6,7-Dimethoxycoumarin, a citrus phytoalexin conferring resistance against Phytophthora gummosis

Uzi Afek*, Abraham Sztejnberg, Shmuel Carmely

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

51 Scopus citations


6,7-Dimethoxycoumarin was isolated from the bark of citrus trunks, branches and fruit peels following inoculation with the fungus Phytophthora citrophthora. The compound inhibited growth in vitro of Phytophthora citrophthora, Verticillium dahliae, Penicillium digitatum, P. italicum, Colletotrichum gloeosporioides, Diplodia natalensis and Hendersonula toruloidea.

Original languageEnglish
Pages (from-to)1855-1856
Number of pages2
Issue number8
StatePublished - 17 Jul 1986


  • Citrus spp.
  • coumarin
  • esculetin dimethyl ether.
  • phytoalexin
  • Phytophthora citrophthora
  • Poncirus trifoliata
  • Pythiaceae
  • resistance
  • Rutaceae
  • scoparone


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