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https://www.readbyqxmd.com/read/27920781/inoculation-of-schizolobium-parahyba-with-mycorrhizal-fungi-and-plant-growth-promoting-rhizobacteria-increases-wood-yield-under-field-conditions
#1
Martha V T Cely, Marco A Siviero, Janaina Emiliano, Flávia R Spago, Vanessa F Freitas, André R Barazetti, Erika T Goya, Gustavo de Souza Lamberti, Igor M O Dos Santos, Admilton G De Oliveira, Galdino Andrade
Schizolobium parahyba var. amazonicum (Huber ex Ducke) occurs naturally in the Brazilian Amazon. Currently, it is being planted extensively because of its fast growth and excellent use in forestry. Consequently, there is great interest in new strategies to increase wood production. The interaction between soil microorganisms and plants, specifically in the roots, provides essential nutrients for plant growth. These interactions can have growth-promoting effects. In this way, this study assessed the effect of the inoculation with arbuscular mycorrhizal fungi (AMF) and plant growth-promoting rhizobacteria (PGPR) on growth of S...
2016: Frontiers in Plant Science
https://www.readbyqxmd.com/read/27916878/burkholderia-contaminans-colonization-from-contaminated-liquid-docusate-colace-in-a-immunocompetent-adult-with-legionnaire-s-disease-infection-control-implications-and-the-potential-role-of-candida-pellucosa
#2
Burke A Cunha, John Gian, Bertamaria Dieguez, Elsa Santos-Cruz, Daniela Matassa, Steve Gerson, Pat Daniels, Carlos Rosales, Rodger P Silletti
Objective:B. contaminans was cultured from respiratory secretions and liquid docusate (Colace) in a Neurosurgical Intensive Care Unit (NICU) patient with community-acquired Legionnaire's disease but not from another bottle given to the patient. Unexpectedly, C. pelliculosa was cultured from two bottles, but not the B. contaminans bottle or respiratory secretions. Methods:B. cepacia, later identified as B. contaminans, was cultured from a bottle of liquid docusate (Colace) dispensed to a non-cystic fibrosis patient...
November 30, 2016: Journal of Clinical Medicine
https://www.readbyqxmd.com/read/27914949/anion-inhibition-profiles-of-the-%C3%AE-carbonic-anhydrase-from-the-pathogenic-bacterium-burkholderia-pseudomallei-responsible-of-melioidosis-and-highly-drug-resistant-to-common-antibiotics
#3
Sonia Del Prete, Daniela Vullo, Pietro Di Fonzo, Sameh M Osman, Zeid AlOthman, Claudiu T Supuran, Clemente Capasso
Burkholderia pseudomallei is a Gram-negative saprophytic bacterium responsible of melioidosis, an endemic disease of tropical and sub-tropical regions of the world. A recombinant γ-CA (BpsγCA) identified in the genome of this bacterium was cloned and purified. Its catalytic activity and anion inhibition profiles were investigated. The enzyme was an efficient catalyst for the CO2 hydration showing a kcat of 5.3×10(5)s(-1) and kcat/Km of 2.5×10(7)M(-1)×s(-1). The best BpsγCA inhibitors were sulfamide, sulfamic acid, phenylboronic acid and phenylarsonic acid, which showed KI in the range of 49-83μM (these inhibitors showed millimolar inhibition constant against hCA II), followed by diethyldithiocarbamate, selenate, tellurate, perrhenate, selenocyanate, trithiocarbonate, tetraborato, pyrophosphate, stannate, carbonate, bicarbonate, azide, cyanide, thiocyanate and cyanate with KIs in the range of 0...
November 14, 2016: Bioorganic & Medicinal Chemistry
https://www.readbyqxmd.com/read/27909431/the-microbiota-of-recreational-freshwaters-and-the-implications-for-environmental-and-public-health
#4
Chang Soo Lee, Minseok Kim, Cheonghoon Lee, Zhongtang Yu, Jiyoung Lee
The microbial communities in recreational freshwaters play important roles in both environmental and public health perspectives. In this study, the bacterial community structure and its associations with freshwater environments were investigated by analyzing the summertime microbiomes of three beach waters in Ohio (East Fork, Delaware, and Madison lakes) together with environmental and microbial water quality parameters. From the swimming season of 2009, 21 water samples were collected from the three freshwater beaches...
2016: Frontiers in Microbiology
https://www.readbyqxmd.com/read/27908988/complete-genome-sequence-of-a-burkholderia-mallei-isolate-originating-from-a-glanderous-horse-from-the-kingdom-of-bahrain
#5
Mandy C Elschner, Prasad Thomas, Falk Melzer
Burkholderia mallei is a zoonotic agent causing glanders, a notifiable disease in equines. During the past decades glanders emerged, and the Kingdom of Bahrain reported outbreaks to the World Organization of Animal Health in 2010 and 2011. This paper presents the complete genome sequence of the Burkholderia mallei strain 11RR2811 Bahrain1.
