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Journal articles on the topic 'Pseudomonas'

Author: Grafiati

Published: 4 June 2021

Last updated: 25 July 2025

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1

Godfrey, S. A. C., S. A. Harrow, J. W. Marshall, and J. D. Klena. "Characterization by 16S rRNA Sequence Analysis of Pseudomonads Causing Blotch Disease of Cultivated Agaricus bisporus." Applied and Environmental Microbiology 67, no. 9 (2001): 4316–23. http://dx.doi.org/10.1128/aem.67.9.4316-4323.2001.

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ABSTRACT Bacterial blotch of Agaricus bisporus has typically been identified as being caused by either Pseudomonas tolaasii (brown blotch) or Pseudomonas gingeri(ginger blotch). To address the relatedness of pseudomonads able to induce blotch, a pilot study was initiated in which pseudomonads were selectively isolated from mushroom farms throughout New Zealand. Thirty-three pseudomonad isolates were identified as being capable of causing different degrees of discoloration (separable into nine categories) of A. bisporus tissue in a bioassay. These isolates were also identified as unique using r

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2

Freitas, J. Renato de, and James J. Germida. "Pseudomonas cepacia and Pseudomonas putida as winter wheat inoculants for biocontrol of Rhizoctonia solani." Canadian Journal of Microbiology 37, no. 10 (1991): 780–84. http://dx.doi.org/10.1139/m91-134.

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Pseudomonas cepacia R55 and R85 and Pseudomonas putida R104, antagonistic towards plant pathogenic fungi in vitro, were assessed as seed inoculants for winter wheat (cv. Norstar) grown in a growth chamber in soil infested with Fusarium solani or Rhizoctonia solani isolate AG-1, AG 2-1, or AG-3. Infestation of soil with R. solani AG-1 or AG 2-1 reduced root dry weight of uninoculated plants by 62 and 78%, respectively, whereas R. solani AG-3 or F. solani had no effect on plant biomass. Pseudomonad inoculants increased (relative to plants subjected to disease) the winter wheat root dry weight by

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3

FARRAG, SEHAM A., and ELMER H. MARTH. "Behavior of Listeria monocytogenes when Incubated Together with Pseudomonas Species in Tryptose Broth at 7 and 13°C." Journal of Food Protection 52, no. 8 (1989): 536–39. http://dx.doi.org/10.4315/0362-028x-52.8.536.

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Tryptose broth (TB) was inoculated with Listeria monocytogenes (strain Scott A or California), Pseudomonas aeruginosa, Pseudomonas flourescens, or a combination of L. monocytogenes plus Pseudomonas species, and incubated at 7 or 13°C for 8 weeks. McBride Listeria Agar was used to determine numbers of L. monocytogenes and Pseudomonas Isolation Agar to enumerate Pseudomonas species at 0, 7, 14, 28, 42, or 56 d. At 13°C, presence of P. fluorescens had a slight negative effect on growth of L. monocytogenes strain Scott A, and was somewhat detrimental to its survival during the extended incubation.

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4

Katsuwon, J., R. Zdor, and A. J. Anderson. "Superoxide dismutase activity in root-colonizing pseudomonads." Canadian Journal of Microbiology 39, no. 4 (1993): 420–29. http://dx.doi.org/10.1139/m93-061.

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Several saprophytic fluorescent pseudomonads that are aggressive root colonizers express similar specific activities of superoxide dismutase during growth in liquid culture. The pseudomonads have the potential to produce hydrogen peroxide sensitive and hydrogen peroxide insensitive isoforms of superoxide dismutase with distinct mobilities in nondenaturing polyacrylamide gel electrophoresis. Synthesis of the hydrogen peroxide insensitive form is enhanced by limited iron availability, by exposure to Mn2+, and to a lesser extent by external sources of superoxide anion. Unlike Pseudomonas aerugino

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5

McSpadden Gardener, Brian B. "Diversity and Ecology of Biocontrol Pseudomonas spp. in Agricultural Systems." Phytopathology® 97, no. 2 (2007): 221–26. http://dx.doi.org/10.1094/phyto-97-2-0221.

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Diverse Pseudomonas spp. may act as biological controls of plant pathogens, but the ecology of those natural populations is not well understood. And, while biocontrol potential has been identified in multiple pseudomonad strains, the linkages between genotype and phenotype have yet to be fully delineated. However, intensive studies of one class of biocontrol strains, i.e., those that can produce 2,4-diacetylphloroglucionl (DAPG), have provided new insights into the diversity, distribution, and interactions of biocontrol pseudomonads. Those studies also laid the foundation for future research a

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6

Rahman, Mizanur, Mohammad Jobayer, Nadira Akter, Farook Ahamed, SM Shamsuzzaman, and Kazi Zulfiquer Mamun. "Rapid detection of Pseudomonad at species level by multiplex PCR in surgical units and ICU of Dhaka Medical College Hospital." Bangladesh Journal of Medical Microbiology 10, no. 2 (2016): 22–26. http://dx.doi.org/10.3329/bjmm.v10i2.51928.

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Pseudomonads are the most important gram negative organisms involved in various types of infection. This cross sectional study was conducted from January to December 2010 to isolate and identify Pseudomonad at species level in different clinical samples by culture and multiplex polymerase chain reaction (PCR) and to evaluate the efficacy of PCR in rapid detection of the bacteria at species level. Wound swab and tips of endotracheal tube were collected from hospitalized patients from different surgical units and intensive care unit (ICU) of Dhaka Medical College Hospital, Dhaka. Pseudomonads we

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7

Campbell, James N., Kenneth Conn, Linnea Sorlie, and Fred D. Cook. "Inhibition of growth in canola seedlings caused by an opportunistic Pseudomonas sp. Under laboratory and field conditions." Canadian Journal of Microbiology 32, no. 3 (1986): 201–7. http://dx.doi.org/10.1139/m86-041.

