Columns with different letters indicate significant difference at P < 0.05 (Duncan test). A Canonical Biotin Synthesis Enzyme, 8-Amino-7-Oxononanoate Synthase (BioF), Utilizes Different Acyl Chain Donors in Bacillus subtilis and Escherichia coli. B. subtilis WB600 mut-12# exhibited good genetic stability. Shoot dry weight was increased by 4.0-fold (P < 0.05) under non-saline conditions; compared to corresponding media control, GB03 significantly improved shoot dry weight by 4.9-fold (P < 0.05), 6.4-fold (P < 0.01), and 3.2-fold (P < 0.05) with 50, 100, and 150 mM NaCl treatment, respectively (Figure (Figure2B).2B). Farag M. A., Ryu C. M., Sumner L. W., Par P. W. (2006). These findings provide conclusive evidence for the role of Ag+ ions in Ag-NP microbial toxicity, and suggest that the impact of inappropriately disposed Ag NPs to soil and water ecosystems may warrant further investigation. In addition, self-sensing in the ComQXP system affected persistence to antibiotic treatment. Rhizobial strain involvement in plant growth, nodule protein composition and antioxidant enzyme activities of chickpea-rhizobia symbioses: modulation by salt stress.
In balanced growth, bacterial protein abundances depend on the dilution rate, transcript abundances and transcript-specific translation efficiencies. Results of this study also revealed the potential industrial application of this enzyme in reducing acrylamide formation during the potato frying process. PMID:26253537. Na+ and K+ were extracted from dried plant tissues in 100 mM acetic acid at 90C for 2 h. Ion analysis was performed using an atomic absorption spectrophotometer (2655-00, Cole-Parmer Instrument Co., Vernon Hills, IL, USA). Microbiol. 
This study was aimed to evaluate the algicidal activity of Loktanella sp. Both forms appeared to be glycoproteins, both contained compounds, released on acid hydrolysis, which cochromatographed with phosphoserine and galactosamine, and the two gave identical immunoprecipitin lines in Ouchterlony double-diffusion tests. Since little information related to the capability of R.sphaeroides and A.tumefaciens to inhibit P.expansum is currently available, the results of this study provide some new perspectives to the biocontrol field. In stark contrast to the initially unfolded biofilm proteins of other bacteria, TasA is a soluble, stably folded monomer, whose structure we have determined by X-ray crystallography. Effects of Mn2+ Levels on the Resistance Properties of Bacillus cereus Spores, In contrast, Bacillus subtilis spores with over a 200-fold range of protoplast Mn levels exhibited no significant differences in resistance to Bacillus subtilis . Direct Comparison of Physical Properties of Bacillus subtilis NCIB 3610 and B-1 Biofilms, Kesel, Sara; Grumbein, Stefan; Gmperlein, Ina; Tallawi, Marwa; Marel, Anna-Kristina, Many bacteria form surface-attached communities known as biofilms. PMID:23577149. Acid upregulated malate metabolism (maeN), metal export (czcDO and cadA), oxidative stress (catalase katA; OYE family namA), and the SigX extracytoplasmic stress regulon. The twin-arginine translocation (Tat) pathway exports folded proteins across the cytoplasmic membranes of bacteria and archaea. Here, we explored the existence and impact of self-sensing in the Bacillus subtilis ComQXP and Rap-Phr quorum-sensing systems. Our data on the relative involvement of these LPs in the biocontrol activity and modulation of their production are discussed in the context of natural conditions in the rhizosphere. While a surfactant from a fungus can substitute for SapB in a mutant that lacks aerial hyphae, not all surfactants have this effect. Various strains of Bacillus spp were tested for pathogen inhibition capability in a dual culture manner. Purified enzyme had maximal phytase activity at pH 7 and 55C. michiganense ATCC 7429 invitro. The dtd gene from Bacillus amyloliquefaciens encodes a putative D-tyrosyl-tRNATyr deacylase and is a selectable marker for Bacillus subtilis. Mhadhbi H., Jebara M., Limam F., Aouani M. E. (2004). The protein was crystallized using the hanging-drop vapour-diffusion method from a solution containing 4 M sodium formate in 100 mM TrisHCl buffer pH 8.2.more Diffraction data were collected under cryogenic conditions to a spacing of 2.5 . The solution