Spermidine enhanced the antioxidant capacity of rice seeds during seed aging

Qi Juan Hu, Mo Xian Chen, Tao Song, Chao Lin Cheng, Yuan Tian, Jin Hu, Jianhua ZHANG*

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

2 Citations (Scopus)

Abstract

Seed aging is a problem during long-term seed storage, affecting the commercial and germplasm value of seeds. In this study, a widely cultivated rice (Oryza sativa L.) cultivar, Huanghuazhan, was used to investigate the effects of exogenous spermidine (Spd) on accelerated aging (AA). The results showed that the speed of germination and the activities of catalase (CAT), ascorbate peroxidase (APX) and β-amylase were reduced by AA, and more H2O2 accumulated in aged seeds than in normal seeds. As compared with aged seeds pretreated with water, seed vigor and the gibberellic acid (GA) content in aged seeds pretreated with Spd were increased by 47% and 17%, respectively. Furthermore, antioxidant enzyme activity and related gene expression were also higher in aged seeds pretreated with Spd. It is speculated that CAT and APX are the two primary enzymes involved in the effects of Spd to AA. These results suggest that the adverse effect of AA stress on seeds may be partially alleviated by the application of exogenous Spd, which may affect the scavenging of reactive oxygen species.

Original languageEnglish
Pages (from-to)397-406
Number of pages10
JournalPlant Growth Regulation
Volume91
Issue number3
DOIs
Publication statusPublished - 1 Jul 2020

Scopus Subject Areas

  • Physiology
  • Agronomy and Crop Science
  • Plant Science

User-Defined Keywords

  • Ascorbate peroxidase
  • Catalase
  • Deterioration
  • Gene expression
  • Spermidine

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