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If Pseudomonas rp2, a field-isolated fluorescent pseudomonad, is present on canola (rape) seeds at the time of sprouting, it causes an inhibition of root growth leading to death or delayed maturation of the plant. Inhibitory strains of this type comprise less than 10% of the fluorescent pseudomonads isolated from local field samples, but they were found in widely dispersed sources. By present standards, these Pseudomonas strains would be considered soil saprophytes, since they survive in sterile soil at 4 and −20 °C in the absence of plant material, and since they do not match taxonomically wi

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8

Beaulieu, C., S. Gill, L. Miville, and P. Dion. "Genetic regions of Pseudomonas aureofaciens strain 211 involved in nopaline catabolism." Canadian Journal of Microbiology 34, no. 7 (1988): 843–49. http://dx.doi.org/10.1139/m88-145.

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A DNA fragment from the nopaline catabolism region of the Ti plasmid of Agrobacterium tumefaciens showed no detectable homology to the total DNA of several nopaline-utilizing strains of Pseudomonas spp. From one of these pseudomonads, Pseudomonas aureofaciens strain 211, mutants defective in the catabolism of nopaline but not arginine, have been obtained by mutagenesis with transposon Tn5, and also with TnV using a new suicide plasmid vector. The DNA fragment bearing the TnV insertion has been cloned and found to hybridize with DNA of every pseudomonad tested, independently of the capacity to

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9

Meyer, Jean-Marie, Valérie A. Geoffroy, Nader Baida, et al. "Siderophore Typing, a Powerful Tool for the Identification of Fluorescent and Nonfluorescent Pseudomonads." Applied and Environmental Microbiology 68, no. 6 (2002): 2745–53. http://dx.doi.org/10.1128/aem.68.6.2745-2753.2002.

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ABSTRACT A total of 301 strains of fluorescent pseudomonads previously characterized by conventional phenotypic and/or genomic taxonomic methods were analyzed through siderotyping, i.e., by the isoelectrophoretic characterization of their main siderophores and pyoverdines and determination of the pyoverdine-mediated iron uptake specificity of the strains. As a general rule, strains within a well-circumscribed taxonomic group, namely the species Pseudomonas brassicacearum, Pseudomonas fuscovaginae, Pseudomonas jessenii, Pseudomonas mandelii, Pseudomonas monteilii, “Pseudomonas mosselii,” “Pseud

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10

Tryfinopoulou, P., E. Tsakalidou, and G. J. E. Nychas. "Characterization of Pseudomonas spp. Associated with Spoilage of Gilt-Head Sea Bream Stored under Various Conditions." Applied and Environmental Microbiology 68, no. 1 (2002): 65–72. http://dx.doi.org/10.1128/aem.68.1.65-72.2002.

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ABSTRACT The population dynamics of pseudomonads in gilt-head sea bream Mediterranean fish (Sparus aurata) stored under different conditions were studied. Phenotypic analysis and sodium dodecyl sulfate-polyacrylamide gel electrophoresis of whole-cell proteins were performed to identify a total of 106 Pseudomonas strains isolated from S. aurata stored under different temperatures (at 0, 10, and 20°C) and packaging conditions (air and a modified atmosphere of 40% CO2-30% N2-30% O2). Pseudomonas lundensis was the predominant species, followed by Pseudomonas fluorescens, while Pseudomonas fragi an

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11

Mubassu, Polly, Abednego Musyoki, Erick Odoyo, Collins Kigen, and Lillian Musila. "Environmental reservoirs of multidrug-resistant pseudomonads in a geographical location in Kenya with high community-acquired infections." F1000Research 13 (May 13, 2024): 474. http://dx.doi.org/10.12688/f1000research.147914.1.

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Background Pseudomonads are gram negative bacteria and readily form biofilms in the environment, allowing long-term colonization and persistence in sinks, water systems. They pose a risk of life-threatening opportunistic infections in immune-compromised individuals. MDR strains, make treatment increasingly difficult. Environmentally persistent MDR strains are typically problematic within healthcare facilities, however, data on MDR pseudomonad reservoirs in settings with community-acquired infections to inform preventive interventions, in resource-constrained settings is scarce. Here, we determ

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Reddy, Gundlapalli S. N., Genki I. Matsumoto, Peter Schumann, Erko Stackebrandt, and Sisinthy Shivaji. "Psychrophilic pseudomonads from Antarctica: Pseudomonas antarctica sp. nov., Pseudomonas meridiana sp. nov. and Pseudomonas proteolytica sp. nov." International Journal of Systematic and Evolutionary Microbiology 54, no. 3 (2004): 713–19. http://dx.doi.org/10.1099/ijs.0.02827-0.

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Thirty-one bacteria that belonged to the genus Pseudomonas were isolated from cyanobacterial mat samples that were collected from various water bodies in Antarctica. All 31 isolates were psychrophilic; they could be divided into three groups, based on their protein profiles. Representative strains of each of the three groups, namely CMS 35T, CMS 38T and CMS 64T, were studied in detail. Based on 16S rRNA gene sequence analysis, it was established that the strains were related closely to the Pseudomonas fluorescens group. Phenotypic and chemotaxonomic characteristics further confirmed their affi

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13

Moënne-Loccoz, Yvan, Hans-Volker Tichy, Anne O'Donnell, Reinhard Simon, and Fergal O'Gara. "Impact of 2,4-Diacetylphloroglucinol-Producing Biocontrol StrainPseudomonas fluorescens F113 on Intraspecific Diversity of Resident Culturable Fluorescent Pseudomonads Associated with the Roots of Field-Grown Sugar Beet Seedlings." Applied and Environmental Microbiology 67, no. 8 (2001): 3418–25. http://dx.doi.org/10.1128/aem.67.8.3418-3425.2001.

