Christoph Keel

Publications | Mémoires et thèses

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143 publications

2019 | 2018 | 2017 | 2016 | 2015 | 2014 | 2013 | 2012 | 2011 | 2010 | 2009 | 2008 | 2007 | 2006 | 2005 | 2004 | 2003 | 2002 | 2001 | 2000 | 1999 | 1998 | 1997 | 1996 | 1995 | 1994 | 1992 | 1991 | 1990 | 1989 |
Persistence of root-colonizing Pseudomonas protegens in herbivorous insects throughout different developmental stages and dispersal to new host plants.
Flury P., Vesga P., Dominguez-Ferreras A., Tinguely C., Ullrich C.I., Kleespies R.G., Keel C., Maurhofer M., 2019/04. The ISME journal, 13 (4) pp. 860-872. Peer-reviewed.
Protecting maize from rootworm damage with the combined application of arbuscular mycorrhizal fungi, Pseudomonas bacteria and entomopathogenic nematodes.
Jaffuel G., Imperiali N., Shelby K., Campos-Herrera R., Geisert R., Maurhofer M., Loper J., Keel C., Turlings TCJ, Hibbard B.E., 2019/02/28. Scientific reports, 9 (1) p. 3127. Peer-reviewed.
 
T6SS contributes to gut microbiome invasion and killing of an herbivorous pest insect by plant-beneficial Pseudomonas protegens.
Vacheron J., Péchy-Tarr M., Brochet S., Heiman C.M., Stojiljkovic M., Maurhofer M., Keel C., 2019. The ISME Journal, 13 (5) pp. 1318-1329. Peer-reviewed.
Conservation tillage and organic farming induce minor variations in Pseudomonas abundance, their antimicrobial function and soil disease resistance.
Dennert F., Imperiali N., Staub C., Schneider J., Laessle T., Zhang T., Wittwer R., van der Heijden MGA, Smits THM, Schlaeppi K. et al., 2018/08/01. FEMS microbiology ecology, 94 (8) p. 1. Peer-reviewed.
Genome Sequence of the Pseudomonas protegens Phage ΦGP100.
Vacheron J., Kupferschmied P., Resch G., Keel C., 2018. Genome Announcements, 6 (25) pp. e00261-18. Peer-reviewed.
Root-colonizing bacteria enhance the levels of (E)-β-caryophyllene produced by maize roots in response to rootworm feeding.
Chiriboga M X., Guo H., Campos-Herrera R., Röder G., Imperiali N., Keel C., Maurhofer M., Turlings TCJ, 2018. Oecologia, 187 (2) pp. 459-468. Peer-reviewed.
Antimicrobial and Insecticidal: Cyclic Lipopeptides and Hydrogen Cyanide Produced by Plant-Beneficial Pseudomonas Strains CHA0, CMR12a, and PCL1391 Contribute to Insect Killing.
Flury P., Vesga P., Péchy-Tarr M., Aellen N., Dennert F., Hofer N., Kupferschmied K.P., Kupferschmied P., Metla Z., Ma Z. et al., 2017. Frontiers in microbiology, 8 p. 100. Peer-reviewed.
Combined Field Inoculations of Pseudomonas Bacteria, Arbuscular Mycorrhizal Fungi, and Entomopathogenic Nematodes and their Effects on Wheat Performance
Imperiali N., Chiriboga X., Schlaeppi K., Fesselet M., Villacrés D., Jaffuel G., Bender S.F., Dennert F., Blanco-Pérez R., van der Heijden M.G.A. et al., 2017. Frontiers in Plant Science, 8 p. 1809. Peer-reviewed.
Relationships between Root Pathogen Resistance, Abundance and Expression of Pseudomonas Antimicrobial Genes, and Soil Properties in Representative Swiss Agricultural Soils
Imperiali N., Dennert F., Schneider J., Laessle T., Velatta C., Fesselet M., Wyler M., Mascher F., Mavrodi O., Mavrodi D. et al., 2017. Frontiers in Plant Science, 8 p. 427. Peer-reviewed.
Specific surface glycan decorations enable antimicrobial peptide resistance in plant-beneficial pseudomonads with insect-pathogenic properties.
Kupferschmied P., Chai T., Flury P., Blom J., Smits T.H., Maurhofer M., Keel C., 2016/11. Environmental microbiology, 18 (11) pp. 4265-4281. Peer-reviewed.
A look into the toolbox of multi-talents: insect pathogenicity determinants of plant-beneficial pseudomonads.
Keel C., 2016/10. Environmental microbiology, 18 (10) pp. 3207-3209. Peer-reviewed.
Interspecific cooperation: enhanced growth, attachment and strain-specific distribution in biofilms through Azospirillum brasilense-Pseudomonas protegens co-cultivation.
Pagnussat L.A., Salcedo F., Maroniche G., Keel C., Valverde C., Creus C.M., 2016/10. FEMS microbiology letters, 363 (20) pp. fnw238. Peer-reviewed.
 
Abundance of plant beneficial pseudomonads in the rhizosphere of winter wheat grown in different agricultural management systems
Dennert F., Schneider J., Imperiali N., Mavrodi D., Mavrodi O., 2016/09/12., International Organisation for Biological Control of noxious animals and plants (IOBC) pp. 144-148 dans Köhl Jürgen, Bardin Marc (eds.) IOBC-WPRS Bulletin, IOBC-WPRS.
 
