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| Effect of Biochar on Relieving Cadmium Stress and Reducing Accumulation in Super japonica Rice |
| ZHANG Zhen-yu, MENG Jun, DANG Shu , CHEN Wen-fu |
1、Liaoning Biochar Engineering & Technology Research Center, Shenyang 110866, P.R.China
2、Key Laboratory of Rice Biology and Breeding, Ministry of Agriculture/Key Laboratory of Northern Japonica Super Rice Breeding, Ministry of Education/Rice Research Institute, Shenyang Agricultural University, Shenyang 110866, P.R.China |
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摘要 It is of great importance to solve the threats induced by cadmium pollution on crops. This paper examined the effect of biochar on cadmium accumulation in japonica rice and revealed the mechanism underlying the response of protective enzyme system to cadmium stress. Biochar derived from rice straw was applied at two application rates under three cadmium concentrations. Shennong 265, super japonica rice variety, was selected as the test crop. The results indicated that cadmium content in above-ground biomass of rice increased with increasing soil cadmium concentrations, but the biochar application could suppress the accumulation of cadmium to some extent. Under high concentrations of cadmium, content of free proline and MDA (malondialdehyde) were high, so did the SOD (superoxide dismutase), POD (peroxidase) and CAT (catalase) activity in the flag leaf of rice. However, the protective enzyme activities remained at low level when biochar was added.
Abstract It is of great importance to solve the threats induced by cadmium pollution on crops. This paper examined the effect of biochar on cadmium accumulation in japonica rice and revealed the mechanism underlying the response of protective enzyme system to cadmium stress. Biochar derived from rice straw was applied at two application rates under three cadmium concentrations. Shennong 265, super japonica rice variety, was selected as the test crop. The results indicated that cadmium content in above-ground biomass of rice increased with increasing soil cadmium concentrations, but the biochar application could suppress the accumulation of cadmium to some extent. Under high concentrations of cadmium, content of free proline and MDA (malondialdehyde) were high, so did the SOD (superoxide dismutase), POD (peroxidase) and CAT (catalase) activity in the flag leaf of rice. However, the protective enzyme activities remained at low level when biochar was added.
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Received: 09 October 2013
Accepted: 12 March 2014
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| Fund: This study was supported by the National Natural Science Foundation of China (41201317), the Key Technologies R&D Program of China during the 12th Five-Year Plan period (2012BAD14B01), the Liaoning Science & Technology Project and the Key Platform Construction Plan for Science & Technology in Universities of Liaoning Province, China. |
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Corresponding Authors:
CHEN Wen-fu, E-mail: wfchen5512@163.com
E-mail: wfchen5512@163.com
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| About author: ZHANG Zhen-yu, Mobile: 15754540118, E-mail: zhangzhenyu1982@126.com |
Cite this article:
ZHANG Zhen-yu, MENG Jun, DANG Shu , CHEN Wen-fu.
2014.
Effect of Biochar on Relieving Cadmium Stress and Reducing Accumulation in Super japonica Rice. Journal of Integrative Agriculture, 13(3): 547-553.
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