structure of SpoIIAA has recently been published. Isolation, Characterization, Molecular Gene Cloning, and Sequencing of a Novel Phytase from Bacillus subtilis, Kerovuo, Janne; Lauraeus, Marko; Nurminen, Pivi; Kalkkinen, Nisse; Apajalahti, Juha, The Bacillus subtilis strain VTT E-68013 was chosen for purification and characterization of its excreted phytase. (2011). Binding of AbrB and Abh to the promoter regions was examined using DNase I footprinting, and the results revealed significant differences. However, detailed spore coat architecture and assembly, comprehensive understanding of the proteomic composition of coat layers, and specific roles of coat proteins in coat assembly and their precise localization within the coat remain in question. The phytase gene (phyC) was cloned from the B. subtilis VTT E-68013 genomic library. In this study, to secrete methyl parathion hydrolase (MPH) into the growth medium, the twin-arginine signal peptide of B. subtilis YwbN was used to target MPH to the Tat pathway of B. subtilis. This paper defines an enzyme of the Bacillus subtilis pathway and shows that it differs from that of Escherichia coli in the ability to utilize specific precursors. In this work, GB03 significantly decreased leaf MDA content of white clover under saline conditions (50, 100, and 150 mM NaCl). We show that B-1 biofilms are protected from ethanol-induced changes in the biofilm's stiffness and that this protective effect can be transferred to NCIB 3610 biofilms by the sole addition of -polyglutamate to growing NCIB 3610 biofilms. Effects of GB03 bacterization on leaf development and growth of white clover under various concentrations of NaCl. Adsorption edge and XAS experiments were performed at high bacteria-to-metal ratio, analogous to Cu uptake in natural geologic and aqueous environments.
Takahashi, Shusuke; Furuya, Toshiki; Ishii, Yoshitaka; Kino, Kuniki; Kirimura, Kohtaro. Effect of different solvents extracts and mode of action of Loktanella spp. Different concentrations of 'C' and 'N' sources were used in the production medium to enhance the production of surfactin. Zhang et al. Moreover, challenge with specific strains overproducing surfactin and mycosubtilin led to a slightly enhanced stimulation of the defence response compared with the LP-non-producing strain of B.subtilis. One group (46 ewes) served as control, while the other one (48 ewes) served as a probiotic-treated group. In order to develop the herbicide-resistant plants, the transgenic rice plants were generated via expression of B. subtilis Protox gene under ubiquitin promoter targeted to the cytoplasm or to the plastid using Agrobacterium-mediated gene transformation. Maximum effects were obtained at 20 proteolytic units and 30min exposure. Although surfactin and mycosubtilin stimulated grapevine innate immune responses, they differentially activated early signalling pathways and defence gene expression. Salt-induced oxidative stress in chloroplasts of pea plants. In cold climate regions, microorganisms in upper layers of soil are subject to low temperatures and repeated freeze-thaw (FT) conditions during the winter. Ma, Yingfang; Yang, Haiquan; Chen, Xianzhong; Sun, Bo; Du, Guocheng; Zhou, Zhemin; Song, Jiangning; Fan, You; Shen, Wei. The authors declare that the research was conducted in the absence of any commercial or financial relationships that could be construed as a potential conflict of interest. subtilis (VCRC B471) was found to exhibit mosquitocidal activity. Chatterjee, Joyee; Giri, Sudipta; Maity, Sujan; Sinha, Ankan; Ranjan, Ashish; Rajshekhar; Gupta, Suvroma. The estimated Matthews coefficient was 3.23 {sup 3} Da{sup 1}, corresponding to 62% solvent content. We modeled the potentiometric data using a four and five-site non-electrostatic surface complexation model (NE-SCM). (2006). We propose that the assembly of the previously unreported fibrous layer, which we link to the darkly stained outer coat seen by electron microscopy, and the nanodot layer are cotH- and cotE- dependent and cotE-specific respectively. In the progeny, we identified haploid recombinant clones that contain a chromosome carrying large regions of inactivated DNA. Columns with different letters indicate significant difference at P < 0.05 (Duncan test). These authors have