Salicylic acid treatment of pea seeds induces its de novo synthesis

G. Szalai, Szabina Horgosi, Vilmos Soós, Imre Majláth, E. Balázs, T. Janda

Research output: Contribution to journalArticle

29 Citations (Scopus)

Abstract

Salicylic acid (SA), which is known as a signal molecule in the induction of defense mechanisms in plants, could be a promising compound for the reduction of stress sensitivity. The aim of the present work was to investigate the distribution of SA in young pea (Pisum sativum L.) seedlings grown from seeds soaked in 3H-labeled SA solution before sowing, and to study the physiological changes induced by this seed treatment. The most pronounced changes in SA levels occurred in the epicotyl and the seeds. Radioactivity was detected only in the bound form of SA, the majority of which was localized in the seeds, and only a very low level of radioactivity was detected in the epicotyl. SA pre-treatment increased the expression of the chorismate synthase and isochorismate synthase genes in the epicotyl. Pre-soaking the seeds in SA increased the activities of some antioxidant enzymes, namely ascorbate peroxidase (EC 1.11.1.11) and guaiacol peroxidase (EC 1.11.1.7) and the level of ortho-hydroxycinnamic acid, but decreased the level of polyamines. These results suggest that the increased level of free and bound SA detected in plants growing from seeds soaked in SA solution before sowing is the product of de novo synthesis, rather than having been taken up and mobilized by the plants.

Original languageEnglish
Pages (from-to)213-219
Number of pages7
JournalJournal of Plant Physiology
Volume168
Issue number3
DOIs
Publication statusPublished - Feb 15 2011

Fingerprint

Salicylic Acid
Peas
salicylic acid
peas
Seeds
synthesis
seeds
epicotyls
chorismate synthase
ascorbate peroxidase
Radioactivity
peroxidase
sowing
presoaking
Ascorbate Peroxidases
coumaric acids
Polyamines
seed treatment
polyamines
Seedlings

Keywords

  • Antioxidant enzyme
  • Gene expression
  • O-Coumaric acid
  • Polyamines
  • Salicylic acid

ASJC Scopus subject areas

  • Plant Science
  • Physiology
  • Agronomy and Crop Science

Cite this

Salicylic acid treatment of pea seeds induces its de novo synthesis. / Szalai, G.; Horgosi, Szabina; Soós, Vilmos; Majláth, Imre; Balázs, E.; Janda, T.

In: Journal of Plant Physiology, Vol. 168, No. 3, 15.02.2011, p. 213-219.

Research output: Contribution to journalArticle

Szalai, G. ; Horgosi, Szabina ; Soós, Vilmos ; Majláth, Imre ; Balázs, E. ; Janda, T. / Salicylic acid treatment of pea seeds induces its de novo synthesis. In: Journal of Plant Physiology. 2011 ; Vol. 168, No. 3. pp. 213-219.
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