Updated: 2013-05-22 08:16:45
ConclusionsThree PES‐Solid formulations inactivated Bacillus spores that were dried on seven different materials.
Significance and Impact of the StudyA test method was developed to show that PES‐Solid formulations effectively inactivate Bacillus spores on different materials.This article is protected by copyright. All rights reserved. (Source: Journal of Applied Microbiology)
Updated: 2013-05-22 08:16:28
This article is protected by copyright. All rights reserved. (Source: Letters in Applied Microbiology)
Updated: 2013-05-22 07:02:07
Canadian Journal of Microbiology, Volume 0, Issue 0, Page 1-4, e-First articles. (Source: Canadian Journal of Microbiology)
Updated: 2013-05-22 04:00:00
Abstract
Epiphytic microbes are common inhabitants of freshwater submerged macrophytes, which play an important role in aquatic ecosystems. An important precondition for studying the epiphytic microbes is having an effective method of separating the attached microbes from the host macrophytes. We developed an ultrasound‐based method for separating epiphytic microbes from freshwater submerged macrophytes, optimized the conditions of ultrasonic separation with an orthogonal experimental design, and compared the optimized ultrasonic method with manual separation. This method can be particularly useful for freshwater submerged macrophytes having a complex morphology. (Source: Journal of Basic Microbiology)
Updated: 2013-05-22 04:00:00
Abstract
Salicylic acid (SA) is a key plant defense hormone which plays an important role in local and systemic defense responses against biotrophic pathogens like the smut fungus Ustilago maydis. Here we identified Shy1, a cytoplasmic U. maydis salicylate hydroxylase which has orthologs in the closely related smuts U. hordei and Sporisorium reilianum. shy1 is transcriptionally induced during the biotrophic stages of development but not required for virulence during seedling infection. Shy1 activity is needed for growth on plates with SA as a sole carbon source. The trigger for shy1 transcriptional induction is SA, suggesting the possibility of a SA sensing mechanism in this fungus. (Source: Molecular Microbiology)
Updated: 2013-05-22 04:00:00
Skip to Main Content Home Help PUBLICATIONS BROWSE BY SUBJECT RESOURCES ABOUT US LOGIN Enter e-mail address Enter password REMEMBER ME NOT REGISTERED FORGOTTEN PASSWORD INSTITUTIONAL LOGIN Home Microbiology Virology Molecular Microbiology Molecular Microbiology Accepted Articles Abstract JOURNAL TOOLS Get New Content Alerts Get RSS feed Save to My Profile Get Sample Copy Recommend to Your Librarian JOURNAL MENU Journal Home FIND ISSUES Current Issue All Issues FIND ARTICLES Early View Accepted Articles GET ACCESS Subscribe Renew FOR CONTRIBUTORS OnlineOpen Author Guidelines Submit an Article ABOUT THIS JOURNAL News Overview Editorial Board Permissions Advertise Contact SPECIAL FEATURES 3D Interactive Images Faculty of 1000 Prizes Awarded by Molecular Microbiology Virtual Special Issues
Updated: 2013-05-22 04:00:00
Summary
Assembly of the cytoskeletal protein FtsZ into a ring‐like structure is required for bacterial cell division. Structurally, FtsZ consists of four domains: the globular N‐terminal core, a flexible linker, 8‐9 conserved residues implicated in interactions with modulatory proteins, and a highly variable set of 4‐10 residues at its very C terminus. Largely ignored and distinguished by lack of primary sequence conservation, the linker is presumed to be intrinsically disordered. Here we employ genetics, biochemistry and cytology to dissect the role of the linker in FtsZ function. Data from chimeric FtsZs substituting the native linker with sequences from unrelated FtsZs as well as a helical sequence from human beta‐catenin indicate that while variations in the primary sequence ...
Updated: 2013-05-21 04:00:00
ConclusionsHeat curing at 70°C best enhanced antifungal activity of lime oil against A. niger both in medium and on sedge.
