17,751 results match your criteria strains maximum

Acetaminophen degradation using bacterial strains isolated from winogradsky column and phytotoxicity analysis of dump site soil.

Chemosphere 2021 Jul 16;286(Pt 1):131570. Epub 2021 Jul 16.

Department of Biotechnology, Stella Maris College (Autonomous), Affiliated to University of Madras, Chennai, 600086, India. Electronic address:

The increase in pollution increased the threat level of living organisms in the environment. Municipal Solid Waste is one of the most important wastes which contribute to polluted sites affecting livelihood. They pollute the water stream, marine environment ecology, soil fertility, and agriculture production. Read More

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Antibacterial activity and phytochemical characterisation of Saussurea gossypiphora D. Don.

Arch Microbiol 2021 Jul 22. Epub 2021 Jul 22.

Department of Biological Chemistry, Regional University of Cariri (URCA), Crato, Ceará, CEP:63105-000, Brazil.

The study demonstrates that S. gossypiphora contain number of secondary metabolites such as steroids, tannins, flavonoids, phenolics, carbohydrates, saponins, and amino acids. Methanolic extract (MESG) of the plant contained highest quantity of phenolics, flavonoids and has greater antioxidant, anti-inflammatory and antibacterial activity in comparison to other extracts. Read More

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Comparative Whole Genome Sequence Analysis and Biological Features of Sequence Type 2.

Front Microbiol 2021 5;12:651520. Epub 2021 Jul 5.

School of Laboratory Medicine, Hangzhou Medical College, Hangzhou, China.

sequence type 2 (ST2) has been increasingly recognized as one of the major genotypes in China, while the genomic characteristics and biological phenotypes of Chinese ST2 strains remain to be determined. We used whole-genome sequencing and phylogenetic analysis to investigate the genomic features of 182 ST2 strains, isolated between 2011 and 2017. PCR ribotyping (RT) was performed, and antibiotic resistance, toxin concentration, and sporulation capacity were measured. Read More

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Antibacterial potential of hive bees honey from Himachal Pradesh, India.

Arch Microbiol 2021 Jul 21. Epub 2021 Jul 21.

Department of Entomology, College of Horticulture, Dr YSP University of Horticulture & Forestry Nauni, Solan, 173230, Himachal Pradesh, India.

This paper presents a pioneer study on the microbial diversity and antibacterial potential of hive bees (Apis cerana and A. mellifera) honey collected from Himachal Pradesh. In total, 26 bacteria (14 from A. Read More

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Colletotrichum fioriniae infecting invasive Japanese hop (Humulus scandens) in the United States.

Plant Dis 2021 Jul 19. Epub 2021 Jul 19.

USDA-ARS Foreign Disease-Weed Science Research Unit, 57689, 1301 Ditto Ave., Fort Detrick, Maryland, United States, 21702;

Japanese hop (Humulus scandens) is a non-native, invasive plant that colonizes disturbed riparian areas throughout the eastern United States and Canada, forming dense, monocultural stands that displace native plant communities due to a high reproductive rate, rapid growth, climbing bines, and dense shading (Balogh and Dancza 2008). It is capable of serving as a reservoir for agronomically important plant pathogens, such as the Tomato spotted wilt virus and powdery mildew species that infect commercial hemp and hop fields (Yoon et al. 2018; Weldon et al. Read More

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Dynamics of extended-spectrum beta-lactamase-producing colonization in long-term carriers following travel abroad.

Microb Genom 2021 Jul;7(7)

Département Biologie Computationnelle, Institut Pasteur, USR 3756 CNRS, F-75015 Paris, France.

Travel to tropical regions is associated with high risk of acquiring extended-spectrum beta-lactamase-producing (ESBL-E) that are typically cleared in less than 3 months following return. The conditions leading to persistent carriage that exceeds 3 months in some travellers require investigation. Whole-genome sequencing (Illumina MiSeq) was performed on the 82 ESBL-E isolates detected upon return and 1, 2, 3, 6 and 12 months later from the stools of 11 long-term (>3 months) ESBL-E carriers following travel abroad. Read More

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First Report of Epicoccum nigrum Causing Brown Leaf Spot in Tea in Guizhou Province, China.

