Both mechanical damage and insect herbivory make plants emit damage - induced volatiles which not only have the functions of indirect and direct defenses but also can server as interplant . alarming signal 摘要植物在遭受到机械损伤或昆虫取食后释放出的伤诱导挥发物，除了具有间接防御和直接防御功能外，还具有作为报警信号在植株间传递伤害信息的作用。