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ABSTRACT The impact of the 2,4-diacetylphloroglucinol-producing biocontrol agent Pseudomonas fluorescens F113Rif on the diversity of the resident community of culturable fluorescent pseudomonads associated with the roots of field-grown sugar beet seedlings was evaluated. At 19 days after sowing, the seed inoculant F113Rif had replaced some of the resident culturable fluorescent pseudomonads at the rhizoplane but had no effect on the number of these bacteria in the rhizosphere. A total of 498 isolates of resident fluorescent pseudomonads were obtained and characterized by molecular means at the

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Snopková, Kateřina, Kristýna Dufková, and David Šmajs. "Pseudomonas prosekii isolated in Antarctica inhibits plantpathogenic strains of Pseudomonas viridiflava and Pseudomonas fluorescens." Czech Polar Reports 11, no. 2 (2022): 270–78. http://dx.doi.org/10.5817/cpr2021-2-18.

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Pseudomonas-caused plant diseases are present worldwide and affect most of the major lineages of higher plants which, as a consequence, may result in significant economic losses. Despite the use of bacteriocins produced by rhizosphere and soil bacteria has been nowadays considered as novel crop protection approach, antagonistic interactions of cold-adapted isolates toward agriculturally important phytopathogenic bacteria have not been studied yet. In this study, we tested inhibition activity of Antarctic Pseudomonas spp. against phytopathogenic pseudomonads. Four Antarctic stains (P. prosekii

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15

Parales, Rebecca E., Vasyl Nesteryuk, Jonathan G. Hughes, Rita A. Luu, and Jayna L. Ditty. "Cytosine chemoreceptor McpC in Pseudomonas putida F1 also detects nicotinic acid." Microbiology 160, no. 12 (2014): 2661–69. http://dx.doi.org/10.1099/mic.0.081968-0.

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Soil bacteria are generally capable of growth on a wide range of organic chemicals, and pseudomonads are particularly adept at utilizing aromatic compounds. Pseudomonads are motile bacteria that are capable of sensing a wide range of chemicals, using both energy taxis and chemotaxis. Whilst the identification of specific chemicals detected by the ≥26 chemoreceptors encoded in Pseudomonas genomes is ongoing, the functions of only a limited number of Pseudomonas chemoreceptors have been revealed to date. We report here that McpC, a methyl-accepting chemotaxis protein in Pseudomonas putida F1 tha

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Blanco-Romero, Esther, Daniel Garrido-Sanz, Rafael Rivilla, Miguel Redondo-Nieto, and Marta Martín. "In Silico Characterization and Phylogenetic Distribution of Extracellular Matrix Components in the Model Rhizobacteria Pseudomonas fluorescens F113 and Other Pseudomonads." Microorganisms 8, no. 11 (2020): 1740. http://dx.doi.org/10.3390/microorganisms8111740.

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Biofilms are complex structures that are crucial during host–bacteria interaction and colonization. Bacteria within biofilms are surrounded by an extracellular matrix (ECM) typically composed of proteins, polysaccharides, lipids, and DNA. Pseudomonads contain a variety of ECM components, some of which have been extensively characterized. However, neither the ECM composition of plant-associated pseudomonads nor their phylogenetic distribution within the genus has been so thoroughly studied. In this work, we use in silico methods to describe the ECM composition of Pseudomonas fluorescens F113, a

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17

Pyle, Barry H., and Gordon A. McFeters. "Population dynamics of pseudomonads after iodination." Canadian Journal of Microbiology 36, no. 11 (1990): 801–3. http://dx.doi.org/10.1139/m90-137.

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The population dynamics of pseudomonads grown under rich or low nutrient conditions were examined following iodination. Iodinated and untreated controls of Pseudomonas aeruginosa or Pseudomonas cepacia were resuspended in phosphate buffer and incubated at room temperature. Viable populations of iodine-treated cultures increased faster in phosphate-buffered water than uniodinated controls. Thus, bacteria in iodinated water systems may recover or multiply during storage and distribution after disinfection and may pose a significant health risk. Key words: iodine, disinfection, pseudomonads.

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18

Giles, Courtney D., Pei-Chun (Lisa) Hsu, Alan E. Richardson, Mark R. H. Hurst, and Jane E. Hill. "The role of gluconate production by Pseudomonas spp. in the mineralization and bioavailability of calcium–phytate to Nicotiana tabacum." Canadian Journal of Microbiology 61, no. 12 (2015): 885–97. http://dx.doi.org/10.1139/cjm-2015-0206.

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Organic phosphorus (P) is abundant in most soils but is largely unavailable to plants. Pseudomonas spp. can improve the availability of P to plants through the production of phytases and organic anions. Gluconate is a major component of Pseudomonas organic anion production and may therefore play an important role in the mineralization of insoluble organic P forms such as calcium–phytate (CaIHP). Organic anion and phytase production was characterized in 2 Pseudomonas spp. soil isolates (CCAR59, Ha200) and an isogenic mutant of strain Ha200, which lacked a functional glucose dehydrogenase (Gcd)

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Park, Yoon-Dong, Hana Yi, Keun Sik Baik, et al. "Pseudomonas segetis sp. nov., isolated from soil." International Journal of Systematic and Evolutionary Microbiology 56, no. 11 (2006): 2593–95. http://dx.doi.org/10.1099/ijs.0.63792-0.

