Plants and insect eggs: How do they affect each other?

► Phytochemicals influence mating and the production of insect eggs. ► The leaf boundary layer may affect egg deposition behaviour and embryo development. ► Insect egg deposition changes photosynthetic activity and secondary metabolism. ► Hypersensitive responses, formation of neoplasms, ovicidal substances harm the eggs. ► Changes of plant odour/leaf surface chemistry attract/arrest egg parasitoids.