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The fungitoxicities of cuticular and cellular components of citrus lime leaves
Author(s) -
MARTIN J. T.,
BAKER E. A.,
BYRDE R. J. W.
Publication year - 1966
Publication title -
annals of applied biology
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.677
H-Index - 80
eISSN - 1744-7348
pISSN - 0003-4746
DOI - 10.1111/j.1744-7348.1966.tb03841.x
Subject(s) - biology , wax , furocoumarin , botany , rutaceae , lime , horticulture , biochemistry , dna , paleontology
SUMMARY Cuticular and cellular components of leaves of Citrus aurantifolia Swingle were tested for toxicity to Gloeosporium limetticola Clausen, responsible for the withertip disease. Cuticular waxes isolated from mature, resistant leaves showed little activity. A dimethoxy furocoumarin, isopimpinellin, isolated from the cellular components, was highly toxic, and ester and acidic fractions obtained from both young susceptible and mature resistant leaves showed some activity. The contents in the leaves and the toxicities in vitro of the active constituents suggest that they may contribute, to an important degree, to the defence of the leaf against G. limetticola.