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Journal articles on the topic 'Pseudomonas chlororaphis'

Author: Grafiati

Published: 4 June 2021

Last updated: 26 July 2025

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1

Xu, Wen, Lingling Xu, Xiaoxu Deng, et al. "Biological Control of Take-All and Growth Promotion in Wheat by Pseudomonas chlororaphis YB-10." Pathogens 10, no. 7 (2021): 903. http://dx.doi.org/10.3390/pathogens10070903.

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Wheat is a worldwide staple food crop, and take-all caused by Gaeumannomyces graminis var. tritici can lead to a tremendous decrease in wheat yield and quality. In this study, strain YB-10 was isolated from wheat rhizospheric soil and identified as Pseudomonas chlororaphis by morphology and 16S rRNA gene sequencing. Pseudomonas chlororaphis YB-10 had extracellular protease and cellulase activities and strongly inhibited the mycelium growth of Gaeumannomyces graminis var. tritici in dual cultures. Up to 87% efficacy of Pseudomonas chlororaphis YB-10 in controlling the take-all of seedlings was

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2

Peix, Alvaro, Angel Valverde, Raúl Rivas, et al. "Reclassification of Pseudomonas aurantiaca as a synonym of Pseudomonas chlororaphis and proposal of three subspecies, P. chlororaphis subsp. chlororaphis subsp. nov., P. chlororaphis subsp. aureofaciens subsp. nov., comb. nov. and P. chlororaphis subsp. aurantiaca subsp. nov., comb. nov." International Journal of Systematic and Evolutionary Microbiology 57, no. 6 (2007): 1286–90. http://dx.doi.org/10.1099/ijs.0.64621-0.

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Pseudomonas chlororaphis, Pseudomonas aureofaciens and Pseudomonas aurantiaca were considered as separate species until 1989, when P. aureofaciens was proposed as a later heterotypic synonym of P. chlororaphis with P. aurantiaca remaining as a separate species. Nevertheless, analysis of the almost complete 16S rRNA gene sequences revealed that the type strain of P. aurantiaca, NCIMB 10068T, shows gene sequence similarities close to 99.5 % with respect to P. chlororaphis DSM 50083T and P. aureofaciens DSM 6698T. DNA–DNA hybridization experiments among strains of P. aurantiaca, P. chlororaphis a

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3

Georgieva, G., M. Badalova, F. Feyzula, and T. Nedeva. "Antifungal Activity of Pseudomonas chlororaphis 1S4." Acta Microbiologica Bulgarica 40, no. 3 (2024): 365–72. http://dx.doi.org/10.59393/amb24400311.

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The potential of Pseudomonas chlororaphis 1S4 strain as an antifungal biocontrol agent against three species of the economically important Fusarium pathogens: Fusarium proliferatum C1, Fusarium oxysporum F6, and Fusarium solani F7 is studied. P. chlororaphis 1S4 24 and 48 h fresh and sterilized broth cultures were used to assess their antifungal properties for 168 hours. P. chlororaphis 1S4 imposed fungal growth inhibition of 64-85% against all fungal species, best presented at a relatively early stage of the fungi development (72 h) and sustained throughout the whole cultivation period. The s

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4

Burr, Sarah E., Stefanie Gobeli, Peter Kuhnert, Elinor Goldschmidt-Clermont, and Joachim Frey. "Pseudomonas chlororaphis subsp. piscium subsp. nov., isolated from freshwater fish." International Journal of Systematic and Evolutionary Microbiology 60, no. 12 (2010): 2753–57. http://dx.doi.org/10.1099/ijs.0.011692-0.

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Gram-negative, aerobic, motile, rod-shaped bacteria were isolated from the intestines of freshwater fish on two separate occasions. Colonies of both strains, JF3835T and JF4413, produced non-diffusible green pigment following 4–5 days incubation on Luria–Bertani agar. The most abundant fatty acids were summed feature 3 (comprising C16 : 1 ω7c and/or C15 : 0 iso 2-OH), C16 : 0 and C18 : 1 ω7c. The DNA G+C content was 62.9 mol%. Sequence analysis of the 16S rRNA gene indicated 100 % sequence similarity between the two strains. In comparison with recognized species, the new strains exhibited the

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5

Anderson, Anne J., and Young Cheol Kim. "Insights into plant-beneficial traits of probiotic Pseudomonas chlororaphis isolates." Journal of Medical Microbiology 69, no. 3 (2020): 361–71. http://dx.doi.org/10.1099/jmm.0.001157.

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Pseudomonas chlororaphis isolates have been studied intensively for their beneficial traits. P. chlororaphis species function as probiotics in plants and fish, offering plants protection against microbes, nematodes and insects. In this review, we discuss the classification of P. chlororaphis isolates within four subspecies; the shared traits include the production of coloured antimicrobial phenazines, high sequence identity between housekeeping genes and similar cellular fatty acid composition. The direct antimicrobial, insecticidal and nematocidal effects of P. chlororaphis isolates are corre

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6

Akhapkina, Sofia, Alexander Seleznev, Victoria Efimova, Nikita Lyakhovchenko, and Inna Solyanikova. "Antagonistic activity of Pseudomonas chlororaphis against some mold fungi." BIO Web of Conferences 66 (2023): 04006. http://dx.doi.org/10.1051/bioconf/20236604006.

