| 苯并[a]芘污染土壤的丛枝菌根真菌强化植物修复作用研究 |
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| 引用本文： | 刘世亮,骆永明,丁克强,李华,吴龙华,邢维芹,宋静,曹志洪,陶澍.苯并[a]芘污染土壤的丛枝菌根真菌强化植物修复作用研究[J].土壤学报,2004,41(3):336-342. |
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| 作者姓名： | 刘世亮 骆永明 丁克强 李华 吴龙华 邢维芹 宋静 曹志洪 陶澍 |
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| 作者单位： | 1. 中国科学院南京土壤研究所土壤与环境生物修复研究中心,南京,210008
2. 北京大学环境学院,北京,100871 |
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| 基金项目： | 国家自然科学基金重点项目 ( 4 0 0 3 10 10 )，国家重点基础研究发展规划项目 ( 2 0 0 2CB410 80 9)，中国科学院南京土壤研究所土壤与环境联合开放研究实验室项目资助 |
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| 摘 要： | 研究了种植紫花苜蓿 (MedicagosativaL )在接种和不接种菌根真菌 (GlomuscaledoniumL )情况下对土壤中苯并 a]芘 (Ba]P)的降解动态。历经 90天的温室盆栽试验表明 ,较高浓度 (10 0mgkg-1)Ba]P能降低菌根真菌对植物根的侵染率。种植紫花苜蓿和接种菌根真菌能促进土壤中可提取态Ba]P的降解 ,在接种情况下 ,有植物时对三种浓度 (1mgkg-1,10mgkg-1,10 0mgkg-1)Ba]P的降解率分别达 86 2 %、86 6 %、5 7 0 % ;而没有植物时Ba]P的降解率为 5 3 5 %、5 3 0 %、33 0 %。不接菌根真菌时的降解率比接菌根真菌的低得多 ,不接种菌根真菌时 ,有植物的Ba]P降解率分别达 75 9%、77 7%、5 3 4 % ;而不种植物的降解率分别为 5 4 9%、5 2 6 %、34 1% ,低、中浓度 (1mgkg-1,10mgkg-1)两处理的降解率明显地高于高浓度处理(p <0 0 5 )。Ba]P添加对土壤中多酚氧化酶活性有较大的影响 ,特别是高浓度Ba]P处理土壤的酶活性明显地低于其它三个处理 ,接种菌根真菌能够提高土壤中的酶活性 ,从而促进了土壤中Ba]P的降解。
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| 关 键 词： | 菌根真菌 紫花苜蓿 苯并[a]芘 降解率 多酚氧化酶 |
| 收稿时间： | 2003/4/21 0:00:00 |
| 修稿时间： | 2003/10/31 0:00:00 |
ENHANCED PHYTOREMEDIATION OF BENZO [a]PYRENE CONTAMINATED SOIL WITH ARBUSCULAR MYCORRHIZAL FUNGI |
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| Liu Shiliang,Luo Yongming,Ding Keqiang,Li Hu,Wu Longhu,Xing Weiqin,Song Jing,Cao Zhihong and Tao Shu.ENHANCED PHYTOREMEDIATION OF BENZO [a]PYRENE CONTAMINATED SOIL WITH ARBUSCULAR MYCORRHIZAL FUNGI[J].Acta Pedologica Sinica,2004,41(3):336-342. |
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| Authors: | Liu Shiliang Luo Yongming Ding Keqiang Li Hu Wu Longhu Xing Weiqin Song Jing Cao Zhihong and Tao Shu |
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| Affiliation: | Soil and Environment Bioremediation Research Centre, Institute of Soil Science, Chinese Academy of Sciences, Nanjing 210008, China;Soil and Environment Bioremediation Research Centre, Institute of Soil Science, Chinese Academy of Sciences, Nanjing 210008, China;Soil and Environment Bioremediation Research Centre, Institute of Soil Science, Chinese Academy of Sciences, Nanjing 210008, China;Soil and Environment Bioremediation Research Centre, Institute of Soil Science, Chinese Academy of Sciences, Nanjing 210008, China;Soil and Environment Bioremediation Research Centre, Institute of Soil Science, Chinese Academy of Sciences, Nanjing 210008, China;Soil and Environment Bioremediation Research Centre, Institute of Soil Science, Chinese Academy of Sciences, Nanjing 210008, China;Soil and Environment Bioremediation Research Centre, Institute of Soil Science, Chinese Academy of Sciences, Nanjing 210008, China;Soil and Environment Bioremediation Research Centre, Institute of Soil Science, Chinese Academy of Sciences, Nanjing 210008, China;College of Environmental Sciences, Peking University, Beijing 100871, China |
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| Abstract: | This paper studied degradation of benzoapyrene (BaP) in soils with and without alfalfa (Medicago sativa L. ) and with and without the inoculation of arbuscular mycorrhizal (AM) fungi (Glomus caledonium L. ). After a 90 day incubation period this pot experiment showed that: a higher concentration (100 mg kg -1 ) of BaP decreased the frequency (%) of arbuscular mycorrhizal roots on alfalfa. It also revealed that alfalfa and AM fungi enhanced degradation of BaP in the soils. With AM fungi and alfalfa, BaP having initial concentrations of 1 mg kg -1 , 10 mg kg -1 , and 100 mg kg -1 experienced degradation rates of 86.2%, 86.6%, and 57. 0%, respectively. However, with AM fungi and no alfalfa, the degradation rates of BaP having the same initial concentrations were 53.5%, 53.0%, and 33. 0%, respectively. The results also showed that the degradation rate of BaP in soils without inoculated fungi was lower than that of soils with the inoculation of AM fungi. Without AM fungi inoculation on alfalfa BaP having initial concentrations of 1 mg kg -1 , 10 mg kg -1 , and 100 mg kg -1 had degradation rates of 75.9%, 77.7%, and 53.4%, respectively. Meanwhile, without AM fungi inoculation and without alfalfa, the degradation rates for BaP having the same initial concentrations were 54.9%, 52.6%, and 34.1%, respectively. In addition, the degradation rates for the low and middle concentration BaP treatments (1 mg kg -1 and 10 mg kg -1 ) were significantly higher than that of the high concentration BaP treatment (100 mg kg -1 ) (p<0.05). BaP added to the soil also significantly affected the activities of polyphenol oxidase. The enzyme activities in soils with higher concentrations of BaP were significantly lower than those of the other three treatments. Thus, the inoculated AM fungi could enhance the soil enzyme activities, thereby enhancing degradation of BaP in soils. |
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| Keywords: | Arbuscular mycorrhizal fungi Alfalfa Benzo[a]pyrene Degradation rate Polyphenol oxidase |
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