December 1, 2016: Genome Announcements
https://www.readbyqxmd.com/read/27905507/discovery-of-piperonal-converting-oxidase-involved-in-the-metabolism-of-a-botanical-aromatic-aldehyde
#6
Shiori Doi, Yoshiteru Hashimoto, Chiaki Tomita, Takuto Kumano, Michihiko Kobayashi
Piperonal-catabolizing microorganisms were isolated from soil, the one (strain CT39-3) exhibiting the highest activity being identified as Burkholderia sp. The piperonal-converting enzyme involved in the initial step of piperonal metabolism was purified from strain CT39-3. Gene cloning of the enzyme and a homology search revealed that the enzyme belongs to the xanthine oxidase family, which comprises molybdoenzymes containing a molybdopterin cytosine dinucleotide cofactor. We found that the piperonal-converting enzyme acts on piperonal in the presence of O2, leading to formation of piperonylic acid and H2O2...
December 1, 2016: Scientific Reports
https://www.readbyqxmd.com/read/27904465/simultaneous-detection-of-three-bacterial-seed-borne-diseases-in-rice-using-multiplex-polymerase-chain-reaction
#7
In Jeong Kang, Mi-Hyung Kang, Tae-Hwan Noh, Hyeong Kwon Shim, Dong Bum Shin, Suggi Heu
Burkholderia glumae (bacterial grain rot), Xanthomonas oryzae pv. oryzae (bacterial leaf blight), and Acidovorax avenae subsp. avenae (bacterial brown stripe) are major seedborne pathogens of rice. Based on the 16S and 23S rDNA sequences for A. avenae subsp. avenae and B. glumae, and transposase A gene sequence for X. oryzae pv. oryzae, three sets of primers had been designed to produce 402 bp for B. glumae, 490 bp for X. oryzae, and 290 bp for A. avenae subsp. avenae with the 63°C as an optimum annealing temperature...
December 2016: Plant Pathology Journal
https://www.readbyqxmd.com/read/27902866/bacterial-community-collapse-a-meta-analysis-of-the-sinonasal-microbiota-in-chronic-rhinosinusitis
#8
Brett Wagner Mackenzie, David W Waite, Michael Hoggard, Richard G Douglas, Michael W Taylor, Kristi Biswas
Chronic rhinosinusitis (CRS) is a common, debilitating condition characterized by long-term inflammation of the nasal cavity and paranasal sinuses. The role of the sinonasal bacteria in CRS is unclear. We conducted a meta-analysis combining and reanalyzing published bacterial 16S rRNA sequence data to explore differences in sinonasal bacterial community composition and predicted function between healthy and CRS affected subjects. The results identify the most abundant bacteria across all subjects as Staphylococcus, Propionibacterium, Corynebacterium, Streptococcus, and an unclassified lineage of Actinobacteria...
November 30, 2016: Environmental Microbiology
https://www.readbyqxmd.com/read/27902255/paraburkholderia-piptadeniae-sp-nov-and-paraburkholderia-ribeironis-sp-nov-two-root-nodulating-symbiotic-species-of-piptadenia-gonoacantha-in-brazil
#9
Caroline Bournaud, Lionel Moulin, Margo Cnockaert, Sergio Miana de Faria, Yves Prin, Dany Severac, Peter Vandamme
During a survey of root-nodulating symbionts of Mimosoid species in South-east region of Brazil, eight Paraburkholderia isolates were obtained from nodules of the legume species Piptadenia gonoacantha, either from the field or following a soil trapping method with the same plant host. 16S rRNA as well as recA and gyrB phylogenetic markers placed these strains in two new clades within the genus Burkholderia sensu lato. DNA-DNA hybridization values and analyses of the whole genome sequence of selected strains in each clade showed that the two clades represented novel Paraburkholderia species...
November 9, 2016: International Journal of Systematic and Evolutionary Microbiology
https://www.readbyqxmd.com/read/27902193/formosimonas-limnophila-gen-nov-sp-nov-a-new-member-of-the-family-burkholderiaceae-isolated-from-a-freshwater-lake
#10
Wen-Ming Chen, Pei-Bei Xie, Chiu-Chung Young, Shih-Yi Sheu
Strain AHQ-12T, isolated from a freshwater lake in Taiwan, was characterized using a polyphasic taxonomy approach. Cells of strain AHQ-12T were Gram-staining-negative, aerobic, non-motile, non-spore forming, straight rods and forming translucent white-colored colonies. Optimal growth occurred at 20 °C, pH 6.0 and 0 % NaCl. The predominant fatty acids were summed feature 3 (comprising C16:17c and/or C16:16c) and C16:0. The major isoprenoid quinone was Q-8 and the DNA G+C content was 50.4 mol%. The major polar lipids were phosphatidylethanolamine, phosphatidylglycerol, diphosphatidylglycerol and several uncharacterized aminophospholipids and lipids...
