Australasian Plant Pathology

, Volume 32, Issue 3, pp 411–420 | Cite as

Antifungal compounds in Geraldton waxflower tissues

  • L. A. Terry
  • D. C. Joyce
  • B. P. S. Khambay


Geraldton waxflower is the most economically importantnative Australian cut flower export. Infection of wax flower by Botrytis cinerea can lead to unacceptable levels of flower abscission after harvest. An investigation was conducted into the nature and identities of constitutive antifungal compounds in flowers and leaves. Antifungal activity against B, cinerea (pathogen) and Cladosporium cladosporioides (bioassay organism) was observed in leaf and flower extracts. Leaf tissue contained less antifungal activity than flower tissue. Four antifungal compounds were common to the three different waxflower cultivars studied. Two antifungal compounds were identified as the sesquiterpene, globulol, and the monoterpene, grandinol. At least two unidentified phenolic compounds also demonstrated strong antifungal activity. Notwithstanding general similarities in antifungal profiles, it was evident from TLC bioassays that variations exist in some antifungal compounds between different wax flower cultivars.

Addition al keywords

Botrytis cinerea thin layer chromatography bioassay 


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Copyright information

© Australasian Plant Pathology Society 2003

Authors and Affiliations

  • L. A. Terry
    • 1
  • D. C. Joyce
    • 2
  • B. P. S. Khambay
    • 3
  1. 1.Plant Science Laboratory, Institute of BioScience and TechnologyCranfield University at SilsoeUK
  2. 2.Institute for Horticultural DevelopmentAgriculture VictoriaAustralia
  3. 3.Biological Chemistry DivisionRothamsted ResearchHarpendenUK

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