Wild parsnip furanocoumarins

There is some evidence for induction in pasture plants. A furanocoumarin, isopimpinellin, increases in floral stands of wild parsnip, Pastinaca sattva, after clipping that simulates herbivory (Nitao, 1988). 

Berenbaum, M. (1981). Patterns of furanocoumarin production and insect herbivory in a population of wild parsnip Pastinaca sativa L.). Oecologia 49,236-244. 

Zangerl, A.R. and Berenbaum, M.R., Furanocoumarins in wild parsnip effects of photosynthetically active radiation, ultraviolet light, and nutrients, Ecology, 68, 516, 1987. 

Berenbaum, M. R. and A. R. Zangerl, Variation in seed furanocoumarin content within the wild parsnip (Pastinaca sativa). Phytochemistry, 25, 659-661 (1986). 

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