October 11, 2016: International Journal of Systematic and Evolutionary Microbiology
https://www.readbyqxmd.com/read/27900689/novel-tools-for-the-functional-expression-of-metagenomic-dna
#11
Nadine Katzke, Andreas Knapp, Anita Loeschcke, Thomas Drepper, Karl-Erich Jaeger
Functional expression of genes from metagenomic libraries is limited by various factors including inefficient transcription and/or translation of target genes as well as improper folding and assembly of the corresponding proteins caused by the lack of appropriate chaperones and cofactors. It is now well accepted that the use of different expression hosts of distinct phylogeny and physiology can dramatically increase the rate of success. In the following chapter, we therefore describe tools and protocols allowing for the comparative heterologous expression of genes in five bacterial expression hosts, namely Escherichia coli, Pseudomonas putida, Bacillus subtilis, Burkholderia glumae, and Rhodobacter capsulatus...
2017: Methods in Molecular Biology
https://www.readbyqxmd.com/read/27899917/insights-into-the-regulation-of-rhizosphere-bacterial-communities-by-application-of-bio-organic-fertilizer-in-pseudostellaria-heterophylla-monoculture-regime
#12
Linkun Wu, Jun Chen, Hongmiao Wu, Xianjin Qin, Juanying Wang, Yanhong Wu, Muhammad U Khan, Sheng Lin, Zhigang Xiao, Xiaomian Luo, Zhongyi Zhang, Wenxiong Lin
The biomass and quality of Pseudostellariae heterophylla suffers a significant decline under monoculture. Since rhizosphere miobiome plays crucial roles in soil health, deep pyrosequencing combined with qPCR was applied to characterize the composition and structure of soil bacterial community under monoculture and different amendments. The results showed compared with the 1st-year planted (FP), 2nd-year monoculture of P. heterophylla (SP) led to a significant decline in yield and resulted in a significant increase in Fusarium oxysporum but a decline in Burkholderia spp...
2016: Frontiers in Microbiology
https://www.readbyqxmd.com/read/27898739/environmental-free-living-amoebae-isolated-from-soil-in-khon-kaen-thailand-antagonize-burkholderia-pseudomallei
#13
Parumon Noinarin, Pisit Chareonsudjai, Pinich Wangsomnuk, Surasak Wongratanacheewin, Sorujsiri Chareonsudjai
Presence of Burkholderia pseudomallei in soil and water is correlated with endemicity of melioidosis in Southeast Asia and northern Australia. Several biological and physico-chemical factors have been shown to influence persistence of B. pseudomallei in the environment of endemic areas. This study was the first to evaluate the interaction of B. pseudomallei with soil amoebae isolated from B. pseudomallei-positive soil site in Khon Kaen, Thailand. Four species of amoebae, Paravahlkampfia ustiana, Acanthamoeba sp...
2016: PloS One
https://www.readbyqxmd.com/read/27898711/biochemical-characterization-of-glutamate-racemase-a-new-candidate-drug-target-against-burkholderia-cenocepacia-infections
#14
Aygun Israyilova, Silvia Buroni, Federico Forneris, Viola Camilla Scoffone, Namiq Q Shixaliyev, Giovanna Riccardi, Laurent Roberto Chiarelli
The greatest obstacle for the treatment of cystic fibrosis patients infected with the Burkholderia species is their intrinsic antibiotic resistance. For this reason, there is a need to develop new effective compounds. Glutamate racemase, an essential enzyme for the biosynthesis of the bacterial cell wall, is an excellent candidate target for the design of new antibacterial drugs. To this aim, we recombinantly produced and characterized glutamate racemase from Burkholderia cenocepacia J2315. From the screening of an in-house library of compounds, two Zn (II) and Mn (III) 1,3,5-triazapentadienate complexes were found to efficiently inhibit the glutamate racemase activity with IC50 values of 35...
2016: PloS One
https://www.readbyqxmd.com/read/27895902/effect-of-%C3%AE-lactamase-inhibitors-on-in-vitro-activity-of-%C3%AE-lactam-antibiotics-against-burkholderia-cepacia-complex-species
#15
Annelien Everaert, Tom Coenye
BACKGROUND: Bacteria belonging to the Burkholderia cepacia complex (Bcc) are an important cause of chronic respiratory tract infections in cystic fibrosis patients. Intrinsic resistance to a wide range of antimicrobial agents, including a variety of β-lactam antibiotics, is frequently observed in Bcc strains. Resistance to β-lactams is most commonly mediated by efflux pumps, alterations in penicillin-binding proteins or the expression of β-lactamases. β-lactamase inhibitors are able to restore the in vitro activity of β-lactam molecules against a variety of Gram-negative species, but the effect of these inhibitors on the activity of β-lactam treatment against Bcc species is still poorly investigated...