Plant Dis 2021 Jul 16. Epub 2021 Jul 16.

Guizhou University, 71206, Key Laboratory of Green Pesticide and Agricultural Bioengineering, Ministry of Education, Huaxi street, Guiyang City, Guizhou Province, Guiyang, China, 550025;

Brown leaf spots were observed on tea [Camellia sinensis (L.) Kuntze] in Sinan County (27.74 °N, 108. Read More

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Cell-free extract assisted synthesis of ZnO nanoparticles using aquatic bacterial strains: Biological activities and toxicological evaluation.

Int J Pharm 2021 Jul 13;606:120878. Epub 2021 Jul 13.

Department of Chemistry, Faculty of Science, Ferdowsi University of Mashhad, Mashhad 9177948974, Iran. Electronic address:

The introduction of novel bacterial strains and the development of microbial approaches for nanoparticles biosynthesis could minimize the negative environmental impact and eliminate the concern and challenges of the available approaches. In this study, a biological method based on microbial cell-free extract was used for biosynthesis of ZnO NPs using two new aquatic bacteria, Marinobacter sp. 2C8 and Vibrio sp. Read More

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Bacterial strains integrated with surfactin molecules of Bacillus subtilis MTCC441 enrich nematocidal activity against Meloidogyne incognita.

Plant Biol (Stuttg) 2021 Jul 15. Epub 2021 Jul 15.

Department of Botany, Aligarh Muslim University, Aligarh, UP, India.

Bacteria secrete lipopeptide (surfactin) molecules, which are known to act as natural antibiotics. Recently, research on lipopeptide molecules has grown because of their role in increasing resistance to plant pathogens. Isolated surfactin molecules at several concentrations, viz. Read More

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Large dynamic-range fiber Bragg grating sensor system for acoustic emission detection.

Appl Opt 2021 Jul;60(19):5547-5552

A distributed feedback (DFB) fiber laser and fiber Bragg gratings (FBGs) are configured to demodulate the wavelength shifts of FBG dynamic strain sensors. The FBG sensors act as sensing units to detect the dynamic strain and the demodulators while the DFB fiber laser only acts as a narrow-linewidth light source. As the reflective spectrum of the FBG sensor changes due to dynamic strains, the output is subsequently converted into a corresponding intensity change and detected directly by a photodetector. Read More

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Antibacterial and cytotoxic potency of thermophilic Streptomyces werraensis MI-S.24-3 isolated from an Egyptian extreme environment.

Arch Microbiol 2021 Jul 14. Epub 2021 Jul 14.

Colin Ratledge Center for Microbial Lipids, School of Agricultural Engineering and Food Science, Shandong University of Technology, Zibo, 255000, China.

The need for novel and active antibiotics specially from actinomycetes is essential due to new and drug-resistant pathogens. In this study, 87 actinomycetes were isolated, and 18 strains among them characterized as thermophilic actinomycetes. Further fractionation and preliminary antibacterial activities indicated that one strain, coded as MI-S. Read More

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Bioprospecting of Palmyra Palm () Nectar: Unveiling the Probiotic and Therapeutic Potential of the Traditional Rural Drink.

Front Microbiol 2021 28;12:683996. Epub 2021 Jun 28.

Centre for Microbial and Fermentation Technology, Department of Microbiology, University College of Science, Osmania University, Hyderabad, India.

The present study investigates the therapeutic and probiotic attributes of traditional Toddy Palm Nectar (TPN). Glucose was found to be the highest with 4.37 mg/ml and arabinose was the least with 2. Read More

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First Report of Colletotrichum fructicola Causing Anthracnose on Camellia yuhsienensis Hu in China.