Die Bodenbiologie bringt Landwirte und Wissenschaftler zusammen
Marie Fesselet, Jacques Dugon, Thomas Degen, Francesca Dennert, Klaus Schläppi, Geoffrey Jaffuel, Xavier Chiriboga, Monika Maurhofer, Raquel Campos Herrera, Nicola Imperiali et al., 2016/03. Agrarforschung Schweiz, 7 (3) pp. 156-159.
Heavy metal tolerant Pseudomonas protegens isolates from agricultural well water in northeastern Algeria with plant growth promoting, insecticidal and antifungal activities
Bensidhoum L., Nabti E., Tabli N., Kupferschmied P., Weiss A., Rothballer M., Schmid M., Keel C., Hartmann A., 2016. European Journal of Soil Biology, 75 pp. 38-46. Peer-reviewed.
Insect pathogenicity in plant-beneficial pseudomonads: phylogenetic distribution and comparative genomics.
Flury P., Aellen N., Ruffner B., Péchy-Tarr M., Fataar S., Metla Z., Dominguez-Ferreras A., Bloemberg G., Frey J., Goesmann A. et al., 2016. The ISME Journal, 10 (10) pp. 2527-2542. Peer-reviewed.
 
La biologie du sol passionne et réunit agriculteurs et scientifiques
Fesselet Marie, Dugon Jacques, Degen Thomas, Dennert Francesca, Schläppi Klaus, Jaffuel Geoffrey, Chiriboga Xavier, Maurhofer Monika, Campos Herrera Raquel, Imperiali Nicola et al., 2016. Recherche Agronomique Suisse, 7 (3) pp. 156-159.
Signaling in the Rhizosphere.
Venturi V., Keel C., 2016. Trends in Plant Science, 21 (3) pp. 187-198. Peer-reviewed.
Evolutionary patchwork of an insecticidal toxin shared between plant-associated pseudomonads and the insect pathogens Photorhabdus and Xenorhabdus.
Ruffner B., Péchy-Tarr M., Höfte M., Bloemberg G., Grunder J., Keel C., Maurhofer M., 2015. Bmc Genomics, 16 (1) p. 609. Peer-reviewed.
Domain shuffling in a sensor protein contributed to the evolution of insect pathogenicity in plant-beneficial Pseudomonas protegens.
Kupferschmied P., Péchy-Tarr M., Imperiali N., Maurhofer M., Keel C., 2014. PLoS Pathogens, 10 (2) pp. e1003964. Peer-reviewed.
Full-genome sequence of the plant growth-promoting bacterium Pseudomonas protegens CHA0.
Jousset A., Schuldes J., Keel C., Maurhofer M., Daniel R., Scheu S., Thuermer A., 2014. Genome Announcements, 2 (2) pp. e00322-14.
 
Insecticidal activity of plant root-associated bacteria
Kupferschmied P., Keel C., 2014. pp. 52-58 dans Bertrand C. (eds.) Natural products and biocontrol : les médiateurs chimiques naturels impliqués dans les mécanismes de protection des cultures, Presses Universitaires de Perpignan.
 
Control and host-dependent activation of insect toxin expression in a root-associated biocontrol pseudomonad.
Péchy-Tarr M., Borel N., Kupferschmied P., Turner V., Binggeli O., Radovanovic D., Maurhofer M., Keel C., 2013. Environmental Microbiology, 15 (3) pp. 736-750.
Does wheat genetically modified for disease resistance affect root-colonizing pseudomonads and arbuscular mycorrhizal fungi?
Meyer J.B., Song-Wilson Y., Foetzki A., Luginbühl C., Winzeler M., Kneubühler Y., Matasci C., Mascher-Frutschi F., Kalinina O., Boller T. et al., 2013. PLoS One, 8 (1) pp. e53825.
 
Oral insecticidal activity of plant-associated pseudomonads.
Ruffner B., Péchy-Tarr M., Ryffel F., Hoegger P., Obrist C., Rindlisbacher A., Keel C., Maurhofer M., 2013. Environmental Microbiology, 15 (3) pp. 751-763.
Promise for plant pest control: root-associated pseudomonads with insecticidal activities.
Kupferschmied P., Maurhofer M., Keel C., 2013. Frontiers in Plant Science, 4 p. 287.
 
Persistence of a biocontrol Pseudomonas inoculant as high populations of culturable and non-culturable cells in 200-cm-deep soil profiles
Troxler J., Svercel M., Natsch A., Zala M., Keel C., Moënne-Loccoz Y., Défago G., 2012. Soil Biology and Biochemistry, 44 (1) pp. 122-129.
 
Bacterial subfamily of LuxR regulators that respond to plant compounds.
Subramoni S., Gonzalez J.F., Johnson A., Péchy-Tarr M., Rochat L., Paulsen I., Loper J.E., Keel C., Venturi V., 2011. Applied and Environmental Microbiology, 77 (13) pp. 4579-4588.
 
Essais en plein champ avec du blé génétiquement modifié résistant à l'oïdium = Freilandversuche mit gentechnisch verändertem Weizen mit Mehltauresistenz = Field trials with genetically modified powdery mildew-resistant wheat
Foetzki A., Winzeler M., Boller T., Felber F., Gruissem G., Keel C., Keller B., Mascher F., Maurhofer M., Nentwig W. et al., 2011. Recherche Agronomique Suisse, 2 (10) pp. 446-453.
 
Oral insecticidal activity of root colonizing Pseudomonas fluorescens CHA0: a biocontrol agent with potential to control plant pests and diseases
Maurhofer M., Ruffner B., Péchy-Tarr M., Rindlisbacher A., Obrist C., Hoegger P., Keel C., 2011. pp. 67-70 dans Ehlers R.U., Crickmore N., Enkerli J., Glazer I., Kirchmair M., Lopez-Ferber M., Neuhauser S., Strasser H., Tkaczuk C., Traugott M. (eds.) Biological Control in IPM Systems, IOBC wprs bulletin. Peer-reviewed, INRA / Unité de pathologie végétale.
 
Phylogenetic position of Fit insect toxin producing pseudomonads
Ruffner B, Péchy-Tarr M, Ryffel F, Keel C, Maurhofer M, 2011. pp. 71-74 dans Ehlers R.U., Crickmore N., Enkerli J., Glazer I., Kirchmair M., Lopez-Ferber M., Neuhauser S., Strasser H., Tkaczuk C., Traugott M. (eds.) Biological Control in IPM Systems, IOBC wprs bulletin. Peer-reviewed, INRA / Unité de pathologie végétale.
 
