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Brazilian Journal of Microbiology: [publication of the Brazilian Society for Microbiology]

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https://www.readbyqxmd.com/read/29132828/lactoferrin-chitosan-and-melaleuca-alternifolia-natural-products-that-show-promise-in-candidiasis-treatment
#1
REVIEW
Lorena de Oliveira Felipe, Willer Ferreira da Silva Júnior, Katialaine Corrêa de Araújo, Daniela Leite Fabrino
The evolution of microorganisms resistant to many medicines has become a major challenge for the scientific community around the world. Motivated by the gravity of such a situation, the World Health Organization released a report in 2014 with the aim of providing updated information on this critical scenario. Among the most worrying microorganisms, species from the genus Candida have exhibited a high rate of resistance to antifungal drugs. Therefore, the objective of this review is to show that the use of natural products (extracts or isolated biomolecules), along with conventional antifungal therapy, can be a very promising strategy to overcome microbial multiresistance...
November 10, 2017: Brazilian Journal of Microbiology: [publication of the Brazilian Society for Microbiology]
https://www.readbyqxmd.com/read/29129408/efficiency-of-decolorization-of-different-dyes-using-fungal-biomass-immobilized-on-different-solid-supports
#2
Wioletta Przyśtas, Ewa Zabłocka-Godlewska, Elżbieta Grabińska-Sota
Different technologies may be used for decolorization of wastewater containing dyes. Among them, biological processes are the most promising because they seem to be environmentally safe. The aim of this study was to determine the efficiency of decolorization of two dyes belonging to different classes (azo and triphenylmethane dyes) by immobilized biomass of strains of fungi (Pleurotus ostreatus - BWPH, Gleophyllum odoratum - DCa and Polyporus picipes - RWP17). Different solid supports were tested for biomass immobilization...
November 9, 2017: Brazilian Journal of Microbiology: [publication of the Brazilian Society for Microbiology]
https://www.readbyqxmd.com/read/29128395/structure-analysis-of-capsid-protein-of-porcine-circovirus-type-2-from-pigs-with-systemic-disease
#3
Danielle Gava, Vitor Hugo Balasco Serrão, Lana Teixeira Fernandes, Mauricio Egídio Cantão, Janice Reis Ciacci-Zanella, Nelson Morés, Rejane Schaefer
Economic losses with high mortality rate associated with Porcine circovirus type 2 (PCV2) is reported worldwide. PCV2 commercial vaccine was introduced in 2006 in U.S. and in 2008 in Brazil. Although PCV2 vaccines have been widely used, cases of PCV2 systemic disease have been reported in the last years. Eleven nursery or fattening pigs suffering from PCV2 systemic disease were selected from eight PCV2-vaccinated farms with historical records of PCV2 systemic disease in Southern Brazil. PCV2 genomes were amplified and sequenced from lymph node samples of selected pigs...
November 8, 2017: Brazilian Journal of Microbiology: [publication of the Brazilian Society for Microbiology]
https://www.readbyqxmd.com/read/29146152/improved-antifungal-activity-of-barley-derived-chitinase-i-gene-that-overexpress-a-32kda-recombinant-chitinase-in-escherichia-coli-host
#4
Nida Toufiq, Bushra Tabassum, Muhammad Umar Bhatti, Anwar Khan, Muhammad Tariq, Naila Shahid, Idrees Ahmad Nasir, Tayyab Husnain
Agricultural crops suffer many diseases, including fungal and bacterial infections, causing significant yield losses. The identification and characterisation of pathogenesis-related protein genes, such as chitinases, can lead to reduction in pathogen growth, thereby increasing tolerance against fungal pathogens. In the present study, the chitinase I gene was isolated from the genomic DNA of Barley (Hordeum vulgare L.) cultivar, Haider-93. The isolated DNA was used as template for the amplification of the ∼935bp full-length chitinase I gene...
