Bacillus wiedmannii sp. nov., a psychrotolerant and cytotoxic Bacillus cereus group species isolated from dairy foods and dairy environments

Miller, Robert W.; Beno, Sarah M.; Kent, David J.; Carroll, Laura M.; Martin, N.H.; Boor, Kathryn J.; Kovač, Jasna

doi:10.1099/ijsem.0.001421

Cited by 143 publications

(162 citation statements)

References 36 publications

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“…The primary focus of this study is the accurate reconstruction of phylogenetic relationships among taxa, and thus I make no specific recommendations for species re-designation based on these results. However, I do note a trend towards refined species designations that correlate with group affiliation; for example, several B. cereus strains in Group II have recently been re-designated B. wiedmanii [45]; similarly, Böhm et al [8] suggested that all Group V taxa should be designated B. toyonensis [30]. In general, I recommend that taxonomic revisions are informed by well-supported phylogenetic hypotheses that have been generated without bias towards any particular species concept (e.g., dDDH boundaries [42]).…”

Section: Discussionmentioning

confidence: 93%

“…Distance-based phylogeny of the genus Bacillus All "reference" and "representative" Bacillus genome assemblies were retrieved from the NCBI RefSeq [49] database in October 2016, comprising 86 assemblies from 74 well-described Bacillus species and 44 assemblies from as-yet uncharacterized species. In addition, 16 "latest" assemblies were added for five Bacillus species that are thought to be part of B. cereus s. l. (B. bingmayongensis [41], B. gaemokensis [32], B. pseudomycoides [47], B. toyonensis [30], and B. wiedmannii [45]). In total, 146 Bacillus genomes were included in the distance-based phylogenetic analysis.…”

Section: Methodsmentioning

confidence: 99%

“…To perform analyses involving all publicly available B. cereus s. l. genome data, all "latest assemblies" were downloaded for the eight species mentioned above, and based on analysis of the Bacillus distance-based phylogeny, assemblies were added for B. bingmayongensis [42], B. gaemokensis [32], B. manliponensis [31], B. wiedmannii [46], and one uncharacterized species (Bacillus sp. UNC437CL72CviS29), which altogether comprised 498 genomes ("bcsl 498"; Table 1).…”

Section: Bcsl 498mentioning

confidence: 99%

“…Historically recognized and most well-sampled of the species are B. anthracis (the causative agent of anthrax), B. cereus sensu stricto (capable of causing food poisoning and other ailments), and B. thuringiensis (used to control insect pests). Other species are distinguished by rhizoidal growth patterns (B. mycoides and B. pseudomycoides [48]), thermotolerance and cytotoxicity (B. cytotoxicus [25]), psychrotolerance and ability to cause food spoilage (B. weihenstephanensis [38] and B. wiedmannii [46]), and utility as a probiotic in animal nutrition (B. toyonensis [30]). In addition, several new species have also recently been described (B. bingmayongensis [42], B. gaemokensis [32], and B. manliponensis [31]).…”

Section: Introductionmentioning

confidence: 99%

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Pan-genome and phylogeny ofBacillus cereus sensu lato

Bazinet¹

2017

Preprint

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Background: Bacillus cereus sensu lato (s. l.) is an ecologically diverse bacterial group of medical and agricultural significance. In this study, I use publicly available genomes to characterize the B. cereus s. l. pan-genome and perform the largest phylogenetic and population genetic analyses of this group to date in terms of the number of genes and taxa included. With these fundamental data in hand, I identify genes associated with particular phenotypic traits (i.e., "pan-GWAS" analysis), and quantify the degree to which taxa sharing common attributes are phylogenetically clustered.

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Section: Discussionmentioning

confidence: 93%

Section: Methodsmentioning

confidence: 99%

Section: Bcsl 498mentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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Pan-genome and phylogeny ofBacillus cereus sensu lato

Bazinet¹

2017

Preprint

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“…Bacillus toyonensis and B. wiedmannii were the most distributed among the Bacillaceae family in the four bentonite samples. Both B. toyonensis and B. wiedmannii belong to the B. cereus group, which are facultatively anaerobic and sporeforming bacteria known to be distributed in various environments [16]. The members of the B. cereus group are also known as food-spoilage organisms, but no toxin production and cytotoxicity were seen in these two strains [17].…”

mentioning

confidence: 99%

Cultivable Microbial Diversity in Domestic Bentonites and Their Hydrolytic Enzyme Production

