Calcium application enhances growth and alleviates the damaging effects induced by Cd stress in sesame ( Sesamum indicum L.)

Journal of plant interactions

article

Elsayed Fathi Abd_Allah¹  Abeer Hashem²  Abdulaziz A. Alqarawi¹  Stephan Wirth⁴  Dilfuza Egamberdieva⁴ 

[1] Plant Production Department, College of Food & Agricultural Sciences, King Saud University;Botany & Microbiology Department, College of Science, King Saud University;Mycology and Plant Disease Survey Department, Plant Pathology Research Institute, Agriculture Research Center;Institute of Landscape Biogeochemistry, Leibniz Centre for Agricultural Landscape Research (ZALF)

关键词: Sesamum indicum;    lipids;    antioxidants;    osmolytes;    calcium;    cadmium;   

DOI  :  10.1080/17429145.2017.1319500

学科分类：纳米科学和纳米技术

来源: Taylor & Francis

【 摘 要 】

In this study, the effects of calcium (Ca 2+ ) application on acquired systemic tolerance mechanism to cadmium (Cd) stress in sesame ( Sesamum indicum L.) were studied. The Cd stress reduced the root and shoot growth of sesame, and plant contents of photosynthetic pigments; however, the application of Ca 2+ improved these parameters under Cd stress condition. The hydrogen peroxide, malondialdehyde and soluble sugar contents were higher under Cd stress, and were reduced by Ca 2+ treatment. The antioxidant enzyme activities in the leaves of sesame, superoxide dismutase (SOD), peroxidase (POD), catalase (CAT), ascorbate peroxidase (APX) and glutathione reductase (GR) were higher under Cd stress, whereas reduced concentration was observed in Ca 2+ -treated plants. Cd stress increased the contents of diacylglycerol and sterol ester; however Ca 2+ treatment resulted in a significant increase in phosphatidylcholine, phosphatidylethanolamine, phosphatidylglycerol, phosphatidylinositol and phosphatidylserine. Our results indicated that application of calcium enables sesame plants to withstand the deleterious impact of cadmium through upregulating acquired systemic tolerance system as lipid fractions (galactolipids, phospholipids, neutral lipids), antioxidant enzymes (SOD, POD, CAT, APX, GR) hence protect membrane functions.

【 授权许可】

CC BY|CC BY-NC