Significance and Impact of the StudyHeat curing of lime oil has potential to be used to enhance the antifungal safety of sedge products. (Source: Journal of Applied Microbiology)
Updated: 2013-05-21 04:00:00
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Updated: 2013-05-21 04:00:00
Summary
In Candida albicans, a fungal pathogen, the small G‐protein Ras1 regulates many important behaviors including white‐opaque switching, biofilm formation, and the induction and maintenance of hyphal growth. Like other Ras proteins, Ras1 is activated upon guanine triphosphate binding, and its activity is further modulated by post‐translational lipid modifications. Here, we report that the levels of membrane‐associated, full‐length Ras1 were higher in hyphae than in yeast, and that yeast contained a shorter, soluble Ras1 species that resulted from cleavage. Deletion of the putative cleavage site led to more rapid induction of hyphal growth and delayed hypha‐to‐yeast transitions. The cleaved Ras1 species was less able to activate its effector, adenylate cyclase (Cyr1), unl...
Updated: 2013-05-21 04:00:00
(American Society for Microbiology) Bacteria resistant to the antibiotic colistin are also commonly resistant to antimicrobial substances made by the human body, according to a study in mBio®, the online open-access journal of the American Society for Microbiology. Cross-resistance to colistin and host antimicrobials LL-37 and lysozyme, which help defend the body against bacterial attack, could mean that patients with life-threatening multi-drug resistant infections are also saddled with a crippled immune response. (Source: EurekAlert! - Medicine and Health)
Updated: 2013-05-20 04:00:00
We reviewed diversity and functions of mosquito-associated bacteria. New opportunities for exploiting bacterial function for vector control are highlighted. Image: The endosymbiotic bacterium Wolbachia in the cytoplasm of a cell of Aedes albopictus. (Source: Parasites and Vectors)
Updated: 2013-05-20 04:00:00
, , Log on BioMed Central Journals Gateways 3.55 Search this journal BioMed Central for Go Advanced search Home Articles Authors Reviewers About this journal My Microbial Cell Factories Microbial Cell Factories Volume 12 Viewing options Abstract Provisional PDF 1.6MB Associated material PubMed record About this article Readers' comments Related literature Cited by Google blog search Other articles by authors on Google Scholar Dammeyer T Timmis KN Tinnefeld P on PubMed Dammeyer T Timmis KN Tinnefeld P Related articles pages on Google on Google Scholar on PubMed Tools Download references Email to a friend Order reprints Post a comment Share this article Tweet More options . Citeulike LinkedIn Del.icio.us Email Facebook Google+ Mendeley Twitter Research Broad host range vectors for expression
Updated: 2013-05-20 04:00:00
Conclusions:
The identification of furanomycin as a secondary metabolite of SBW25 is the first report of the production of furanomycin by a pseudomonad. This compound was known previously only as a natural product produced by a strain of Streptomyces. This report adds furanomycin to the small list of non-proteinogenic amino acids that have been identified as secondary products of pseudomonads. This study also extends the list of bacteria that are inhibited by furanomycin to include several plant pathogenic bacteria. (Source: BMC Microbiology - Latest articles)
Updated: 2013-05-20 04:00:00
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Updated: 2013-05-20 04:00:00
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Updated: 2013-05-20 04:00:00
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Updated: 2013-05-20 04:00:00
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Updated: 2013-05-20 04:00:00
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Updated: 2013-05-20 04:00:00
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Updated: 2013-05-20 04:00:00
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Updated: 2013-05-20 04:00:00
Abstract
In order to define poliovirus (PV) neurovirulence at the molecular level, we comparatively analyze the primary amino acid sequence of Mahoney, a neurovirulent PV strain, versus (i) Sabin, an attenuated PV strain, and (ii) IS1, a PV isolate obtained in temporal association to a paralysis event from a polio vaccinated subject. We identify and describe 12 pentapeptides that, originally present in the Mahoney sequence, are changed in the non‐neurovirulent Sabin strain, and, successively, restored in IS1 strain. (Source: Journal of Basic Microbiology)
Updated: 2013-05-20 04:00:00
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Updated: 2013-05-20 04:00:00
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Updated: 2013-05-20 04:00:00
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Updated: 2013-05-20 04:00:00
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Updated: 2013-05-20 04:00:00
Abstract
Phage therapy presents an alternative therapeutic option in treating infections caused by methicillin‐resistant Staphylococcus aureus (MRSA) strains not responding to antibiotic therapy. However, it is essential to study the role of external factors that may influence the yield and potency of phage preparations intended for use in various in vitro and in vivo studies. The present study focuses on the effects of calcium in the entire infection process of a broad‐spectrum lytic bacteriophage: MR‐10. The presence of calcium increased the adsorption rate of the phage and also participated in the process of penetration of the phage genome into the host cytoplasm. A final concentration of 5 mM of calcium ions supplemented in soft agar during the phage titration process significa...
