Rhizoremediation of diesel-contaminated soil using the plant growth-promoting rhizobacterium Gordonia sp. S2RP-17

Sun Hwa Hong; Hee Wook Ryu; Jaisoo Kim; Kyung Suk Cho

doi:10.1007/s10532-010-9432-2

Rhizoremediation of diesel-contaminated soil using the plant growth-promoting rhizobacterium Gordonia sp. S2RP-17

Sun Hwa Hong, Hee Wook Ryu, Jaisoo Kim, Kyung Suk Cho

Department of Environmental Science & Engineering

Research output: Contribution to journal › Article › peer-review

86 Scopus citations

Abstract

A plant growth-promoting rhizobacterium (PGPR) was isolated and identified as Gordonia sp. S2RP-17, which showed ACC deaminase and siderophore synthesizing activities. Its maximum specific growth rate was 0.54 ± 0.12 d^-1 at 5,000 mg L^-1 of total petroleum hydrocarbon (TPH), and its maximum diesel degradation rate was 2,434.0 ± 124.4 mg L^-1 d^-1 at 20,000 mg L^-1 of TPH. The growth of Zea mays was significantly promoted by the inoculation of Gordonia sp. S2RP-17 in the diesel-contaminated soil. Measured TPH removal efficiencies by various means were 13% by natural attenuation, 84.5% by planting Zea mays, and 95.8% by the combination of Zea mays and Gordonia sp. S2RP-17. The S2RP-17 cell counts were maintained at 1 × 10⁶ CFU g-soil^-1 during the remediation period, although they slightly decreased from their initial numbers (2.94 × 10⁷ CFU g-soil^-1). These results indicate that rhizoremediation using both Zea mays and Gordonia sp. S2RP-17 is a promising strategy for enhancing remediation efficiency of diesel-contaminated soils.

Original language	English
Pages (from-to)	593-601
Number of pages	9
Journal	Biodegradation
Volume	22
Issue number	3
DOIs	https://doi.org/10.1007/s10532-010-9432-2
State	Published - Jun 2011

Bibliographical note

Funding Information:
Acknowledgments This research was supported by the Basic Science Research Program through the National Research Foundation of Korea (NRF) funded by the Ministry of Education, Science and Technology (MEST) (NRL program, R0A-2008-000-20044-0). It was also supported through the Advanced Environmental Biotechnology Research Center at Pohang University of Science and Technology (2009-0079504) and the Basic Research Program (R01-2005-000-10268-0) by the NRF, MEST.

Keywords

Diesel-contaminated soil
Gordonia sp.
Plant growth-promoting rhizobacterium
Rhizoremediation
Zea mays

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10.1007/s10532-010-9432-2

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title = "Rhizoremediation of diesel-contaminated soil using the plant growth-promoting rhizobacterium Gordonia sp. S2RP-17",

abstract = "A plant growth-promoting rhizobacterium (PGPR) was isolated and identified as Gordonia sp. S2RP-17, which showed ACC deaminase and siderophore synthesizing activities. Its maximum specific growth rate was 0.54 ± 0.12 d-1 at 5,000 mg L-1 of total petroleum hydrocarbon (TPH), and its maximum diesel degradation rate was 2,434.0 ± 124.4 mg L-1 d-1 at 20,000 mg L-1 of TPH. The growth of Zea mays was significantly promoted by the inoculation of Gordonia sp. S2RP-17 in the diesel-contaminated soil. Measured TPH removal efficiencies by various means were 13% by natural attenuation, 84.5% by planting Zea mays, and 95.8% by the combination of Zea mays and Gordonia sp. S2RP-17. The S2RP-17 cell counts were maintained at 1 × 106 CFU g-soil-1 during the remediation period, although they slightly decreased from their initial numbers (2.94 × 107 CFU g-soil-1). These results indicate that rhizoremediation using both Zea mays and Gordonia sp. S2RP-17 is a promising strategy for enhancing remediation efficiency of diesel-contaminated soils.",

