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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
2017-04-01
Source PublicationECOTOXICOLOGY AND ENVIRONMENTAL SAFETY
Volume138Pages:271-278
SubtypeArticle
AbstractChitosan (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.
KeywordCd Chitosan EdibL. Rape (Brassica Rape L.) Photosynthetic Characteristics Antioxidant Defense System
DOI10.1016/j.ecoenv.2017.01.009
Indexed BySCI
Language英语
WOS IDWOS:000394561600034
Citation statistics
Cited Times:16[WOS]   [WOS Record]     [Related Records in WOS]
Document Type期刊论文
Version出版稿
Identifierhttp://ir.qdio.ac.cn/handle/337002/136754
Collection海洋生物技术研发中心
AffiliationChinese Acad Sci, Inst Oceanol, Key Lab Expt Marine Biol, Qingdao 266071, Peoples R China
First Author AffilicationKey Laboratory of Experimental Marine Biology, Institute of Oceanology, Chinese Academy of Sciences
Recommended Citation
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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