| Protective effect of chitosan on photosynthesis and antioxidative defense system in edible rape (Brassica rapa L.) in the presence of cadmium. | |
Zong, Haiying; Liu, Song; Xing, Ronge ; Chen, Xiaolin; Li, Pengcheng
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| 2017-04-01 | |
| 发表期刊 | ECOTOXICOLOGY AND ENVIRONMENTAL SAFETY
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| 卷号 | 138页码:271-278 |
| 文章类型 | Article |
| 摘要 | Chitosan (CTS) induces plant tolerance against several abiotic stresses, including salinity and drought exposure. However, the role of CTS in cadmium (Cd)-induced stress amelioration is largely unknown. In the present study, a hydroponic pot experiment was conducted to study the roles of CTS with different molecular weight (Mw) (10 kDa, 5 kDa and 1 kDa) in alleviating Cd toxicity in edible rape (Brassica rapa L.). The results showed that Cd stress significantly decreased plant growth, leaf chlorophyll contents and increased the malondialdehyde (MDA) level in rape leaves. Foliar application of CTS promoted the plant growth and leaf chlorophyll contents, and decreased the malondialdehyde (MDA) level in edible rape leaves under Cd stress. The alleviation effect of CTS on toxicity was depended on its Mw and CTS with Mw of 1 kDa showed the best activity. Spraying 1 kDa CTS onto the leaves of edible rape under Cd-toxicity could decrease shoot Cd2+ concentration and improve photosynthetic characteristics of edible rape. Moreover, 1 kDa CTS also significantly enhanced non-enzymatic antioxidants (ascorbic acid) and enzyme activities (superoxide dismutase, catalase and guaiacol peroxidase) under Cd stress. Based on these findings, it can be concluded that application of exogenous CTS could be an effective approach to alleviate the harmful effects of Cd stress and could be explored in an agricultural production system. |
| 关键词 | Cd Chitosan EdibL. Rape (Brassica Rape L.) Photosynthetic Characteristics Antioxidant Defense System |
| DOI | 10.1016/j.ecoenv.2017.01.009 |
| 收录类别 | SCI |
| 语种 | 英语 |
| WOS记录号 | WOS:000394561600034 |
| 引用统计 | |
| 文献类型 | 期刊论文 |
| 版本 | 出版稿 |
| 条目标识符 | http://ir.qdio.ac.cn/handle/337002/136754 |
| 专题 | 海洋生物技术研发中心 |
| 作者单位 | Chinese Acad Sci, Inst Oceanol, Key Lab Expt Marine Biol, Qingdao 266071, Peoples R China |
| 第一作者单位 | 实验海洋生物学重点实验室 |
| 推荐引用方式 GB/T 7714 | Zong, Haiying,Liu, Song,Xing, Ronge,et al. Protective effect of chitosan on photosynthesis and antioxidative defense system in edible rape (Brassica rapa L.) in the presence of cadmium.[J]. ECOTOXICOLOGY AND ENVIRONMENTAL SAFETY,2017,138:271-278. |
| APA | Zong, Haiying,Liu, Song,Xing, Ronge,Chen, Xiaolin,&Li, Pengcheng.(2017).Protective effect of chitosan on photosynthesis and antioxidative defense system in edible rape (Brassica rapa L.) in the presence of cadmium..ECOTOXICOLOGY AND ENVIRONMENTAL SAFETY,138,271-278. |
| MLA | Zong, Haiying,et al."Protective effect of chitosan on photosynthesis and antioxidative defense system in edible rape (Brassica rapa L.) in the presence of cadmium.".ECOTOXICOLOGY AND ENVIRONMENTAL SAFETY 138(2017):271-278. |
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