contributed equally to this work. The system allows measuring the elimination of TR units due to growth rate recovery. This result suggests that the differences in cellular milieu between B.subtilis and B.licheniformis, rather than the intrinsic differences in PerR BS and PerR BL per se, affect the H 2 O 2 sensing ability of PerR inside the cell and the H 2 O 2 resistance of cell. Draft genome of bagasse-degrading bacteria Bacillus aryabhattai GZ03 from deep sea water. GC-MS SPME profiling of rhizobacterial volatiles reveals prospective inducers of growth promotion and induced systemic resistance in plants, Intracellular and extracellular PGPR: commonalities and distinctions in the plant-bacterium signaling processes. Nattokinase is a potent fibrinolytic enzyme with the potential for fighting cardiovascular diseases. PMID:29038467. Mariner, Katherine R; Ooi, Nicola; Roebuck, Deborah; O'Neill, Alex J; Chopra, Ian. Condensin promotes the juxtaposition of DNA flanking its loading site in Bacillus subtilis. Gageostatins 1-3 exhibited good antifungal activities with MICs values of 4-32 g/mL when tested against pathogenic fungi (R. solani, B. cinerea and C. acutatum) and moderate antibacterial activity against bacteria (B. subtilis, S. aeureus, S. typhi and P. aeruginosa) with MICs values of 8-64 g/mL. Thus, the ifm gene plays a determinantal role in the ability of B. subtilis to contact with solid surfaces. The synthesis of lipopeptides was studied by UV-MALDI TOF. The aim of this work was to use molecular genetic techniques to develop a new strategy to prevent cell lysis and enhance biomass as well as the production of recombinant proteins.
Different small, acid-soluble proteins of the alpha/beta type have interchangeable roles in the heat and UV radiation resistance of Bacillus subtilis spores. Instead, only two forms of the enzyme were isolated. The new version, which showed an approximate 40% increase in fluorescence intensity, was expressed from developmental phase-specific, native promoters of B. subtilis that are specifically active during vegetative growth on glucose (PptsG) or during sporulation (PspoIIA, PspoIIID, and PsspE). To gain a comprehensive insight into the metabolism of B. subtilis, global metabolite analyses were performed during growth with glucose alone or glucose with either malate, fumarate or citrate as carbon/energy sources. Screening a genome-wide transposon mutant library, we find that an active malic enzyme replenishing the pyruvate pool is required for this repression. Transgenic rice plants expressing a Bacillus subtilis protoporphyrinogen oxidase gene are resistant to diphenyl ether herbicide oxyfluorfen. To combat antibiotic resistance of Enterococcus faecalis, a better understanding of the molecular mechanisms, particularly of antibiotic detection, signal transduction and gene regulation is needed. PMID:24093784. This is partly because the biosynthetic pathways in bacteria are incompletely understood. A precursor spore coat protein with a molecular weight of 25,000 is made initially at t1 of sporulation and is converted to the mature spore coat protein with a molecular weight of 13,500 at t2 - t3. Non-self-recognition of microorganisms partly relies on the perception of microbe-associated molecular patterns (MAMPs) and leads to the activation of an innate immune response. Plomp, Marco; Carroll, Alicia Monroe; Setlow, Peter; Malkin, Alexander J, Bacillus spores are encased in a multilayer, proteinaceous self-assembled coat structure that assists in protecting the bacterial genome from stresses and consists of at least 70 proteins. The ameliorative effect of silicon on soybean seedlings grown in potassium-deficient medium. (2011). Studies of both recombinants of the latter kind and heterodiploid cells indicated that chromosomal inactivation was not determined by alteration of the inactivated nucleotide sequence, but was probably due to a modification in the structure of the bacterial chromatin. Arguably the most comprehensively studied examples in bacteria are domains formed by cardiolipin, which have been functionally linked to protein targeting, the cell division process and the mode of action of membrane-targeting antimicrobials. Fang, Chong; Stiegeler, Emanuel; Cook, Gregory M; Mascher, Thorsten; Gebhard, Susanne.
