Cis-jasmone is a natural oil extracted from plants. It is released by many flowers including jasmine, citrus, mint, raspberry, cinnamon and green tea.
Jasmone exists in two different isomeric forms around the pentenyl double bond, cis-jasmone [(Z)-jasmone] and trans-jasmone [(E)-jasmone]. The natural extract contains only the cis form, while the synthetic jasmone is a mixture of the two, with the cis form predominant. These two forms have similar physiochemical properties.
For various insects, cis-jasmone is both an attractant and a repellent, and thus can be used as a nematicide to control plant-parasitic nematodes. Cis-jasmone also activates nematode and insect resistance genes in various field crops and vegetables, inducing plant defense systems.
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