Characterization of Hydrocarbon-Degrading Bacteria in Constructed Wetland Microcosms Used to Treat Crude Oil Polluted Water

Ten plant species were grown in constructed wetlands (CWs) to remediate water containing 2% (w/v) crude oil. The plant species with better growth and biomass production were Typha latifolia and Cyperus laevigatus , and they were significantly correlated ( R 2  = 0.91) with hydrocarbon degradation. F...

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Published inBulletin of environmental contamination and toxicology Vol. 102; no. 3; pp. 358 - 364
Main Authors Hashmat, Amer Jamal, Afzal, Muhammad, Fatima, Kaneez, Anwar-ul-Haq, Muhammad, Khan, Qaiser Mahmood, Arias, Carlos A., Brix, Hans
Format Journal Article
LanguageEnglish
Published New York Springer US 01.03.2019
Springer Nature B.V
Subjects
Aquatic Pollution
Artificial wetlands
Bacteria
Biodegradation
Crude oil
Degradation
Earth and Environmental Science
Ecotoxicology
Environment
Environmental Chemistry
Environmental Health
Flowers & plants
Hydrocarbon-degrading bacteria
Hydrocarbons
Microcosms
Pollution
Rhizosphere
Soil Science & Conservation
Strains (organisms)
Waste Water Technology
Water Management
Water Pollution Control
Wetlands
Hydrocarbons
Bacterial diversity
Constructed wetlands
Phytoremediation
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Summary:Ten plant species were grown in constructed wetlands (CWs) to remediate water containing 2% (w/v) crude oil. The plant species with better growth and biomass production were Typha latifolia and Cyperus laevigatus , and they were significantly correlated ( R 2  = 0.91) with hydrocarbon degradation. From T. latifolia and C. laevigatus , 33 hydrocarbon-degrading bacterial strains were isolated from the rhizosphere, and root and shoot interiors. More diversified bacteria were found in the rhizosphere and endosphere of C. laevigatus than those of T. latifolia . The predominant cultural hydrocarbon-degrading bacteria were shown to belong to the genera Pseudomonas, Acinetobacter and Bacillus . In addition to genes involved in hydrocarbon degradation, most of the bacteria displayed multiple plant growth promoting (PGP) activities. This study suggests the importance of selecting suitable bacterial strains with hydrocarbon degradation and PGP activities for improving the efficacy of CWs used in remediating water contaminated with crude oil.
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ISSN:0007-4861
1432-0800
DOI:10.1007/s00128-018-2518-y