Plant Dis 2021 Jul 14. Epub 2021 Jul 14.

Chang Sha, China;

Camellia yuhsienensis Hu is an endemic species from China, where is the predominant oilseed crop due to its anthracnose resistance (Kuang 2015; J. Li et al. 2020; Nie et al. Read More

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Comparative study: nonsynonymous and synonymous substitution of SARS-CoV-2, SARS-CoV, and MERS-CoV genome.

Genomics Inform 2021 Jun 21;19(2):e15. Epub 2021 Jun 21.

Department of Chemical & Bio Engineering, Beant College of Engineering & Technology, Gurdaspur 143521, India.

The direction of evolution can estimate based on the variation among nonsynonymous to synonymous substitution. The simulative study investigated the nucleotide sequence of closely related strains of respiratory syndrome viruses, codon-by-codon with maximum likelihood analysis, z selection, and the divergence time. The simulated results, dN/dS > 1 signify that an entire substitution model tends towards the hypothesis's positive evolution. Read More

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Characterization of a Coliphage AS1 isolated from sewage effluent in Pakistan.

Braz J Biol 2021 9;82:e240943. Epub 2021 Jul 9.

University of Swabi, Department of Microbiology, Swabi, KP, Pakistan.

The emergence of multi-drug resistant (MDR) bacterial strains, which are posing a global health threat has developed the interest of scientists to use bacteriophages instead of conventional antibiotics therapy. In light of an increased interest in the use of phage as a bacterial control agent, the study aimed to isolate and characterize lytic phages from sewage effluent. During the current study, bacteriophage AS1 was isolated from sewage effluent against E. Read More

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Bioinformatics Analysis and Identification of Phytoene Synthase Gene in Microalgae.

Recent Pat Biotechnol 2021 Jul 12. Epub 2021 Jul 12.

Pharmaceutical Sciences Research Centre, Shiraz University of Medical Sciences, P.O. Box 71468-64685, Shiraz, Iran.

Background: Carotenoids are known as lipophilic secondary metabolites with important biological activities, which are mostly used in the food and pharmaceutical industry. They contribute to the colours of many fruits and flowers. Studies on the biosynthetic pathways of isoprenoids and carotenoids are still scarce, especially in microalgae, and are limited to specific groups Dunaliella spp. Read More

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A novel intramedullary nail to control interfragmentary motion in diaphyseal tibial fractures.

J Orthop Res 2021 Jul 12. Epub 2021 Jul 12.

The J. Vernon Luck, Sr., M.D. Orthopaedic Research Center, Orthopaedic Institute for Children in Alliance with UCLA, Los Angeles, California, USA.

Numerous animal and human studies have demonstrated the benefit of controlled interfragmentary motion on fracture healing. In this study, we quantified interfragmentary motion and load transfer in tibial fractures fixed using a novel intramedullary nail (IMN) that allows controlled axial motion. Fifty composite tibias with various fracture patterns were utilized. Read More

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Screening of sunflower associated bacteria as biocontrol agents for plant growth promotion.

Arch Microbiol 2021 Jul 11. Epub 2021 Jul 11.

Department of Plant Biology Foran Hall, School of Environmental and Biological Sciences, SEBS; Cook Campus, Rutgers University New Brunswick, 59 Dudley Rd, New Brunswick, NJ, 08901 , USA.

Deleterious effects of artificially applied chemicals have highlighted the significance of biocontrol agents as suitable substitute for sustainable agriculture. In present study, three endophytic bacterial strains SV7, SV10 and LV19 showed extensive range of antifungal as well as plant growth promoting activities signifying potential to accomplish the requirement. Phylogenetic analysis revealed 100% similarity of three strains with taxon Firmicute. Read More

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Phytochemical screening and biological activities of Bromus pectinatus Thunb.

Pak J Pharm Sci 2021 Jan;34(1):151-156

Department of Botany, University of Science and Technology, Bannu, Pakistan.

