植物挥发性信号物质介导抗性的生态功能

Ecological function of the defense mediated by signal substances in plant volatiles

植物产生的挥发性化合物能够作为媒介参与植物与周围环境之间的信息交流及相互作用。植物挥发性物质在吸引传粉者、促进种子传播、抑制其它植物种子萌发等方面具有重要的作用。近年来,关于植物挥发性物质在生态系统中的信号作用研究已经成为国内外的研究热点,受到广泛关注。总结了植物挥发性物质作为信号物质在提高植物抗性方面的国内外研究成果,阐述了植物挥发性物质不仅能够直接提高植物的抗性,而且可以作为信号物质在同株、同种异株和不同种植物之间进行传递,进而间接提高目标植物的抗性。最后,还对植物挥发性物质的研究方法和潜在的生态功能进行了探讨。

Volatile organic compounds（VOCs） act as a media for plants to communicate and interact with the environment.Plant VOCs play a vital role for plants in attracting pollinators,promoting the dispersal of seeds,and having allopathic effect against germination of other species.In recent years,Plant VOCs as signals have been shown to play an important role in the ecosystem function,and have increasingly received more attention.The present paper reviewed advances in plant defense mediated by the signal function of plant VOCs.In some cases plant VOCs can have a direct defense mechanisms against herbivory.It is believed that VOCs can transfer within plant and between the plants of the same species and different species to improve the defense mechanisms of the respective plants,indicating their crucial role in ecosystem function.Finally,we discussed the research method and the potential ecological functions of plant VOCs.