October 31, 2017: Brazilian Journal of Microbiology: [publication of the Brazilian Society for Microbiology]
https://www.readbyqxmd.com/read/29122479/draft-genome-sequence-of-paraburkholderia-tropica-ppe8-strain-a-sugarcane-endophytic-diazotrophic-bacterium
#5
Paula Renata Alves da Silva, Jean Luiz Simões-Araújo, Márcia Soares Vidal, Leonardo Magalhães Cruz, Emanuel Maltempi de Souza, José Ivo Baldani
Paraburkholderia tropica (syn Burkholderia tropica) are nitrogen-fixing bacteria commonly found in sugarcane. The Paraburkholderia tropica strain Ppe8 is part of the sugarcane inoculant consortium that has a beneficial effect on yield. Here, we report a draft genome sequence of this strain elucidating the mechanisms involved in its interaction mainly with Poaceae. A genome size of approximately 8.75Mb containing 7844 protein coding genes distributed in 526 subsystems was de novo assembled with ABySS and annotated by RAST...
October 18, 2017: Brazilian Journal of Microbiology: [publication of the Brazilian Society for Microbiology]
https://www.readbyqxmd.com/read/29122478/long-term-cryopreservation-of-basidiomycetes
#6
REVIEW
Giani Andrea Linde, Alana Luciani, Ana Daniela Lopes, Juliana Silveira do Valle, Nelson Barros Colauto
Basidiomycetes have several biotechnological and industrial applications such as enzyme production, bioremediation, pharmaceutical and functional food production. Due to climatic features, the preservation of several basidiomycetes is threatened, and to guarantee the preservation of this genetic resource, the development of long-term preservation techniques is necessary once there is no universal protocol for the cryopreservation of basidiomycetes. Cryopreservation is a technique in which microorganisms are submitted to ultralow temperatures...
October 18, 2017: Brazilian Journal of Microbiology: [publication of the Brazilian Society for Microbiology]
https://www.readbyqxmd.com/read/29122477/development-and-characterization-of-an-innovative-synbiotic-fermented-beverage-based-on-vegetable-soybean
#7
Carolina Battistini, Beatriz Gullón, Erica Sayuri Ichimura, Ana Maria Pereira Gomes, Eliana Paula Ribeiro, Leo Kunigk, José Ubirajara Vieira Moreira, Cynthia Jurkiewicz
Soymilk was produced from vegetable soybean and fermented by probiotics (Lactobacillus acidophilus La-5, Bifidobacterium animalis Bb-12) in co-culture with Streptococcus thermophilus. The composition of the fermented beverage and oligosaccharides content were determined. The effect of fructooligosaccharides and inulin on the fermentation time and viability of probiotic microorganisms throughout 28 days of storage at 5°C were evaluated. The soymilk from vegetable soybeans was fermented in just 3.2h, when pH reached 4...
October 18, 2017: Brazilian Journal of Microbiology: [publication of the Brazilian Society for Microbiology]
https://www.readbyqxmd.com/read/29108975/rapid-detection-of-food-borne-salmonella-contamination-using-imbs-qpcr-method-based-on-pagc-gene
#8
Jiashun Wang, Yi Li, Jia Chen, Deping Hua, Yi Li, Hui Deng, Ying Li, Zhixuan Liang, Jinhai Huang
Detection of Salmonella is very important to minimize the food safety risk. In this study, the recombinant PagC protein and PagC antibody were prepared and coupled with immunomagnetic beads (IMBs) to capture Salmonella cells from pork and milk samples. And then the SYBR Green qualitative PCR was developed to detect the pathogenic Salmonella. The results showed that the PagC polyclonal antiserum is of good specificity and the capture rate of 0.1mg IMBs for Salmonella tended to be stable at the range of 70-74% corresponding to the concentrations between 10(1) and 10(4)CFU/mL...