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The paper presents a study of the antagonistic potential of Pseudomonas chlororaphis VKM B-3546D, isolated from the soil, against mold fungi Alternaria brassicicola VKM F-1864 and Aspergillus unguis VKM F-1754. P. chlororaphis VKM BS-1393 was used as a control culture of bacteria. It was revealed that in the presence of bacteria, the growth rate of mold fungi decreases by 10,2 mm/day. in the presence of P. chlororaphis VKM BS-1393, and by 12,9 mm/day. with P. chlororaphis VKM B-3546D, while the average increase in the colony of Alternaria is 10% and 20%, and aspergillus is 30% and 40%, respect

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7

Hohlneicher, U., R. Hartmann, K. Taraz, and H. Budzikiewicz. "Pyoverdin, Ferribactin, Azotobactin -a New Triade of Siderophores from Pseudomonas chlororaphis ATCC 9446 and Its Relation to Pseudomonas fluorescens ATCC 13525." Zeitschrift für Naturforschung C 50, no. 5-6 (1995): 337–44. http://dx.doi.org/10.1515/znc-1995-5-602.

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Abstract It is shown that Pseudomonas fluorescens ATCC 13525 and Pseudomonas chlororaphis ATCC 9446 produce identical pyoverdins and ferribactins. As the structures of these sidero phores are usually species or even strain specific this exception should be kept in mind in view of the reclassification of the genus Pseudomonas. From Pseudomonas chlororaphis an additional siderophore could be obtained which has the same peptide chain as the co-occur ring pyoverdins and ferribactin, but a chromophore which is typical for azotobactins from Azotobacter vinelandii.

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8

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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9

Gunther, Nereus W., Alberto Nuñez, William Fett, and Daniel K. Y. Solaiman. "Production of Rhamnolipids by Pseudomonas chlororaphis, a Nonpathogenic Bacterium." Applied and Environmental Microbiology 71, no. 5 (2005): 2288–93. http://dx.doi.org/10.1128/aem.71.5.2288-2293.2005.

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ABSTRACT Rhamnolipids, naturally occurring biosurfactants constructed of rhamnose sugar molecules and β-hydroxyalkanoic acids, have a wide range of potential commercial applications. In the course of a survey of 33 different bacterial isolates, we have identified, using a phenotypic assay for rhamnolipid production, a strain of the nonpathogenic bacterial species Pseudomonas chlororaphis that is capable of producing rhamnolipids. Rhamnolipid production by P. chlororaphis was achieved by growth at room temperature in static cultures of a mineral salts medium containing 2% glucose. We obtained y

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10

Calderón, Claudia E., Cayo Ramos, Antonio de Vicente, and Francisco M. Cazorla. "Comparative Genomic Analysis of Pseudomonas chlororaphis PCL1606 Reveals New Insight into Antifungal Compounds Involved in Biocontrol." Molecular Plant-Microbe Interactions® 28, no. 3 (2015): 249–60. http://dx.doi.org/10.1094/mpmi-10-14-0326-fi.

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Pseudomonas chlororaphis PCL1606 is a rhizobacterium that has biocontrol activity against many soilborne phytopathogenic fungi. The whole genome sequence of this strain was obtained using the Illumina Hiseq 2000 sequencing platform and was assembled using SOAP denovo software. The resulting 6.66-Mb complete sequence of the PCL1606 genome was further analyzed. A comparative genomic analysis using 10 plant-associated strains within the fluorescent Pseudomonas group, including the complete genome of P. chlororaphis PCL1606, revealed a diverse spectrum of traits involved in multitrophic interactio

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11

Sharma, Parveen K., Riffat I. Munir, Teresa de Kievit, and David B. Levin. "Synthesis of polyhydroxyalkanoates (PHAs) from vegetable oils and free fatty acids by wild-type and mutant strains of Pseudomonas chlororaphis." Canadian Journal of Microbiology 63, no. 12 (2017): 1009–24. http://dx.doi.org/10.1139/cjm-2017-0412.

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Pseudomonas chlororaphis PA23 was isolated from soybean roots as a plant-growth-promoting rhizobacterium. This strain secretes a wide range of compounds, including the antibiotics phenazine-1-carboxylic acid (PCA), pyrrolnitrin, and 2-hydroxyphenazine. We have determined that P. chlororaphis PA23 can synthesize medium-chain-length polyhydroxyalkanoate (PHA) polymers utilizing free fatty acids, such as octanoic acid and nonanoic acid, as well as vegetable oils as sole carbon sources. Genome analysis identified a pha operon containing 7 genes in P. chlororaphis PA23 that were highly conserved. A

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12

Tolkach, V. F., Yu G. Volkov, N. N. Kakareka, M. R. Aliev, and M. Yu Shchelkanov. "Study of the effect of bacteria of the genus <i>Pseudomonas</i> on the growth and toxin production of the fungus <i>Fusarium graminearum</i> <i>in vitro</i>." South of Russia: ecology, development 18, no. 4 (2024): 104–13. http://dx.doi.org/10.18470/1992-1098-2023-4-104-113.

