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| Variations in rhizosphere enzymatic activities and microbiological characteristics between high and low ciprofloxacin accumulation cultivars of Brassica campestris L. |
| Received:April 13, 2017 |
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| KeyWord:Brassica parachinensis L.;ciprofloxacin;uptake accumulation;cultivar variation;rhizosphere microbes;enzymatic activity |
| Author Name | Affiliation | E-mail | | HUANG Xian-pei | Guangdong Provincial Research Center for Environment Pollution Control and Remediation Materials, School of Environment, Jinan University, Guangzhou 510632, China | | | XIANG Lei | Guangdong Provincial Research Center for Environment Pollution Control and Remediation Materials, School of Environment, Jinan University, Guangzhou 510632, China | | | YIN Qian | Guangdong Provincial Research Center for Environment Pollution Control and Remediation Materials, School of Environment, Jinan University, Guangzhou 510632, China | | | ZHAO Hai-ming | Guangdong Provincial Research Center for Environment Pollution Control and Remediation Materials, School of Environment, Jinan University, Guangzhou 510632, China | | | YU Le-yi | Guangdong Provincial Research Center for Environment Pollution Control and Remediation Materials, School of Environment, Jinan University, Guangzhou 510632, China | | | LI Yan-wen | Guangdong Provincial Research Center for Environment Pollution Control and Remediation Materials, School of Environment, Jinan University, Guangzhou 510632, China | | | CAI Quan-ying | Guangdong Provincial Research Center for Environment Pollution Control and Remediation Materials, School of Environment, Jinan University, Guangzhou 510632, China | | | MO Ce-hui | Guangdong Provincial Research Center for Environment Pollution Control and Remediation Materials, School of Environment, Jinan University, Guangzhou 510632, China | tchmo@jnu.edu.cn |
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| Abstract: |
| The rhizosphere microecology plays a key role in uptake and accumulation of pollutants in plants. The variations in rhizosphere enzymatic activities and microbiological characteristics between high and low ciprofloxacin(CIP) accumulation cultivars of Brassica campestris L. were investigated using pot experiments to expound the microbiological mechanism of variations in removal of CIP in the rhizosphere of the two cultivars. Results showed that cultivation of both the cultivars significantly enhanced the degradation of CIP in soil. At high CIP level, the removal efficiency of CIP in the rhizosphere of the high accumulator(48.7%) was significantly higher than that of the low accumulator(39.4%)(P<0.05). The amount of cultivable bacteria; the richness and evenness of the soil bacterial community, especially the Beta proteobacteria-containing CIP-degrading bacteria; and the activities of catalase and urease in the rhizosphere of the high accumulator were significantly higher than those of the low accumulator. These results preliminarily revealed the mechanism of higher bioconcentration and removal of CIP in the rhizosphere of the high CIP accumulation cultivar. |
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