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Journal articles on the topic 'Pseudomoans fluorescens'

Author: Grafiati

Published: 4 June 2021

Last updated: 18 February 2022

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1

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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2

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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3

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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4

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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5

Gangwar, Gokil Prasad, and A. P. Sinha. "Effect of fungal and bacterial bioagent application on total phenolic content in rice leaves pre-inoculated with Xanthomonas oryzae pv. oryzae (Uyeda and Ishiyama) Dowson." Journal of Applied and Natural Science 6, no. 1 (2014): 254–57. http://dx.doi.org/10.31018/jans.v6i1.410.

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Present study was carried out to observe the effect of fungal and bacterial bioagents on total phenolic content in rice leaves pre-inoculated with Xanthomonas oryzae pv. oryzae and on disease severity of bacterial leaf blight of rice. Two commercial formulations of Trichoderma harzianum (PBA-1) and Pseudomonas fluorescens (PBA-2) and four formulations of fluorescent pseudomonads and Trichoderma spp. viz, P. fluorescens (Pf 83, rice leaf isolate), fluorescent pseudomonad (FLP 88, rice leaf isolate), T. harzianum (rice leaf isolate), Trichoderma spp. (isolate 40, isolated from rice field soil) w

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6

Rochat, Laurène, Maria Péchy-Tarr, Eric Baehler, Monika Maurhofer, and Christoph Keel. "Combination of Fluorescent Reporters for Simultaneous Monitoring of Root Colonization and Antifungal Gene Expression by a Biocontrol Pseudomonad on Cereals with Flow Cytometry." Molecular Plant-Microbe Interactions® 23, no. 7 (2010): 949–61. http://dx.doi.org/10.1094/mpmi-23-7-0949.

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Some root-associated pseudomonads sustain plant growth by suppressing root diseases caused by pathogenic fungi. We investigated to which extent select cereal cultivars influence expression of relevant biocontrol traits (i.e., root colonization efficacy and antifungal activity) in Pseudomonas fluorescens CHA0. In this representative plant-beneficial bacterium, the antifungal metabolites 2,4-diacetylphloroglucinol (DAPG), pyrrolnitrin (PRN), pyoluteorin (PLT), and hydrogen cyanide (HCN) are required for biocontrol. To monitor host plant effects on the expression of biosynthetic genes for these c

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7

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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8

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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9

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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10

Fakhouri, W. D., and H. Buchenauer. "Enhancement of population densities of fluorescent pseudomonads in the rhizosphere of tomato plants by addition of acibenzolar-S-methyl." Canadian Journal of Microbiology 48, no. 12 (2002): 1069–75. http://dx.doi.org/10.1139/w02-105.

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Fluorescent pseudomonad isolates G309 and CW2, in combination with the resistance inducer acibenzolar-S-methyl (ASM), improved control of fungal and bacterial diseases on tomato plants. The interactions of the bacteria in the presence of ASM showed that in vitro growth of Pseudomonas fluorescens G309 and Pseudomonas sp. strain CW2 was not affected in King's B broth supplemented with 10 and 20 μM ASM. Also, the bacterial cells were not able to utilize ASM as a nutrient source. In vitro production of the two antimicrobial secondary metabolites phenazine-1-carboxylic acid and 2-OH-phenazine by th

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11

Velusamy, Palaniyandi, J. Ebenezar Immanuel, Samuel S. Gnanamanickam, and Linda Thomashow. "Biological control of rice bacterial blight by plant-associated bacteria producing 2,4-diacetylphloroglucinol." Canadian Journal of Microbiology 52, no. 1 (2006): 56–65. http://dx.doi.org/10.1139/w05-106.

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Certain plant-associated strains of fluorescent Pseudomonas spp. are known to produce the antimicrobial antibiotic 2,4-diacetylphloroglucinol (DAPG). It has antibacterial, antifungal, antiviral, and antihelminthic properties and has played a significant role in the biological control of tobacco, wheat, and sugar beet diseases. It has never been reported from India and has not been implicated in the biological suppression of a major disease of the rice crop. Here, we report that a subpopulation of 27 strains of plant-associated Pseudomonas fluorescens screened in a batch of 278 strains of fluor

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12

Mazzola, Mark, and Yu-Huan Gu. "Impact of Wheat Cultivation on Microbial Communities from Replant Soils and Apple Growth in Greenhouse Trials." Phytopathology® 90, no. 2 (2000): 114–19. http://dx.doi.org/10.1094/phyto.2000.90.2.114.

