Abstract
Three new plant growth regulatory sesquiterpenoids were isolated from the Lactarius repraesentaneus fungus. Their structures were elucidated to be a protoilludene sesquiterpene, namely repraesentin A (1), and two related sesquiterpenes, namely repraesentins B (2) and C (3). Compounds 1-3 showed promotion activities toward the radicle elongation of lettuce seedlings by 136%, 118% and 184% at 67 ppm, respectively.
MeSH terms
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Fungi / chemistry*
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Hydrogen Bonding
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Lactuca / drug effects
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Lactuca / growth & development
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Magnetic Resonance Spectroscopy
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Molecular Structure
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Plant Growth Regulators / chemistry
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Plant Growth Regulators / isolation & purification*
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Plant Growth Regulators / pharmacology*
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Seedlings / drug effects
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Seedlings / growth & development
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Sesquiterpenes / chemistry
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Sesquiterpenes / isolation & purification*
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Sesquiterpenes / pharmacology*
Substances
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Plant Growth Regulators
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Sesquiterpenes
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repraesentin A
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repraesentin B
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repraesentin C