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Improvement in cadmium tolerance of edible rape (Brassica rapa L.) with exogenous application of chitooligosaccharide
Zong, Haiying1; Li, Kecheng1; Liu, Song1; Song, Lin2; Xing, Ronge1; Chen, Xiaolin1; Li, Pengcheng1
2017-08-01
发表期刊CHEMOSPHERE
卷号181页码:92-100
文章类型Article
摘要Cadmium (Cd) is one of the most toxic heavy metals, which is readily taken up by plant roots and has deleterious effects on crop yield and quality. The study investigated the potential cross-protection roles of chitooligosaccharide (COS) in alleviating Cd toxicity in edible rape (Brassica rapa L.) under greenhouse conditions. The results demonstrated that spraying COS onto the leaves of edible rape could promote the plant growth and leaf chlorophyll contents, decrease the malondialdehyde (MDA) level in leaves as well as the Cd2+ concentration in shoots and roots of edible rape under Cd stress. Moreover, exogenous COS could obviously enhance the activities of superoxide dismutase (SOD), catalase (CAT) and peroxidase (PDX) in edible rape leaves under Cd-toxicity. The alleviation effect of COS on Cd stress was concentration-dependent and COS of 50-100 mg L-1 showed the best activity. Subcellular distribution experiments further revealed that COS of 50 mg r1 decreased the proportion of Cd in the organelle fraction of leaves by 40.1% while increased the proportion of Cd in the soluble fraction by 13.2%. These results indicated that COS had a potential to enhance plant resistance to Cd through promoting antioxidant enzyme activities and altering Cd subcellular distribution. (C) 2017 Published by Elsevier Ltd.
关键词Chitooligosaccharide Cd Edible Rape (Brassica Rapa l) Antioxidant Enzymes Subcellular Distribution
DOI10.1016/j.chemosphere.2017.04.024
收录类别SCI
语种英语
WOS记录号WOS:000402343700011
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/337002/137087
专题实验海洋生物学重点实验室
海洋生物技术研发中心
作者单位1.Chinese Acad Sci, Inst Oceanol, Key Lab Expt Marine Biol, Qingdao 266071, Peoples R China
2.Qingdao Univ Sci & Technol, Qingdao 266042, Peoples R China
推荐引用方式
GB/T 7714
Zong, Haiying,Li, Kecheng,Liu, Song,et al. Improvement in cadmium tolerance of edible rape (Brassica rapa L.) with exogenous application of chitooligosaccharide[J]. CHEMOSPHERE,2017,181:92-100.
APA Zong, Haiying.,Li, Kecheng.,Liu, Song.,Song, Lin.,Xing, Ronge.,...&Li, Pengcheng.(2017).Improvement in cadmium tolerance of edible rape (Brassica rapa L.) with exogenous application of chitooligosaccharide.CHEMOSPHERE,181,92-100.
MLA Zong, Haiying,et al."Improvement in cadmium tolerance of edible rape (Brassica rapa L.) with exogenous application of chitooligosaccharide".CHEMOSPHERE 181(2017):92-100.
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