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Studies were conducted to assess the impact of short-term rotations of wheat on microbial community composition and growth of apple in soils from replant orchard sites. Soils from two orchards were cultivated with three successive 28-day growth cycles of ‘Eltan’, ‘Penewawa’, or ‘Rely’ wheat in the greenhouse and subsequently planted to ‘Gala’ apple seedlings. Cultivation of orchard replant soils with any of the three wheat cultivars enhanced growth of apple relative to that achieved in untreated soils. Improved growth was associated with a marked reduction in apple root infection by species of

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13

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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14

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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15

Behrendt, Undine, Andreas Ulrich, Peter Schumann, Jean-Marie Meyer, and Cathrin Spröer. "Pseudomonas lurida sp. nov., a fluorescent species associated with the phyllosphere of grasses." International Journal of Systematic and Evolutionary Microbiology 57, no. 5 (2007): 979–85. http://dx.doi.org/10.1099/ijs.0.64793-0.

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The taxonomic position of a group of fluorescent pseudomonad strains isolated from the phyllosphere of grasses was investigated through a polyphasic approach. Riboprinting analysis revealed highly similar patterns for the investigated strains which supported, together with the agreement of many phenotypic characteristics, their affiliation to the same species. A comparison of 16S rRNA gene sequences of strain P 513/18T, a representative strain from the grass isolates, revealed that it was affiliated to the cluster of the ‘Pseudomonas fluorescens group’, with Pseudomonas costantinii as the clos

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16

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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17

Mazzola, Mark, David M. Granatstein, Don C. Elfving, Kent Mullinix, and Yu-Huan Gu. "Cultural Management of Microbial Community Structure to Enhance Growth of Apple in Replant Soils." Phytopathology® 92, no. 12 (2002): 1363–66. http://dx.doi.org/10.1094/phyto.2002.92.12.1363.

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Apple replant disease typically is managed through pre-plant application of broad-spectrum soil fumigants including methyl bromide. The impending loss or restricted use of soil fumigants and the needs of an expanding organic tree fruit industry necessitate the development of alternative control measures. The microbial community resident in a wheat field soil was shown to suppress components of the microbial complex that incites apple replant disease. Pseudomonas putida was the primary fluorescent pseudomonad recovered from suppressive soil, whereas Pseudomonas fluorescens bv. III was dominant

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18

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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19

LIAO, CHING-HSING, and GERALD M. SAPERS. "Influence of Soft Rot Bacteria on Growth of Listeria monocytogenes on Potato Tuber Slices†." Journal of Food Protection 62, no. 4 (1999): 343–48. http://dx.doi.org/10.4315/0362-028x-62.4.343.

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Growth of Listeria monocytogenes on potato tuber slices and its interaction with four representative species of soft rot bacteria (Pseudomonas fluorescens, P. viridiflava, Erwinia carotovora subsp. carotovora, and Xanthomonas campestris) were investigated. When potato tuber slices were inoculated with one of two L. monocytogenes strains (Scott A and ATCC 15313), an increase in numbers of 3 to 4 logs per gram of tissue was observed with samples that were stored at 20°C for 6 days. However, an increase of about 2 logs was observed with samples that were stored at 8°C for 12 days. When potato sli

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Gandraburova, N. I., E. I. Kharina, and A. G. Gadzhiahmedova. "EFFECTS OF PSEUDOMONAS FLUORESCENS ON SOME SOIL MICROORGANISMS." Nauka v sovremennom mire 37, no. 4 (2019): 13–17. http://dx.doi.org/10.31618/2524-0935-2019-37-4-13-17.

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YOON, Hong Mook, Sung Hoon MOON, and Young Hwan SONG. "Characterization of Biosurfactant Produced by Pseudomonas fluorescens PD101." Korean Journal of Fisheries and Aquatic Sciences 36, no. 3 (2003): 230–38. http://dx.doi.org/10.5657/kfas.2003.36.3.230.

