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The effect of pH and composition of test solutions on the inhibitory activity of wyerone acid towards germination of fungal spores
Author(s) -
DEVERALL B. J.,
ROGERS PAMELA M.
Publication year - 1972
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.1744-7348.1972.tb01297.x
Subject(s) - botrytis cinerea , vicia faba , biology , germination , spore , conidium , botany , spore germination , fungi imperfecti , botrytis , food science , horticulture
SUMMARY Wyerone acid at 100μg/ml prevented germination of conidia of Botrytis cinerea Fr. in aqueous extracts of leaves of Vicia faba L., but it was inactive in water and some synthetic nutrient solutions though antifungal activity appeared when the pH of these media was adjusted to 4.0 or 4.5. In pollen diffusates ( V.faba or Nicotiana glutinosd ) wyerone acid had little activity even at pH 4.0. In malt extract at pH 4.5 wyerone acid was active against several other plant pathogenic fungi but not against B. cinerea. It was concluded that both pH and unknown components of natural media affected the fungitoxicity of wyerone acid.