Seo¹,

Cho²,

Hwang³

et al. 2019

Microbiology and Biotechnology Letters

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Clay minerals are classified as kaolinite and montmorillonite minerals, as a class of layered silicates formed from chemical weathering of other silicate minerals on the surface of the earth [1]. Clay minerals with varying amounts of iron, magnesium, alkali metals, alkaline earths, and other cations are present in the interlayer space or in the lattice structure. They have well-known adsorbent properties due to their layered form, with a high internal surface area, high cation-exchange capacity, and good swelling properties in the presence of water [2]. In the Korea Food and Drug Administration, six kinds of clay minerals (diatomaceous earth, kaolin, bentonite, acid clay, talc, and perlite) are listed in the Food Additive Code, and they are used in filtration aids in the beverage, brewing, and fermentation industries [3].Bentonite is a kind of montmorillonite, and it contains various elements such as potassium (K + ), sodium (Na + ), calcium (Ca 2+ ), and aluminum (Al + ) [4]. Bentonites have been investigated for the adsorption of heavy metals and molecular species in a variety of environments and industries and have been identified as low-cost adsorbents [5]. In addition to studies on the physicochemicalWe have isolated and identified 72 bacterial strains from four bentonite samples collected at the mining areas located in Gyeongsangbuk-do, Republic of Korea, and measured their hydrolytic enzyme (α-amylase, protease, and cellulase) activities to identify the isolates with industrial-use potential. Most of the isolates belonged to the Bacillaceae, with minor portions being from the Paenibacillaceae, Micrococcaceae, and Bacillales Family XII at the family level. Of the strains isolated, 33 had extracellular α-amylase activity, 30 strains produced cellulase, and 35 strains produced protease. Strain MBLB1268, having the highest αamylase activity, was identified as Bacillus siamensis (0.38 ± 0.06 U/ml). Bacillus tequilensis MBLB1223, isolated from Byi33-b, showed the highest cellulase activity (0.26 ± 0.04 U/ml), whereas Bacillus wiedmannii MBLB1197, isolated from Zdb130-b, exhibited the highest protease activity (54.99 ± 0.78 U/ml). These findings show that diverse bacteria of the Bacillaceae family adhere to and exist in bentonite and are potential sources of industrially useful hydrolytic enzymes.These authors contributed equally to this work.

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Efficient degradation of rice straw through a novel psychrotolerant Bacillus cereus at low temperature

Wang

Cai

2022

J Sci Food Agric

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BACKGROUND: Rice straw (RS) is one of the largest sources of lignocellulosic, which is an abundant raw material for biofuels and chemicals. However, the natural degradation of RS under a low temperature environment is the biggest obstacle to returning straw to the field. RESULTS:In the present study, one bacillus strain W118 was isolated. Strain W118 was identified as Bacillus cereus through morphological and physiological characterization and 16S rDNA sequencing. The optimum growth temperature and pH of strain W118 were 20 °C and 6.5, respectively. Simultaneously, it was found that the strain W118 grew well at low temperature, even at a temperature of 4 °C (OD 600 = 1.40 ± 0.01). The decrease of various compositions of RS after the fermentation process at a temperature of 20 °C and 4 °C for 14 days was 27.00 ± 0.02% and 23.70 ± 0.04%, respectively. The composition of RS decreased to 50.71 ± 0.02% after being fermented at 4 °C for 25 days. The results of scanning electron microscopy, Fourier transform infrared spectroscopy and X-ray diffraction of RS showed that the compositions of RS were significant decreased.CONCLUSION: This test suggests that the strain W118 is efficient for degrading RS at low temperature, which has great application potential for straw degradation in a low temperature area.

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Bacillus wiedmannii sp. nov., a psychrotolerant and cytotoxic Bacillus cereus group species isolated from dairy foods and dairy environments

Cited by 143 publications

References 36 publications

Pan-genome and phylogeny ofBacillus cereus sensu lato

Pan-genome and phylogeny ofBacillus cereus sensu lato

Cultivable Microbial Diversity in Domestic Bentonites and Their Hydrolytic Enzyme Production

Efficient degradation of rice straw through a novel psychrotolerant Bacillus cereus at low temperature

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