Updated: 2013-05-20 04:00:00
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Updated: 2013-05-20 04:00:00
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Updated: 2013-05-20 04:00:00
Abstract
Manure fertilizers are widely used in agriculture and highly impacted the soil microbial communities such as ammonia oxidizers. However, the knowledge on the communities of archaeal versus bacterial ammonia oxidizers in paddy soil affected by manure fertilization remains largely unknown, especially for a long‐term influence. In present work, the impact of manure fertilization on the population of ammonia oxidizers, related potential nitrification rates (PNRs) and the key factors manipulating the impact were investigated through studying two composite soil cores (long‐term fed with manure fertilization versus undisturbed). Moreover, soil incubated with NH4+ for 5 weeks was designed to verify the field research. The results showed that the copy numbers of bacterial amoA gene in ...
Updated: 2013-05-20 04:00:00
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Updated: 2013-05-20 04:00:00
In this study, we investigated the effects of sonication on the elimination of Staphylococcus epidermidis cell clusters from biofilms grown over time, and quantification was performed by three distinct analytical techniques. Even when a higher number of sonication cycles was used, some stable cell clusters remained in the samples obtained from 48‐ and 72‐h‐old biofilms, interfering with the quantification of sessile bacteria by plate counting. On the other hand, the fluorescence microscopy automatic counting system allowed proper quantification of biofilm samples that had undergone any of the described sonication cycles, suggesting that this is a more accurate method for assessing the cell concentration in S. epidermidis biofilms, especially in mature biofilms. (Source: Journal of Ba...
Updated: 2013-05-20 04:00:00
In this study, we performed extensive phylogenetic analyses to elucidate relationships among them. We analyzed sequences of the 16S rRNA gene and rplV–rpsC, rpoB, gyrB, dnaK, dnaJ, recA, and secY combined sequence data from two strains each of the four phytoplasmas from Hainan province, as well as strains of peanut witches'‐broom from Taiwan (PnWB‐TW), “Candidatus Phytoplasma australiense”, “Ca. Phytoplasma mali AT”, aster yellows witches'‐broom phytoplasma AYWB, and onion yellows phytoplasma OY‐M. In the 16S rRNA phylogenetic tree, the eight Hainan strains form a clade with PnWB‐TW. Analysis of the seven concatenated gene regions indicated that the four phytoplasmas collected from Hainan province cluster most closely with one another, but are closely related to PnWB‐...
Updated: 2013-05-20 04:00:00
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Updated: 2013-05-20 04:00:00
In conclusion, siderophore producing bacteria MPF47 have strong biocontrol abilities and its application as soil mix + seedling root treatments provided strong shield to plant roots against R. solani and could be used for effective bio‐management of pathogen. (Source: Journal of Basic Microbiology)
Updated: 2013-05-20 04:00:00
(Source: FEMS Immunology and Medical Microbiology)
Updated: 2013-05-20 04:00:00
ConclusionsWe have provided new evidence of the effects of PNCB, which suggest that PNCB attenuated α‐haemolysin‐mediated cell injury and protected mice from Staph. aureus pneumonia.
