In vitro antifungal activity of the tea tree (Melaleuca alternifolia) essential oil and its major components against plant pathogens

V. Terzi, C. Morcia, P. Faccioli, G. Valè, G. Tacconi, M. Malnati

Research output: Contribution to journalArticlepeer-review

Abstract

Aims: The aim of this study was to examine the effect of Melaleuca alternifolia essential oil (TTO) and its principal components on four cereal-pathogenic fungi. Methods and Results: The antimycotic properties of TTO and of terpinen-4-ol, γ-terpinen and 1,8-cineole (eucalyptol) were evaluated in vitro on Fusarium graminearum, Fusarium culmorum and Pyrenophora graminea. Moreover, barley leaves infected with Blumeria graminis were treated with whole TTO. All the tested fungi were susceptible to TTO and its components. Conclusions: TTO exerted a wide spectrum of antimycotic activity. Single TTO purified components were more active than the whole oil in reducing in vitro growth of fungal mycelium and, among the tested compounds, terpinen-4-ol was the most effective. Significance and Impact of the Study: TTO and its components can be considered potential alternative natural fungicides.

Original languageEnglish
Pages (from-to)613-618
Number of pages6
JournalLetters in Applied Microbiology
Volume44
Issue number6
DOIs
Publication statusPublished - Jun 2007

Keywords

  • Barley
  • Blumeria graminis f. sp. hordei
  • Essential oil
  • Fusarium culmorum
  • Fusarium graminearum
  • Melaleuca alternifolia
  • Pyrenophora graminea

ASJC Scopus subject areas

  • Applied Microbiology and Biotechnology
  • Water Science and Technology
  • Fluid Flow and Transfer Processes
  • Microbiology
  • Ecology

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