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Cinnamaldehyde Facilitates Cadmium Tolerance by Modulating Ca2+ in Brassica rapa

文献类型： 外文期刊

作者： Cheng, Yanwei 1 ; Wang, Ning 2 ; Liu, Ruixian 3 ; Bai, Hongwu 4 ; Tao, Weichun 5 ; Chen, Jian 4 ; Shi, Zhiqi 4 ;

作者机构： 1.Luoyang Normal Univ, Coll Life Sci, Luoyang 471934, Peoples R China

2.Jiangsu Acad Agr Sci, Cent Lab, Nanjing 210014, Peoples R China

3.Jiangsu Acad Agr Sci, Inst Ind Crops, Nanjing 210014, Peoples R China

4.Jiangsu Acad Agr Sci, Inst Food Safety & Nutr, 50 Zhongling St, Nanjing 210014, Peoples R China

5.Grain & Oil Monitor Inst Huaian, Huaian 223001, Peoples R China

关键词： Brassica rapa; Cadmium; Calcium; Cinnamaldehyde; Heavy metal; Reactive oxygen species

期刊名称：WATER AIR AND SOIL POLLUTION （ 影响因子：2.52； 五年影响因子：2.574 ）

ISSN： 0049-6979

年卷期： 2021 年 232 卷 1 期

页码：

收录情况： SCI

摘要： Exogenous regulation of plant physiology is a kind of effective approach to help plant grow under Cd (cadmium)-contaminated environment. CA (cinnamaldehyde) is an environmental friendly natural compound with medicinal properties and antimicrobial activities. In this work, we found that CA was able to confer plant Cd tolerance by priming defense in the root of B. rapa. Pretreatment with CA attenuated the phytotoxicity induced by subsequent Cd stress, such as root growth inhibition, ROS accumulation, oxidative injury, and cell death in root tip. Cd stress decreased the intracellular Ca2+ level in roots, which could be enhanced by pretreatment with CA. Pretreatment with a Ca2+ chelator or a Ca2+ channel blocker blocked all the beneficial effects of CA on the increase in the intracellular Ca2+ level and the amelioration of physiological injury in roots under Cd stress. Correlation analysis combined with cluster analysis suggested that CA was able to prime plant defense by regulating endogenous Ca2+ in order to facilitate Cd tolerance. These results shed a new light on the novel role of CA in modulating plant resistant physiology against metal stress, which may extend our knowledge on both CA and plant Cd tolerance.

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