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Unravelling calcium-alleviated aluminium toxicity in Arabidopsis thaliana: Insights into regulatory mechanisms using proteomics

文献类型： 外文期刊

作者： Chen, Juan 1 ; Duan, Rui-Xue 2 ; Hu, Wen-Jun 6 ; Zhang, Ni-Na 1 ; Lin, Xue-Yuan 1 ; Zhang, Jian-Hua 3 ; Zheng, Hai-Lei 2 ;

作者机构： 1.Northwest A&F Univ, State Key Lab Soil Eros & Dryland Farming Loess P, Yangling 712100, Shaanxi, Peoples R China

2.Xiamen Univ, Coll Environm & Ecol, Key Lab, Minist Educ Coastal & Wetland Ecosyst, Xiamen 361005, Fujian, Peoples R China

3.Chinese Univ Hong Kong, Sch Life Sci, Hong Kong, Peoples R China

4.Chinese Univ Hong Kong, State Key Lab Agrobiotechnol, Hong Kong, Peoples R China

5.Hong Kong Baptist Univ, Dept Biol, Hong Kong, Peoples R China

6.Zhejiang Acad Agr Sci, Hangzhou 310021, Zhejiang, Peoples R China

关键词： Aluminium toxicity; Calcium; Organic acid; Proteomics; TCA cycle; Signal transduction

期刊名称：JOURNAL OF PROTEOMICS （ 影响因子：4.044； 五年影响因子：4.02 ）

ISSN： 1874-3919

年卷期： 2019 年 199 卷

页码：

收录情况： SCI

摘要： Aluminium (Al) toxicity is a major limiting factor for plant productivity in acidic soils. Calcium (Ca) is an essential element and participates in various physiological responses to environmental stress. Here, the aim of this work was to study the role of exogenous Ca in alleviating Al toxicity in Arabidopsis thaliana. For that we used the methods of physiology and proteomics. Results showed that Ca alleviated Al-induced growth inhibition and decreased Al accumulation. Proteomic analyses showed that 75 differentially expressed protein spots, including those related to organic acid metabolism, cell wall components, cellular transport, signal transduction and antioxidant activity, transcription and protein metabolism were identified during the response of Arabidopsis to Ca alleviated Al toxicity. Ca regulated tricarboxylic acid (TCA) cycle-related protein abundances and affected organic acid concentrations and related enzyme activities under Al stress. Vacuolar and mitochondrion adenosine triphosphate (ATP) synthase, and cell wall component-related proteins played important roles in Ca-alleviated Al toxicity. Ethylene-insensitive 3 (EIN3) participated in Ca-alleviated Al toxicity. Glutathione S-transferase (GST6) and glutathione S-transferase tau 19 (ATGSTU19) were associated with antioxidant activities induced by Ca under Al stress. Our results may contribute to an understanding of the functional mechanism by which Ca alleviates Al stress in plants. Significant Our results elucidated how Ca alleviate the effects of Al toxicity on the inhibition of plant growth and Al accumulation in plants using the proteomics and physiological methods, which may contribute to a better understanding of the molecular mechanism of Ca alleviation Al stress in plants.

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