keywords = "Diesel-contaminated soil, Gordonia sp., Plant growth-promoting rhizobacterium, Rhizoremediation, Zea mays",

author = "Hong, {Sun Hwa} and Ryu, {Hee Wook} and Jaisoo Kim and Cho, {Kyung Suk}",

note = "Funding Information: Acknowledgments This research was supported by the Basic Science Research Program through the National Research Foundation of Korea (NRF) funded by the Ministry of Education, Science and Technology (MEST) (NRL program, R0A-2008-000-20044-0). It was also supported through the Advanced Environmental Biotechnology Research Center at Pohang University of Science and Technology (2009-0079504) and the Basic Research Program (R01-2005-000-10268-0) by the NRF, MEST.",

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doi = "10.1007/s10532-010-9432-2",

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AU - Hong, Sun Hwa

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AU - Kim, Jaisoo

AU - Cho, Kyung Suk

N1 - Funding Information: Acknowledgments This research was supported by the Basic Science Research Program through the National Research Foundation of Korea (NRF) funded by the Ministry of Education, Science and Technology (MEST) (NRL program, R0A-2008-000-20044-0). It was also supported through the Advanced Environmental Biotechnology Research Center at Pohang University of Science and Technology (2009-0079504) and the Basic Research Program (R01-2005-000-10268-0) by the NRF, MEST.

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N2 - A plant growth-promoting rhizobacterium (PGPR) was isolated and identified as Gordonia sp. S2RP-17, which showed ACC deaminase and siderophore synthesizing activities. Its maximum specific growth rate was 0.54 ± 0.12 d-1 at 5,000 mg L-1 of total petroleum hydrocarbon (TPH), and its maximum diesel degradation rate was 2,434.0 ± 124.4 mg L-1 d-1 at 20,000 mg L-1 of TPH. The growth of Zea mays was significantly promoted by the inoculation of Gordonia sp. S2RP-17 in the diesel-contaminated soil. Measured TPH removal efficiencies by various means were 13% by natural attenuation, 84.5% by planting Zea mays, and 95.8% by the combination of Zea mays and Gordonia sp. S2RP-17. The S2RP-17 cell counts were maintained at 1 × 106 CFU g-soil-1 during the remediation period, although they slightly decreased from their initial numbers (2.94 × 107 CFU g-soil-1). These results indicate that rhizoremediation using both Zea mays and Gordonia sp. S2RP-17 is a promising strategy for enhancing remediation efficiency of diesel-contaminated soils.

AB - A plant growth-promoting rhizobacterium (PGPR) was isolated and identified as Gordonia sp. S2RP-17, which showed ACC deaminase and siderophore synthesizing activities. Its maximum specific growth rate was 0.54 ± 0.12 d-1 at 5,000 mg L-1 of total petroleum hydrocarbon (TPH), and its maximum diesel degradation rate was 2,434.0 ± 124.4 mg L-1 d-1 at 20,000 mg L-1 of TPH. The growth of Zea mays was significantly promoted by the inoculation of Gordonia sp. S2RP-17 in the diesel-contaminated soil. Measured TPH removal efficiencies by various means were 13% by natural attenuation, 84.5% by planting Zea mays, and 95.8% by the combination of Zea mays and Gordonia sp. S2RP-17. The S2RP-17 cell counts were maintained at 1 × 106 CFU g-soil-1 during the remediation period, although they slightly decreased from their initial numbers (2.94 × 107 CFU g-soil-1). These results indicate that rhizoremediation using both Zea mays and Gordonia sp. S2RP-17 is a promising strategy for enhancing remediation efficiency of diesel-contaminated soils.

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ER -

Rhizoremediation of diesel-contaminated soil using the plant growth-promoting rhizobacterium Gordonia sp. S2RP-17

Abstract

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Keywords

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