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Cereal Research Communications

, Volume 46, Issue 1, pp 31–40 | Cite as

Effect of Cerium (Ce) on the Redox States of Ascorbate and Glutathione through Ascorbate-glutathione Cycle in the Roots of Maize Seedlings under Salt Stress

  • H. Hu
  • C. ShanEmail author
Physiology

Abstract

This study investigated the effect of cerium (Ce) on the ascorbate-glutathione (AsA-GSH) cycle in the roots of maize seedlings under salt stress. The results showed that salt stress significantly increased the activities of ascorbate peroxidase (APX) and monodehydroascorbate reductase (MDHAR), malondialdehyde (MDA) content and electrolyte leakage (EL) in the roots of maize seedlings, compared to the control. However, salt stress significantly decreased plant height, dry weight of root and shoot, the activities of glutathione reductase (GR) and dehydroascorbate reductase (DHAR), and the ratios of AsA/DHA and GSH/GSSG in the roots of maize seedlings, compared to the control. Pretreatment with cerium nitrate (Ce(NO3)3) significantly increased plant height, dry weight of root and shoot, the activities of above four enzymes, and the ratios of AsA/DHA and GSH/GSSG under salt stress, compared to salt stress alone. Pretreatment with Ce(NO3)3 significantly decreased MDA content and EL induced by salt stress, compared to salt stress alone. Meanwhile, application of Ce(NO3)3 to the control also significantly increased plant height, dry weight of root and shoot, the activities of above four enzymes and the ratios of AsA/DHA and GSH/GSSG, and decreased MDA content and EL, compared with control. Our results suggested that Ce(NO3)3 alleviated salt stress-induced oxidative damage by improving AsA-GSH cycle in maize roots.

Keywords

salt stress cerium nitrate ascorbate-glutathione cycle maize root 

Abbreviations

APX

ascorbate peroxidase

GR

glutathione reductase

DHAR

dehydroascorbate reductase

MDHAR

monodehydroascorbate reductase

GSH

reduced glutathione

AsA

reduced ascorbic acid

MDA

malondialdehyde

EL

electrolyte leakage

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Notes

Acknowledgement

This study was funded by the Science and Technology Program of Henan Province (142102110041).

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Copyright information

© Akadémiai Kiadó, Budapest 2018

Authors and Affiliations

  1. 1.Henan Institute of Science and TechnologyXinxiang, HenanChina
  2. 2.Collaborative Innovation Center of Modern Biological BreedingHenan Province, XinxiangChina

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