good strategy to control its quality, as well as the environmental conditions to produce poultry meat.

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Bacillus

Cited by 97 publications

References 591 publications

Genome annotation and antimicrobial properties of Bacillus toyonensis VU‐DES13, isolated from the Folsomia candida gut

Genome annotation and antimicrobial properties of Bacillus toyonensis VU‐DES13, isolated from the Folsomia candida gut

Bacterial phylogeny predicts volatile organic compound composition and olfactory response of an aphid parasitoid

Additives to Control the Quality of Coffee Husk Poultry Litter

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