Assessing the Potential of Rhizobacteria to Survive under Phenanthrene Pollution

Rhizobacteria possess a wide variety of qualities governing their pollutant-catabolic and rhizospheric competences. We investigated how the abilities to degrade phenanthrene and other polycyclic aromatic hydrocarbons (PAHs), to synthesize surfactants and the phytohormone indole-3-acetic acid (IAA),...

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Bibliographic Details
Published in:Water, air, and soil pollution air, and soil pollution, 2009-03, Vol.198 (1-4), p.5-16
Main Authors: Golubev, Sergey N, Schelud'ko, Andrei V, Muratova, Anna Yu, Makarov, Oleg E, Turkovskaya, Olga V
Format: Article
Language:English
Subjects:
Acetic acid
Atmospheric Protection/Air Quality Control/Air Pollution
Bacteria
biodegradation
Chemotaxis
Climate Change/Climate Change Impacts
Earth and Environmental Science
Environment
Environmental monitoring
Hydrogeology
in vitro culture
Indoleacetic acid
Inoculation
Microorganisms
Motility
Oil pollution
petroleum
Phenanthrene
Phytoremediation
Plant growth
Pollutants
Pollution
Polycyclic aromatic hydrocarbons
Rhizobiales
Sinorhizobium meliloti
soil bacteria
soil pollution
Soil Science & Conservation
strains
Studies
Surfactants
viability
Water Quality/Water Pollution
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Summary:Rhizobacteria possess a wide variety of qualities governing their pollutant-catabolic and rhizospheric competences. We investigated how the abilities to degrade phenanthrene and other polycyclic aromatic hydrocarbons (PAHs), to synthesize surfactants and the phytohormone indole-3-acetic acid (IAA), to be motile, and to perform chemotaxis toward phenanthrene and some potential root-exudate components were manifested in rhizobacteria isolated from oil-polluted sites. We observed that most of the examined rhizobacteria had the abilities under consideration and that in some strains, these were strongly affected by the bacterial environment. Only one strain--Sinorhizobium meliloti P221--exhibited increased PAH-degrading, surfactant-producing, and IAA-synthesizing activities, as well as distinct behavioral responses. We conclude that S. meliloti P221 can be used as a model to assess the contributions of all these activities to plant-inoculation-induced reduction in the soil PAH contents. This strain also may be useful for phytoremediation applications.
ISSN:0049-6979
1573-2932
DOI:10.1007/s11270-008-9821-x