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22

Mavrodi, Dmitri V., Robert F. Bonsall, Shannon M. Delaney, Marilyn J. Soule, Greg Phillips, and Linda S. Thomashow. "Functional Analysis of Genes for Biosynthesis of Pyocyanin and Phenazine-1-Carboxamide from Pseudomonas aeruginosa PAO1." Journal of Bacteriology 183, no. 21 (2001): 6454–65. http://dx.doi.org/10.1128/jb.183.21.6454-6465.2001.

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ABSTRACT Two seven-gene phenazine biosynthetic loci were cloned fromPseudomonas aeruginosa PAO1. The operons, designatedphzA1B1C1D1E1F1G1 and phzA2B2C2D2E2F2G2, are homologous to previously studied phenazine biosynthetic operons from Pseudomonas fluorescens and Pseudomonas aureofaciens. Functional studies of phenazine-nonproducing strains of fluorescent pseudomonads indicated that each of the biosynthetic operons from P. aeruginosa is sufficient for production of a single compound, phenazine-1-carboxylic acid (PCA). Subsequent conversion of PCA to pyocyanin is mediated in P. aeruginosa by two

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23

Kim, Tack-Soo, Swarnalee Dutta, Se Won Lee, and Kyungseok Park. "Endophytic bacterium Pseudomonas fluorescens strain EP103 was effective against Phytophthora capsici causing blight in chili pepper." Korean Journal of Pesticide Science 18, no. 4 (2014): 422–28. http://dx.doi.org/10.7585/kjps.2014.18.4.422.

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Mehnaz, Samina, Brian Weselowski, Faheem Aftab, Sadaf Zahid, George Lazarovits, and Javed Iqbal. "Isolation, characterization, and effect of fluorescent pseudomonads on micropropagated sugarcane." Canadian Journal of Microbiology 55, no. 8 (2009): 1007–11. http://dx.doi.org/10.1139/w09-050.

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In this study, we report on the isolation, identification, and characterization of seven fluorescent pseudomonads isolated from the roots, shoots, and rhizosphere soil of sugarcane and their impacts on the growth of sugarcane plantlets. 16S rRNA gene sequence of five isolates showed close homology with Pseudomonas putida , one with Pseudomonas graminis , and one with Pseudomonas fluorescens . Physiological and biochemical characterizations were determined using API50CH and QTS24 identification kits. The isolates were also subjected to tests for various known growth promoting properties includi

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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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Ramette, Alban, Michele Frapolli, Geneviève Défago, and Yvan Moënne-Loccoz. "Phylogeny of HCN Synthase-Encoding hcnBC Genes in Biocontrol Fluorescent Pseudomonads and Its Relationship with Host Plant Species and HCN Synthesis Ability." Molecular Plant-Microbe Interactions® 16, no. 6 (2003): 525–35. http://dx.doi.org/10.1094/mpmi.2003.16.6.525.

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Hydrogen cyanide (HCN) is a broad-spectrum antimicrobial compound involved in biological control of root diseases by many plant-associated fluorescent pseudomonads. The HCN synthase is encoded by three biosynthetic genes (hcnA,hcnB, and hcnC), but little is known about the diversity of these genes in fluorescent Pseudomonas spp. and in other bacteria. Here, the partial hcnBC sequence was determined for a worldwide collection of biocontrol fluorescent Pseudomonas spp. Phylogenies based on hcnBC and deduced protein sequences revealed four main bacterial groups, but topological incongruences were

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Silva, Gildo Almeida da, and Erik Amazonas de Almeida. "Production of yellow-green fluorescent pigment by Pseudomonas fluorescens." Brazilian Archives of Biology and Technology 49, no. 3 (2006): 411–19. http://dx.doi.org/10.1590/s1516-89132006000400009.

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A medium was prepared from brewery waste yeast with and without mineral salts to study growth and yellow-green fluorescent pigment production (YGFP) by Pseudomonas fluorescens. The King's medium used for detection of siderophore production were expressively weaker inductors of YGFP formation when compared to FYE medium. Although FYE and CYE could be used for growth of P. fluorescens, only FYE was an attractive medium for detection of YGFP strain producers.