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A Gram-negative, aerobic bacterium, designated strain FR1439T, was isolated from the soil of Dokdo in the Republic of Korea. The cells of strain FR1439T were catalase- and oxidase-positive, motile and rod-shaped. Phylogenetic analysis of the 16S rRNA gene sequence revealed that it represents a distinct line of descent within the genus Pseudomonas. The levels of DNA–DNA relatedness between strain FR1439T and type strains of phylogenetically related species, namely Pseudomonas flavescens, Pseudomonas mendocina, Pseudomonas pseudoalcaligenes and Pseudomonas straminea, ranged from 28 to 37 %. Seve

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Gionfriddo, J. R., R. Rosenbusch, J. M. Kinyon, D. M. Betts, and T. M. Smith. "Bacterial and mycoplasmal flora of the healthy camelid conjunctival sac." American Journal of Veterinary Research 52, no. 7 (1991): 1061–64. http://dx.doi.org/10.2460/ajvr.1991.52.07.1061.

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Summary Healthy conjunctival sacs of 88 animals of 3 species of captive camelids (Lamaglama, Lama guanicoe, Lama pacos) and llama-guanaco hybrids were sampled for bacterial and mycoplasmal flora. Mycoplasmas were not isolated from any animal. Eleven genera of bacteria were isolated. The most frequent isolates were Staphyloccus epidermidis and Pseudomonas spp. Nine varieties of Pseudomonas were found, which represented at least 3 Pseudomonas species. Many of the bacterial isolates (especially the pseudomonads) are potential pathogens in the eyes of these camelids.

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CAMPO, J. DEL, F. CARLIN, and C. NGUYEN-THE. "Effects of Epiphytic Enterobacteriaceae and Pseudomonads on the Growth of Listeria monocytogenes in Model Media." Journal of Food Protection 64, no. 5 (2001): 721–24. http://dx.doi.org/10.4315/0362-028x-64.5.721.

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Four Enterobacteriaceae (Enterobacter agglomerans and Rhanella aquatilis) and six pseudomonads (Pseudomonas fluorescens, Pseudomonas chlororaphis, Pseudomonas putida) isolated from minimally processed green endive were coinoculated at 10°C with Listeria monocytogenes in a minimal medium. Pseudomonads did not modify the growth of L. monocytogenes, whereas Enterobacteriaceae reduced its maximal population by 2 to 3 log CFU/ml. The same effect was observed in a diluted yeast extract medium supplemented with amino acids and glucose, in which L. monocytogenes grown alone reached 109 to 1010 CFU/ml.

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Clark, Linda L., Joseph J. Dajcs, Celeste H. McLean, John G. Bartell, and David W. Stroman. "Pseudomonas otitidis sp. nov., isolated from patients with otic infections." International Journal of Systematic and Evolutionary Microbiology 56, no. 4 (2006): 709–14. http://dx.doi.org/10.1099/ijs.0.63753-0.

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A novel Pseudomonas species, for which the name Pseudomonas otitidis sp. nov. is proposed, was identified from clinical specimens of infected human ears. Forty-one pseudomonads (34 from patients with acute otitis externa, six from patients with acute otitis media with otorrhoea and one from a patient with chronic suppurative otitis media) were recovered that did not match any known species. On the basis of genetic analyses and biochemical characterization, these isolates were shown to belong to the genus Pseudomonas. 16S rRNA gene sequence analysis and DNA–DNA hybridization studies indicated t

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23

Inoue, Hiroyuki, Osamu Takimura, Hiroyuki Fuse, Katsuji Murakami, Kazuo Kamimura, and Yukiho Yamaoka. "Degradation of Triphenyltin by a Fluorescent Pseudomonad." Applied and Environmental Microbiology 66, no. 8 (2000): 3492–98. http://dx.doi.org/10.1128/aem.66.8.3492-3498.2000.

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ABSTRACT Triphenyltin (TPT)-degrading bacteria were screened by a simple technique using a post-column high-performance liquid chromatography using 3,3′,4′,7-tetrahydroxyflavone as a post-column reagent for determination of TPT and its metabolite, diphenyltin (DPT). An isolated strain, strain CNR15, was identified as Pseudomonas chlororaphis on the basis of its morphological and biochemical features. The incubation of strain CNR15 in a medium containing glycerol, succinate, and 130 μM TPT resulted in the rapid degradation of TPT and the accumulation of approximately 40 μM DPT as the only metab

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Martusevich, Andrew K., Ivan V. Bocharin, Elena A. Kochkurova, and Natalia A. Ronzhina. "INFLUENCE OF DISINFECTANT ON CRYSTALLOGENIC ACTIVITY OF PSEUDOMONAS AERUGINOSA IN VITRO." Siberian Journal of Life Sciences and Agriculture 13, no. 5 (2021): 191–204. http://dx.doi.org/10.12731/2658-6649-2021-13-5-191-204.

