journal
MENU ▼
Read by QxMD icon Read
search

Archives of Microbiology

journal
https://www.readbyqxmd.com/read/28213763/the-lactobacillus-rhamnosus-and-lactobacillus-fermentum-strains-from-human-biotopes-characterized-with-mlst-and-toxin-antitoxin-gene-polymorphism
#1
E U Poluektova, R A Yunes, M V Epiphanova, V S Orlova, V N Danilenko
The diversity of Lb. rhamnosus and Lb. fermentum strains isolated from feces, saliva, and the vaginal cavity of 18-22-year-old healthy women residing in central regions of the Russian Federation has been characterized. The results obtained using multilocus sequence typing were identical to those obtained with the analysis of genetic and genomic polymorphism in TA systems. Different as well as identical Lb. rhamnosus and Lb. fermentum sequence types (ST) were isolated from various parts of the body of the same person...
February 17, 2017: Archives of Microbiology
https://www.readbyqxmd.com/read/28204863/influence-of-twitching-and-swarming-motilities-on-biofilm-formation-in-pseudomonas-strains
#2
Letícia Muner Otton, Marina da Silva Campos, Karine Lena Meneghetti, Gertrudes Corção
The genus Pseudomonas mainly includes opportunistic pathogens that rely on type IV pili as an important virulence factor, which is associated with adherence and biofilm formation. Pseudomonas infections are well known to be persistent and resilient in nature largely because of the tendency of the species to form biofilms. This study aimed at analyzing environmental strains of Pseudomonas genus with respect to their ability to execute twitching and swarming motilities as well as with respect to their ability to form biofilms both in the presence as well as in the absence of furanone, a substance that has the potential to prevent the formation of biofilms...
February 15, 2017: Archives of Microbiology
https://www.readbyqxmd.com/read/28184966/recombinant-bacillus-thuringiensis-subsp-kurstaki-hd73-strain-that-synthesizes-cry1ac-and-chimeric-chia74%C3%A2-sp-chitinase-inclusions
#3
Karen S González-Ponce, Luz E Casados-Vázquez, Rubén Salcedo-Hernández, Dennis K Bideshi, María C Del Rincón-Castro, José E Barboza-Corona
In this study, the endochitinase chiA74 gene lacking its secretion signal peptide sequence (chiA74∆sp) was fused in frame with the sequence coding for the C-terminal crystallization domain and transcription terminator of cry1Ac. The chimeric gene was expressed under the strong pcytA-p/STAB-SD promoter system in an acrystalliferous Cry(-)B strain of Bacillus thuringiensis and B. thuringiensis subsp. kurstaki HD73. We showed that the chimeric ChiA74∆sp produced amorphous inclusions in both Cry(-)B and HD73...
February 9, 2017: Archives of Microbiology
https://www.readbyqxmd.com/read/28184965/organophosphonates-utilization-by-soil-strains-of-ochrobactrum-anthropi-and-achromobacter-sp
#4
Inna T Ermakova, Tatyana V Shushkova, Alexey V Sviridov, Nina F Zelenkova, Natalya G Vinokurova, Boris P Baskunov, Alexey A Leontievsky
Four bacterial strains from glyphosate- or alkylphosphonates-contaminated soils were tested for ability to utilize different organophosphonates. All studied strains readily utilized methylphosphonic acid and a number of other phosphonates, but differed in their ability to degrade glyphosate. Only strains Ochrobactrum anthropi GPK 3 and Achromobacter sp. Kg 16 utilized this compound after isolation from enrichment cultures with glyphosate. Achromobacter sp. MPK 7 from the same enrichment culture, similar to Achromobacter sp...
February 9, 2017: Archives of Microbiology
https://www.readbyqxmd.com/read/28180951/bradyrhizobium-centrolobii-and-bradyrhizobium-macuxiense-sp-nov-isolated-from-centrolobium-paraense-grown-in-soil-of-amazonia-brazil
#5
Daniele C Michel, Samuel R Passos, Jean L Simões-Araujo, Alexandre C Baraúna, Krisle da Silva, Marcia M Parma, Itamar S Melo, Sofie E De Meyer, Graham O'Hara, Jerri E Zilli
Thirteen Gram-negative, aerobic, motile with polar flagella, rod-shaped bacteria were isolated from root nodules of Centrolobium paraense Tul. grown in soils from the Amazon region of Brazil. Growth of strains was observed at temperature range 20-36 °C (optimal 28 °C), pH ranges 5-11 (optimal 6.0-7.0), and 0.1-0.5%NaCl (optimal 0.1-0.3%). Analysis of 16S rRNA gene placed the strains into two groups within Bradyrhizobium. Closest neighbouring species (98.8%) for group I was B. neotropicale while for group II were 12 species with more than 99% of similarity...