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Sugiarti, Sri, Setyawan P. Sakti, and Unggul P. Juswono. "About Natural B Focus and Scope Editorial Team Publication Ethics Article Tools Print this article Indexing metadata How to cite item Supplementary files Email this article Email the author Information for Author Author Guidelines Template (.docx) Indexed In User You are logged in as... smaryanto My Profile Log Out Notifications View (1350 new) Manage Journal Content Search Search Scope Search Browse By Issue By Author By Title Information For Readers For Authors For Librarians Utilization of Pseudomonas putida and Pseudomonas fluorescens as Biosensor to Measure BOD5 In Water Level." Natural B 2, no. 2 (2013): 134–39. http://dx.doi.org/10.21776/ub.natural-b.2013.002.02.6.

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Aloysius Ng. Lende, Laurensius Lehar, and Heny MC Sine. "Application of organic fertilizer and Pseudomonas fluorescens on the growth and yield of shallot cultivar Sabu Raijua (Allium ascalonicum L .) in dry land." GSC Advanced Research and Reviews 5, no. 2 (2020): 123–30. http://dx.doi.org/10.30574/gscarr.2020.5.2.0105.

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The specific objectives of this study were 1 ) knowing certain types of organic fertilizers on the growth of shallots 2 ) knowing the concentrations of Pseudomonas fluorescenss certain the growth of shallots, 3 ) knowing the types of organic fertilizers and the concentrations Pseudomonas fluorescens specificity increase the optimal yield of shallots. To achieve this goal, this research was conducted using factorial experiments with a split Plot Design with 10 treatments and 3 replications. So that there are 10 treatment combinations of a total number of 30 experimental plots. There were 2 fact

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MacDonald, James C., and Cheryl A. Bock. "Spectral properties of pseudobactin produced by Pseudomonas sp. B10." Canadian Journal of Botany 65, no. 4 (1987): 703–5. http://dx.doi.org/10.1139/b87-093.

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The siderophore, pseudobactin, was isolated from the plant growth promoting rhizobacterium Pseudomonas B10, and its absorption and corrected fluorescence spectra were determined over a range of pH values. These spectra were similar to those reported for other fluorescent siderophores from other Pseudomonas, so that differentiation of pseudobactin from such related siderophores by absorption or fluorescence spectra is not feasible.

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Mazurier, Sylvie, Annabelle Merieau, Dorian Bergeau, et al. "Type III Secretion System and Virulence Markers Highlight Similarities and Differences between Human- and Plant-Associated Pseudomonads Related to Pseudomonas fluorescens and P. putida." Applied and Environmental Microbiology 81, no. 7 (2015): 2579–90. http://dx.doi.org/10.1128/aem.04160-14.

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ABSTRACTPseudomonas fluorescensis commonly considered a saprophytic rhizobacterium devoid of pathogenic potential. Nevertheless, the recurrent isolation of strains from clinical human cases could indicate the emergence of novel strains originating from the rhizosphere reservoir, which could be particularly resistant to the immune system and clinical treatment. The importance of type three secretion systems (T3SSs) in the relatedPseudomonas aeruginosanosocomial species and the occurrence of this secretion system in plant-associatedP. fluorescensraise the question of whether clinical isolates ma

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Couillerot, Olivier, Emeline Combes-Meynet, Joël F. Pothier, et al. "The role of the antimicrobial compound 2,4-diacetylphloroglucinol in the impact of biocontrol Pseudomonas fluorescens F113 on Azospirillum brasilense phytostimulators." Microbiology 157, no. 6 (2011): 1694–705. http://dx.doi.org/10.1099/mic.0.043943-0.

