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| The effect of inoculating Burkholderia sp. D54 on cadmium uptake and accumulation in Sedum alfredii Hance |
| Received:October 08, 2016 |
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| KeyWord:Sedum alfredii Hance;cadmium;Burkholderia sp.;uptake;accumulation |
| Author Name | Affiliation | E-mail | | ZHANG Ya-jing | College of Life Science, Tianjin Normal University, Tianjin 300387, China
Agro-Environmental Protection Institute, Ministry of Agriculture, Tianjin 300191, China | | | MA Cheng-cang | College of Life Science, Tianjin Normal University, Tianjin 300387, China | | | GUO Jun-kang | School of Environmental Science and Engineering, Shaanxi University of Science & Technology, Xi'an 710021, China | | | HAN Lei | Agro-Environmental Protection Institute, Ministry of Agriculture, Tianjin 300191, China | | | FENG Ren-wei | Agro-Environmental Protection Institute, Ministry of Agriculture, Tianjin 300191, China | | | FENG Xue-min | Agro-Environmental Protection Institute, Ministry of Agriculture, Tianjin 300191, China | | | CAO Yun-qing | Agro-Environmental Protection Institute, Ministry of Agriculture, Tianjin 300191, China
College of Agronomy & Resources and Environment, Tianjin Agricultural University, Tianjin 300384, China | | | WANG Rui-gang | Agro-Environmental Protection Institute, Ministry of Agriculture, Tianjin 300191, China | 3761520835@sina.com |
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| Abstract: |
| A water culture experiment was carried out to investigate the effect of inoculating Burkholderia sp. D54 on Cd, Zn, Fe, Mg and Mn content in different organ, Cd2+ dynamic absorption of root tips, and Cd transfer factor(TF) in hyperaccumulating ecotype of Sedum alfredii(HE) and non hyperaccumulating ecotype of Sedum alfredii(NHE) using a non-invasive micro-test technique etc. Results showed that the Cd and Zn contents in the stems and leaves, the Cd TF of stem/root and leaf/root, the Cd2+ influx rate in different locations of roots in HE were significantly higher than those in NHE. The addition of Cd increased the content of Fe and Zn in roots, stems and leaves of HE and NHE, as well as the content of Mg in the stems of HE and NHE. In addition, the addition of Cd significantly reduced the content of Mn in the roots, stems and leaves of HE, but significantly increased the content of Mn in roots and stems of NHE. Inoculating Burkholderia sp. D54 significantly reduced the content of Cd, Fe, Mg, Mn and Zn in the stems and leaves, the Cd TF of stem/root and leaf/root, the Cd2+ influx rate in different locations of roots in HE and NHE. This indicated that the ability of HE to transport and accumulate Cd was significantly higher than that of NHE, which was closely related to the stronger ability to absorb Cd in the roots of HE. The addition of Cd promoted the accumulation of Fe, Mg and Zn in HE and NHE. However, the addition of Cd inhibited the Mn accumulation in HE but enhanced that in NHE, which may be related to Cd and Mn competition in HE. Inoculating Burkholderia sp. D54 reduced the uptake and accumulation of Cd, Fe, Mg, Mn and Zn. |
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