February 8, 2017: Archives of Microbiology
https://www.readbyqxmd.com/read/28175928/genome-characterization-of-pasteurella-multocida-subspecies-septica-and-comparison-with-pasteurella-multocida-subspecies-multocida-and-gallicida
#6
Zhong Peng, Wan Liang, Wenjing Liu, Huanchun Chen, Bin Wu
Pasteurella multocida: subspecies multocida, gallicida, and septica are noted to have a contribution to fowl cholera, a life-threatening disease to both domestic and wild bird species. The genome sequences of avian P. multocida subspecies gallicida and multocida have been well analyzed and compared. However, the genome characterization of avian P. multocida subspecies septica is rarely discussed. In this study, we determined the draft genome sequence of a virulent P. multocida subspecies septica serogroup A strain HB02...
February 7, 2017: Archives of Microbiology
https://www.readbyqxmd.com/read/28144921/comparative-transcriptome-analysis-of-trueperella-pyogenes-reveals-a-novel-antimicrobial-strategy
#7
Kelei Zhao, Wujiao Li, Ting Huang, Xuhao Song, Xiuyue Zhang, Bisong Yue
Trueperella pyogenes is a prevalent opportunistic bacterium that normally causes diverse suppurative lesions, endometritis and pneumonia in various economically important animals. Although the genomic information of this species has been announced, little is known about its functional profiles. In this study, by performing a comparative transcriptome analysis between the highly and moderately virulent T. pyogenes isolates, we found the expression of a LuxR-type DNA-binding response regulator, PloR, was significantly up-regulated in the highly virulent T...
January 31, 2017: Archives of Microbiology
https://www.readbyqxmd.com/read/28138738/expression-of-a-codon-optimized-%C3%AE-glucosidase-from-cellulomonas-flavigena-pr-22-in-saccharomyces-cerevisiae-for-bioethanol-production-from-cellobiose
#8
Francisco Javier Ríos-Fránquez, Enrique González-Bautista, Teresa Ponce-Noyola, Ana Carmela Ramos-Valdivia, Héctor Mario Poggi-Varaldo, Jaime García-Mena, Alfredo Martinez
Bioethanol is one of the main biofuels produced from the fermentation of saccharified agricultural waste; however, this technology needs to be optimized for profitability. Because the commonly used ethanologenic yeast strains are unable to assimilate cellobiose, several efforts have been made to express cellulose hydrolytic enzymes in these yeasts to produce ethanol from lignocellulose. The C. flavigenabglA gene encoding β-glucosidase catalytic subunit was optimized for preferential codon usage in S. cerevisiae...
January 30, 2017: Archives of Microbiology
https://www.readbyqxmd.com/read/28108749/deinococcus-malanensis-sp-nov-isolated-from-radiation-polluted-soil
#9
Jing Zhu, Shan-Hui Li, Qi-Yong Tang, Min Chu, Wei Wang, Nimaichand Salam, Li Li, Wael N Hozzein, Zhi-Dong Zhang, Wen-Jun Li
A Gram-staining positive, non-spore forming, short rod-shaped and coccus-shaped, non-motile, pink-colored, gamma- and UV-resistant strain, designated T93(T) was isolated from soil of Malan area in Xinjiang Uyghur Autonomous Region, Northwest China. The taxonomic position of the new isolate was determined using a polyphasic approach. Strain T93(T) shared the highest 16 S rRNA gene sequence similarity with Deinococcus deserti VCD115(T) (97.54%). The genomic DNA G+C content of the isolate T93(T) was 61.7 mol%...
January 20, 2017: Archives of Microbiology
https://www.readbyqxmd.com/read/28105505/frankia-discariae-sp-nov-an-infective-and-effective-microsymbiont-isolated-from-the-root-nodule-of-discaria-trinervis
#10
Imen Nouioui, Maria Del Carmen Montero-Calasanz, Faten Ghodhbane-Gtari, Manfred Rohde, Louis S Tisa, Hans-Peter Klenk, Maher Gtari
Strain BCU110501(T) was the first isolate reported to fulfill Koch's postulates by inducing effective nodules on its host plant of origin Discaria trinervis (Rhalmnaceae). Based on 16S rRNA gene sequence similarities, the strain was found to be most closely related to the type strain of Frankia elaeagni DSM 46783(T) (98.6%) followed by F. alni DSM 45986(T) (98.2%), F. casuarinae DSM 45818(T) (97.8%) and F. inefficacies DSM 45817(T) (97.8%). Digital DNA:DNA hybridizations (dDDH) between strain BCU110501(T)and the type strains of other Frankia species were clearly below the cutoff point of 70%...
January 19, 2017: Archives of Microbiology
https://www.readbyqxmd.com/read/28097384/stress-response-physiology-of-thermophiles
#11
REVIEW