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Pseudomonads producing the antimicrobial metabolite 2,4-diacetylphloroglucinol (Phl) can control soil-borne phytopathogens, but their impact on other plant-beneficial bacteria remains poorly documented. Here, the effects of synthetic Phl and Phl+ Pseudomonas fluorescens F113 on Azospirillum brasilense phytostimulators were investigated. Most A. brasilense strains were moderately sensitive to Phl. In vitro, Phl induced accumulation of carotenoids and poly-β-hydroxybutyrate-like granules, cytoplasmic membrane damage and growth inhibition in A. brasilense Cd. Experiments with P. fluorescens F113

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Davis, Edward W., Rachel A. Okrent, Viola A. Manning, and Kristin M. Trippe. "Unexpected distribution of the 4-formylaminooxyvinylglycine (FVG) biosynthetic pathway in Pseudomonas and beyond." PLOS ONE 16, no. 4 (2021): e0247348. http://dx.doi.org/10.1371/journal.pone.0247348.

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The biological herbicide and antibiotic 4-formylaminooxyvinylglycine (FVG) was originally isolated from several rhizosphere-associated strains of Pseudomonas fluorescens. Biosynthesis of FVG is dependent on the gvg biosynthetic gene cluster in P. fluorescens. In this investigation, we used comparative genomics to identify strains with the genetic potential to produce FVG due to presence of a gvg gene cluster. These strains primarily belong to two groups of Pseudomonas, P. fluorescens and P. syringae, however, a few strains with the gvg cluster were found outside of Pseudomonas. Mass spectromet

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FARRAG, SEHAM A., and ELMER H. MARTH. "Growth of Listeria monocytogenes in the Presence of Pseudomonas fluorescens at 7 or 13°C in Skim Milk." Journal of Food Protection 52, no. 12 (1989): 852–55. http://dx.doi.org/10.4315/0362-028x-52.12.852.

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Autoclaved samples of skim milk were inoculated with Listeria monocytogenes (strain Scott A, California or V7), Pseudomonas fluorescens (strain P26 or B52), or a combination of L. monocytogenes plus P. fluorescens, and incubated at 7 or 13°C for 8 weeks. McBride Listeria Agar was used to determine populations of L. monocytogenes (at 0, 7, 14, 28, 42, or 56 d), and Pseudomonas isolation agar to enumerate P. fluorescens. Growth of L. monocytogenes was somewhat enhanced after 7 d of incubation at 7 but not at 13°C in the presence of pseudomonads. However, after 14 d and until the end of the incub

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DeLong, R. L., Kathy J. Lewis, Suzanne W. Simard, and Susan Gibson. "Fluorescent pseudomonad population sizes baited from soils under pure birch, pure Douglas-fir, and mixed forest stands and their antagonism towardArmillaria ostoyaein vitro." Canadian Journal of Forest Research 32, no. 12 (2002): 2146–59. http://dx.doi.org/10.1139/x02-141.

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The relationship between forest stand composition in southern interior British Columbia and fluorescent pseudomonad bacteria populations was investigated using seedling bioassays. The objectives of this study were to (i) compare the relative population sizes of fluorescent pseudomonads baited from soils in pure paper birch (Betula papyrifera Marsh.), pure Douglas-fir (Pseudotsuga menziesii (Mirb.) Franco), and mixed stands of the two species and (ii) determine if fluorescent pseudomonads from these soils have inhibitory effects against the root pathogen Armillaria ostoyae (Romagn.) Herink in v

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Dynes, James J., John R. Lawrence, Darren R. Korber, George D. W. Swerhone, Gary G. Leppard, and Adam P. Hitchcock. "Morphological and biochemical changes inPseudomonas fluorescensbiofilms induced by sub-inhibitory exposure to antimicrobial agents." Canadian Journal of Microbiology 55, no. 2 (2009): 163–78. http://dx.doi.org/10.1139/w08-109.

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Confocal laser scanning microscopy (CLSM) and scanning transmission X-ray microscopy (STXM) were used to examine the morphological and biochemical changes in Pseudomonas fluorescens biofilms grown in the presence of subinhibitory concentrations of 4 antimicrobial agents: triclosan, benzalkonium chloride, chlorhexidine dihydrochloride, and trisodium phosphate. CLSM analyses using the stains SYTO9 and propidium iodide indicated that the antimicrobial agents affected cell membrane integrity and cellular density to differing degrees. However, fluorescein diacetate assays and plate counts demonstra

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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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Maemunah, Maemunah. "Pengaruh Kombinasi Pseudomonad Flouresen Dan Em4 Dalam Menghambat Pertumbuhan Blood Disease Bacteria (Bdb) Penyebab Penyakit Darah Tanaman Pisang Secara In Vitro." BioScience 1, no. 1 (2017): 70. http://dx.doi.org/10.24036/02017117436-0-00.