Using lacZ fusions, we examined the effects of abh upon the expression of 10 promoters known to be regulated by AbrB, including five that transcribe well-characterized antimicrobial functions (SdpC, SkfA, TasA, sublancin, and subtilosin). Beneficial soil bacteria promoted plant growth of many plant species (Bashan et al., 2000; Gray and Smith, 2005; Xie et al., 2009; Par et al., 2011). Presence of LacA protein is verified by western blotting. Antimicrobial susceptibility test was done by Kirby-Bauer disc diffusion method. Columns with different letters indicate significant difference at P < 0.05 (Duncan test). The strategy involves replacing the natural regulatory region of the B. subtilis chromosomal biotin biosynthetic operon (bioWAFDBIorf2) with an engineered one consisting of the B. subtilis groE promoter and gluconate operator. Although mycosubtilin and plipastatin displayed direct antifungal activity, only surfactin and mycosubtilin treatments resulted in a local long-lasting enhanced tolerance to the necrotrophic fungus Botrytis cinerea in grapevine leaves. With this developed B. subtilis strain, the design of an optimum but cost-effective medium for high-level production of recombinant nattokinase was attempted by using response surface methodology. Luna C., Seffino L. G., Arias C., Taleisnik E. (2000). (Wang et al., 2005; Ramani et al., 2006). This study initiated a biocontrol approach to limit the internalization using endophytic Bacillus subtilis strains, which were isolated from the inner tissue of mung bean seeds or lettuce stems. Salt-tolerant rhizobacteria-mediated induced tolerance in wheat (. Chromosomal inactivation of Bacillus subtilis exfusants: a prokaryotic model of epigenetic regulation. Here, we show that Ag-NP concentrations as low as 10 ppm exert significant toxicity against Bacillus subtilis, a beneficial bacterium ubiquitous in the soil. FT treatment decreased bacterial swimming motility and the transcription of flagellin encoding genes. Zhang, Liyuan; Ma, Qiugang; Ma, Shanshan; Zhang, Jianyun; Jia, Ru; Ji, Cheng; Zhao, Lihong. The 21 bp RTP:DNA complex displays marked structural asymmetry in both the homodimeric protein and the DNA.
Bethesda, MD 20894, Web Policies Harnessing salt for woody biomass production. Therefore, we speculated that there may exit another pathway relating to the meso-2,3-butanediol synthesis in the B. subtilis. The optimum pH and temperature of the recombinant enzyme were 7.5 and 40 C, respectively. Bacillus subtilis as a platform for molecular characterisation of regulatory mechanisms of Enterococcus faecalis resistance against cell wall antibiotics. Here, we revealed that the soil bacterium Bacillus amyloliquefaciens A50 is tolerant to the non-canonical amino acid D-tyrosine (D-Tyr), in contrast to the closely related Bacillus strain B. subtilis 168, which is a widely used "domesticated" laboratory strain. PMID:10322033. The supplementation of B. subtilis ANSB060 into aflatoxin-contaminated diets increased the ADG of ducks (p > 0.05), significantly improved antioxidant enzyme activities, and reduced aflatoxin accumulation in duck liver. The major acid-soluble spore proteins (ASSPs) of Bacillus subtilis were detected by immunoprecipitation of radioactively labeled in vitro- and in vivo-synthesized proteins. Combining ability analysis of resistance in white clover to southern root-knot nematode.