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The purpose of this work was to clarify the crystallogenic properties of pseudomonads under the action of an antiseptic. Material and methods. The material for the study was 8 strains of P. aeruginosa isolated from patients of the burn Department. In accordance with the purpose and objectives of the study, the work was performed in 3 stages: assessment of the biological properties of isolated pseudomonad strains; determination of sensitivity to disinfectants by the square method; assessment of the crystallogenic (initiating) activity of pseudomonads in individual and joint form with the

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Outryve, M. F. Van, F. Gosselé, K. Kersters, and J. Swings. "The composition of the rhizosphere of chicory (Cichorium intybus L. var. foliosum Hegi)." Canadian Journal of Microbiology 34, no. 11 (1988): 1203–8. http://dx.doi.org/10.1139/m88-211.

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The bacterial composition of the chicory rhizosphere (Cichorium intybus L. var. foliosum Hegi) was examined at four different growth stages in the field and also after 1 month storage of the roots. Based on protein fingerprints (SDS – polyacrylamide gel electrophoresis of total cell proteins) 233 isolates were grouped into 117 different groups. Forty percent of the isolates belonged to one of three groups: CH001, CH002, or CH213. Fingerprint type CH001 and CH002 were comprised of fluorescent pseudomonads. Fingerprint type CH213 was identified as Alcaligenes paradoxus. Fingerprint type CH213 st

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Obukhova, Olga V., and Lubov V. Lartseva. "Halotolerance of pseudomonads isolated from aquatic environment and fish (Sander lucioperca) in the Volga River delta." Hygiene and sanitation 100, no. 3 (2021): 204–7. http://dx.doi.org/10.47470/0016-9900-2021-100-3-204-207.

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Introduction. The material shows halophiles bacteria R. Psendomonas the water’s microbiota and the pikeperch in spring and autumn. The attachment of Pseudomonas isolated from these habitats, certain Delta areas has not been identified. Materials and methods. 190 “water” strains and 720 ones isolated from fish were experimentally tested. In meat-peptone broth (MPB) with 3.0, 7.0, and 10.0% NaCl content, daily cultures of analyzed bacteria were sown, incubation of which was carried out at 37 0 C, and the results were taken into account after 24 and 48 hours. Results. There were no significant di

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Brown, Gerry, Zeayen Khan, and Ran Lifshitz. "Plant growth promoting rhizobacteria: strain identification by restriction fragment length polymorphisms." Canadian Journal of Microbiology 36, no. 4 (1990): 242–48. http://dx.doi.org/10.1139/m90-042.

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A genomic library of the Pseudomonas putida strain GR12-2 was screened to identify both genus-universal and strain-specific 8-kilobase inserts. The genus-universal clone (pAM141), in combination with the restriction enzymes EcoRI, PstI, and PvuII, was used to generate unique restriction fragment length polymorphisms for 20 related plant growth promoting rhizobacteria and seven reference strains. Strain restriction fragment length polymorphism profiles based on the genus-universal clone pAM141 allow positive identification of individual pseudomonad strains. The strain-specific clone (pAM227) cl

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Grgurina, Ingeborg, Mekki Bensaci, Gabriella Pocsfalvi, et al. "Novel Cyclic Lipodepsipeptide from Pseudomonas syringae pv. lachrymans Strain 508 and Syringopeptin Antimicrobial Activities." Antimicrobial Agents and Chemotherapy 49, no. 12 (2005): 5037–45. http://dx.doi.org/10.1128/aac.49.12.5037-5045.2005.

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ABSTRACT The syringopeptins are a group of antimicrobial cyclic lipodepsipeptides produced by several plant-associated pseudomonads. A novel syringopeptin, SP508, was shown to be produced as two homologs (A and B) by Pseudomonas syringae pv. lachrymans strain 508 from apple and to structurally resemble syringopeptin SP22. SP508 differed from SP22 and other syringopeptins by having three instead of four α,β-unsaturated amino acids and a longer β-hydroxy acyl chain. Both SP508 and SP22 displayed growth-inhibitory activities against Mycobacterium smegmatis, other gram-positive bacteria, and yeast

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Behrendt, Undine, Andreas Ulrich, and Peter Schumann. "Fluorescent pseudomonads associated with the phyllosphere of grasses; Pseudomonas trivialis sp. nov., Pseudomonas poae sp. nov. and Pseudomonas congelans sp. nov." International Journal of Systematic and Evolutionary Microbiology 53, no. 5 (2003): 1461–69. http://dx.doi.org/10.1099/ijs.0.02567-0.

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Rezzonico, Fabio, Geneviève Défago, and Yvan Moënne-Loccoz. "Comparison of ATPase-Encoding Type III Secretion System hrcN Genes in Biocontrol Fluorescent Pseudomonads and in Phytopathogenic Proteobacteria." Applied and Environmental Microbiology 70, no. 9 (2004): 5119–31. http://dx.doi.org/10.1128/aem.70.9.5119-5131.2004.

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ABSTRACT Type III protein secretion systems play a key role in the virulence of many pathogenic proteobacteria, but they also occur in nonpathogenic, plant-associated bacteria. Certain type III protein secretion genes (e.g., hrcC) have been found in Pseudomonas sp. strain SBW25 (and other biocontrol pseudomonads), but other type III protein secretion genes, such as the ATPase-encoding gene hrcN, have not been found. Using both colony hybridization and a PCR approach, we show here that hrcN is nevertheless present in many biocontrol fluorescent pseudomonads. The phylogeny of biocontrol Pseudomo

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Bophela, Khumbuzile N., Yolanda Petersen, Carolee T. Bull, and Teresa A. Coutinho. "Identification of Pseudomonas Isolates Associated With Bacterial Canker of Stone Fruit Trees in the Western Cape, South Africa." Plant Disease 104, no. 3 (2020): 882–92. http://dx.doi.org/10.1094/pdis-05-19-1102-re.