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Blood Disease Bacteria is one obstacle in cultivation of bananas. BDB can be controlled using biological agents. Biological agents that can be used to control of blood diseases are Pseudomonad fluorescent and microorganisms in EM4. Pseudomonad fluorescent used as biological agents because of its ability to produce antimicrobial compounds such as siderophores, antibiotics, volatile and cyanide. other than that, the EM4 microorganisms can produce antimicrobial against several bacterial pathogens. This study aims to determine the effect of combination Pseudomonad fluorescent and EM4 to inhibit th

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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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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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Combes-Meynet, Emeline, Joël F. Pothier, Yvan Moënne-Loccoz, and Claire Prigent-Combaret. "The Pseudomonas Secondary Metabolite 2,4-Diacetylphloroglucinol Is a Signal Inducing Rhizoplane Expression of Azospirillum Genes Involved in Plant-Growth Promotion." Molecular Plant-Microbe Interactions® 24, no. 2 (2011): 271–84. http://dx.doi.org/10.1094/mpmi-07-10-0148.

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During evolution, plants have become associated with guilds of plant-growth-promoting rhizobacteria (PGPR), which raises the possibility that individual PGPR populations may have developed mechanisms to cointeract with one another on plant roots. We hypothesize that this has resulted in signaling phenomena between different types of PGPR colonizing the same roots. Here, the objective was to determine whether the Pseudomonas secondary metabolite 2,4-diacetylphloroglucinol (DAPG) can act as a signal on Azospirillum PGPR and enhance the phytostimulation effects of the latter. On roots, the DAPG-p

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Shu, Huizhen, Haiming Chen, Xiaolong Wang, et al. "Antimicrobial Activity and Proposed Action Mechanism of 3-Carene against Brochothrix thermosphacta and Pseudomonas fluorescens." Molecules 24, no. 18 (2019): 3246. http://dx.doi.org/10.3390/molecules24183246.

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3-Carene is an antimicrobial monoterpene that occurs naturally in a variety of plants and has an ambiguous antibacterial mechanism against food-borne germs. The antibacterial effects and action mechanism of 3-carene against Gram-positive Brochothrix thermosphacta ACCC 03870 and Gram-negative Pseudomonas fluorescens ATCC 13525 were studied. Scanning electron microscopy (SEM) examination and leakage of alkaline phosphatase (AKP) verified that 3-carene caused more obvious damage to the morphology and wall structure of B. thermosphacta than P. fluorescens. The release of potassium ions and protein

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Dalterio, R. A., W. H. Nelson, D. Brut, J. F. Sperry, J. F. Tanguay, and S. L. Suib. "The Steady-State and Decay Characteristics of Primary Fluorescence from Live Bacteria." Applied Spectroscopy 41, no. 2 (1987): 234–41. http://dx.doi.org/10.1366/000370287774986804.

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The intrinsic steady-state fluorescence and fluorescence decay of Staphylococcus epidermidis, Pseudomonas fluorescens, Enterobacter cloacae, Escherichia coli, and Bacillus subtilis have been observed. Excitation spectra were obtained while emission at 430, 455, 487 and 514 nm was being monitored. Emission spectra were obtained with the use of excitation wavelengths of 340, 365, 405, 430 and 460 nm. Fluorescence lifetimes were measured at 430, 487, and 514 nm while selective excitation was caused at 340, 405, and 430 nm. The complex nature of the excitation and emission spectra reflects the pre

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Nielsen, T. H., D. Sørensen, C. Tobiasen, et al. "Antibiotic and Biosurfactant Properties of Cyclic Lipopeptides Produced by Fluorescent Pseudomonas spp. from the Sugar Beet Rhizosphere." Applied and Environmental Microbiology 68, no. 7 (2002): 3416–23. http://dx.doi.org/10.1128/aem.68.7.3416-3423.2002.

