VOC-mediated within-plant communications and nonvolatile systemic signals upregulate pyrethrin biosynthesis in wounded seedlings of Chrysanthemum cinerariaefolium

Journal of Plant Interactions

Hirokazu Ueda¹ 

关键词: pyrethrins;    Chrysanthemum cinerariaefolium;    biosynthesis;    wounding;    volatile organic compounds;   

DOI  :  10.1080/17429145.2011.555566

学科分类：生物科学（综合）

来源: Taylor & Francis

【 摘 要 】

Abstract Natural pyrethrins biosynthesized by Chrysanthemum cinerariaefolium exhibit insecticidal activity, thereby acting as a defense system against herbivores. Here, we study the effects of mechanical wounding and wound-induced volatile organic compounds (VOCs) on pyrethrin biosynthesis in the seedlings of C. cinerariaefolium. Mechanical wounding resulted in enhanced content of pyrethrins I and II in the seedlings. Wrapping the intact leaves of the wounded seedlings prevented the increase in pyrethrin I but not in pyrethrin II, suggesting that the wound-induced VOCs are involved in the regulation of pyrethrin I biosynthesis, whereas nonvolatile systemic signals play a more important role than the wound-induced VOCs in the regulation of pyrethrin II biosynthesis.

【 授权许可】

Unknown