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231223s2005 xx ||||| 00| ||eng c |
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|a DE-627
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|e rakwb
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|a eng
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|a Frey-Klett, Pascale
|e verfasserin
|4 aut
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|a Ectomycorrhizal symbiosis affects functional diversity of rhizosphere fluorescent pseudomonads
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|c 2005
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|a Text
|b txt
|2 rdacontent
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|a ohne Hilfsmittel zu benutzen
|b n
|2 rdamedia
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|b nc
|2 rdacarrier
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|a Date Completed 31.05.2005
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|a Date Revised 30.09.2020
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|a published: Print
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|a Citation Status MEDLINE
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|a Here we characterized the effect of the ectomycorrhizal symbiosis on the genotypic and functional diversity of soil Pseudomonas fluorescens populations and analysed its possible consequences in terms of plant nutrition, development and health. Sixty strains of P. fluorescens were isolated from the bulk soil of a forest nursery, the ectomycorrhizosphere and the ectomycorrhizas of the Douglas fir (Pseudostuga menziesii) seedlings-Laccaria bicolor S238N. They were characterized in vitro with the following criteria: ARDRA, phosphate solubilization, siderophore, HCN and AIA production, genes of N2-fixation and antibiotic synthesis, in vitro confrontation with a range of phytopathogenic and ectomycorrhizal fungi, effect on the Douglas fir-L. bicolor symbiosis. For most of these criteria, we demonstrated that the ectomycorrhizosphere significantly structures the P. fluorescens populations and selects strains potentially beneficial to the symbiosis and to the plant. This prompts us to propose the ectomycorrhizal symbiosis as a true microbial complex where multitrophic interactions take place. Moreover it underlines the fact that this symbiosis has an indirect positive effect on plant growth, via its selective pressure on bacterial communities, in addition to its known direct positive effect
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|a Journal Article
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|a Research Support, Non-U.S. Gov't
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|a Indoleacetic Acids
|2 NLM
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|a Siderophores
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|a Hydrogen Cyanide
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|a Chavatte, Michaël
|e verfasserin
|4 aut
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|a Clausse, Marie-Lise
|e verfasserin
|4 aut
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|a Courrier, Sébastien
|e verfasserin
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|a Le Roux, Christine
|e verfasserin
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|a Raaijmakers, Jos
|e verfasserin
|4 aut
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|a Martinotti, Maria Giovanna
|e verfasserin
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|a Pierrat, Jean-Claude
|e verfasserin
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|a Garbaye, Jean
|e verfasserin
|4 aut
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|i Enthalten in
|t The New phytologist
|d 1979
|g 165(2005), 1 vom: 01. Jan., Seite 317-28
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|x 1469-8137
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|g volume:165
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