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Bacterial canker is a common bacterial disease of stone fruit trees. The causal agents responsible for the disease include several pathovars in Pseudomonas syringae sensu lato and newly described Pseudomonas species. Pseudomonad strains were isolated from symptomatic stone fruit trees, namely apricot, peach, and plum trees cultivated in spatially separated orchards in the Western Cape. A polyphasic approach was used to identify and characterize these strains. Using a multilocus sequence typing approach of four housekeeping loci, namely cts, gapA, gyrB, and rpoD, the pseudomonad strains were de

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Baltrus, David A., Kevin Dougherty, Beatriz Diaz, and Rachel Murillo. "Evolutionary Plasticity of AmrZ Regulation in Pseudomonas." mSphere 3, no. 2 (2018): e00132-18. http://dx.doi.org/10.1128/msphere.00132-18.

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ABSTRACT amrZ encodes a master regulator protein conserved across pseudomonads, which can be either a positive or negative regulator of swimming motility depending on the species examined. To better understand plasticity in the regulatory function of AmrZ, we characterized the mode of regulation for this protein for two different motility-related phenotypes in Pseudomonas stutzeri. As in Pseudomonas syringae, AmrZ functions as a positive regulator of swimming motility within P. stutzeri, which suggests that the functions of this protein with regard to swimming motility have switched at least t

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Besedin, O. M., S. O. Kosulnikov, L. M. Storubel, et al. "Infections caused by Pseudomonas aeruginosa isolates in patients of Surgical Infections Department." Modern medical technologies 41 part 1, no. 2 (2019): 56–60. http://dx.doi.org/10.34287/mmt.2(41).2019.11.

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The role of Pseudomonas aeruginosa isolates among the pathogens of surgical infection in purulent-septic surgery department for 2018 is determined. Investigated the antibiotic resistance of Pseudomonas aeruginosa hospital strains and the most effective antibiotics were investigated. Poly resistant in wound material were almost half of the cultures of Pseudomonas aeruginosa (19 strains, 45,2%). Carbapenem resistant Pseudomonas aeruginosa was found to be 47,1%. Of the aminoglycoside group antibiotics, Tobramycin (82,1%) showed the best sensitivity, Amikacin was sensitive in half of the microorga

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Mulet, Magdalena, María José Martínez, Margarita Gomila, et al. "Genome-Based Species Diversity Assessment in the Pseudomonas chlororaphis Phylogenetic Subgroup and Proposal of Pseudomonas danubii sp. nov. Isolated from Freshwaters, Soil, and Rhizosphere." Diversity 15, no. 5 (2023): 617. http://dx.doi.org/10.3390/d15050617.

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The Pseudomonas chlororaphis phylogenetic subgroup of species, within the Pseudomonas fluorescens group, currently includes seven bacterial species, all of which have environmental relevance. Phylogenomic analyses help clarify the taxonomy of strains in the group and allow for precise identification. Thirteen antibiotic-resistant strains isolated in a previous study from nine different sampling sites in the Danube River were suspected to represent a novel species and are investigated taxonomically in the present study, together with four other strains isolated from the Woluwe River (Belgium) t

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FREEDMAN, DANIEL J., JEFFERY K. KONDO, and DOUGLAS L. WILLRETT. "Antagonism of Foodborne Bacteria by Pseudomonas spp.: A Possible Role for Iron1." Journal of Food Protection 52, no. 7 (1989): 484–89. http://dx.doi.org/10.4315/0362-028x-52.7.484.

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Antagonistic action of Pseudomonas spp. against foodborne spoilage and pathogenic bacteria was studied to determine mechanisms involved in the establishment of dominance by these organisms in food systems. Thirteen Pseudomonas strains from plant and food origin were tested for the ability to inhibit other Pseudomonas spp. on brain heart infusion agar using a bacteriocin screening assay. P. aeruginosa AA was the most active, inhibiting P. phaseolicola, P. pisi, P. putida, P. fluorescens, and P. fragi strains. When testing for antagonism against non-pseudomonads, four Pseudomonas spp. showed wid

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Meyer, Jean-Marie, Christelle Gruffaz, Topi Tulkki, and Daniel Izard. "Taxonomic heterogeneity, as shown by siderotyping, of strains primarily identified as Pseudomonas putida." International Journal of Systematic and Evolutionary Microbiology 57, no. 11 (2007): 2543–56. http://dx.doi.org/10.1099/ijs.0.65233-0.

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One hundred and forty-four fluorescent pseudomonad strains isolated from various environments (soil, water, plant rhizosphere, hospital) and received as Pseudomonas putida (83 strains), P. putida biovar A (49 strains), P. putida biovar B (10 strains) and P. putida biovar C (2 strains), were analysed by the pyoverdine-isoelectrofocusing and pyoverdine-mediated iron uptake methods of siderotyping. Both methods demonstrated a great diversity among these strains, which could be subdivided into 35 siderovars. Some siderovars specifically included strains that have subsequently been transferred to w

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Nagori, Yusuf, Darshan Chandakb, Sunil Dube, and Vatsal B. "Pseudomonas septicaemia: in a case of pancytopenia." International Journal of Research in Medical Sciences 5, no. 2 (2017): 711. http://dx.doi.org/10.18203/2320-6012.ijrms20170180.

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Pseudomonal infection is a rare condition with multiple systemic complications. A new condition of interest is ecthyma gangrenosum in a patient with pseudomonas septicaemia with pancytopenia and megaloblastic anaemia. So here we present you the case of Ecthyma gangrenosum in a 20-year-old female with pseudomonas septicaemia due to pancytopenia. A high degree of clinical suspicion is required, but a tissue sample is ultimately necessary for definitive diagnosis.