2016: Antimicrobial Resistance and Infection Control
https://www.readbyqxmd.com/read/27894256/burkholderia-pseudomallei-derived-mir-3473-enhances-nf-%C3%AE%C2%BAb-via-targeting-traf3-and-is-associated-with-different-inflammatory-responses-compared-to-burkholderia-thailandensis-in-murine-macrophages
#16
Yao Fang, Hai Chen, Yi Hu, Qian Li, Zhiqiang Hu, Tengfei Ma, Xuhu Mao
BACKGROUND: Burkholderia pseudomallei (Bp) is the causative agent of melioidosis, a kind of tropical disease. Burkholderia thailandensis (Bt), with a high sequence similarity to Bp, is thought to be an avirulent organism. Since there are numerous similarities between Bp and Bt, their differences in pathogenesis of host response and related mechanism are still undermined. In recent years, microRNAs have been researched in many diseases, but seldom involved in bacterial infection, bacteria-host interaction or explaining the differences between virulent and avirulent species...
November 28, 2016: BMC Microbiology
https://www.readbyqxmd.com/read/27891340/dual-lower-respiratory-tract-infection-by-burkholderia-cepacia-and-acinetobacter-baumannii-in-a-neonate-a-case-report
#17
Neeta Gade, Sanjay Singh Negi, Atul Jindal, Ujjwala Gaikwad, Padma Das, Anudita Bhargava
Burkholderia cepacia (B.cepacia) and Acinetobacter baumannii (A.baumannii), the highly intrinsically resistant nonfermenters are known to cause frequent infections in immunocomproimsed or hospitalized patients with significant mortality rate. In this rare clinical presentation, both were simultaneously isolated from a case of neonatal sepsis with respiratory failure. The prompt early diagnosis and antibiogram of these nonfermenters were proved to be of tremendous help in the present case with successful treatment outcome of dual infection of B...
October 2016: Journal of Clinical and Diagnostic Research: JCDR
https://www.readbyqxmd.com/read/27889717/clinical-profile-and-antimicrobial-susceptibility-pattern-of-neonatal-sepsis-due-to-burkholderia-capacia-complex
#18
Aparna Chandrasekaran, Nivedhana Subburaju, Muzamil Mustafa, Sulochana Putlibai
We report the clinical profile of 59 neonates who presented to a tertiary care extramural neonatal unit with Burkholderia cepacia complex infection. Among the 3265 admissions over 45 months, incidence of Burkholderia sepsis was 18 per 1000 admissions. Case fatality rate was 17%. Most (95%) isolates were sensitive to cotrimoxazole.
November 5, 2016: Indian Pediatrics
https://www.readbyqxmd.com/read/27886433/the-burkholderia-cenocepacia-peptidoglycan-associated-lipoprotein-is-involved-in-epithelial-cell-attachment-and-elicitation-of-inflammation
#19
Ruth Dennehy, Maria Romano, Alessia Ruggiero, Yasmine F Mohamed, Simon L Dignam, Cristóbal Mujica Troncoso, Máire Callaghan, Miguel A Valvano, Rita Berisio, Siobhán McClean
The Burkholderia cepacia complex (Bcc) is a group of Gram-negative opportunistic pathogens causing infections in people with cystic fibrosis (CF). Bcc is highly antibiotic resistant, making conventional antibiotic treatment problematic. The identification of novel targets for anti-virulence therapies should improve therapeutic options for infected CF patients. We previously identified that the peptidoglycan-associated lipoprotein (Pal) was immunogenic in Bcc infected CF patients; however, its role in Bcc pathogenesis is unknown...
November 7, 2016: Cellular Microbiology
https://www.readbyqxmd.com/read/27881231/burkholderia-pseudomallei-%C3%AE-carbonic-anhydrase-is-strongly-activated-by-amino-acids-and-amines
#20
Daniela Vullo, Sonia Del Prete, Sameh M Osman, Zeid AlOthman, Clemente Capasso, William A Donald, Claudiu T Supuran
Activation of the γ-class carbonic anhydrase (CAs, EC 4.2.1.1) from the pathogenic bacterium Burkholderia pseudomallei (BpsγCA) with a series of natural and non-natural amino acids and aromatic/heterocyclic amines has been investigated. The best BpsγCA activators were d-His, l-DOPA, d-Trp, 4-amino-l-Phe, dopamine, 2-(2-aminoethyl)pyridine, 2-aminoethyl-piparazine/morpholine and l-adrenaline, which showed activation constants ranging between 9 and 86nM. The least effective activators were l-His, l-Phe and 2-pyridyl-methylamine, with KAs in the range of 1...
November 12, 2016: Bioorganic & Medicinal Chemistry Letters
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