Significance and Impact of the StudyThe findings indicate that PNCB may be used as a basis for anti‐Staphylococcus agent. (Source: Journal of Applied Microbiology)
Updated: 2013-05-20 04:00:00
ConclusionNisin and temperature treatments improve the effectiveness of pressure in the inactivation of highly heat‐resistant spores of B. sporothermodurans.
Significance and Impact of the StudyThis study shows the potential of using high HP for a short time (5 min) in combination with moderate temperature and nisin to inactivate B. sporothermodurans spores in milk. Such treatments could be applied by the dairy industry to ensure the commercial sterility of UHT milk. (Source: Journal of Applied Microbiology)
Updated: 2013-05-20 04:00:00
AbstractHealthcare‐associated infections (HCAI) affect 5–10% of acute hospital admissions. Environmental decontamination is an important component of all strategies to prevent HCAI as many bacterial causes survive and persist in the environment, which serve as ongoing reservoirs of infection. Current approaches such as cleaning with detergents and the use of chemical disinfectant are suboptimal. We assessed the efficacy of helium and helium–air plasma in killing Staphylococcus aureus and Clostridium difficile on a glass surface and studied the impact on bacterial cells using atomic force microscopy (AFM). Both plasma types exhibited bactericidal effects on Staph. aureus (log3·6 – >log7), with increased activity against methicillin‐resistant strains, but had a negligible effe...
Updated: 2013-05-20 04:00:00
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Updated: 2013-05-20 04:00:00
AbstractThe potential of Bacillus licheniformis as a starter culture for aroma concentration improvement in the fermentation of Chinese Moutai‐flavour liquor was elucidated. The volatile compounds produced by B. licheniformis were identified by GC–MS, in which C4 compounds, pyrazines, volatile acids, aromatic and phenolic compounds were the main ingredients. The strains B. licheniformis (MT‐6 and MT‐15) produced more volatile compound concentrations, mainly C4 compounds, than the type strain of B. licheniformis (ATCC 14580) at the fermentation temperature of 55°C. Meanwhile, more volatile compound concentrations were produced by B. licheniformis in solid‐state fermentation than in submerged state fermentation. Thus, the strains MT‐6 and MT‐15 were used as the Bacillus st...
Updated: 2013-05-20 04:00:00
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Updated: 2013-05-20 04:00:00
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Updated: 2013-05-18 04:00:00
ConclusionT. chebula fruit extract contains bioactive compound effective against multidrug‐resistant uropathogens and this antibacterial activity may be due to its iron‐complexing property.This article is protected by copyright. All rights reserved. (Source: Journal of Applied Microbiology)
Updated: 2013-05-18 04:00:00
ConclusionsA previously unreported ParC‐ParB‐parS partition complex is formed in pCGR2, where interaction of ParC with ParB‐parS may affect the level of repression by ParB. Modifying the par components and antisense RNA enables manipulation of plasmid copy number to varying degrees.This article is protected by copyright. All rights reserved. (Source: Journal of Applied Microbiology)
Updated: 2013-05-18 04:00:00
ConclusionsThe experiment revealed the antibacterial effect of ppABP on the food pathogens. The ppABP from active films got diffused into the food matrix and reduced the growth rate and maximum growth population of the target microorganism. The ppABP‐activated films were found to be effective for biopreservation.This article is protected by copyright. All rights reserved. (Source: Journal of Applied Microbiology)
Updated: 2013-05-18 04:00:00
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Updated: 2013-05-18 04:00:00
This article is protected by copyright. All rights reserved. (Source: Letters in Applied Microbiology)MedWorm Sponsor Message: Find the best Christmas presents and January Sales in the UK with this simple shopping directory.