Wang, Yi; Chen, Zhenmin; Zhao, Ruili; Jin, Tingting; Zhang, Xiaoming; Chen, Xiangdong. Here, we focus on a highly efficient whole-cell biocatalyst for the production of L-ornithine. Bacillus subtilis alters the proportion of major membrane phospholipids in response to surfactin exposure. It was revealed that the glucose metabolic flux through pentose phosphate (PP) pathway was lower as being confirmed by smaller pool sizes of metabolites in PP pathway and lower expression amount of ykgB at transcriptional level. The stay-green revolution: recent progress in deciphering the mechanisms of chlorophyll degradation in higher plants, Growth promotion of the seawater-irrigated oilseed halophyte. We measured the adsorption of Cu(II) to Bacillus subtilis as a function of pH and surface loading. Due to the extreme resistance of these bacterial biofilms to antibiotics and mechanical stresses, biofilms are of growing interest not only in microbiology but also in medicine and industry. Cao, Haojie; van Heel, Auke J; Ahmed, Hifza; Mols, Maarten; Kuipers, Oscar P. Bacillus subtilis is widely used as a cell factory for numerous heterologous proteins of commercial value and medical interest. The selected antagonists could be applied before harvesting to control apple infection by PAT-producing fungi and also during processing to act as PAT detoxifiers. However, endogenous Na+ accumulation was reduced significantly. Orthologs of the B. subtilis PB-transporter YclNOPQ in PB-producing Bacilli are likely contributors to the pathogenicity of these species and provide a potential target for antibacterial strategies.less. This prompted us to investigate whether the surfactin non-producing strain B. subtilis 168 changes its membrane composition in response to a sublethal surfactin concentration. Moreover, ResE, a membrane-anchored protein that is capable of oxygen regulated phosphorylase activity, and ResD, a regulatory protein that can be phosphorylated and dephosphorylated by ResE, were considered as DO tension sensor and transcriptional regulator respectively. However, an additional CcpA-independent mechanism represses pftAB in the presence of malate. Lamb mortality during the 1.5 months suckling period, and milk yield during the 2 months of milk collection for commercial purposes have been recorded. Compared to corresponding media control, Shoot K+/Na+ ratios increased by 78.6% (P < 0.01), 32.0% (P < 0.05), and 39.7% (P < 0.05) as well as root K+/Na+ ratios by 34.6% (P < 0.05), 82.2% (P < 0.01), and 66.2% (P < 0.01) under soil salinity conditions of 50, 100, and 150 mM NaCl, respectively (Table (Table11). Costs and benefits of priming for defense in. Knowledge of the highly regulated processes governing the production of flagella in Bacillus subtilis is the result of several observations obtained from growing this microorganism in liquid cultures. Growth arrest and chromosomal DNA degradation were observed, and flow cytometric quantification of propidium iodide (PI) staining also revealed that Ag-NP concentrations of 25 ppm and above increased membrane permeability. Furthermore, it stops to produce flagella when transferred from liquid to solid medium. Early during germination, YpeB is proteolytically processed to a stable fragment. In the case of white clover, GB03 significantly reduced leaf osmotic potential under severe salt stress conditions (150 mM NaCl). The molecular actions that govern microbial competition, leading to niche establishment and microbial monopolization, remain undetermined. This is an open-access article distributed under the terms of the Creative Commons Attribution License (CC BY).
Effects of GB03 bacterization on leaf malondialdehyde (MDA) content of white clover under various concentrations of NaCl. Copyright 2018 the Author(s). CS exhibited the highest inhibitory effect (around 50%) when compared to those of CFS and LF, regardless of the fungal strain studied. The VanSB-VanRB system displayed a gradual dose-response behaviour to vancomycin, but only when produced at low levels in the cell. By using the deferred agar method, 12 strains of B. subtilis out of 94 putative Bacillus isolates displayed inhibitory activity against at least one of the pathogenic indicators, S. enterica Typhimurium ATCC 14028 and E. coli O157:H7 505B. To evaluate the antimicrobial activity against four diabetic foot ulcer bacterial pathogens. The five-site model resulted in a substantially better model fit for the heats of protonation but did not significantly improve the potentiometric titration model fit. Two distinct groups within