October 18, 2017: Brazilian Journal of Microbiology: [publication of the Brazilian Society for Microbiology]
https://www.readbyqxmd.com/read/29108974/analysis-of-bacterial-communities-and-characterization-of-antimicrobial-strains-from-cave-microbiota
#9
Muhammad Yasir
In this study for the first-time microbial communities in the caves located in the mountain range of Hindu Kush were evaluated. The samples were analyzed using culture-independent (16S rRNA gene amplicon sequencing) and culture-dependent methods. The amplicon sequencing results revealed a broad taxonomic diversity, including 21 phyla and 20 candidate phyla. Proteobacteria were dominant in both caves, followed by Bacteroidetes, Actinobacteria, Firmicutes, Verrucomicrobia, Planctomycetes, and the archaeal phylum Euryarchaeota...
October 18, 2017: Brazilian Journal of Microbiology: [publication of the Brazilian Society for Microbiology]
https://www.readbyqxmd.com/read/29150248/cryopreservation-at-75%C3%A2-c-of-agaricus-subrufescens-on-wheat-grains-with-sucrose
#10
Lienine Luiz Zaghi Júnior, Ana Daniela Lopes, Fábio Aparecido Cordeiro, Itaruã Machri Colla, Míria Benetati Delgado Bertéli, Juliana Silveira do Valle, Giani Andrea Linde, Nelson Barros Colauto
Agaricus subrufescens is a basidiomycete which is studied because of its medicinal and gastronomic importance; however, less attention has been paid to its preservation. This study aimed to evaluate the effect of sucrose addition to substrate and cryotube on the viability of Agaricus subrufescens cryopreserved at -20°C and at -75°C for one and two years. Zero, 10% or 20% sucrose was added to potato dextrose agar or wheat grain. The mycelia were cryopreserved in the absence of cryoprotectant or with sucrose solutions at 15%, 30% or 45%...
October 13, 2017: Brazilian Journal of Microbiology: [publication of the Brazilian Society for Microbiology]
https://www.readbyqxmd.com/read/29117917/antagonistic-endophytic-bacteria-associated-with-nodules-of-soybean-glycine-max-l-and-plant-growth-promoting-properties
#11
LongFei Zhao, YaJun Xu, XinHe Lai
A total of 276 endophytic bacteria were isolated from the root nodules of soybean (Glycine max L.) grown in 14 sites in Henan Province, China. The inhibitory activity of these bacteria against pathogenic fungus Phytophthora sojae 01 was screened in vitro. Six strains with more than 63% inhibitory activities were further characterized through optical epifluorescence microscopic observation, sequencing, and phylogenetic analysis of 16S rRNA gene, potential plant growth-promoting properties analysis, and plant inoculation assay...
October 13, 2017: Brazilian Journal of Microbiology: [publication of the Brazilian Society for Microbiology]
https://www.readbyqxmd.com/read/29100932/evolution-of-equine-influenza-viruses-h3n8-during-a-brazilian-outbreak-2015
#12
Patricia Filippsen Favaro, Wilson Roberto Fernandes, Dilmara Reischak, Paulo Eduardo Brandão, Sheila Oliveira de Souza Silva, Leonardo José Richtzenhain
Equine influenza is one of the major respiratory infectious diseases in horses. An equine influenza virus outbreak was identified in vaccinated and unvaccinated horses in a veterinary school hospital in São Paulo, SP, Brazil, in September 2015. The twelve equine influenza viruses isolated belonged to Florida Clade 1. The hemagglutinin and neuraminidase amino acid sequences were compared with the recent isolates from North and South America and the World Organisation for Animal Health recommended Florida Clade 1 vaccine strain...