Updated: 2013-05-18 04:00:00
This article is protected by copyright. All rights reserved. (Source: Letters in Applied Microbiology)
Updated: 2013-05-18 04:00:00
This article is protected by copyright. All rights reserved. (Source: Letters in Applied Microbiology)
Updated: 2013-05-18 04:00:00
This article is protected by copyright. All rights reserved. (Source: Letters in Applied Microbiology)
Updated: 2013-05-18 04:00:00
This article is protected by copyright. All rights reserved. (Source: Letters in Applied Microbiology)
Updated: 2013-05-17 15:12:20
This article is protected by copyright. All rights reserved. (Source: Clinical Microbiology and Infection)
Updated: 2013-05-17 15:11:47
Skip to Main Content Home Help PUBLICATIONS BROWSE BY SUBJECT RESOURCES ABOUT US LOGIN Enter e-mail address Enter password REMEMBER ME NOT REGISTERED FORGOTTEN PASSWORD INSTITUTIONAL LOGIN Home Microbiology Virology Applied Microbiology Journal of Applied Microbiology Accepted Articles Abstract JOURNAL TOOLS Get New Content Alerts Get RSS feed Save to My Profile Get Sample Copy Recommend to Your Librarian JOURNAL MENU Journal Home FIND ISSUES Current Issue All Issues Virtual Issues FIND ARTICLES Early View Accepted Articles GET ACCESS Subscribe Renew FOR CONTRIBUTORS OnlineOpen Author Guidelines Submit an Article ABOUT THIS JOURNAL Society Information News Overview Editorial Board Permissions Advertise Contact SPECIAL FEATURES Virtual Issue on Biodefence Virtual Issue on Campylobacter
Updated: 2013-05-17 04:00:00
Abstract
Actinobacteria were isolated from the rhizosphere of yam plants from agricultural fields from Yeoju, South Korea and analyzed for their genetic and plant‐beneficial functional diversity. A total of 29 highly occurring actinobacterial isolates from the yam rhizosphere were screened for various plant‐beneficial traits such as antimicrobial activity on fungi and bacteria; biocontrol traits such as production of siderophore, protease, chitinase, endo‐cellulase, and β‐glucanase. The isolates were also screened for plant growth‐promoting (PGP) traits such as auxin production, phosphate solubilization, 1‐aminocyclopropane‐1‐carboxylic acid (ACC) deaminase activity, and in vitro Arabidopsis growth promotion. 16S rDNA sequence‐based phylogenetic analysis was carried out ...
Updated: 2013-05-17 04:00:00
Abstract
ECO‐0501 is a novel linear polyene antibiotic, which was discovered from Amycolatopsis orientalis. Recent study of ECO‐0501 biosynthesis pathway revealed the presence of regulatory gene: ECO‐orf4. The A. orientalis ECO‐orf4 gene from the ECO‐0501 biosynthesis cluster was analyzed, and its deduced protein (ECO‐orf4) was found to have amino acid sequence homology with large ATP‐binding regulators of the LuxR (LAL) family regulators. Database comparison revealed two hypothetical domains, a LuxR‐type helix‐turn‐helix (HTH) DNA binding motif near the C‐terminal and an N‐terminal nucleotide triphosphate (NTP) binding motif included. Deletion of the corresponding gene (ECO‐orf4) resulted in complete loss of ECO‐0501 production. Complementation by one copy of i...