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Aim. To study the potential of bacteria strains P. chlororaphis BZR 245‐F and Pseudomonas sp. BZR 523‐2 to inhibit the growth of Fusarium ear blight pathogens through the example of the fungus F. graminearum and to reduce the accumulation of deoxynivalenol (DON) and zearalenone (ZEN) in vitro. Materials and Methods. Antifungal metabolites of Pseudomonas bacteria were analysed by thin layer chromatography and bioautography. An experiment on the effect of liquid culture and supernatant of bacteria on the growth and toxin production of the fungus F. graminearum in vitro was carried out on wheat g

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13

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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14

Bataeva, D. S., Yu K. Yushina, A. A. Semenova, E. V. Zaiko, and M. A. Grudistova. "Exploring the potential reservoirs of Pseudomonas spp. bacteria at meat processing factories and poultry farms." Theory and practice of meat processing 9, no. 4 (2025): 304–13. https://doi.org/10.21323/2414-438x-2024-9-4-304-313.

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One of the microorganisms that cause spoilage of meat during its storage is the bacteria Pseudomonas. To prevent contamination of the finished products with these bacteria, it is important to find the places at the enterprise where they aggregate. Within the framework of this study, the objects and premises of the production facilities at meat processing factories and poultry farms were explored to detect their contamination with bacteria of Pseudomonas spp. The potential reservoirs of those bacteria were defined at these plants. In addition, the species diversity of Pseudomonas was establishe

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15

Kang, Beom Ryong, Anne J. Anderson, and Young Cheol Kim. "Hydrogen cyanide produced by Pseudomonas chlororaphis O6 is a key aphicidal metabolite." Canadian Journal of Microbiology 65, no. 3 (2019): 185–90. http://dx.doi.org/10.1139/cjm-2018-0372.

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A biocontrol bacterium, Pseudomonas chlororaphis O6 promotes plant health through multifaceted mechanisms. In this study, we used P. chlororaphis O6 mutants to examine metabolites with aphicidal activity. Direct application of intact P. chlororaphis cells to the surface of second-instar nymphs of the green peach aphid resulted in no mortality. However, nymphs died when exposed only to the volatiles produced by the P. chlororaphis O6 wild-type strain grown on rich media. Mutants lacking the production of two antibiotics, phenazine and pyrrolnitrin, or the insect toxin FitD retained the aphicida

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16

Josic, Dragana, Dejan Cvikic, Jasmina Zdravkovic, et al. "Daucus carrota L. - seed germination and natural infection by Fusarium spp. affected by Pseudomonas spp." Pesticidi i fitomedicina 32, no. 3-4 (2017): 189–95. http://dx.doi.org/10.2298/pif1704189j.

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The inhibitory effect of indigenous Pseudomonas strains on Fusarium spp. isolated from seeds of a new variety of carrot - ?Vizija? and their effects on seed germination were observed. Pseudomonas spp. strains were applied as bacterial suspensions (culture, 106 CFU mL-1) and cell-free supernatant (CFSa -106 and CFSb -108 CFU mL-1) fractions by sowing seeds during 7 (I) and 14 (II) days of incubation. The germination of control ?Vizija? seeds was 19% after the first and 40% after the second incubation period. Pseudomonas chlororaphis Q16 strain exhibited statistically significant increases in se

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17

Lee, Seungjun, Chongtao Ge, Zuzana Bohrerova, Parwinder S. Grewal, and Jiyoung Lee. "Enhancing plant productivity while suppressing biofilm growth in a windowfarm system using beneficial bacteria and ultraviolet irradiation." Canadian Journal of Microbiology 61, no. 7 (2015): 457–66. http://dx.doi.org/10.1139/cjm-2015-0024.

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Common problems in a windowfarm system (a vertical and indoor hydroponic system) are phytopathogen infections in plants and excessive buildup of biofilms. The objectives of this study were (i) to promote plant health by making plants more resistant to infection by using beneficial biosurfactant-producing Pseudomonas chlororaphis around the roots and (ii) to minimize biofilm buildup by ultraviolet (UV) irradiation of the water reservoir, thereby extending the lifespan of the whole system with minimal maintenance. Pseudomonas chlororaphis-treated lettuce grew significantly better than nontreated

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18

Bigaleeva, A. Sh, L. R. Khakimova, O. V. Chubukova, and Z. R. Vershinina. "Strains of Pseudomonas spp. with fungistatic activity." Biomics 16, no. 2 (2024): 195–201. http://dx.doi.org/10.31301/2221-6197.bmcs.2024-11.