The present research study investigates the phytochemical and pharmacological importance of Bromus pectinatus. Qualitative phytochemical analysis of this plant was carried out to use standard method for the presence of various bioactive constituents. Results showed the ethanolic extract contain natural product such as steroids, alkaloids, tannins, coumarin, saponins, flavonoids and phenols. Read More

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January 2021

Modeling the Biomechanics of the Lamina Cribrosa Microstructure in the Human Eye.

Acta Biomater 2021 Jul 7. Epub 2021 Jul 7.

Department of Ophthalmology and Visual Sciences, University of Alabama at Birmingham, Birmingham, AL, United States. Electronic address:

Glaucoma is among the leading causes of blindness worldwide that is characterized by irreversible damage to the retinal ganglion cell axons in the lamina cribrosa (LC) region of the optic nerve head (ONH), most often associated with elevated intraocular pressure (IOP). The LC is a porous, connective tissue structure that provides mechanical support to the axons as they exit the eye and the biomechanics of the LC microstructure likely play a crucial role in protecting the axons passing through it. There is a limited knowledge of the IOP-driven biomechanics of the LC microstructure, primarily due to its small size and the difficulty with imaging the LC both in vitro and in vivo. Read More

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Morphological, molecular characterization, plant pathogenicity and biocontrol of Cladosporium complex groups associated with faba beans.

Sci Rep 2021 Jul 9;11(1):14183. Epub 2021 Jul 9.

Botany and Microbiology Department, Faculty of Science, South Valley University, Qena, Egypt.

Vicia faba (faba bean) is one of the most significant leguminous crops. The faba bean is specialized by maximum nutritional value, in energy and protein content, which leads it to be suitable for food and feed production. Diseases caused with fungi are amongst the biotic factors responsible for decreasing in faba bean yields. Read More

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Distribution of virulence factors and its relatedness towards the antimicrobial response of enterotoxigenic Escherichia coli (ETEC) strains isolated from patients in Kolkata, India.

J Appl Microbiol 2021 Jul 9. Epub 2021 Jul 9.

Division of Biochemistry, ICMR-National Institute of Cholera and Enteric Diseases, Kolkata, India.

Aim: Enterotoxigenic Escherichia coli (ETEC) is one of the most widely recognized diarrheal pathogens in developing countries. Advancement of ETEC vaccine development depends on the antigenic determinants of the ETEC isolates from a particular geographical region. So, the aim here was to comprehend the distribution of virulence determinants of the clinical ETEC strains of this region. Read More

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Systematic variation in the temperature dependence of bacterial carbon use efficiency.

Ecol Lett 2021 Jul 9. Epub 2021 Jul 9.

Department of Life Sciences, Imperial College London, Ascot, Berkshire, UK.

Carbon use efficiency (CUE) is a key characteristic of microbial physiology and underlies community-level responses to changing environments. Yet, we currently lack general empirical insights into variation in microbial CUE at the level of individual taxa. Here, through experiments with 29 strains of environmentally isolated bacteria, we find that bacterial CUE typically responds either positively to temperature, or has no discernible response, within biologically meaningful temperature ranges. Read More

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[Association of sepM gene mutation with mutacin Ⅳ production by ].

Nan Fang Yi Ke Da Xue Xue Bao 2021 Jun;41(6):876-882

Department of Health Inspection and Quarantine, Bengbu Medical College, Bengbu 233030, China.

Objective: To investigate the types of gene mutations and their distribution in clinical isolates of () and explore the association of gene mutation with the capacity of mutacin Ⅳ production by S. mutans.

Objective: We assessed the capacity of mutacin Ⅳ production in 80 clinical isolates of using an inhibition zone assay. Read More

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Phytochemical, antimicrobial, antioxidant and enzyme inhibitory potential of medicinal plant Dryopteris ramosa (Hope) C. Chr.

BMC Complement Med Ther 2021 Jul 8;21(1):197. Epub 2021 Jul 8.