October 13, 2017: Brazilian Journal of Microbiology: [publication of the Brazilian Society for Microbiology]
https://www.readbyqxmd.com/read/29100931/effects-of-hurdle-technology-on-monascus-ruber-growth-in-green-table-olives-a-response-surface-methodology-approach
#13
Leandro P Cappato, Amanda M Dias Martins, Elisa H R Ferreira, Amauri Rosenthal
An ascomycetes fungus was isolated from brine storage of green olives of the Arauco cultivar imported from Argentina and identified as Monascus ruber. The combined effects of different concentrations of sodium chloride (3.5-5.5%), sodium benzoate (0-0.1%), potassium sorbate (0-0.05%) and temperature (30-40°C) were investigated on the growth of M. ruber in the brine of stored table olives using a response surface methodology. A full 2(4) factorial design with three central points was first used in order to screen for the important factors (significant and marginally significant factors) and then a Face-Centered Central Composite Design was applied...
October 13, 2017: Brazilian Journal of Microbiology: [publication of the Brazilian Society for Microbiology]
https://www.readbyqxmd.com/read/29100930/biofilm-formation-by-staphylococcus-aureus-and-salmonella-spp-under-mono-and-dual-species-conditions-and-their-sensitivity-to-cetrimonium-bromide-peracetic-acid-and-sodium-hypochlorite
#14
Maricarmen Iñiguez-Moreno, Melesio Gutiérrez-Lomelí, Pedro Javier Guerrero-Medina, María Guadalupe Avila-Novoa
The aim of this study was evaluated the biofilm formation by Staphylococcus aureus 4E and Salmonella spp. under mono and dual-species biofilms, onto stainless steel 316 (SS) and polypropylene B (PP), and their sensitivity to cetrimonium bromide, peracetic acid and sodium hypochlorite. The biofilms were developed by immersion of the surfaces in TSB by 10 d at 37°C. The results showed that in monospecies biofilms the type of surface not affected the cellular density (p>0.05). However, in dual-species biofilms on PP the adhesion of Salmonella spp...
October 13, 2017: Brazilian Journal of Microbiology: [publication of the Brazilian Society for Microbiology]
https://www.readbyqxmd.com/read/29097140/molecular-screening-of-blue-mussels-indicated-high-mid-summer-prevalence-of-human-genogroup-ii-noroviruses-including-the-pandemic-gii-4-2012-variants-in-uk-coastal-waters-during-2013
#15
Subhajit Biswas, Philippa Jackson, Rebecca Shannon, Katherine Dulwich, Soumi Sukla, Ronald A Dixon
This molecular study is the first report, to the best of our knowledge, on identification of norovirus, NoV GII.4 Sydney 2012 variants, from blue mussels collected from UK coastal waters. Blue mussels (three pooled samples from twelve mussels) collected during the 2013 summer months from UK coastal sites were screened by RT-PCR assays. PCR products of RdRP gene for noroviruses were purified, sequenced and subjected to phylogenetic analysis. All the samples tested positive for NoVs. Sequencing revealed that the NoV partial RdRP gene sequences from two pooled samples clustered with the pandemic "GII...
October 13, 2017: Brazilian Journal of Microbiology: [publication of the Brazilian Society for Microbiology]
https://www.readbyqxmd.com/read/29122476/efficacy-of-leptospiral-commercial-vaccines-on-the-protection-against-an-autochtonous-strain-recovered-in-brazil
#16
Rafael Bazaglia Sonada, Sérgio Santos de Azevedo, Francisco Rafael Martins Soto, Diego Figueiredo da Costa, Zenaide Maria de Morais, Gisele Oliveira de Souza, Amane Paldês Gonçales, Fabiana Miraglia, Sílvio Arruda Vasconcellos
In swine and bovines, leptospirosis prevention and control is carried out via vaccination of susceptible animals using bacterins. However, the efficiency of leptospirosis vaccines has been questioned. This work aimed to investigate the potency of five leptospirosis vaccines sold commercially in Brazil, challenging the animals with one autochthonous strain of Leptospira, Canicola serovar, denoted LO4, isolated from swine. The standard protocol was followed, and renal carriers of Leptospira were identified among the surviving animals by culture and PCR...