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Pseudomonas spp. have great potential as rhizosphere bacteria that stimulate plant growth (PGPR), and also have mycostatic activity against phytopathogenic fungi, therefore this type of microorganisms is of great interest for the creation of biological products with high efficiency for different plant species. The purpose of this work was to study strains of Pseudomonas sp. with fungistatic activity, retain the ability to suppress the growth of phytopathogenic fungal strains Microdochium nivale VKM 3106, Fusarium graminearum VKM 1668, Fusarium culmorum VKM 844 and Bipolaris sorokiniana after l

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19

Kiprianova, Е. А. "АNTIVIRAL ACTIVITY OF LIPOPOLYSACCHARIDES OF Pseudomonas chlororaphis subsp. aureofaciens". Biotechnologia Acta 6, № 2 (2013): 68–73. http://dx.doi.org/10.15407/biotech6.02.068.

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20

Lyakhovchenko, Nikita, Viktoria Efimova, Alexander Seleznev, Zlata Ogneva, and Inna Solyanikova. "Antifungal Activity of Gram-Negative Pigment-Forming Bacteria Against Aspergillus Unguis." BIO Web of Conferences 57 (2023): 06003. http://dx.doi.org/10.1051/bioconf/20235706003.

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The paper presents a study of the antifungal activity of the pigment-forming strains Janthinobacterium lividum VKM B-3515, Pseudomonas chlororaphis VKM B-3546D and their mixture against the test culture Aspergillus unguis VKM F-1754. The growth rate of the colony and the average growth of A. unguis VKM F-1754 in the presence of J. lividum VKM B-3515 were 46.3% lower than the control variant. The growth rate of fungi in the presence of a mixture of two bacteria was 32% lower than in the control, and in the variant with a pure culture of Pseudomonas, it was 21%. The average increase in the diame

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21

Bertani, Iris, Elisa Zampieri, Cristina Bez, Andrea Volante, Vittorio Venturi, and Stefano Monaco. "Isolation and Characterization of Pseudomonas chlororaphis Strain ST9; Rhizomicrobiota and in Planta Studies." Plants 10, no. 7 (2021): 1466. http://dx.doi.org/10.3390/plants10071466.

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The development of biotechnologies based on beneficial microorganisms for improving soil fertility and crop yields could help to address many current agriculture challenges, such as food security, climate change, pest control, soil depletion while decreasing the use of chemical fertilizers and pesticides. Plant growth-promoting (PGP) microbes can be used as probiotics in order to increase plant tolerance/resistance to abiotic/biotic stresses and in this context strains belonging to the Pseudomonas chlororaphis group have shown to have potential as PGP candidates. In this study a new P. chloror

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22

Han, Song Hee, Seung Je Lee, Jae Hak Moon, et al. "GacS-Dependent Production of 2R, 3R-Butanediol by Pseudomonas chlororaphis O6 Is a Major Determinant for Eliciting Systemic Resistance Against Erwinia carotovora but not Against Pseudomonas syringae pv. tabaci in Tobacco." Molecular Plant-Microbe Interactions® 19, no. 8 (2006): 924–30. http://dx.doi.org/10.1094/mpmi-19-0924.

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Root colonization by a plant-beneficial rhizobacterium, Pseudomonas chlororaphis O6, induces disease resistance in tobacco against leaf pathogens Erwinia carotovora subsp. carotovora SCC1, causing soft-rot, and Pseudomonas syringae pv. tabaci, causing wildfire. In order to identify the bacterial determinants involved in induced systemic resistance against plant diseases, extracellular components produced by the bacterium were fractionated and purified. Factors in the culture filtrate inducing systemic resistance were retained in the aqueous fraction rather than being partitioned into ethyl ace

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23

Li, Zhenghua, Xiaoming Li, Qiangcheng Zeng, et al. "Genome Sequence of Pseudomonas chlororaphis Lzh-T5, a Plant Growth-Promoting Rhizobacterium with Antimicrobial Activity." Genome Announcements 6, no. 18 (2018): e00328-18. http://dx.doi.org/10.1128/genomea.00328-18.

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ABSTRACT Pseudomonas chlororaphis Lzh-T5 is a plant growth-promoting rhizobacterium (PGPR) with antimicrobial activity isolated from tomato rhizosphere in the city of Dezhou, Shandong Province, China. Here, the draft genome sequence of P. chlororaphis Lzh-T5 is reported, and several functional genes related to antifungal antibiotics and siderophore biosynthesis have been found in the genome.

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Liu, Ying, Shengjie Yue, Muhammad Bilal, et al. "Development of Artificial Synthetic Pathway of Endophenazines in Pseudomonas chlororaphis P3." Biology 11, no. 3 (2022): 363. http://dx.doi.org/10.3390/biology11030363.

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Endophenazine A is a terpenoid phenazine with phenazine-1-carboxylic acid (PCA), and dimethylallyl diphosphate (DMAPP) derived from the 2-methyl-D-erythritol-4-phosphate (MEP) pathway as the precursor, which shows good antimicrobial activity against several Gram-positive bacteria and fungi. However, the highest yield of endophenazine A was about 20 mg/L in Streptomyces, limiting its large-scale industrial development. Pseudomonas chlororaphis P3, possessing an efficient PCA synthesis and MEP pathways, is a suitable chassis to synthesize endophenazine A. Herein, we designed an artificial biosyn

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Varbanets, L. D., E. L. Zdorovenko, E. A. Kiprianova, L. V. Avdeeva, O. S. Brovarskaya, and S. L. Rybalko. "Characterization of the lipipolysaccharides of Pseudomonas chlororaphis." Microbiology 84, no. 6 (2015): 781–90. http://dx.doi.org/10.1134/s0026261715060132.

