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| Phytoremediation of Pb Polluted Soil by Kenaf with Assistance of Plant Growth Promoting Rrhizobectrium（PGPR） |
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| KeyWord:kenaf; plant growth promoting rhizobacteria（PGPR）; phytostabilization; lead |
| Author Name | Affiliation | | CHEN Yan-mei | School of Environmental Science and Engineering, Sun Yat-sen University, Guangzhou 510275, China | | BAI Jun | School of Environmental Science and Engineering, Sun Yat-sen University, Guangzhou 510275, China | | YANG Yu-xi | School of Environmental Science and Engineering, Sun Yat-sen University, Guangzhou 510275, China | | WANG Shi-zhong | School of Environmental Science and Engineering, Sun Yat-sen University, Guangzhou 510275, China
Guangdong Provincial Key Lab of Environmental Pollution Control and Remediation Technology, Guangdong 510275, China | | YANG Xiu-hong | School of Environmental Science and Engineering, Sun Yat-sen University, Guangzhou 510275, China
Guangdong Provincial Key Lab of Environmental Pollution Control and Remediation Technology, Guangdong 510275, China | | QIU Rong-liang | School of Environmental Science and Engineering, Sun Yat-sen University, Guangzhou 510275, China
Guangdong Provincial Key Lab of Environmental Pollution Control and Remediation Technology, Guangdong 510275, China |
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| Abstract: |
| Phytoremediation is a promising option to remediate soils contaminated by heavy metals. Plant growth promoting rhizobectrium（PGPR） may further enhance phytoremediation efficiency. In a pot experiment, the impact of Pb on the growth of and Pb accumulation and translocation in kenaf（Hibiscus cannabinus） with inoculation of a Pb resistant PGPR DBM1（Arthrobacter sp.） was studied. Kenaf had high resistance to Pb and could grow well upto 800 mg Pb·kg-1 soils. The tolerance of kenaf to Pb could result from Pb accumulation in the roots and limited translocation to the shoots（TF<1）. The growth of kenaf was inhibited at 1600 mg Pb·kg-1 soil. Inoculation of DBM1 effectively increased biomass and chlorophyll contents of kenaf, with more effective at higher Pb stress. It was concluded that kenaf could be used in combination with PGPR to phytoremediate Pb severely contaminated soils. |
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