Plant- and microbe-derived compounds affect the expression of genes encoding antifungal compounds in a pseudomonad with biocontrol activity.
de Werra P., Huser A., Tabacchi R., Keel C., Maurhofer M., 2011. Applied and Environmental Microbiology, 77 (8) pp. 2807-2812.
 
Plants respond to pathogen infection by enhancing the antifungal gene expression of root-associated bacteria.
Jousset A., Rochat L., Lanoue A., Bonkowski M., Keel C., Scheu S., 2011. Molecular Plant-Microbe Interactions, 24 (3) pp. 352-358.
 
Pyrroloquinoline quinone biosynthesis gene pqqC, a novel molecular marker for studying the phylogeny and diversity of phosphate-solubilizing pseudomonads.
Meyer J.B., Frapolli M., Keel C., Maurhofer M., 2011. Applied and Environmental Microbiology, 77 (20) pp. 7345-7354.
 
Association of hemolytic activity of Pseudomonas entomophila, a versatile soil bacterium, with cyclic lipopeptide production.
Vallet-Gely I., Novikov A., Augusto L., Liehl P., Bolbach G., Péchy-Tarr M., Cosson P., Keel C., Caroff M., Lemaitre B., 2010. Applied and environmental microbiology, 76 (3) pp. 910-921. Peer-reviewed.
 
Characterisation of microbial communities colonising the hyphal surfaces of arbuscular mycorrhizal fungi.
Scheublin T.R., Sanders I.R., Keel C., van der Meer J.R., 2010. ISME Journal, 4 (6) pp. 752-763.
 
Combination of fluorescent reporters for simultaneous monitoring of root colonization and antifungal gene expression by a biocontrol pseudomonad on cereals with flow cytometry.
Rochat L., Péchy-Tarr M., Baehler E., Maurhofer M., Keel C., 2010. Molecular Plant-Microbe Interactions, 23 (7) pp. 949-961.
 
Combined use of fluorescent reporters and flow cytometry for simultaneous monitoring of bacterial growth and gene expression on plant roots
Rochat L., Péchy-Tarr M, Maurhofer M., Keel C., 2010. pp. 3461-3470 dans Timmis K. N. (eds.) Handbook of hydrocarbon and lipid microbiology chap. 7, Springer.
 
Interplay between wheat cultivars, biocontrol pseudomonads, and soil.
Meyer J.B., Lutz M.P., Frapolli M., Péchy-Tarr M., Rochat L., Keel C., Défago G., Maurhofer M., 2010. Applied and Environmental Microbiology, 76 (18) pp. 6196-6204.
 
Predator-prey chemical warfare determines the expression of biocontrol genes by rhizosphere-associated Pseudomonas fluorescens.
Jousset A., Rochat L., Scheu S., Bonkowski M., Keel C., 2010. Applied and Environmental Microbiology, 76 (15) pp. 5263-5268. Peer-reviewed.
 
Functional GacS in Pseudomonas DSS73 prevents digestion by Caenorhabditis elegans and protects the nematode from killer flagellates.
Bjørnlund L., Rønn R., Péchy-Tarr M., Maurhofer M., Keel C., Nybroe O., 2009. The ISME journal, 3 (7) pp. 770-779. Peer-reviewed.
 
Genotype-level interactions determine the degree of reduction of leaf rust on wheat by seed application of beneficial Pseudomonas spp.
Sharifi-Tehrani A., Kellenberger S., Farzaneh M., Pechy-Tarr M., Keel C., Mascher F., 2009. IOBC/WPRS Bulletin, 43 pp. 321-325.
 
Insecticidal activity in root-associated pseudomonads
Péchy-Tarr M., Loper J. E., Maurhofer M., Keel C., 2009., IOBC/WPRS p. 166 dans Elad Y. (eds.) IOBC/WPRS Bulletin, IOBC/WPRS.
 
Insecticidal activity in root-associated, plant-beneficial pseudomonads
Keel C., Maurhofer M., 2009., IOBC/WPRS p. 181 dans Ehlers R.U. (eds.) IOBC/WPRS Bulletin, IOBC/WPRS.
 
Molecular characterization of IAA-responsive mutants of plant-beneficial Pseudomonas fluorescens CHA0
Rochat L., Péchy-Tarr M., de Werra P., Maurhofer M., Keel C., 2009., IOBC/WPRS p. 67 dans Elad Y (eds.) IOBC/WPRS.
 
Molecular Tools for Understanding and Improving Biocontrol
Yigal Elad Y., Maurhofer M., Keel C., Gessler C., Duffy B. (eds.), 2009., 43 390, IOBC/WPRS.
 
Molecular tools to analyze the influence of environmental factors on the genetic diversity and the plant-beneficial activity of root-colonizing pseudomonads
Meyer J., de Werra P., Frapolli M., Péchy-Tarr M., Rochat L., Keel C., Maurhofer M., 2009., IOBC/WPRS p. 336 dans Elad Y, Maurhofer M., Keel C., Gessler C., Duffy B. (eds.) IOBC/WPRS Bulletin, IOBC/WPRS.
 
Occurrence and molecular diversity of the Fit insect toxin locus in plant-beneficial pseudomonads
Ruffner B., Péchy-Tarr M., Keel C., Maurhofer M., 2009. IOBC/WPRS Bulletin, 45 pp. 251-254.
 
Predators promote defence of rhizosphere bacterial populations by selective feeding on non-toxic cheaters.
Jousset A., Rochat L., Péchy-Tarr M., Keel C., Scheu S., Bonkowski M., 2009. The ISME Journal, 3 (6) pp. 666-674. Peer-reviewed.
 
Regulation of the expression of Fit insect toxin locus genes in the root-associated biocontrol pseudomonad CHA0
Péchy-Tarr M., Binggeli O., Maurhofer M., Keel C., 2009. IOBC/WPRS Bulletin, 45 pp. 243-247.
 
