期刊
JOURNAL OF CHEMICAL ECOLOGY
卷 29, 期 6, 页码 1403-1415出版社
SPRINGER
DOI: 10.1023/A:1024265420375
关键词
Arabidopsis lyrata; Brassica spp.; Brassicaceae; glucosinolates; herbivory; horseradish; host range evolution; induced plant resistance; microencapsulation; myrosinase; plant-insect interactions
We experimentally reanalyzed the classic interaction between Pieris rapae, a specialist lepidopteran herbivore, and isothiocyanates (mustard oils) that are characteristic phytochemicals of the Brassicaceae. Previous investigations have suggested that P. rapae is unaffected by isothiocyanates. Using whole plants, root extracts, and a microencapsulated formulation of allyl isothiocyanate, we now show that isothiocyanates reduce herbivore survival and growth, and increase development time, each in a dose-dependent manner. Neither the substrate allyl glucosinolate, nor myrosinase, the enzyme that results in the breakdown of glucosinolates, negatively affected P. rapae. Thus, we present strong evidence for a role for isothiocyanates in plant resistance against the specialist herbivore P. rapae.
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