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26

Avakova, Alina, Nikita Lyakhovchenko, Roman Lopin, Elizaveta Goltseva, Maria Belozerskikh, and Inna Solyanikova. "Antagonistic activity of the native strain of Pseudomonas chlororaphis 3 of the Belgorod region against the bacterium of the genus Ralstonia." BIO Web of Conferences 40 (2021): 01008. http://dx.doi.org/10.1051/bioconf/20214001008.

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The paper presents data on the evaluation of the antagonistic potential of Pseudomonas chlororaphis 3 and P. chlororaphis BS-1393 strains against the bacterium of the genus Ralstonia. It was revealed that the native strain is 30% more effective than the collection one. A scheme for obtaining an ethyl acetate extract of phenazine compounds, whose antibacterial activity exceeds the effectiveness of the extractant (ethyl acetate) by 57%, has been developed.

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Varbanets, L. D. "ANTIVIRAL ACTIVITY OF LIPOPOLYSACCHARIDES OF Pseudomonas chlororaphis subsp. aureofaciens." Biotechnologia Acta 10, no. 2 (2017): 34–39. http://dx.doi.org/10.15407/biotech10.02.034.

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Qalandarova, M., and T. Usanov. "Positive Effect of Pseudomonas Chlororaphis On Mung Bean Germination." European International Journal of Pedagogics 5, no. 5 (2025): 231–34. https://doi.org/10.55640/eijp-05-05-52.

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In this article, we can see that the bacterium Pseudomonas chlororaphis had a very positive effect on germination when exposed to two different varieties of mung bean plants using two different dilutions of this strain. We observed that the most effective results were obtained from the dilutions of the bacterial strain at 1:19 and 1:49, with the 1:19 dilution being the most effective.

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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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Bianco, N., S. Neshat, and K. Poole. "Conservation of the multidrug resistance efflux gene oprM in Pseudomonas aeruginosa." Antimicrobial Agents and Chemotherapy 41, no. 4 (1997): 853–56. http://dx.doi.org/10.1128/aac.41.4.853.

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An intragenic probe derived from the multidrug resistance gene oprM hybridized with genomic DNA from all 20 serotypes of Pseudomonas aeruginosa and from all 34 environmental and clinical isolates tested, indicating that the MexA-MexB-OprM multidrug efflux system is highly conserved in this organism. The oprM probe also hybridized with genomic DNA from Pseudomonas aureofaciens, Pseudomonas chlororaphis, Pseudomonas syringae, Burkholderia pseudomallei, and Pseudomonas putida, suggesting that efflux-mediated multidrug resistance mechanisms may be somewhat broadly distributed.

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Wang, Songwei, Dongliang Liu, Muhammad Bilal, Wei Wang, and Xuehong Zhang. "Uncovering the Role of PhzC as DAHP Synthase in Shikimate Pathway of Pseudomonas chlororaphis HT66." Biology 11, no. 1 (2022): 86. http://dx.doi.org/10.3390/biology11010086.

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DAHP synthase catalyzes the first step in the shikimate pathway, deriving the biosynthesis of aromatic amino acids (Trp, Phe and Tyr), phenazine-1-carboxamide, folic acid, and ubiquinone in Pseudomonas chlororaphis. In this study, we identified and characterized one DAHP synthase encoding gene phzC, which differs from the reported DAHP synthase encoding genes aroF, aroG and aroH in E. coli. PhzC accounts for approximately 90% of the total DAHP synthase activities in P. chlororaphis HT66 and plays the most critical role in four DAHP synthases in the shikimate pathway. Inactivation of phzC resul

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Bolwerk, Annouschka, Anastasia L. Lagopodi, André H. M. Wijfjes, et al. "Interactions in the Tomato Rhizosphere of Two Pseudomonas Biocontrol Strains with the Phytopathogenic Fungus Fusarium oxysporum f. sp. radicis-lycopersici." Molecular Plant-Microbe Interactions® 16, no. 11 (2003): 983–93. http://dx.doi.org/10.1094/mpmi.2003.16.11.983.

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The fungus Fusarium oxysporum f. sp. radicis-lycopersici causes foot and root rot of tomato plants, which can be controlled by the bacteria Pseudomonas fluorescens WCS365 and P. chlororaphis PCL1391. Induced systemic resistance is thought to be involved in biocontrol by P. fluorescens WCS365. The antifungal metabolite phenazine-1-carbox-amide (PCN), as well as efficient root colonization, are essential in the mechanism of biocontrol by P. chlororaphis PCL1391. To understand the effects of bacterial strains WCS365 and PCL1391 on the fungus in the tomato rhizosphere, microscopic analyses were pe

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Bello-González, Miguel Angel, Leidy Patricia Bedoya-Perez, Miguel Alberto Pantoja-Zepeda, and Jose Utrilla. "Development of SynBio Tools for Pseudomonas chlororaphis: A Versatile Non-Pathogenic Bacterium Host." SynBio 2, no. 2 (2024): 112–24. http://dx.doi.org/10.3390/synbio2020007.