October 12, 2017: Brazilian Journal of Microbiology: [publication of the Brazilian Society for Microbiology]
https://www.readbyqxmd.com/read/29107584/first-molecular-typing-of-mycobacterium-avium-subspecies-paratuberculosis-identified-in-animal-and-human-drinking-water-from-dairy-goat-farms-in-brazil
#17
Isis F Espeschit, Marina C C Souza, Magna C Lima, Maria A S Moreira
Mycobacterium avium subspecies paratuberculosis, the etiologic agent of Johne's disease or paratuberculosis, was identified by culture and/or polymerase chain reaction (PCR) in 50% and 30% of water samples for animal and human consumption, respectively, from ten dairy goat farms in Brazil. IS1311 restriction fragment length polymorphism analysis identified the isolates as cattle type C.
October 12, 2017: Brazilian Journal of Microbiology: [publication of the Brazilian Society for Microbiology]
https://www.readbyqxmd.com/read/29102294/anaerobic-biodegradation-of-benzo-a-pyrene-by-a-novel-cellulosimicrobium-cellulans-cws2-isolated-from-polycyclic-aromatic-hydrocarbon-contaminated-soil
#18
Wei Qin, Fuqiang Fan, Yi Zhu, Xiaolong Huang, Aizhong Ding, Xiang Liu, Junfeng Dou
Cellulosimicrobium cellulans CWS2, a novel strain capable of utilizing benzo(a)pyrene (BaP) as the sole carbon and energy source under nitrate-reducing conditions, was isolated from PAH-contaminated soil. Temperature and pH significantly affected BaP biodegradation, and the strain exhibited enhanced biodegradation ability at temperatures above 30°C and between pH 7 and 10. The highest BaP removal rate (78.8%) was observed in 13 days when the initial BaP concentration was 10mg/L, and the strain degraded BaP at constant rate even at a higher concentration (50mg/L)...
October 12, 2017: Brazilian Journal of Microbiology: [publication of the Brazilian Society for Microbiology]
https://www.readbyqxmd.com/read/29102293/a-new-coumarin-derivative-4-acetatecoumarin-with-antifungal-activity-and-association-study-against-aspergillus-spp
#19
Felipe Q S Guerra, Rodrigo S A Araújo, Janiere P Sousa, Viviane A Silva, Fillipe O Pereira, Francisco J B Mendonça-Junior, José M Barbosa-Filho, Julio Abrantes Pereira, Edeltrudes O Lima
Fungal infections have become a concern for health professionals, and the emergence of resistant strains has been reported for all known classes of antifungal drugs. Among the fungi causing disease, we highlight those that belong to the genus Aspergillus. For these reasons, the search for new antifungals is important. This study examines the effects of a coumarin derivative, 4-acetatecoumarin (Cou-UMB16) both alone and together with antifungal drugs, and its mode of action against Aspergillus spp. Cou-UMB16 was tested to evaluate its effects on mycelia growth, and germination of Aspergillus spp...
October 12, 2017: Brazilian Journal of Microbiology: [publication of the Brazilian Society for Microbiology]
https://www.readbyqxmd.com/read/28927873/genome-sequence-of-streptomyces-mangrovisoli-musc-149-t-isolated-from-intertidal-sediments
#20
Hooi-Leng Ser, Wen-Si Tan, Nurul-Syakima Ab Mutalib, Wai-Fong Yin, Kok-Gan Chan, Bey-Hing Goh, Learn-Han Lee
As the largest genus in Actinobacteria family, Streptomyces species have the ability to synthesize numerous compounds of diverse structures with bioactivities. Streptomyces mangrovisoli MUSC 149(T) was previously isolated as a novel streptomycete from mangrove forest in east coast of Peninsular Malaysia. The high quality draft genome of MUSC 149(T) comprises 9,165,825bp with G+C content of 72.5%. Through bioinformatics analysis, 21 gene clusters identified in the genome were associated with the production of bioactive secondary metabolites...
September 6, 2017: Brazilian Journal of Microbiology: [publication of the Brazilian Society for Microbiology]
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