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Predatory bacteria as potential biofilm control and eradication agents in the food industry
Biofilms are a major concern within the food industry since they have the potential to reduce productivity in situ (within the field), impact food stability and storage, and cause downstream food poisoning. Wi...
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The “Cins” of Our Fathers: Rejuvenated Interest in Colicins to Combat Drug Resistance
With the growing threat of antibiotic resistance, researchers around the globe are seeking alternatives to stem bacterial pathogenesis. One such alternative is bacteriocins, proteins produced by bacterial spec...
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Open AccessBiotechnological Activities and Applications of Bacterial Pigments Violacein and Prodigiosin
In this review, we discuss violacein and prodigiosin, two chromogenic bacterial secondary metabolites that have diverse biological activities. Although both compounds were “discovered” more than seven decades ...
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Diffusible Signaling Factor, a Quorum-Sensing Molecule, Interferes with and Is Toxic Towards Bdellovibrio bacteriovorus 109J
Bdellovibrio bacteriovorus 109J is a predatory bacterium which lives by predating on other Gram-negative bacteria to obtain the nutrients it needs for replication and survival. Here, we evaluated the effects two ...
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Concentric liquid reactors for chemical synthesis and separation
Recent years have witnessed increased interest in systems that are capable of supporting multistep chemical processes without the need for manual handling of intermediates. These systems have been based either...
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Loss of the lipopolysaccharide (LPS) inner core increases the electrocompetence of Escherichia coli
Mutations that shorten the lipopolysaccharide (LPS) in Escherichia coli were found to significantly increase the number of transformants after electroporation. The loss of the LPS outer core increased the number ...
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Open AccessConsumption of Oleic Acid During Matriphagy in Free-Living Nematodes Alleviates the Toxic Effects of the Bacterial Metabolite Violacein
Maternal behaviors benefit the survival of young, contributing directly to the mother’s reproductive fitness. An extreme form of this is seen in matriphagy, when a mother performs the ultimate sacrifice and of...
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Compounds affecting predation by and viability of predatory bacteria
Bdellovibrio-and-like organisms (BALOs) are a small group of bacteria that actively predate on other Gram-negative bacterial species. Although viewed mostly in a positive light, such as their potential use as liv...
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Environmental and Biotic Factors Impacting the Activities of Bdellovibrio bacteriovorus
‘Everything is everywhere, but the environment selects’
– Lourens Baas Becking
This quote by Dutch botanist Lourens Baas Becking, when extended to microbiology, implies the activities of microorganisms are defin... -
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Sensitivity of predatory bacteria to different surfactants and their application to check bacterial predation
We evaluated the toxicity of surfactants against different predatory bacteria. Tests with Bdellovibrio bacteriovorus HD100 and SDS, an anionic surfactant, showed the predator was very sensitive; 0.02% SDS complet...
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Interactions Among Abiotic Drivers, Disturbance and Gross Ecosystem Carbon Exchange on Soil Respiration from Subtropical Pine Savannas
Globally, soil CO2 efflux rates (Fs) have been linked to changes in soil water content (SWC), rainfall and temperature and/or productivity. However, within an ecosystem, Fs can vary based on site structure and fu...
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Open AccessThe Cytotoxic Necrotizing Factor of Yersinia pseudotuberculosis (CNFy) is Carried on Extracellular Membrane Vesicles to Host Cells
In this study we show Yersinia pseudotuberculosis secretes membrane vesicles (MVs) that contain different proteins and virulence factors depending on the strain. Although MVs from Y. pseudotuberculosis YPIII and ...
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Attack-Phase Bdellovibrio bacteriovorus Responses to Extracellular Nutrients Are Analogous to Those Seen During Late Intraperiplasmic Growth
Bdellovibrio bacteriovorus is a predatory bacterium which lives by invading the periplasm of gram-negative bacteria and consuming them from within. This predator was thought to be depende...
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Open AccessCombined Application of Bacterial Predation and Violacein to Kill Polymicrobial Pathogenic Communities
Violacein is a bisindole antibiotic that is effective against Gram-positive bacteria while the bacterial predator, Bdellovibrio bacteriovorus HD100, predates on Gram-negative strains. In this study, we evaluated ...
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Open AccessSerum albumin and osmolality inhibit Bdellovibrio bacteriovorus predation in human serum
We evaluated the bactericidal activity of Bdellovibrio bacteriovorus, strain HD100, within blood sera against bacterial strains commonly associated with bacteremic infections, including E. coli, Klebsiella pneumo...
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Aboriginal mitogenomes reveal 50,000 years of regionalism in Australia
Aboriginal Australians represent one of the longest continuous cultural complexes known. Archaeological evidence indicates that Australia and New Guinea were initially settled approximately 50 thousand years a...
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Open AccessInvestigating the Responses of Human Epithelial Cells to Predatory Bacteria
One beguiling alternative to antibiotics for treating multi-drug resistant infections are Bdellovibrio-and-like-organisms (BALOs), predatory bacteria known to attack human pathogens. Consequently, in this study, ...
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Open AccessHigh-level production of violacein by the newly isolated Duganella violaceinigra str. NI28 and its impact on Staphylococcus aureus
A violacein-producing bacterial strain was isolated and identified as a relative of Duganella violaceinigra YIM 31327 based upon phylogenetic analyses using the 16S rRNA, gyrB and vioA gene sequences and a fatty ...
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Open AccessEffects of Carbon Dioxide Aerosols on the Viability of Escherichia coli during Biofilm Dispersal
A periodic jet of carbon dioxide (CO2) aerosols is a very quick and effective mechanical technique to remove biofilms from various substrate surfaces. However, the impact of the aerosols on the viability of bacte...