Regulation of the Fit locus encoding a novel insect toxin in the root-associated Pseudomonas fluorescens biocontrol agent CHA0
Péchy-Tarr M, Maurhofer M., Keel C., 2009., IOBC/WPRS p. 171 dans Elad Y. (eds.) IOBC/WPRS Bulletin.
 
Role of gluconic acid production in phosphate solubilisation, biocontrol ability and rhizosphere competence of Pseudomonas fluorescens CHA0
de Werra P., Péchy-Tarr M., Rochat L., Keel C., Maurhofer M., 2009., IOBC/WPRS p. 163 dans Elad Y., Maurhofer M., Keel C., Gessler C., Duffy B. (eds.) IOBC/WPRS Bulletin, IOBC/WPRS.
 
Role of gluconic acid production in the regulation of biocontrol traits of Pseudomonas fluorescens CHA0.
de Werra P., Péchy-Tarr M., Keel C., Maurhofer M., 2009. Applied and Environmental Microbiology, 75 (12) pp. 4162-4174. Peer-reviewed.
 
Small RNA-dependent expression of secondary metabolism is controlled by Krebs cycle function in Pseudomonas fluorescens.
Takeuchi K., Kiefer P., Reimmann C., Keel C., Dubuis C., Rolli J., Vorholt J.A., Haas D., 2009. The Journal of biological chemistry, 284 (50) pp. 34976-34985. Peer-reviewed.
 
Use of DGGE analysis to study the impact of genetically modified wheat on the genetic diversity of root-colonizing pseudomonads associated with soil fertility
Meyer J., Keel C., Maurhofer M., 2009., IOBC/WPRS p. 370 dans Elad Y., Maurhofer M., Keel C., Gessler C., Duffy B. (eds.) IOBC/WPRS Bulletin, IOBC/WPRS.
 
Detection of plant-modulated alterations in antifungal gene expression in Pseudomonas fluorescens CHA0 on roots by flow cytometry.
de Werra P., Baehler E., Huser A., Keel C., Maurhofer M., 2008. Applied and Environmental Microbiology, 74 (5) pp. 1339-1349.
 
Genomic analysis of secondary metabolite production by Pseudomonas fluorescens Pf-5
Loper J. E., Bruck D., Péchy-Tarr M., Maurhofer M., Keel C., Gross H., 2008. pp. 1-6 dans Lorito M., Woo S., Scala S. (eds.) Biology of Molecular Plant-Microbe Interactions, APS Press.
 
Genomics of secondary metabolite production by Pseudomonas fluorescens Pf-5
Loper J.E., Paulsen I., Bruck D., Péchy-Tarr M., Maurhofer M., Keel C., Gross H., 2008. pp. S94 dans 100th Annual Meeting of the American-Phytopathological-Society Minneapolis, MN, JUL 26-30, 2008, Phytopathology. Peer-reviewed, American Phytopathological Society.
 
Insecticidal activity found in plant-beneficial Pseudomonas and in Photorhabdus/Xenorhabdus
Grunder J., Fischer E., Péchy-Tarr M., Maurhofer M., Keel C., 2008., Proceedings of the Meeting at Alés (France), 3-7 June, 2007 p. 106 dans Ehlers R.U., Enkerli J., Glazer I., López-Ferber M., Tkaczuk C. (eds.) IOBC/WPRS Bulletins Working Group "Insect Pathogens and Insect Parasitic Nematodes", IOBC/WPRS.
 
Molecular analysis of a novel gene cluster encoding an insect toxin in plant-associated strains of Pseudomonas fluorescens
Pechy-Tarr M., Bruck D. J., Maurhofer M., Fischer E., Vogne C., Henkels M. D., Donahue K. M., Grunder J., Loper J. E., Keel C., 2008. Environmental Microbiology, 10 (9) pp. 2368-2386. Peer-reviewed.
 
Plant-beneficial pseudomonad with insecticidal activity
Péchy-Tarr M., Fischer E., Maurhofer M., Grunder J., Keel C., 2008., Proceedings of the Meeting at Alés (France), 3-7 June, 2007 p. 105 dans Ehlers R.U., Enkerli J., Glazer I., López-Ferber M., Tkaczuk C. (eds.) IOBC/WPRS Bulletins Working Group "Insect Pathogens and Insect Parasitic Nematodes", IOBC/WPRS.
 
Dialogues of root-colonizing biocontrol pseudomonads
Dubuis C., Keel C., Haas D., 2007. European Journal of Plant Pathology, 119 (3) pp. 311-328. Peer-reviewed.
 
Is the ability of biocontrol fluorescent pseudomonads to produce the antifungal metabolite 2,4-diacetylphloroglucinol really synonymous with higher plant protection?
Rezzonico F., Zala M., Keel C., Duffy B., Moënne-Loccoz Y., Défago G., 2007. New Phytologist, 173 (4) pp. 861-872.
 
Characterization of PhlG, a hydrolase that specifically degrades the antifungal compound 2,4-diacetylphloroglucinol in the biocontrol agent Pseudomonas fluorescens CHA0.
Bottiglieri M., Keel C., 2006. Applied and Environmental Microbiology, 72 (1) pp. 418-427.
 
Two novel MvaT-like global regulators control exoproduct formation and biocontrol activity in root-associated Pseudomonas fluorescens CHA0.
Baehler E., de Werra P., Wick L.Y., Péchy-Tarr M., Mathys S., Maurhofer M., Keel C., 2006. Molecular Plant-Microbe Interactions, 19 (3) pp. 313-329.
 
Using flow cytometry for in situ monitoring of antimicrobial compound production in the biocontrol bacterium Pseudomonas fluorescens CHA0
de Werra P., Huser A., Baehler E., Keel C., Maurhofer M., 2006. pp. 117-121 dans Raaijmakers J.M., Sikora R.A. (eds.) IOBC/WPRS Bulletin, IOBC/WPRS Bulletin.
 
RpoN (sigma54) controls production of antifungal compounds and biocontrol activity in Pseudomonas fluorescens CHA0.
Péchy-Tarr M., Bottiglieri M., Mathys S., Lejbølle K.B., Schnider-Keel U., Maurhofer M., Keel C., 2005. Molecular Plant-Microbe Interactions, 18 (3) pp. 260-272.
 