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ABSTRACT Cyclic lipopeptides (CLPs) with antibiotic and biosurfactant properties are produced by a number of soil bacteria, including fluorescent Pseudomonas spp. To provide new and efficient strains for the biological control of root-pathogenic fungi in agricultural crops, we isolated approximately 600 fluorescent Pseudomonas spp. from two different agricultural soils by using three different growth media. CLP production was observed in a large proportion of the strains (approximately 60%) inhabiting the sandy soil, compared to a low proportion (approximately 6%) in the loamy soil. Chemical s

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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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Mavrodi, Olga V., Dmitri V. Mavrodi, David M. Weller, and Linda S. Thomashow. "Role of ptsP, orfT, and sss Recombinase Genes in Root Colonization by Pseudomonas fluorescens Q8r1-96." Applied and Environmental Microbiology 72, no. 11 (2006): 7111–22. http://dx.doi.org/10.1128/aem.01215-06.

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ABSTRACT Pseudomonas fluorescens Q8r1-96 produces 2,4-diacetylphloroglucinol (2,4-DAPG), a polyketide antibiotic that suppresses a wide variety of soilborne fungal pathogens, including Gaeumannomyces graminis var. tritici, which causes take-all disease of wheat. Strain Q8r1-96 is representative of the D-genotype of 2,4-DAPG producers, which are exceptional because of their ability to aggressively colonize and maintain large populations on the roots of host plants, including wheat, pea, and sugar beet. In this study, three genes, an sss recombinase gene, ptsP, and orfT, which are important in t

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O'Callaghan, M., J. Swaminathan, J. Lottmann, D. A. Wright, and T. A. Jackson. "Seed coating with biocontrol strain Pseudomonas fluorescens F113." New Zealand Plant Protection 59 (August 1, 2006): 80–85. http://dx.doi.org/10.30843/nzpp.2006.59.4420.

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Pseudomonas fluorescens strain F113 which has biocontrol capacity against the plant pathogenic fungus Pythium ultimum was formulated and applied to onion seed using patented biopolymer technology developed at AgResearch Lincoln Initial loadings on seeds ranged between 86 x 10611 x 107 bacteria/seed In a preliminary screening of four different formulations shelf life studies indicated that most formulations maintained high cell numbers on seed stored at 4deg;C for up to 70 days Bacterial numbers declined on seed stored at 20deg;C but significant numbers of bacteria remained viable after 70 days

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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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Hagen, Mary J., Virginia O. Stockwell, Cheryl A. Whistler, Kenneth B. Johnson, and Joyce E. Loper. "Stress Tolerance and Environmental Fitness of Pseudomonas fluorescens A506, Which Has a Mutation in rpoS." Phytopathology® 99, no. 6 (2009): 679–88. http://dx.doi.org/10.1094/phyto-99-6-0679.

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Establishment of suppressive populations of bacterial biological control agents on aerial plant surfaces is a critical phase in biologically based management of floral diseases. Periodically, biocontrol agents encounter inhospitable conditions for growth on plants; consequently, tolerance of environmental stresses may contribute to their fitness. In many gram-negative bacteria, including strains of Pseudomonas spp., the capacity to survive environmental stresses is influenced by the stationary phase sigma factor RpoS. This study focused on the role of RpoS in stress response and epiphytic fitn

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Duponnois, Robin, and Didier Lesueur. "Sporocarps ofPisolithus albusas an ecological niche for fluorescent pseudomonads involved inAcacia mangiumWild –Pisolithus albusectomycorrhizal symbiosis." Canadian Journal of Microbiology 50, no. 9 (2004): 691–96. http://dx.doi.org/10.1139/w04-060.

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Fresh sporocarps and root and soil samples were collected under a monospecific forest plantation of Acacia mangium in Dagana in Northern Senegal and checked for the presence of fluorescent pseudomonads. No bacteria were detected except from sporocarps collected with adhering soil and hyphal strands. Pisolithus sporocarps were dried at 30 °C for 2 weeks, ground, passed through a 2-mm sieve and mixed together. This dry sporocarp powder (DSP) was used to inoculate and form mycorrhizas on A. mangium seedlings in a glasshouse experiment. After 3 months culture, plant growth was increased in the DSP

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