Experientia

, Volume 50, Issue 9, pp 840–842

Identification of a plant growth inhibiting iridoid lactone fromDuroia hirsuta, the allelopathic tree of the ‘Devil's Garden’

  • J. E. Page
  • S. Madriñán
  • G. H. N. Towers
Research Articles

DOI: 10.1007/BF01956467

Cite this article as:
Page, J.E., Madriñán, S. & Towers, G.H.N. Experientia (1994) 50: 840. doi:10.1007/BF01956467

Abstract

Bioactivity-directed fractionation of a root extract ofDuroia hirsuta (Rubiaceae), a toxic and potentially allelopathic understory tree from the western Amazon, has led to the isolation of the tetracyclic iridoid lactone, plumericin (1). Bioassays showing plumericin strongly inhibited lettuce radicle elongation at a concentration (IC50) of 35.8 μm/ml (123 μM). The isolation of a highly potent inhibitor of plant growth fromDuroia hirsuta supports the hypothesis that the lack of vegetation surrounding this tree is the result of allelopathy.

Key words

Duroia hirsuta Rubiaceae allelopathy plumericin iridoid lactone plant growth inhibition 

Copyright information

© Birkhäuser Verlag 1994

Authors and Affiliations

  • J. E. Page
    • 1
  • S. Madriñán
    • 2
  • G. H. N. Towers
    • 1
  1. 1.Botany DepartmentUniversity of British ColumbiaVancouverCanada
  2. 2.The Harvard University Herbaria, Harvard UniversityCambridge(USA)

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