Department of Pharmacy, COMSATS University Islamabad, Abbottabad, Campus-22060, Pakistan.

Background: Dryopteris ramosa has numerous potentials uses in the treatment of different maladies as old traditional medication. The fronds of D. ramose are edible and orally administered for producing antibiotic effect. Read More

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Enhancing the production of γ-aminobutyric acid in Escherichia coli BL21 by engineering the enzymes of the regeneration pathway of the coenzyme factor pyridoxal 5'-phosphate.

World J Microbiol Biotechnol 2021 Jul 8;37(8):130. Epub 2021 Jul 8.

College of Food Science and Biotechnology, Zhejiang Gongshang University, 149 Jiaogong Road, Hangzhou, Zhejiang Province, 310035, People's Republic of China.

The compound γ-aminobutyric acid (GABA) was widely used in various fields. To enhance the production of GABA in Escherichia coli BL21(DE3), the enzymes of the regeneration pathway of the coenzyme factor pyridoxal 5'-phosphate (PLP) were engineered. The recombinant E. Read More

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Left ventricular longitudinal strain is a major determinant of CT-derived three-dimensional maximum principal strain: comparison with two-dimensional speckle tracking echocardiography.

Heart Vessels 2021 Jul 7. Epub 2021 Jul 7.

Department of Cardiology, Pulmonology, Hypertension and Nephrology, Ehime University Graduate School of Medicine, Shitsukawa, Toon, Ehime, 791-0295, Japan.

Computed tomography (CT)-derived three-dimensional maximum principal strain (MP-strain) can provide incremental value to coronary CT angiography for cardiac dysfunction assessment with high diagnostic performance in patients with myocardial infarction. Global longitudinal strain (GLS) measured using two-dimensional speckle tracking echocardiography (2D-STE) is more sensitive than left ventricular ejection fraction (LVEF) for detecting early myocardial dysfunction. We aimed to compare CT-derived MP-strain with each of 2D-STE-derived strains (i. Read More

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Distribution of Antimicrobial Resistance and Virulence Genes within the Prophage-Associated Regions in Nosocomial Pathogens.

mSphere 2021 Jul 7:e0045221. Epub 2021 Jul 7.

Antimicrobial Resistance Research Center, National Institute of Infectious Diseases, Higashi Murayama, Tokyo, Japan.

Prophages are often involved in host survival strategies and contribute toward increasing the genetic diversity of the host genome. Prophages also drive horizontal propagation of various genes as vehicles. However, there are few retrospective studies contributing to the propagation of antimicrobial resistance (AMR) and virulence factor (VF) genes by prophage. Read More

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Genome data vs MLST for exploring intraspecific evolutionary history in bacteria: Much is not always better.

Infect Genet Evol 2021 Jul 2;93:104990. Epub 2021 Jul 2.

Instituto de Patología Experimental (IPE), UNSa-CONICET, Av. Bolivia 5150, Salta, Argentina. Electronic address:

Genome-based phylogeny has been proposed to be more accurate than phylogeny based in a few genes as MLST-based phylogeny. However, much is not always better. Here we analyzed 368 complete genomes corresponding to 9 bacterial species in order to address intraspecific phylogeny. Read More

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High prevalence of and nosocomial transmission of hypervirulent epidemic clones of at a tertiary hospital in Ethiopia.

JAC Antimicrob Resist 2021 Mar 3;3(1):dlab001. Epub 2021 Feb 3.

Department of Laboratory Medicine, Division of Clinical Microbiology, Karolinska Institutet, Stockholm, Sweden.

Background: Genomic epidemiology of antibiotic resistance is not sufficiently studied in low-income countries.

Objectives: To determine prevalence of ESBL production, and resistome and virulome profiles, of isolated at Jimma Medical Center, Ethiopia.

Methods: Strains isolated from patients with suspected infections between June and November 2016 were characterized by MALDI-TOF for species identification and disc diffusion for antimicrobial susceptibility testing. Read More

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