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MARSHALL, DOUGLAS L., and RONALD H. SCHMIDT. "Growth of Listeria monocytogenes at 10°C in Milk Preincubated with Selected Pseudomonads1." Journal of Food Protection 51, no. 4 (1988): 277–82. http://dx.doi.org/10.4315/0362-028x-51.4.277.

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Preliminary studies involving co-inoculation of Listeria monocytogenes with Pseudomonas fragi into whole or skim milk demonstrated that neither inhibition nor stimulation of growth occurred for either organism. Additional investigations involved preincubation of whole milk, skim milk, and 10% reconstituted nonfat dry milk (NDM) for 3 d at 10°C with P. fragi, Pseudomonas fluorescens P26, P. fluorescens T25, or P. fluorescens B52, followed by inoculation with L. monocytogenes and further incubation at 10°C. Growth curves of L. monocytogenes were constructed for each treatment combination and gen

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Miranda Ayala, Marcela Alexandra, and Elsa Noralma Lucas Parrales. "Prevalencia de Pseudomonas Aeruginosa productora de Carbapenemasa en pacientes de cuidados intensivos en hospitales de Latinoamérica." Revista Científica Arbitrada Multidisciplinaria PENTACIENCIAS 5, no. 3 (2023): 343–57. http://dx.doi.org/10.59169/pentaciencias.v5i3.546.

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Pseudomonas aeruginosa es un patógeno nosocomial causante de múltiples infecciones y actualmente presenta bastante resistencia a diferentes antibióticos carbapenémicos. Objetivo: Establecer la prevalencia de Pseudomonas aeruginosa productora de Carbapenemasa en pacientes de Cuidados Intensivos en hospitales de Latinoamérica. Metodología: El diseño de la investigación fue cualitativo, revisión sistemática, utilizando bases de datos científicas como Cochrane, PubMed, Medigraphic, Redalyc, Scielo y Google académico y revistas científicas como Elsevier desde el año 2017-2022 en idioma inglés y esp

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Nigam, Rashmi, A. K. Sharma, and Joginder Singh. "Screening of Pseudomonas sp. isolated from rhizosphere of pea plant as plant growth promoter and biocontrol agent." International Journal of Agricultural Invention 1, no. 02 (2016): 138–44. http://dx.doi.org/10.46492/ijai/2016.1.2.3.

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Plant growth promoting rhizobacteria (PGPR) are a heterogeneous group of bacteria that are found in the rhizosphere and rhizoplane which can improve plant growth. Pseudomonas spp. is one of the most promising groups of PGPR which can control plant pathogenic microbes in the soil. In this study, an attempt was made to isolate Pseudomonas spp., a potent PGPR in the rhizosphere. Through appropriate microbiological and biochemical methods, the study demonstrated the presence of fluorescent and nonfluorescent Pseudomonads in the rhizosphere of pea. 12 different strains of Pseudomonas were isolated

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Simon, Max A., Chayanid Ongpipattanakul, Satish K. Nair, and Wilfred A. van der Donk. "Biosynthesis of fosfomycin in pseudomonads reveals an unexpected enzymatic activity in the metallohydrolase superfamily." Proceedings of the National Academy of Sciences 118, no. 23 (2021): e2019863118. http://dx.doi.org/10.1073/pnas.2019863118.

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The epoxide-containing phosphonate natural product fosfomycin is a broad-spectrum antibiotic used in the treatment of cystitis. Fosfomycin is produced by both the plant pathogen Pseudomonas syringae and soil-dwelling streptomycetes. While the streptomycete pathway has recently been fully elucidated, the pseudomonad pathway is still mostly elusive. Through a systematic evaluation of heterologous expression of putative biosynthetic enzymes, we identified the central enzyme responsible for completing the biosynthetic pathway in pseudomonads. The missing transformation involves the oxidative decar

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Gopal, Surendra, Reshma Francis, and A. K. Sreelatha. "Impact of soil temperature, pH and carbon dioxide on the population and efficiency of fluorescent pseudomonad in the rhizosphere soil of Pokkali rice." Environment Conservation Journal 24, no. 1 (2023): 163–70. http://dx.doi.org/10.36953/ecj.10262239.

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The present study was aimed at the evaluation of soil temperature, pH and carbon dioxide evolution on the number and efficiency of fluorescent pseudomonads around the root system of Pokkali rice at Vytilla in Ernakulam district of Kerala. Two plots (40 m2) comprising control (without application of Pseudomonas fluorescens) and P. fluorescens treated plants were used for the field experiment. The isolates of fluorescent Pseudomonads or Pseudomonas fluorescence were counted and their efficiency was assessed for IAA, ammonia, HCN and siderophore production. Simultaneously, soil temperature, pH, a

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Bozal, Núria, M. Jesús Montes, and Elena Mercadé. "Pseudomonas guineae sp. nov., a novel psychrotolerant bacterium from an Antarctic environment." International Journal of Systematic and Evolutionary Microbiology 57, no. 11 (2007): 2609–12. http://dx.doi.org/10.1099/ijs.0.65141-0.

