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| Enhancement of atrazine degradation in soils caused by rhizosphere effects of Pennisetum |
| Received:October 14, 2016 |
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| KeyWord:Pennisetum;rhizosphere remediation;atrazine;soil microorganisms |
| Author Name | Affiliation | E-mail | | LIN Zhong | Guangdong Ocean University, Zhanjiang 524088, China | | | YANG Jie-wen | Guangdong Ocean University, Zhanjiang 524088, China | | | CAI Bin | Zhanjiang Entry-Exit Inspection and Quarantine Bureau, Zhanjiang 524088, China | | | ZHONG Lai-yuan | Guangdong Ocean University, Zhanjiang 524088, China | | | ZHANG Qian | Guangdong Ocean University, Zhanjiang 524088, China | | | LI Jin | Guangdong Ocean University, Zhanjiang 524088, China | | | LI Long-fan | Guangdong Ocean University, Zhanjiang 524088, China | | | CHEN Xiao-li | Guangdong Ocean University, Zhanjiang 524088, China | | | ZHEN Zhen | Guangdong Ocean University, Zhanjiang 524088, China | zz19830302@163.com |
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| Abstract: |
| This study investigated the effect of Pennisetum rhizosphere on the atrazine degradation in laterite soil, using pot experiment method. The results showed that Pennisetum had an excellent effect on promoting atrazine degradation, which was mainly contributed by its rhizosphere effect. After pot culture of 28 days, the removal rate of atrazine in Pennisetum rhizosphere soil was 52.70%, while the removal rate in non-rhizosphere soil was 37.60%. Soil itself had a potential of atrazine removal, the atrazine removal was given priority to with non-biodegradation in laterite soil at Zhanjiang, and the degradation rate was 16.90%. The biodegradation effect driven from the indigenous microbes was weaker than non-biodegradation, with 11.70% of degradation rate. The rhizosphere effect of Pennisetum significantly improved soil microorganism quantity and activity, increased the amount of cultivable bacteria, fungus and actinomyces in soils, especially the amount of cultivable bacteria, and improved the richness and evenness of the soil bacterial community. |
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