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231224s2011 xx |||||o 00| ||eng c |
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|a 10.1016/j.plaphy.2011.03.007
|2 doi
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|a pubmed24n0691.xml
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|a (DE-627)NLM20715421X
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|a (NLM)21459011
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|a DE-627
|b ger
|c DE-627
|e rakwb
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|a eng
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| 100 |
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|a Golubev, Sergey N
|e verfasserin
|4 aut
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|a Rhizosphere indole-3-acetic acid as a mediator in the Sorghum bicolor-phenanthrene-Sinorhizobium meliloti interactions
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|c 2011
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|a Text
|b txt
|2 rdacontent
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|a ƒaComputermedien
|b c
|2 rdamedia
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|a ƒa Online-Ressource
|b cr
|2 rdacarrier
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|a Date Completed 06.12.2011
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|a Date Revised 30.09.2020
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|a published: Print-Electronic
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|a Citation Status MEDLINE
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|a Copyright © 2011 Elsevier Masson SAS. All rights reserved.
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|a We studied a model system consisting of Sorghum bicolor, phenanthrene, and an auxin-producing polycyclic aromatic hydrocarbon-degrading Sinorhizobium meliloti strain to clarify whether rhizosphere indole-3-acetic acid (IAA) takes part in the plant-pollutant-bacteria interactions. Phenanthrene and S. meliloti treatments of sorghum contributed to a decrease in the rhizosphere IAA concentration and to phytohormone accumulation, respectively. Regression analysis showed significant correlations between alteration in root-zone IAA content and alterations in the root-surface area, exudation, and rhizosphere effects for culturable heterotrophic bacteria, the S. meliloti strain, and other phenanthrene degraders. According to the data obtained, phenanthrene degraders get an advantage over nondegradative rhizobacteria from IAA for rhizosphere colonization. An IAA-dependent increase in the root-surface area leads to improved sorghum growth under pollutant stress. The carbon flux from the roots is corrected by the auxin because of its influence on the exuding-surface area and on the intensity of secretion by the root cells. On the other hand, the rhizosphere IAA pool may be plant-regulated by means of alteration in carboxylate exudation and its influence on bacterial auxin production. A scenario for the IAA-mediated S. bicolor-phenanthrene-S. meliloti interactions is proposed
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|a Journal Article
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|a Research Support, Non-U.S. Gov't
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|a Carboxylic Acids
|2 NLM
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|a Indoleacetic Acids
|2 NLM
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| 650 |
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|a Phenanthrenes
|2 NLM
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| 650 |
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|a Plant Growth Regulators
|2 NLM
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| 650 |
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|a Soil Pollutants
|2 NLM
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| 650 |
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|a phenanthrene
|2 NLM
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| 650 |
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|a 448J8E5BST
|2 NLM
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| 700 |
1 |
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|a Muratova, Anna Yu
|e verfasserin
|4 aut
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| 700 |
1 |
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|a Wittenmayer, Lutz
|e verfasserin
|4 aut
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| 700 |
1 |
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|a Bondarenkova, Anastasia D
|e verfasserin
|4 aut
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| 700 |
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|a Hirche, Frank
|e verfasserin
|4 aut
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| 700 |
1 |
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|a Matora, Larisa Yu
|e verfasserin
|4 aut
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| 700 |
1 |
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|a Merbach, Wolfgang
|e verfasserin
|4 aut
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| 700 |
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|a Turkovskaya, Olga V
|e verfasserin
|4 aut
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| 773 |
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|i Enthalten in
|t Plant physiology and biochemistry : PPB
|d 1991
|g 49(2011), 6 vom: 15. Juni, Seite 600-8
|w (DE-627)NLM098178261
|x 1873-2690
|7 nnns
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| 773 |
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|g volume:49
|g year:2011
|g number:6
|g day:15
|g month:06
|g pages:600-8
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|u http://dx.doi.org/10.1016/j.plaphy.2011.03.007
|3 Volltext
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