Induction of enzymatic scavengers of active oxygen species in rice in response to infection by Rhizoctonia solani

V. Paranidharan*, A. Palaniswami, P. Vidhyasekaran, R. Velazhahan

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

17 Citations (Scopus)

Abstract

Changes in the activities of peroxidase, ascorbate peroxidase, catalase and superoxide dismutase in rice in response to infection by Rhizoctonia solani were studied. A significant increase in peroxidase activity was observed in R. solani-inoculated rice leaf sheaths 1 day after inoculation and the maximum enzyme activity was recorded 3 days after inoculation at which period a 3-fold increase in peroxidase activity was observed compared to the untreated control. Three peroxidase isozymes viz., PO-4, PO-5 and PO-6 were induced in rice upon infection by R. solani. Ascorbate peroxidase and catalase activities significantly increased 1-2 days after inoculation and the maximum enzyme activities were recorded 5 days after inoculation. Superoxide dismutase activity increased significantly 2 days after inoculation and increased progressively, reaching four times the control value at 7 days after inoculation.

Original languageEnglish
Pages (from-to)91-96
Number of pages6
JournalActa Physiologiae Plantarum
Volume25
Issue number1
Publication statusPublished - 2003

Keywords

  • Ascorbate peroxidase
  • Catalase
  • Oryza sativa
  • Peroxidase
  • Rhizoctonia solani
  • Superoxide dismutase

ASJC Scopus subject areas

  • Physiology
  • Agronomy and Crop Science
  • Plant Science

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