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Pseudomonas chlororaphis ATCC 9446 is a non-pathogenic bacterium associated with the rhizosphere. It is commonly used as a biocontrol agent against agricultural pests. This organism can grow on a variety of carbon sources, has a robust secondary metabolism, and produces secondary metabolites with antimicrobial properties. This makes it an alternative host organism for synthetic biology applications. However, as a novel host there is a need for well-characterized molecular tools that allow fine control of gene expression and exploration of its metabolic potential. In this work we developed and

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Zhang, Y., W. G. D. Fernando, T. R. de Kievit, C. Berry, F. Daayf, and T. C. Paulitz. "Detection of antibiotic-related genes from bacterial biocontrol agents with polymerase chain reaction." Canadian Journal of Microbiology 52, no. 5 (2006): 476–81. http://dx.doi.org/10.1139/w05-152.

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Pseudomonas chlororaphis PA23, Pseudomonas spp. strain DF41, and Bacillus amyloliquefaciens BS6 consistently inhibit infection of canola petals by Sclerotinia sclerotiorum in both greenhouse and field experiments. Bacillus thuringiensis BS8, Bacillus cereus L, and Bacillus mycoides S have shown significant inhibition against S. sclerotiorum on plate assays. The presence of antibiotic biosynthetic or self-resistance genes in these strains was investigated with polymerase chain reaction and, in one case, Southern blotting. Thirty primers were used to amplify (i) antibiotic biosythetic genes enco

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Zdorovenko, Evelina L., Alexandra A. Kadykova, Liudmyla D. Varbanets, et al. "Structure of the O-specific polysaccharides of Pseudomonas chlororaphis subsp. chlororaphis UCM B-106." Carbohydrate Research 433 (October 2016): 1–4. http://dx.doi.org/10.1016/j.carres.2016.06.013.

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Snyder, William E., David W. Tonkyn, and Daniel A. Kluepfel. "Insect-Mediated Dispersal of the Rhizobacterium Pseudomonas chlororaphis." Phytopathology® 88, no. 12 (1998): 1248–54. http://dx.doi.org/10.1094/phyto.1998.88.12.1248.

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The southern corn rootworm, Diabrotica undecimpunctata subsp. howardi, a common and mobile insect pest, was shown to transmit the rhizobacte-rium Pseudomonas chlororaphis strain L11 between corn plants. Strain L11 has been genetically modified to contain the lacZY genes from Escherichia coli. It can reach high densities on roots and invade the roots and move into the foliage. D. undecimpunctata subsp. howardi became infested with L11 as larvae while feeding on roots of seed-inoculated corn and retained the bacteria through pupation, molting to the adult stage, and emergence from the soil. Bact

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Hann, Eugenia C., Amy Eisenberg, Susan K. Fager, et al. "5-Cyanovaleramide production using immobilized pseudomonas chlororaphis B23." Bioorganic & Medicinal Chemistry 7, no. 10 (1999): 2239–45. http://dx.doi.org/10.1016/s0968-0896(99)00157-1.

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Anderson, Anne J., and Young Cheol Kim. "Biopesticides produced by plant-probiotic Pseudomonas chlororaphis isolates." Crop Protection 105 (March 2018): 62–69. http://dx.doi.org/10.1016/j.cropro.2017.11.009.

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Potrawfke, Thomas, Kenneth Nigel Timmis, and Rolf-Michael Wittich. "Degradation of 1,2,3,4-Tetrachlorobenzene by Pseudomonas chlororaphis RW71." Applied and Environmental Microbiology 64, no. 10 (1998): 3798–806. http://dx.doi.org/10.1128/aem.64.10.3798-3806.1998.

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ABSTRACT Pseudomonas chlororaphis RW71 mineralized 1,2,3,4-tetrachlorobenzene, a highly recalcitrant pollutant hitherto not known to be degraded by pure cultures, as a sole source of carbon and energy, thereby releasing stoichiometric amounts of chloride. The transient excretion of tetrachlorocatechol in the early growth phase suggests an initial attack by a dioxygenase to form the corresponding dihydrodiol which rearomatizes to the catechol. The activity of chlorocatechol 1,2-dioxygenase in crude cell extracts was found to be extraordinarily high towards 3-chlorocatechol (ratio of 2.6 compare

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Calderón, Claudia E., Alejandro Pérez-García, Antonio de Vicente, and Francisco M. Cazorla. "The dar Genes of Pseudomonas chlororaphis PCL1606 Are Crucial for Biocontrol Activity via Production of the Antifungal Compound 2-Hexyl, 5-Propyl Resorcinol." Molecular Plant-Microbe Interactions® 26, no. 5 (2013): 554–65. http://dx.doi.org/10.1094/mpmi-01-13-0012-r.