Taking the fungal highway: mobilization of pollutant-degrading bacteria by fungi.
Kohlmeier S., Smits T.H., Ford R.M., Keel C., Harms H., Wick L.Y., 2005. Environmental Science and Technology, 39 (12) pp. 4640-4646.
 
Use of green fluorescent protein-based reporters to monitor balanced production of antifungal compounds in the biocontrol agent Pseudomonas fluorescens CHA0.
Baehler E., Bottiglieri M., Péchy-Tarr M., Maurhofer M., Keel C., 2005. Journal of Applied Microbiology, 99 (1) pp. 24-38.
 
Using flow cytometry for in situ monitoring of antimicrobial compound production in the biocontrol bacterium Pseudomonas fluorescens CHA0.
de Werra P, Huser A, Baehler E, Keel C, Maurhofer M, 2005. IOBC/WPRS Bulletin, 29 (2) pp. 117-122.
 
Cross talk between 2,4-diacetylphloroglucinol-producing biocontrol pseudomonads on wheat roots.
Maurhofer M., Baehler E., Notz R., Martinez V., Keel C., 2004. Applied and Environmental Microbiology, 70 (4) pp. 1990-1998.
 
Potential role of pathogen signaling in multitrophic plant-microbe interactions involved in disease protection.
Duffy B., Keel C., Défago G., 2004. Applied and Environmental Microbiology, 70 (3) pp. 1836-1842.
 
Characterization of the surface hydrophobicity of filamentous fungi.
Smits T.H., Wick L.Y., Harms H., Keel C., 2003. Environmental Microbiology, 5 (2) pp. 85-91.
 
GacS sensor domains pertinent to the regulation of exoproduct formation and to the biocontrol potential of Pseudomonas fluorescens CHA0.
Zuber S., Carruthers F., Keel C., Mattart A., Blumer C., Pessi G., Gigot-Bonnefoy C., Schnider-Keel U., Heeb S., Reimmann C. et al., 2003. Molecular Plant-Microbe Interactions, 16 (7) pp. 634-644.
 
Regulation of antibiotic production in root-colonizing Peudomonas spp. and relevance for biological control of plant disease.
Haas D., Keel C., 2003. Annual Review of Phytopathology, 41 pp. 117-153.
 
RsmY, a small regulatory RNA, is required in concert with RsmZ for GacA-dependent expression of biocontrol traits in Pseudomonas fluorescens CHA0.
Valverde C., Heeb S., Keel C., Haas D., 2003. Molecular Microbiology, 50 (4) pp. 1361-1379.
 
Deleterious impact of a virulent bacteriophage on survival and biocontrol activity of Pseudomonas fluorescens strain CHAO in natural soil.
Keel C., Ucurum Z., Michaux P., Adrian M., Haas D., 2002. Molecular Plant-microbe Interactions, 15 (6) pp. 567-576.
 
Einsatz von Bodenbakterien für den Pflanzenschutz
Keel C., 2002. VBB-Bulletin, 6 pp. 16-19.
 
Genetically programmed autoinducer destruction reduces virulence gene expression and swarming motility in Pseudomonas aeruginosa PAO1.
Reimmann C., Ginet N., Michel L., Keel C., Michaux P., Krishnapillai V., Zala M., Heurlier K., Triandafillu K., Harms H. et al., 2002. Microbiology, 148 (Pt 4) pp. 923-932.
 
Impact of biocontrol strain Pseudomonas fluorescens CHA0 on rhizosphere bacteria isolated from barley (Hordeum vulgare L.) with special reference to Cytophaga-like bacteria.
Johansen J.E., Binnerup S.J., Lejbølle K.B., Mascher F., Sørensen J., Keel C., 2002. Journal of Applied Microbiology, 93 (6) pp. 1065-1074.
 
Inactivation of the regulatory gene algU or gacA can affect the ability of biocontrol Pseudomonas fluorescens CHA0 to persist as culturable cells in nonsterile soil.
Mascher F., Moënne-Loccoz Y., Schnider-Keel U., Keel C., Haas D., Défago G., 2002. Applied and Environmental Microbiology, 68 (4) pp. 2085-2088.
 
Signal transduction in plant-beneficial rhizobacteria with biocontrol properties.
Haas D., Keel C., Reimmann C., 2002. Antonie Van Leeuwenhoek, 81 (1-4) pp. 385-395.
 
Characterization of spontaneous gacS and gacA regulatory mutants of Pseudomonas fluorescens biocontrol strain CHAO.
Bull C.T., Duffy B., Voisard C., Défago G., Keel C., Haas D., 2001/09. Antonie van Leeuwenhoek, 79 (3-4) pp. 327-336. Peer-reviewed.
 
Characterization of spontaneous gacS and gacA regulatory mutants of Pseudomonas fluorescens biocontrol strain CHAO.
Bull C.T., Duffy B., Voisard C., Défago G., Keel C., Haas D., 2001. Antonie Van Leeuwenhoek, 79 (3-4) pp. 327-336.
 
The sigma factor AlgU (AlgT) controls exopolysaccharide production and tolerance towards desiccation and osmotic stress in the biocontrol agent Pseudomonas fluorescens CHA0.
Schnider-Keel U., Lejbølle K.B., Baehler E., Haas D., Keel C., 2001. Applied and Environmental Microbiology, 67 (12) pp. 5683-5693.
 
Autoinduction of 2,4-diacetylphloroglucinol biosynthesis in the biocontrol agent Pseudomonas fluorescens CHA0 and repression by the bacterial metabolites salicylate and pyoluteorin.
Schnider-Keel U., Seematter A., Maurhofer M., Blumer C., Duffy B., Gigot-Bonnefoy C., Reimmann C., Notz R., Défago G., Haas D. et al., 2000. Journal of Bacteriology, 182 (5) pp. 1215-1225.
 