Preeti Ranawat, Seema Rawat
Thermo (or hyperthermo) philic microorganisms are ubiquitous having a wide range of habitats from freshly fallen snow to pasteurized milk to geothermal areas like hot springs. The variations in physicochemical conditions, viz., temperature, pH, nutrient availability and light intensity in the habitats always pose stress conditions for the inhabitants leading to slow growth or cell death. The industrial processes used for harvesting secondary metabolites such as enzymes, toxins and organic acids also create stressed environments for thermophiles...
January 17, 2017: Archives of Microbiology
https://www.readbyqxmd.com/read/28074233/microbial-diversity-in-different-compartments-of-an-aquaponics-system
#12
Zala Schmautz, Andreas Graber, Sebastian Jaenicke, Alexander Goesmann, Ranka Junge, Theo H M Smits
Aquaponics is a solution for sustainable production of fish and plants in a single semi-closed system, where nutrient-rich water from the aquaculture provides nutrients for plant growth. We examined the microbial communities within an experimental aquaponics system. Whereas the fish feces contained a separate community dominated by bacteria of the genus Cetobacterium, the samples from plant roots, biofilter, and periphyton were more similar to each other, while the communities were more diverse. Detailed examination of the data gave the first indications to functional groups of organisms in the different compartments of the aquaponic system...
January 10, 2017: Archives of Microbiology
https://www.readbyqxmd.com/read/28070613/the-plant-growth-promoting-effect-of-the-nitrogen-fixing-endophyte-pseudomonas-stutzeri-a15
#13
Van T K Pham, Hans Rediers, Maarten G K Ghequire, Hiep H Nguyen, René De Mot, Jos Vanderleyden, Stijn Spaepen
The use of plant growth-promoting rhizobacteria as a sustainable alternative for chemical nitrogen fertilizers has been explored for many economically important crops. For one such strain isolated from rice rhizosphere and endosphere, nitrogen-fixing Pseudomonas stutzeri A15, unequivocal evidence of the plant growth-promoting effect and the potential contribution of biological nitrogen fixation (BNF) is still lacking. In this study, we investigated the effect of P. stutzeri A15 inoculation on the growth of rice seedlings in greenhouse conditions...
January 9, 2017: Archives of Microbiology
https://www.readbyqxmd.com/read/28058488/inhibition-of-staphylococcus-aureus-in-vitro-by-bacteriocinogenic-lactococcus-lactis-kth0-1s-isolated-from-thai-fermented-shrimp-kung-som-and-safety-evaluation
#14
Sutanate Saelao, Suppasil Maneerat, Sireewan Kaewsuwan, Hanitra Rabesona, Yvan Choiset, Thomas Haertlé, Jean-Marc Chobert
Lactococcus lactis KTH0-1S isolated from Thai traditional fermented shrimp (Kung-som) is able to produce heat-stable bacteriocin and inhibits food spoilage bacteria and food-borne pathogens. The inhibitory effect of bacteriocin remained intact after treatment with different pHs and after heating, but was sensitive to some proteolytic enzymes. Addition of bacteriocin KTH0-1S to Staphylococcus aureus cultures decreased viable cell counts by 2.8 log CFU/ml, demonstrating a bactericidal mode of action. Furthermore, the growth of S...
January 5, 2017: Archives of Microbiology
https://www.readbyqxmd.com/read/28032191/chitin-degradation-and-utilization-by-virulent-aeromonas-hydrophila-strain-ml10-51k
#15
Dunhua Zhang, De-Hai Xu, Junqiang Qiu, Cody R Rasmussen-Ivey, Mark R Liles, Benjamin H Beck
Virulent Aeromonas hydrophila (vAh) is one of the most important bacterial pathogens that causes persistent outbreaks of motile Aeromonas septicemia in warm-water fishes. The survivability of this pathogen in aquatic environments is of great concern. The aim of this study was to determine the capability of the vAh strain ML10-51K to degrade and utilize chitin. Genome-wide analysis revealed that ML10-51K encodes a suite of proteins for chitin metabolism. Assays in vitro showed that four chitinases, one chitobiase and one chitin-binding protein were secreted extracellularly and participated in chitin degradation...
December 28, 2016: Archives of Microbiology
https://www.readbyqxmd.com/read/28032190/litorivivens-aequoris-sp-nov-a-gammaproteobacterium-isolated-from-seawater
#16
Sangeun Jun, Jaewoo Yoon
