|
| Effects of different forms of antimony on the growth and root morphology of rice plant |
| Received:September 18, 2016 |
| View Full Text View/Add Comment Download reader |
| KeyWord:different forms of antimony;rice;toxicity;root morphology;absorption |
| Author Name | Affiliation | E-mail | | LEI Lei | Institute of Agro-Environmental Protection, The Ministry of Agriculture, Tianjin 300191, China
Innovation Team of Remediation of Heavy Metal Contaminated Farmland Soil, Chinese Academy of Agricultural Sciences, Tianjin 300191, China
Agricultural College, Guangxi University, Nanning 530004, China | | | WU Qian-hua | Institute of Agro-Environmental Protection, The Ministry of Agriculture, Tianjin 300191, China
Innovation Team of Remediation of Heavy Metal Contaminated Farmland Soil, Chinese Academy of Agricultural Sciences, Tianjin 300191, China
Agricultural College, Guangxi University, Nanning 530004, China | | | LÜ Hai-qin | Institute of Agro-Environmental Protection, The Ministry of Agriculture, Tianjin 300191, China
Innovation Team of Remediation of Heavy Metal Contaminated Farmland Soil, Chinese Academy of Agricultural Sciences, Tianjin 300191, China
College of Resources and Environment, Huazhong Agricultural University, Wuhan 430070, China | | | WANG Rui-gang | Institute of Agro-Environmental Protection, The Ministry of Agriculture, Tianjin 300191, China
Innovation Team of Remediation of Heavy Metal Contaminated Farmland Soil, Chinese Academy of Agricultural Sciences, Tianjin 300191, China | | | DING Yong-zhen | Institute of Agro-Environmental Protection, The Ministry of Agriculture, Tianjin 300191, China | | | XU Ying-ming | Institute of Agro-Environmental Protection, The Ministry of Agriculture, Tianjin 300191, China
Innovation Team of Remediation of Heavy Metal Contaminated Farmland Soil, Chinese Academy of Agricultural Sciences, Tianjin 300191, China | | | FAN Zhi-lian | Agricultural College, Guangxi University, Nanning 530004, China | | | MO Liang-yu | Agricultural College, Guangxi University, Nanning 530004, China | | | FENG Ren-wei | Institute of Agro-Environmental Protection, The Ministry of Agriculture, Tianjin 300191, China
Innovation Team of Remediation of Heavy Metal Contaminated Farmland Soil, Chinese Academy of Agricultural Sciences, Tianjin 300191, China
Agricultural College, Guangxi University, Nanning 530004, China
College of Resources and Environment, Huazhong Agricultural University, Wuhan 430070, China | frwzym@aliyun.com |
|
| Hits: 2993 |
| Download times: 4086 |
| Abstract: |
| This study was conducted to investigate the effects of different forms of antimony(antimonite[Sb(Ⅲ)] and antimonate[Sb(Ⅴ)]) on Sb concentration in different organs of rice plant(Fengmeizhan), plant growth and plant root morphology using a hydroponic culture system containing Espino nutrient solution. The results show that the additions of Sb(Ⅲ) and Sb(Ⅴ) both showed a negative effect on the growth of rice plants, and the toxicity of Sb(Ⅲ) is higher than that of Sb(Ⅴ) to this rice plant. The supplementation of Sb(Ⅲ) and Sb(Ⅴ) to the solution significantly enhanced the Sb concentrations in all organs of this rice plant, and most uptake Sb was concentrated in the roots. This rice plants showed a weaker ability to transport Sb(Ⅴ) from the roots to the shoots relative to Sb(Ⅲ), which resulted in the shoot Sb concentration of this rice plant subjected to Sb(Ⅲ) exposure being higher, but root Sb concentration being lower than that subjected to Sb(Ⅴ). The addition of Sb(Ⅲ) significantly reduced most tested parameters of root morphology, including root length, root average area, root volume, root tip number and root fork number. However, only 20 mg·L-1 Sb(Ⅴ) remarkably reduced the root average area, root diameter and root fork number. Above results suggested that the rice plant might alter the root morphology to adapt the Sb exposure, and reduce the Sb uptake via reducing the root average area and root fork number. With the increasing Sb(Ⅲ) levels in the solution, the fine root proportion decreased from 52.1% to 41.5%, and the medium root proportion increased from 45.2% to 55.2%, indicating that the rice plant could reduce the Sb uptake through enhancing the coarseness of root exposing to Sb(Ⅲ). However, the addition of Sb(Ⅴ) showed a limited effect on the proportions of fine roots and medium roots, which fell into the range of 52.1%~56.8% and 41.7%~45.2%, respectively. |
|
|
|