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To determine the genetic basis by which 2-hexyl, 5-propyl resorcinol (HPR) is produced by the biocontrol rhizobacterium Pseudomonas chlororaphis (formerly known as P. fluorescens) PCL1606, the presence and role of dar genes were investigated. To accomplish this aim, the pCGNOV-1 plasmid was isolated from a PCL1606 genomic library and was shown to hybridize to various dar probes by Southern blot. An analysis of the pCGNOV-1 genomic DNA revealed the presence of five open reading frames that were homologous to dar genes and had an organization that resembled the arrangement of previously describe

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Zhao, Hui, Yinan Ma, Xiaogang Wu, and Liqun Zhang. "Pseudomonas viciae sp. nov., isolated from rhizosphere of broad bean." International Journal of Systematic and Evolutionary Microbiology 70, no. 9 (2020): 5012–18. http://dx.doi.org/10.1099/ijsem.0.004373.

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A Gram-stain-negative aerobic bacterium, strain 11K1T, was isolated from a rhizosphere soil of broad bean collected from Qujing, Yunnan, PR China and characterized by using polyphasic taxonomy. The bacterial cells of strain 11K1T were rod-shaped, motile by two polar flagella and positive for oxidase and catalase. Results of phylogenetic analysis based on 16S rRNA gene sequences revealed that the strain had the highest similarities to Pseudomonas thivervalensis DSM 13194T (99.52 %), Pseudomonas lini CFBP 5737T (99.45 %), Pseudomonas chlororaphis subsp. chlororaphi s NBRC 3904T (99.31 %), Pseudo

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Pradebon, Leonardo Cesar, Ivan Ricardo Carvalho, Jaqueline Piesanti Sangiovo, et al. "Biological insecticides efficient alternatives for the control of insect pests in agricultural and horticultural crops." DELOS: DESARROLLO LOCAL SOSTENIBLE 16, no. 49 (2023): 3512–36. http://dx.doi.org/10.55905/rdelosv16.n49-001.

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This work aimed to evaluate the agronomic effectiveness and practicality of microbiological insecticides in cotton, sugar cane, citrus, beans, tomatoes, coffee, wheat, soybeans and maize crops based on bacteria of the genus Pseudomonas fluorescens Pseudomonas chlororaphis and Bacillus thuringiensis, in the control of insect pests. Experiments were carried out to evaluate biological insecticides in each crop individually. Experiments were carried out in each culture in various environments in the states of MT, MS, SP, MG and PR in Brazil. A randomized block design with four replications was use

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Cho, Song Mi, Beom Ryong Kang, Song Hee Han, et al. "2R,3R-Butanediol, a Bacterial Volatile Produced by Pseudomonas chlororaphis O6, Is Involved in Induction of Systemic Tolerance to Drought in Arabidopsis thaliana." Molecular Plant-Microbe Interactions® 21, no. 8 (2008): 1067–75. http://dx.doi.org/10.1094/mpmi-21-8-1067.

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Root colonization of plants with certain rhizobacteria, such as Pseudomonas chlororaphis O6, induces tolerance to biotic and abiotic stresses. Tolerance to drought was correlated with reduced water loss in P. chlororaphis O6-colonized plants and with stomatal closure, indicated by size of stomatal aperture and percentage of closed stomata. Stomatal closure and drought resistance were mediated by production of 2R,3R-butanediol, a volatile metabolite of P. chlororaphis O6. Root colonization with bacteria deficient in 2R,3R-butanediol production showed no induction of drought tolerance. Studies w

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Starovic, Mira, Danijela Ristic, Snezana Pavlovic, Mehmet Mozkan, and Dragana Josic. "Antifungal activity of plant essential oils and Pseudomonas chlororaphis strains against Cercospora beticola Sacc." Zbornik Matice srpske za prirodne nauke, no. 140 (2021): 9–19. http://dx.doi.org/10.2298/zmspn2140009s.

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Leaf spot disease caused by Cercospora beticola Sacc. is the most destructive foliar disease of beet. Cercospora leaf spot is controlled primarily by fungicides because the non-chemical alternatives do not provide commercially viable control. One of the ways of reducing chemical application is the use of different essential oils (EOs) or antagonistic plant growth-promoting rhizobacteria (PGPB). This study evaluates several EOs and PGPB belonging to Pseudomonas chlororaphis as possible control agents of this pathogen. Antifungal properties were determined by in vitro microdilution method agains

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Zdravkovic, Jasmina, Milan Ugrinovic, Milan Zdravkovic, Slavisa Djordjevic, Snezana Pavlovic, and Dragana Josic. "In vitro and in vivo effects of Pseudomonas spp. and Bacillus sp. on Fusarium acuminatum, Botrytis cinerea and Aspergillus niger infecting Cucumber." Pesticidi i fitomedicina 30, no. 3 (2015): 169–78. http://dx.doi.org/10.2298/pif1503169z.