the Bacillus subtilis group display significantly different spore heat resistance properties. Intracellular serine protease 1 of Bacillus subtilis is formed in vivo as an unprocessed, active protease in stationary cells. The deduced amino acid sequence (383 residues) showed no homology to the sequences of other phytases nor to those of any known phosphatases. subtilis PGPMori7 and Bacillus amyloliquefaciens PGPBacCA1 was evaluated against Macrophomina phaseolina (Tassi) Goid. Here we report the draft genome sequence of Bacillus aryabhattai GZ03. For example, in response to nutritional stresses, the Gram-positive bacterium Bacillus subtilis can differentiate into an endospore; the initiation of sporulation is controlled by the master regulator Spo0A, which is activated by phosphorylation. These results are consistent with the detection of the anti-listerial subtilosin A gene of the sbo/alb cluster in the KKU213 strain, which is 100% identical to that of B. subtilis subsp. Decolourization of 4-Chloro-2-Nitrophenol by a Soil Bacterium. Kim, Jung-Hoon; Won, Young-Bin; Ji, Chang-Jun; Yang, Yoon-Mo; Ryu, Su-Hyun; Ju, Shin-Yeong; Kwon, Yumi; Lee, Yeh-Eun; Lee, Jin-Won. Complex regulatory programs control cell adaptation to environmental changes by setting condition-specific proteomes. Rudrappa T., Biedrzychi M. L., Kunjeti S. G., Donofrio N. M., Czymmek K. J., Par P. W., et al. Isolation and molecular characterization of thermostable phytase from Bacillus subtilis (BSPhyARRMK33). Bhuvaneswari, S; Manonmani, A M; Geetha, I. By comparing the quorum-sensing response of autoinducer-secreting and non-secreting cells in co-culture, we found that secreting cells consistently showed a stronger response than non-secreting cells. Cell suspension (CS), cell-free supernatant (CFS) and the lipopeptide fraction (LF) of PGPMori7 and PGPBacCA1 were screened against three different M. phaseolina strains. Ratio of 1:100 (v:v) (extract to dinoflagellate culture) of each extract was used for preliminary algicidal activity screening against toxic dinoflagellate Coolia malaynesis. Using chromosome conformation capture and cytological assays, we show that condensin recruitment to origin-proximal parS sites is required for the juxtaposition of the two chromosome arms. Five genes or genetic elements representing three different functional categories were studied as follows: lytC encoding PG hydrolases, the prophage genes xpf and yqxG-yqxH-cwlA (yGlA), and skfA and sdpC that encode cannibalism factors. We model the surface electrostatics using the 1p K basic Stern approximation. In co-culture assays, the bacterial colony-fungal mycelium interface at the inhibition zone was evaluated by both scanning electron microscopy (SEM) and UV-MALDI TOF, the former to determine the structural changes on M. phaseolina cells and the latter to identify the main bioactive molecules involved in the inhibitory effect. The transcription level of virulence genes of A. hydrophila SC2005 and its hemolysin activity as well as its cytotoxicity were analyzed when B. subtilis CH9 and A. hydrophila SC2005 were co-cultured. Numerous factors mediate the lysis of B. subtilis, such as cannibalism factors, prophages, and peptidoglycan (PG) hydrolases. In addition, the typical energy-starvation induced activation of the general stress sigma factor (B) was only observed upon entry into the stationary phase with glucose or glucose and malate as carbon sources. Copyright 2014 Elsevier Ltd. All rights reserved. The inner surface of the cell wall has a regular macrostructure with 50 nm-wide peptidoglycan cables [average 53 12 nm (n = 91)] running basically across the short axis of the cell. Rogers M. E., Noble C. L., Halloran G. M., Nicolas M. E. (1997). Medium optimization for the production of recombinant nattokinase by Bacillus subtilis using response surface methodology. Under the set of conditions used in these experiments, protease synthesis began near t0, alkaline phosphatase synthesis began at about t2, and refractile spores were first observed between t7 and t8. However, the biosensors confirmed the modes of action of several RNA polymerase inhibitors and DNA intercalators and provided new insights into the possible modes of action of ciprofloxacin, anhydrotetracycline, corralopyronin, 8-hydroxyquinoline, and juglone. These data indicate that the spore coat protein gene is expressed very early in sporulation prior to the modifications of RNA polymerase which have been noted. Asadishad, Bahareh; Olsson, Adam L J; Dusane, Devendra H; Ghoshal, Subhasis; Tufenkji, Nathalie.