Biocontrol ability of fluorescent pseudomonads genetically dissected: importance of positive feedback regulation.
Haas D., Blumer C., Keel C., 2000. Current Opinion in Biotechnology, 11 (3) pp. 290-297.
 
Regulation and autoinduction of antifungal metabolites in Pseudomonas fluorescens
Keel C., Haas D., 2000. dans Proceedings of the 5th International Workshop on Plant Growth-Promoting Rhizobacteria, Villa Carlos Paz, Cordoba, Argentina..
 
Repression of bacterial genes by a pathogen phytotoxin determines the relative role of Pseudomonas antifungal compounds in biocontrol
Duffy B., Keel C., Schnider-Keel U., Défago G., 2000., APS Annual Meeting pp. S20 dans Phytopathology.
 
Small, stable shuttle vectors based on the minimal pVS1 replicon for use in gram-negative, plant-associated bacteria.
Heeb S., Itoh Y., Nishijyo T., Schnider U., Keel C., Wade J., Walsh U., O'Gara F., Haas D., 2000. Molecular Plant-microbe Interactions, 13 (2) pp. 232-237.
 
Application of phloroglucinol production as a phenotypic marker for selecting better biocontrol bacteria
Zala M., Gyawali C., Duffy B., Keel C., Défago G., 1999., APS Annual Meeting pp. S88 dans Phytopathology.
 
Biocontrol by phenazine-1-carboxamide-producing Pseudomonas chlororaphis PCL1391of tomato root rot caused by Fusarium oxysporum f. sp. radicis-lycopersici
Chin-A-Woeng T.F.C., Bloemberg G.V., van der Bij A.J., van der Drift K.M.G.F., Schripsema J., Kroon B., Scheffer R.J., Keel C., Bakker P.A.H.M., Tichy H.-V. et al., 1998. Molecular Plant-Microbe Interactions, 11 (11) pp. 1069-1077.
 
Characterization of the hcnABC gene cluster encoding hydrogen cyanide synthase and anaerobic regulation by ANR in the strictly aerobic biocontrol agent Pseudomonas fluorescens CHA0.
Laville J., Blumer C., Von Schroetter C., Gaia V., Défago G., Keel C., Haas D., 1998. Journal of Bacteriology, 180 (12) pp. 3187-3196.
 
Enhanced production of indole-3-acetic acid by a genetically modified strain of Pseudomonas fluorescens CHA0 affects root growth of cucumber but does not improve protection of the plant against Pythium root rot
Beyeler M., Keel C., Michaux P., Haas D., 1998. FEMS Microbiology Ecology, 28 (3) pp. 225-233. Peer-reviewed.
 
Impact of Pseudomonas fluorescens strain CHA0 and a derivative with improved biocontrol activity on the culturable resident bacterial community on cucumber roots
Natsch A., Keel C., Hebecker N., Laasik E., Défago G., 1998. FEMS Microbiology Ecology, 27 (4) pp. 365-380. Peer-reviewed.
 
Transport of a biocontrol Pseudomonas fluorescens through 2.5-m deep outdoor lysimeters and survival in the effluent water
Troxler J., Zala M., Natsch A., Nievergelt J., Keel C., Défago G., 1998. Soil Biology and Biochemistry, 30 (5) pp. 621-631.
 
Biocontrol strain Pseudomonas fluorescens CHA0 and its genetically modified derivative with enhanced biocontrol capability exert comparable effects on the structure of a Sinorhizobium meliloti population in a gnotobiotic system
Niemann S., Keel C., Pühler A., Selbitschka W., 1997. Biology and Fertility of Soils, 25 (3) pp. 240-244.
 
Construction of Pseudomonas strains with improved biocontrol activity
Haas D., Keel C., 1997. pp. 82-86 dans Ogoshi A., Kobayashi K., Homma Y., Kodama F., Kondo N., Akino S. (eds.) Plant growth-promoting Rhizobacteria: present status and future prospects, Japan-OECD.
 
Effect of enhanced production of indole-3-acetic acid by the biological control agent Pseudomonas fluorescens CHA0 on plant growth
Beyeler M., Michaux P., Keel C., Haas D., 1997. pp. 310-312 dans Ogoshi A., Kobayashi K., Homma Y., Kodama F., Kondo N., Akino S. (eds.) Plant Growth-Stimulating Rhizobacteria, Present Status and Future Prospects, Nakanishi Printing, Sapporo, Japan.
 
Fate of released Pseudomonas bacteria in the soil profile: implications for the use of genetically-modified microbial inoculants
Défago G., Keel C., Moënne-Loccoz Y., 1997. pp. 403-418 dans Zelikoff J. T., Stolen J. S. (eds.) Ecotoxicology: responses, biomarkers and risk assessment, OECD.
 
Influence of biocontrol strain Pseudomonas fluorescens CHA0 and its antibiotic overproducing derivative on the diversity of root colonizing pseudomonads
Natsch A., Keel C., Hebecker N., Laasik E., Défago G., 1997. FEMS Microbiology Ecology, 23 (4) pp. 341-352. Peer-reviewed.
 
Interactions between beneficial soil bacteria and root pathogens: mechanisms and ecological impact
Keel C., Défago G., 1997. pp. 27-46 dans Gange A. C., Brown V. K. (eds.) Multitrophic interactions in terrestrial systems, Blackwell Science.
 
Interactions between the biocontrol agent Pseudomonas fluorescens CHA0 and Thielaviopsis basicola in tobacco roots observed by immunofluorescence microscopy
Troxler J., Berling C.-H., Moënne-Loccoz Y., Keel C., Défago G., 1997. Plant Pathology, 46 (1) pp. 62-71.
 
Predominance of Nonculturable Cells of the Biocontrol Strain Pseudomonas fluorescens CHA0 in the Surface Horizon of Large Outdoor Lysimeters.
Troxler J., Zala M., Moenne-Loccoz Y., Keel C., Defago G., 1997. Applied and Environmental Microbiology, 63 (10) pp. 3776-3782.
 