A Gram-stain-negative, strictly aerobic, beige-pigmented, motile, chemoheterotrophic, rod-shaped or ovoid bacterium, designated strain KMU-37(T), was isolated from seawater at Najeong Beach in the Republic of Korea. Phylogenetic analysis based on the 16S rRNA gene sequence revealed that the novel isolate was affiliated with the genus Litorivivens, class Gammaproteobacteria, showing highest sequence similarity (97.4%) to Litorivivens lipolytica HJTF-7(T). The DNA-DNA relatedness values between strains KMU-37(T) and L...
December 28, 2016: Archives of Microbiology
https://www.readbyqxmd.com/read/28028566/lacinutrix-chionocetis-sp-nov-isolated-from-gut-of-a-red-snow-crab
#17
Hyangmi Kim, Sang-Chul Yoon, Kwang-Ho Choi, Sung-Tae Kim, Jae-Bong Lee, Dong-Sun Kim, Ho Le Han, Kyung Sook Bae, Doo-Sang Park
A Gram-negative, aerobic, non-motile, rod-shaped bacterial strain, designated MAB-07(T), was isolated from the gut of a red snow crab. The novel strain grew optimally at 20 °C, pH 7.0-8.0, and in the presence of 3% (w/v) NaCl. A phylogenetic analysis based on the 16S rRNA gene sequence indicated that the strain MAB-07(T) belongs to the type strains of species of the genus Lacinutrix. Strain MAB-07(T) exhibited 16S rRNA gene sequence similarity values of 95.5-97.8% with the type strains of species of the genus Lacinutrix...
December 27, 2016: Archives of Microbiology
https://www.readbyqxmd.com/read/27995281/the-use-of-stable-and-unstable-green-fluorescent-proteins-for-studies-in-two-bacterial-models-agrobacterium-tumefaciens-and-xanthomonas-campestris-pv-campestris
#18
Pilar Sabuquillo, Adela Gea, Isabel M Matas, Cayo Ramos, Jaime Cubero
Fluorescent proteins have been used to track plant pathogens to understand their host interactions. To be useful, the transgenic pathogens must present similar behaviour than the wild-type isolates. Herein, a GFP marker was used to transform two plant pathogenic bacteria, Agrobacterium and Xanthomonas, to localize and track the bacteria during infection. The transgenic bacteria were evaluated to determine whether they showed the same fitness than the wild-type strains or whether the expression of the GFP protein interfered in the bacterial activity...
December 19, 2016: Archives of Microbiology
https://www.readbyqxmd.com/read/27990555/root-associated-bacterial-diversities-of-oryza-rufipogon-and-oryza-sativa-and-their-influencing-environmental-factors
#19
Lei Tian, Xue Zhou, Lina Ma, Shangqi Xu, Fahad Nasir, Chunjie Tian
Oryza rufipogon is the ancestor of human-cultivated Oryza sativa. However, little is known about the difference between the root-associated microorganisms of O. rufipogon and O. sativa. In this study, the root-associated bacteria of O. rufipogon, Leersia hexandra, and O. sativa from different latitudes in China were studied by DGGE analysis. Their bacterial community structures were compared by principal component analysis. The relationship between root-associated bacteria and soil properties was explored by canonical correspondence analysis...
December 18, 2016: Archives of Microbiology
https://www.readbyqxmd.com/read/27942773/vegetation-type-and-layer-depth-influence-nitrite-dependent-methane-oxidizing-bacteria-in-constructed-wetland
#20
Mengxi Yang, Qingwei Guo, Tianli Tong, Ningning Li, Shuguang Xie, Yan Long
Nitrite-dependent anaerobic methane oxidation (n-damo) process might be an important methane sink in wetland system. However, information on n-damo microorganisms in constructed wetland (CW) system for water treatment is still lacking. The present study investigated the n-damo communities in five full-scale vertical-flow CW systems with different plants. N-damo bacterial abundance did not show a considerable shift in CW planted with Cyperus papyrus, but varied greatly in other CW systems. However, the evident vertical change of n-damo community diversity occurred in each CW system...
December 10, 2016: Archives of Microbiology
journal
journal
24500
1
2
Fetch more papers »
Fetching more papers... Fetching...
Read by QxMD. Sign in or create an account to discover new knowledge that matter to you.
Remove bar
Read by QxMD icon Read
×

Search Tips

Use Boolean operators: AND/OR

diabetic AND foot
diabetes OR diabetic

Exclude a word using the 'minus' sign

Virchow -triad

Use Parentheses

water AND (cup OR glass)

Add an asterisk (*) at end of a word to include word stems

Neuro* will search for Neurology, Neuroscientist, Neurological, and so on

Use quotes to search for an exact phrase

"primary prevention of cancer"
(heart or cardiac or cardio*) AND arrest -"American Heart Association"