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Two Gram-negative, cold-adapted, aerobic bacteria, designated strains M8T and M6, were isolated from soil collected from the South Shetland Islands. The organisms were rod-shaped, catalase- and oxidase-positive and motile by means of polar flagella. These two psychrotolerant strains grew between −4 and 30 °C. 16S rRNA gene sequence analysis placed strains M8T and M6 within the genus Pseudomonas. DNA–DNA hybridization experiments between the Antarctic isolate M8T and type strains of phylogenetically related species, namely Pseudomonas peli and Pseudomonas anguilliseptica, revealed levels of rel

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Sazinas, Pavelas, Morten Lindqvist Hansen, May Iren Aune, Marie Højmark Fischer, and Lars Jelsbak. "A Rare Thioquinolobactin Siderophore Present in a Bioactive Pseudomonas sp. DTU12.1." Genome Biology and Evolution 11, no. 12 (2019): 3529–33. http://dx.doi.org/10.1093/gbe/evz267.

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Abstract Many of the soil-dwelling Pseudomonas species are known to produce secondary metabolite compounds, which can have antagonistic activity against other microorganisms, including important plant pathogens. It is thus of importance to isolate new strains of Pseudomonas and discover novel or rare gene clusters encoding bioactive products. In an effort to accomplish this, we have isolated a bioactive Pseudomonas strain DTU12.1 from leaf-covered soil in Denmark. Following genome sequencing with Illumina and Oxford Nanopore technologies, we generated a complete genome sequence with the length

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Castignetti, Domenic. "Probing of Pseudomonas aeruginosa , Pseudomonas aureofaciens , Burkholderia ( Pseudomonas ) cepacia , Pseudomonas fluorescens , and Pseudomonas putida with the Ferripyochelin Receptor A Gene and the Synthesis of Pyochelin in Pseudomonas aureofaciens , Pseudomonas fluorescens , and Pseudomonas putida." Current Microbiology 34, no. 4 (1997): 250–57. http://dx.doi.org/10.1007/s002849900178.

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46

Norris, Sandra M. "Penicillins With Antipseudomonal Activity." Infection Control 6, no. 4 (1985): 165–68. http://dx.doi.org/10.1017/s0195941700062986.

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The escalating role of Pseudomonas aeruginosa as a nosocomial pathogen, the relatively high mortality rate associated with pseudomonal infections, the intrinsic antibiotic resistance of this versatile, ubiquitous organism, and the growing number of reports of multiple antibiotic resistance developing during therapy of Pseudomonas infections prompt a review of currently available penicillins with antipseudomonal activity. Ticarcillin, piperacillin, mezlocillin and azlocillin have upstaged carbenicillin, the first antipseudomonal, β-lactam agent clinically used, with other products “in the wings

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Norat, Carlos Eduardo Tavares, Luiz Gustavo Pragana, Lizeth Yuliana Acevedo Jaramillo, Rafael de Almeida Travassos, and Ulrich Vasconcelos. "Hydrocarbonoclastic activity in bacterial biofilms: A systematic study emphasizing pseudomonads." Conjecturas 22, no. 12 (2022): 548–62. http://dx.doi.org/10.53660/conj-1568-2d01.

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Pseudomonas aeruginosa is a ubiquitous fluorescent, rod-shaped pseudomonad, with a high metabolic capacity, and potential for application in processes to remove recalcitrant compounds such as petroleum hydrocarbons (PHC) from the environment. The bacterium persists in sites with highly selective pressures such as those contaminated by PHC. One of the bacterium's strategies is to colonize biofilms which enhance its protection from toxic compounds and favor oil uptake. It is the most prevalent microbe at sites impacted by PHC owing to the use of aliphatic hydrocarbons to form biofilms and other

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Rivilla, Rafael, and Jacob G. Malone. "Plant-Associated Pseudomonads." Microorganisms 11, no. 5 (2023): 1216. http://dx.doi.org/10.3390/microorganisms11051216.

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Bacteria belonging to the genus Pseudomonas (the pseudomonads) are a group of Gammaproteobacteria that are characterized by a high metabolic versatility and adaption to different ecological niches [...]

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Ikram, Sadia, Saima Inam, Saba Shamim, Syed Zeeshan Haider, Muhammad Atif Qureshi, and Asma Inam. "Emerging Patterns in Antimicrobial Susceptibility Profiles of Pseudomonas SPP- Hospital Based Study." Pakistan Journal of Medical and Health Sciences 17, no. 2 (2023): 129–31. http://dx.doi.org/10.53350/pjmhs2023172129.

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Background: There is an emerging trend of pseudomonas infections in immune-compromised patients, specifically in hospital settings. The flagship member of this family is Pseudomonas aeruginosa, which is a major infectious agent. This study assessed the distribution and susceptibility patterns of Pseudomonas species isolated from various specimens as a part of surveillance program, in order to devise antibiograms. Aim: To determine frequency & antimicrobial sensitivities of Pseudomonas species in a tertiary care hospital from Lahore. Study design: Retrospective, descriptive, cross sectional

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Swingle, Bryan, Zhongmeng Bao, Eric Markel, Alan Chambers, and Samuel Cartinhour. "Recombineering Using RecTE from Pseudomonas syringae." Applied and Environmental Microbiology 76, no. 15 (2010): 4960–68. http://dx.doi.org/10.1128/aem.00911-10.

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ABSTRACT In this report, we describe the identification of functions that promote genomic recombination of linear DNA introduced into Pseudomonas cells by electroporation. The genes encoding these functions were identified in Pseudomonas syringae pv. syringae B728a based on similarity to the lambda Red Exo/Beta and RecET proteins encoded by the lambda and Rac bacteriophages of Escherichia coli. The ability of the pseudomonad-encoded proteins to promote recombination was tested in P. syringae pv. tomato DC3000 using a quantitative assay based on recombination frequency. The results show that th

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