Regulation of mucoidy in the biological control agent Pseudomonas fluorescens CHA0 and construction of an exopolysaccharide-overproducing variant
Schnider U., Keel C., Blumer C., Michaux P., Défago G., Haas D., 1997. pp. 349-352 dans Ogoshi A., Kobayashi K., Homma Y., Kodama F., Kondo N., Akino S. (eds.) Plant growth-promoting Rhizobacteria: present status and future prospects, Japan-OECD.
 
The global regulator GacA of Pseudomonas fluorescens CHA0 is required for the suppression of root diseases in dicotyledons but not in Gramineae
Schmidli-Sacherer P., Keel C., Défago G., 1997. Plant Pathology, 46 (1) pp. 80-90.
 
Bakterien als Nützlinge
Keel C., 1996., Bioskop 3: 27.
 
Conservation of the 2,4-diacetylphloroglucinol biosynthesis locus among fluorescent Pseudomonas strains from diverse geographic locations.
Keel C., Weller D.M., Natsch A., Défago G., Cook R.J., Thomashow L.S., 1996. Applied and Environmental Microbiology, 62 (2) pp. 552-563.
 
Fate of introduced biocontrol agent Pseudomonas fluorescens CHA0 in soil: Biosafety considerations
Défago G., Keel C., Moënne-Loccoz Y., 1996. pp. 241-245 dans Wenhua T., Cook R. J., Rovira A. (eds.) Advances in biological control of plant diseases, China Agricultural University Press.
 
Importance of Preferential Flow and Soil Management in Vertical Transport of a Biocontrol Strain of Pseudomonas fluorescens in Structured Field Soil.
Natsch A., Keel C., Troxler J., Zala M., Von Albertini N., Defago G., 1996. Applied and Environmental Microbiology, 62 (1) pp. 33-40.
 
Amplification of the housekeeping sigma factor in Pseudomonas fluorescens CHA0 enhances antibiotic production and improves biocontrol abilities.
Schnider U., Keel C., Blumer C., Troxler J., Défago G., Haas D., 1995. Journal of Bacteriology, 177 (18) pp. 5387-5392.
 
Harmlose Bodenbakterien statt Pflanzenschutzmittel
Keel C., Défago G., 1995., Das Bild des Monats März 1995 aus Wissenschaft und Forschung. Swiss National Foundation for Scientific Research..
 
Influence of plant species on disease suppression by Pseudomonas fluorescens strain CHA0 with enhanced antibiotic production
Maurhofer M., Keel C., Haas D., Défago G., 1995. Plant Patholology, 44 (1) pp. 40-50.
 
Plant protection by beneficial soil bacteria, mechanisms and safety considerations
Keel C., 1995., SGP Info 3: 2-5..
 
Pseudomonads as biocontrol agents of diseases caused by soil-borne pathogens
Défago G., Keel C., 1995. pp. 137-148 dans Hokkanen H. M. T., Lynch J. M. (eds.) Pseudomonads as biocontrol agents of diseases caused by soil-borne pathogens, Cambridge University Press.
 
Temporally distinct accumulation of transcripts encoding enzymes of the prechorismate pathway in elicitor-treated, cultured tomato cells.
Görlach J., Raesecke H.R., Rentsch D., Regenass M., Roy P., Zala M., Keel C., Boller T., Amrhein N., Schmid J., 1995. Proceedings of the National Academy of Sciences of the United States of America, 92 (8) pp. 3166-3170.
 
Tn5-directed cloning of pqq genes from Pseudomonas fluorescens CHA0: mutational inactivation of the genes results in overproduction of the antibiotic pyoluteorin.
Schnider U., Keel C., Voisard C., Défago G., Haas D., 1995. Applied and Environmental Microbiology, 61 (11) pp. 3856-3864.
 
Application of biocontrol strain Pseudomonas fluorescens CHA0 to standard soil columns and field-scale lysimeters - I. Survival and translocation
Keel C., Zala M., Troxler J., Natsch A., Pfirter H. P., Défago G., 1994. pp. 255-257 dans Ryder M. H., Stephens P. M., Bowen G. D. (eds.) Improving plant productivity with Rhizosphere bacteria, CSIRO Division of Soils.
 
Application of biocontrol strain Pseudomonas fluorescens CHA0 to standard soil columns and field-scale lysimeters - II. Detection and enumeration
Troxler J., Zala M., Keel C., Natsch A., Défago G., 1994. pp. 258-260 dans Ryder M. H., Stephens P. M., Bowen G. D. (eds.) Improving plant productivity with Rhizosphere bacteria, CSIRO Division of Soils.
 
Biocontrol of root diseases by Pseudomonas fluorescens CHA0: current concepts and experimental approaches
Voisard C., Bull C., Keel C., Laville J., Maurhofer M., Schnider U. , Défago G., Haas D., 1994. pp. 67-89 dans O'Gara F., Dowling D., Boesten B. (eds.) Molecular ecology of rhizosphere microorganisms: biotechnology and the release of GMOs chap. 6, VCH Publishers.
 
Contribution of the Global Regulator Gene gacA to Persistence and Dissemination of Pseudomonas fluorescens Biocontrol Strain CHA0 Introduced into Soil Microcosms.
Natsch A., Keel C., Pfirter H.A., Haas D., Défago G., 1994. Applied and Environmental Microbiology, 60 (7) pp. 2553-2560.
 
Molecular approaches towards understanding the mechanisms of disease suppression by Pseudomonas fluorescens CHA0
Keel C., 1994. p. 616 dans Molecular Ecology.
 
Pyoluteorin production by Pseudomonas fluorescens strain CHA0 is involved in the suppression of Pythium damping-off of cress but not of cucumber
Maurhofer M., Keel C., Haas D., Défago G., 1994. European Journal of Plant Patholology, 100 (3-4) pp. 221-232.
 
