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Phytomediated Biostimulation of the Autochthonous Bacterial Community for the Acceleration of the Depletion of Polycyclic Aromatic Hydrocarbons in Contaminated Sediments
Joint Authors
Gentini, Alessandro
Becarelli, Simone
Azaizeh, Hassan
Lorenzi, Roberto
Siracusa, Giovanna
Di Gregorio, Simona
Source
Issue
Vol. 2014, Issue 2014 (31 Dec. 2014), pp.1-11, 11 p.
Publisher
Hindawi Publishing Corporation
Publication Date
2014-08-07
Country of Publication
Egypt
No. of Pages
11
Main Subjects
Abstract EN
Polycyclic aromatic hydrocarbons (PAHs) are a large group of organic contaminants causing hazards to organisms including humans.
The objective of the study was to validate the vegetation of dredged sediments with Phragmites australis as an exploitable biostimulation approach to accelerate the depletion of PAHs in nitrogen spiked sediments.
Vegetation with Phragmites australis resulted in being an efficient biostimulation approach for the depletion of an aged PAHs contamination (229.67±15.56 μg PAHs/g dry weight of sediment) in dredged sediments.
Phragmites australis accelerated the oxidation of the PAHs by rhizodegradation.
The phytobased approach resulted in 58.47% of PAHs depletion.
The effects of the treatment have been analyzed in terms of both contaminant depletion and changes in relative abundance of the metabolically active Gram positive and Gram negative PAHs degraders.
The metabolically active degraders were quantified both in the sediments and in the root endospheric microbial community.
Quantitative real-time PCR reactions have been performed on the retrotranscribed transcripts encoding the Gram positive and Gram negative large α subunit (RHDα) of the aromatic ring hydroxylating dioxygenases.
The Gram positive degraders resulted in being selectively favored by vegetation with Phragmites australis and mandatory for the depletion of the six ring condensed indeno[1,2,3-cd]pyrene and benzo[g,h,i]perylene.
American Psychological Association (APA)
Di Gregorio, Simona& Gentini, Alessandro& Siracusa, Giovanna& Becarelli, Simone& Azaizeh, Hassan& Lorenzi, Roberto. 2014. Phytomediated Biostimulation of the Autochthonous Bacterial Community for the Acceleration of the Depletion of Polycyclic Aromatic Hydrocarbons in Contaminated Sediments. BioMed Research International،Vol. 2014, no. 2014, pp.1-11.
https://search.emarefa.net/detail/BIM-505856
Modern Language Association (MLA)
Di Gregorio, Simona…[et al.]. Phytomediated Biostimulation of the Autochthonous Bacterial Community for the Acceleration of the Depletion of Polycyclic Aromatic Hydrocarbons in Contaminated Sediments. BioMed Research International No. 2014 (2014), pp.1-11.
https://search.emarefa.net/detail/BIM-505856
American Medical Association (AMA)
Di Gregorio, Simona& Gentini, Alessandro& Siracusa, Giovanna& Becarelli, Simone& Azaizeh, Hassan& Lorenzi, Roberto. Phytomediated Biostimulation of the Autochthonous Bacterial Community for the Acceleration of the Depletion of Polycyclic Aromatic Hydrocarbons in Contaminated Sediments. BioMed Research International. 2014. Vol. 2014, no. 2014, pp.1-11.
https://search.emarefa.net/detail/BIM-505856
Data Type
Journal Articles
Language
English
Notes
Includes bibliographical references
Record ID
BIM-505856