Plant physiology and biochemistry

Effect of Cerium on Growth and Antioxidant Protective Enzyme System of Arachis hypogaea Seedlings

  • XU Sheng ,
  • LIU Jia-dun ,
  • SHI He-ping
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  • (Guangdong Key Lab of Biotechnology for Plant Development, College of Life Science, South China Normal University, Guangzhou 510631, Guangdong China)

Received date: 2021-09-09

  Revised date: 2021-10-02

  Online published: 2021-10-30

Abstract

The effects of different concentrations of cerium nitrate on Arachis hypogaea seedling growth, flowering number and antioxidant enzymes peroxidase (POD), superoxide dismutase (SOD) activity and malondialdehyde (MDA) content were investigated by solution culture. The results showed that Cerium concentration below 20.0?mg·L–1 could promote the growth and flowering of peanut seedlings. Among the Ce concentrations tested, the best growth was obtained at 10.0 mg·L–1 cerium, where its biomass and flowering number were about 1.3 and 2.8?times that of the control. But Cerium concentration higher than 20.0 mg·L–1 inhibited the growth and reduced the number of flower buds. Cerium concentration lower than 20.0 mg·L–1 inhibited POD activity and reduced the content of malondialdehyde (MDA) in peanut seedlings, and the lowest POD activity and MDA content, which was about 47.51% and 20.76% of the control, were seen when addition of 10.0 mg·L–1 cerium into the culture solution. It was also found that less than 20.0 mg·L–1 cerium enhanced SOD activity in peanut seedlings, the highest SOD activity, which was about 2.0 times that of the control, was obtained at 5.0 mg·L–1 cerium in the culture solution.

Key words: Arachis hypogaea; cerium; growth; SOD; POD; MDA

Cite this article

XU Sheng , LIU Jia-dun , SHI He-ping . Effect of Cerium on Growth and Antioxidant Protective Enzyme System of Arachis hypogaea Seedlings[J]. Subtropical Plant Science, 2021 , 50(05) : 333 -340 . DOI: 10.3969/j.issn.1009-7791.2021.05.001

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