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Cucumber (Cucumis sativus L) is an important member of the Cucurbitaceae family. Production of healthy nursery is necessary for high-quality production of this crop in greenhouses and in fields. With the idea of minimizing the use of pesticides and mineral fertilizers to preserve soil quality, we investigated the effects of plant growth promoting bacteria (PGPB) on growth promotion and protection of cucumber plants from phytopathogenic fungi. The effects of Pseudomonas spp. strains with different antifungal activities and Bacillus sp. Q10 strain with PGP activity were tested on cucumber plants

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Hu, Weiqun, Qixun Gao, Mohamed Sobhy Hamada, et al. "Potential of Pseudomonas chlororaphis subsp. aurantiaca Strain Pcho10 as a Biocontrol Agent Against Fusarium graminearum." Phytopathology® 104, no. 12 (2014): 1289–97. http://dx.doi.org/10.1094/phyto-02-14-0049-r.

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To develop an effective biocontrol strategy for management of Fusarium head blight on wheat caused by Fusarium graminearum, the bacterial biocontrol agent Pcho10 was selected from more than 1,476 wheat-head-associated bacterial strains according to its antagonistic activity in vitro. This strain was subsequently characterized as Pseudomonas chlororaphis subsp. aurantiaca based on 16S ribosomal DNA sequence analysis, assays of the BIOLOG microbial identification system, and unique pigment production. The major antifungal metabolite produced by Pcho10 was further identified as phenazine-1-carbox

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Kim, Ji Soo, Yong Hwan Kim, Ju Yeon Park, Anne J. Anderson, and Young Cheol Kim. "The global regulator GacS regulates biofilm formation in Pseudomonas chlororaphis O6 differently with carbon source." Canadian Journal of Microbiology 60, no. 3 (2014): 133–38. http://dx.doi.org/10.1139/cjm-2013-0736.

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An aggressive root colonizer, Pseudomonas chlororaphis O6 produces various secondary metabolites that impact plant health. The sensor kinase GacS is a key regulator of the expression of biocontrol-related traits. Biofilm formation is one such trait because of its role in root surface colonization. This paper focuses on the effects of carbon source on biofilm formation. In comparison with the wild type, a gacS mutant formed biofilms at a reduced level with sucrose as the major carbon source but at much higher level with mannitol in the defined medium. Biofilm formation by the gacS mutant occurr

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Palumbo, Jeffrey D., Teresa L. O'Keeffe, Ali Kattan, Hamed K. Abbas, and Bobbie J. Johnson. "Inhibition of Aspergillus flavus in Soil by Antagonistic Pseudomonas Strains Reduces the Potential for Airborne Spore Dispersal." Phytopathology® 100, no. 6 (2010): 532–38. http://dx.doi.org/10.1094/phyto-100-6-0532.

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Pseudomonas chlororaphis strain JP1015 and P. fluorescens strain JP2175 were previously isolated from Mississippi cornfield soil samples and selected for their growth inhibition of Aspergillus flavus in laboratory culture. In this study, the antifungal activity of these bacterial strains against A. flavus in soil coculture was determined. Growth of A. flavus was inhibited up to 100-fold by P. chlororaphis strain JP1015 and up to 58-fold by P. fluorescens strain JP2175 within 3 days following soil coinoculation. A. flavus propagule densities after 16 days remained 7- to 20-fold lower in soil tr

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Wang, Dongping, Robert J. Dorosky, Cliff S. Han, et al. "Adaptation Genomics of a Small-Colony Variant in a Pseudomonas chlororaphis 30-84 Biofilm." Applied and Environmental Microbiology 81, no. 3 (2014): 890–99. http://dx.doi.org/10.1128/aem.02617-14.

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ABSTRACTThe rhizosphere-colonizing bacteriumPseudomonas chlororaphis30-84 is an effective biological control agent against take-all disease of wheat. In this study, we characterize a small-colony variant (SCV) isolated from aP. chlororaphis30-84 biofilm. The SCV exhibited pleiotropic phenotypes, including small cell size, slow growth and motility, low levels of phenazine production, and increased biofilm formation and resistance to antimicrobials. To better understand the genetic alterations underlying these phenotypes, RNA and whole-genome sequencing analyses were conducted comparing an SCV t

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Lee, Seungjun, Ruisheng An, Parwinder Grewal, Zhongtang Yu, Zuzana Borherova, and Jiyoung Lee. "High-Performing Windowfarm Hydroponic System: Transcriptomes of Fresh Produce and Microbial Communities in Response to Beneficial Bacterial Treatment." Molecular Plant-Microbe Interactions® 29, no. 12 (2016): 965–76. http://dx.doi.org/10.1094/mpmi-08-16-0162-r.

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Beneficial microorganisms play an important role in enhancing plant health, especially by promoting resistance to plant pathogen infection. The purpose of this study was to gain an understanding of such protection by i) examining the responses of fresh produce (lettuce) to beneficial treatments in their transcriptomes, ii) comparing biological (bacteria, fungi, and oomycete) communities and their diversity when treated with Pseudomonas chlororaphis (beneficial bacterium) in windowfarm hydroponic systems, and iii) identifying the microorganisms in root areas and water. P. chlororaphis treatment

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