Effect of volatile methyl jasmonate on the oxylipin pathway in tobacco, cucumber, and Arabidopsis

Sergei Avdiushko, Kevan P.C. Croft, Grayson C. Brown, D. Mike Jackson, Tom R. Hamilton-Kemp, David Hildebrand

Research output: Contribution to journalArticlepeer-review

70 Scopus citations

Abstract

The effect of atmospheric methyl jasmonate on the oxylipin pathway was investigated in leaves of tobacco (Nicotiana tabacum L.), cucumber (Cucumis sativa L.), and Arabidopsis thaliana (L.). Differential sensitivities of test plants to methyl jasmonate were observed. Thus, different concentrations of methyl jasmonate were required for induction of changes in the oxylipin pathway. Arabidopsis was the least and cucumber the most sensitive to methyl jasmonate. Methyl jasmonate induced the accumulation of lipoxygenase protein and a corresponding increase in extractable lipoxygenase activity. Atmospheric methyl jasmonate additionally induced hydroperoxide lyase activity and the enhanced production of several volatile six-carbon products. It is interesting that lipid hydroperoxidase activity, which is a measure of hydroperoxide lyase plus allene oxide synthase plus possibly other lipid hydroperoxide-metabolizing activities, was not changed by methyl jasmonate treatment. Methyl jasmonate selectively altered the activity of certain enzymes of the oxylipin pathway (lipoxygenase and hydroperoxide lyase) and increased the potential of leaves for greatly enhanced six-carbon-volatile production.

Original languageEnglish
Pages (from-to)1227-1230
Number of pages4
JournalPlant Physiology
Volume109
Issue number4
StatePublished - Dec 1995

ASJC Scopus subject areas

  • Physiology
  • Genetics
  • Plant Science

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