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| Effect of Arbuscular Mycorrhizal Fungi on Antimony Uptake and Antioxidative Responses of Medicago Sativa in Antimony Polluted Soil |
| Received:February 05, 2010 |
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| KeyWord:arbuscular mycorrhizal fungi;antimony;antioxidant enzyme system;Medicago Sativa |
| Author Name | Affiliation | E-mail | | CHEN Zhi-peng | College of Resource and Environment, Hunan Agricultural University, Changsha 410128, China | | | WEI Yuan | State Key Laboratory of Environmental Criteria and Risk Assessment, Chinese Research Academy of Environmental Sciences, Beijing 100012, China | | | SHANGGUAN Yu-xian | State Key Laboratory of Environmental Criteria and Risk Assessment, Chinese Research Academy of Environmental Sciences, Beijing 100012, China | | | HOU Hong | State Key Laboratory of Environmental Criteria and Risk Assessment, Chinese Research Academy of Environmental Sciences, Beijing 100012, China | houhong@craes.org.cn | | ZENG Qing-ru | College of Resource and Environment, Hunan Agricultural University, Changsha 410128, China | qrzeng@163.com |
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| Abstract: |
| Under greenhouse pot experiment conditions, mixed arbuscular mycorrhizal(AM) fungi(Funneliformis mosseas and Glomus versiforme) were inoculated on Medicago Sativa(M. sativa), and the effects on the biomass, accumulation of antimony(Sb) and antioxidant enzyme system of the plant were investigated. The experiments were conducted using soil treated with Sb at 0, 500 and 1000 mg·kg-1. The results indicated that the inoculation greatly promoted the accumulation of Sb in M. sativa. Compared to the non-inoculated treatment, the Sb concentrations in the shoots and roots of M. sativa increased 71% and 46% under 500 mg·kg-1 Sb-treated soil, and 37%, 34% under 1000 mg·kg-1 Sb-treated soil, respectively. Inoculation also significantly enhanced the adsorption of phosphorus(P) in M. sativa, which may induced higher biomass of the plant. Meanwhile, Inoculation reduced the peroxidase(POD), superoxide dismutase(SOD) and catalase (CAT) activities in M. sativa. In conclusion, M. sativa inoculated with arbuscular mycorrhizal fungi were less sensitive to Sb stress than uninoculated plants. This results suggested that AMF play an important role in the uptake of Sb by plant, and also its resistance to Sb. |
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