Updated: 2013-05-17 04:00:00
Skip to Main Content Home Help PUBLICATIONS BROWSE BY SUBJECT RESOURCES ABOUT US LOGIN Enter e-mail address Enter password REMEMBER ME NOT REGISTERED FORGOTTEN PASSWORD INSTITUTIONAL LOGIN Home Microbiology Virology Microbiology Journal of Basic Microbiology Early View Abstract JOURNAL TOOLS Get New Content Alerts Get RSS feed Save to My Profile Get Sample Copy Recommend to Your Librarian JOURNAL MENU Journal Home FIND ISSUES Current Issue All Issues FIND ARTICLES Early View Most Accessed GET ACCESS Subscribe Renew FOR CONTRIBUTORS Submit an Article OnlineOpen Author Guidelines ABOUT THIS JOURNAL Contact Editorial Board Advertise Overview SPECIAL FEATURES Cover Gallery Read Cover Story Wiley Job Network Research Paper Mechanisms of plant growth promotion and disease suppression by
Updated: 2013-05-17 04:00:00
Abstract
Unorganized collections and over exploitation of naturally occurring medicinal plant Bacopa monniera is leading to rapid depletion of germplasm and is posing a great threat to its survival in natural habitats. The species has already been listed in the list of highly threatened plants of India. This calls for micropropagation based multiplication of potential accessions and understanding of their mycorrhizal associations for obtaining plants with enhanced secondary metabolite contents. The co‐cultivation of B. monniera with axenically cultivated root endophyte Piriformospora indica resulted in growth promotion, increase in bacoside content, antioxidant activity and nuclear hypertrophy of this medicinal plant. (Source: Journal of Basic Microbiology)
Updated: 2013-05-17 04:00:00
Skip to Main Content Home Help PUBLICATIONS BROWSE BY SUBJECT RESOURCES ABOUT US LOGIN Enter e-mail address Enter password REMEMBER ME NOT REGISTERED FORGOTTEN PASSWORD INSTITUTIONAL LOGIN Home Microbiology Virology Microbiology Journal of Basic Microbiology Early View Abstract JOURNAL TOOLS Get New Content Alerts Get RSS feed Save to My Profile Get Sample Copy Recommend to Your Librarian JOURNAL MENU Journal Home FIND ISSUES Current Issue All Issues FIND ARTICLES Early View Most Accessed GET ACCESS Subscribe Renew FOR CONTRIBUTORS Submit an Article OnlineOpen Author Guidelines ABOUT THIS JOURNAL Contact Editorial Board Advertise Overview SPECIAL FEATURES Cover Gallery Read Cover Story Wiley Job Network Research Paper ACC deaminase and IAA producing growth promoting bacteria from the
Updated: 2013-05-17 04:00:00
Abstract
Leaf‐cutting ants modify the properties of the soil adjacent to their nests. Here, we examined whether such an ant‐altered environment impacts the belowground fungal communities. Fungal diversity and community structure of soil from the fungus garden chambers of Atta sexdens rubropilosa and Atta bisphaerica, two widespread leaf‐cutting ants in Brazil, were determined and compared with non‐nest soils. Culture‐dependent methods revealed similar species richness but different community compositions between both types of soils. Penicillium janthinellum and Trichoderma spirale were the prevalent isolates in fungus chamber soils and non‐nest soils, respectively. In contrast to cultivation methods, analyses of clone libraries based on the internal transcribed spacer (ITS) reg...
Updated: 2013-05-17 04:00:00
In conclusion, there seems to be great concern regarding the distribution and drug resistance of CTX‐M ESBL‐producing E. coli. (Source: Journal of Basic Microbiology)
Updated: 2013-05-17 04:00:00
(Source: Journal of Applied Microbiology)
Updated: 2013-05-17 04:00:00
Summary
Protein glycosylation was once considered as an eccentricity of a few bacteria. However in the recent years multiple O‐glycosylation mechanisms have been identified in bacterial species from the most diverse genera, including various important human pathogens. This review focuses on summarizing the structural diversity, the various pathways, and the physiological roles of this post‐translational protein modification. We propose a classification of O‐glycosylation based on the requirement of an oligosaccharyltransferase (OTase). OTase‐dependent glycosylation utilizes an oligosaccharide synthesized on a lipid carrier that is transferred to proteins en bloc by an OTase. Multiple proteins, including the pilins, are glycosylated using this mechanism. OTase‐independent glycosyl...