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| Effect of foliar and root exposure of AgNP on the uptake and translocation of soybean(Glycine max L. xudou16) |
| Received:July 12, 2016 |
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| KeyWord:nanosilver;soybean;uptake;transport |
| Author Name | Affiliation | E-mail | | CHEN Yuan-zhen | School of Resources and Environment, Anhui Agricultural University, Hefei 230036, China
Key Laboratory of Soil Environment and Pollution Remediation, Institute of Soil Science, Chinese Academy of Sciences, Nanjing 210008, China | | | SI You-bin | School of Resources and Environment, Anhui Agricultural University, Hefei 230036, China | youbinsi@ahau.edu.cn | | DANG Fei | Key Laboratory of Soil Environment and Pollution Remediation, Institute of Soil Science, Chinese Academy of Sciences, Nanjing 210008, China | | | LI Min | Key Laboratory of Soil Environment and Pollution Remediation, Institute of Soil Science, Chinese Academy of Sciences, Nanjing 210008, China | | | ZHOU Dong-mei | Key Laboratory of Soil Environment and Pollution Remediation, Institute of Soil Science, Chinese Academy of Sciences, Nanjing 210008, China | |
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| Abstract: |
| In order to access accurately the impact of released AgNP on crops growth into the farmland ecosystem, a soybean(Glycine max L. xudou16) was treated as the testing plant, exposed by AgNP(10 mg·L-1) and AgNO3(1 mg·L-1) in routes of foliar, root and their combined exposure for 14 days respectively. Irrespective of exposure routes, Ag accumulation in new leaves(which were not exposed to AgNP) were 0.06~1.03 μg·g-1 in above three exposure routes, while Ag accumulation in roots were 1.07~1.47 μg·g-1 in foliar exposure route, indicating that AgNP could be taken up and translocated within the soybean. Compared with the transfer efficient of Ag by foliar exposure, those by root exposure were much higher(64.5~140 times). In all exposure routes, the transfer efficient of AgNO3 treatment was higher than that of AgNP treatment(2.5~25 times), suggesting that both the exposure route and the silver species(AgNP or AgNO3) affected the accumulation of Ag in soybean leaves. Consequently, both of the exposure route and Ag species should be concerned when accessing the risk of AgNP on crops groth. |
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