Risk assessment for the release of plant growth-promoting rhizobacteria, disscussion manuscript
Défago G., Duffy B., Keel C., 1994. p. 254 dans Ryder M. H., Stephens P. M., Bowen G. D. (eds.) Improving plant productivity with Rhizosphere bacteria, CSIRO Division of Soils.
 
Role of some metabolites produced by Pseudomonas fluorescens strain CHA0 in the suppression of different plant diseases
Maurhofer M., Sacherer P., Keel C., Défago G., 1994. pp. 117-119 dans Ryder M. H., Stephens P. M., Bowen G. D. (eds.) Improving plant productivity with Rhizosphere bacteria, CSIRO Division of Soils.
 
Bacterial antagonists of plant pathogens in the rhizosphere: Mechanisms and prospects
Keel C., 1992. Bulletin OILB/SROP, 15 (1) pp. 93-99.
 
Global control in Pseudomonas fluorescens mediating antibiotic synthesis and suppression of black root rot of tobacco.
Laville J., Voisard C., Keel C., Maurhofer M., Défago G., Haas D., 1992. Proceedings of the National Academy of Sciences of the United States of America, 89 (5) pp. 1562-1566.
 
Influence of enhanced antibiotic production in Pseudomonas fluorescens strain CHA0 on its disease suppressive capacity
Maurhofer M., Keel C., Schnider U., Voisard C., Haas D., Défago G., 1992. Phytopathology, 82 (2) pp. 190-195.
 
Krankheitsunterdrückende Böden
Défago G., Fuchs J., Keel C., Maurhofer M., Oberhänsli Th., Sacherer P., 1992. ETH Bulletin, 242 pp. 25-26.
 
Suppression of root diseases by Pseudomonas fluorescens CHA0: Importance of the bacterial secondary metabolite 2,4-diacetylphloroglucinol
Keel C., Schnider U., Maurhofer M., Voisard C., Laville J., Burger U., Wirthner P., Haas D., Défago G., 1992. Molecular Plant-Microbe Interactions, 5 (1) pp. 4-13.
 
Characterization and analysis of site-specific antagonism
Défago G., Fuchs J., Kahr G., Keel C., Voisard C., 1991. p. 339 dans Beemster A. B. R., Bollen G. J., Gerlagh M., Ruissen M. A., Schippers B., Tempel A. (eds.) Biotic interactions and soil-borne diseases, Elsevier.
 
Does enhanced antibiotic production in Pseudomonas fluorescens strain CHA0 improve its disease suppressive capacity?
Maurhofer M., Keel C., Schnider U., Voisard C., Haas D., Défago G., 1991. Bulletin OILB/SROP, 14 (8) pp. 201-202.
 
HCN as a signal in plant-microbe interactions
Défago G., Keel C., Maurhofer M., Sacherer P., Wüthrich B., Gaia V., Laville J., Haas D., 1991. Bulletin OILB/SROP, 14 (8) pp. 199-200.
 
Plant growth promoting rhizobacteria - progress and prospects
Keel C., Koller B., Défago G. (eds.), 1991. Bulletin OILB/SROP, 14 418, ETHZ.
 
Role of 2,4-diacetylphloroglucinol in the suppression of take-all of wheat by a strain of Pseudomonas fluorescens
Keel C., Maurhofer M., Oberhänsli Th., Voisard C., Haas D., Défago G., 1991. pp. 335-339 dans Beemster A. B. R., Bollen G. J., Gerlagh M., Ruissen M. A., Schippers B., Tempel A. (eds.) Biotic interactions and soil-borne diseases, Elsevier.
 
Secondary metabolites of Pseudomonas fluorescens strain CHA0 involved in the suppression of root diseases
Haas D., Keel C., Laville J., Maurhofer M., Oberhänsli T., Schnider U., Voisard C., Wüthrich B., Défago G., 1991. pp. 450-456 dans Hennecke H., Verma D. P. S. (eds.) Current plant science and biotechnology in agriculture, 10, Kluwer.
 
Suppression of soil-borne pathogens by Pseudomonas fluorescens - a multifactorial mechanism
Keel C., Haas D., Laville J., Maurhofer M., Oberhänsli Th., Schnider U., Voisard C., Défago G., 1991. Bulletin OILB/SROP, 14 (8) pp. 195-196.
 
The fluorescent siderophore of Pseudomonas fluorescens strain CHA0 has no effect on the suppression of root diseases of wheat
Keel C., Défago G., 1991. Bulletin OILB/SROP, 14 (8) pp. 136-142.
 
Pseudomonads as antagonists of plant pathogens in the rhizosphere: role of the antibiotic 2,4-diacetylphloroglucinol in the suppression of black root rot of tobacco
Keel C., Wirthner Ph., Oberhänsli Th., Voisard C., Burger U., Haas D., Défago G., 1990. Symbiosis, 9 (1-3) pp. 327-341.
 
Role of 2,4-diacetylphloroglucinol in disease suppression by a strain of Pseudomonas fluorescens
Keel C., Voisard C., Haas D., Défago G., 1990., American Phytopathological Society, Canadian Phytopathological Society p. 1024 dans Phytopathology, Phytopathology.
 
Suppression of black root rot of tobacco and other root diseases by strains of Pseudomonas fluorescens: Potential applications and mechanisms
Défago G., Berling C.-H., Burger U., Haas D., Kahr G., Keel C. , Voisard C., Wirthner P., Wüthrich B., 1990. pp. 93-108 dans Hornby D., ... [et al.] (eds.) Biological control of soil-borne plant pathogens, CAB International.
 
Cyanide production by Pseudomonas fluorescens helps suppress black root rot of tobacco under gnotobiotic conditions.
Voisard C., Keel C., Haas D., Dèfago G., 1989. EMBO Journal, 8 (2) pp. 351-358.
 
Iron sufficiency, a prerequisite for suppression of tobacco black root rot by Pseudomonas fluorescens strain CHA0 under gnotobiotic conditions
Keel C., Voisard C., Berling C.-H., Kahr G., Défago G., 1989. Phytopathology, 79 (5) pp. 584-589.
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