Herbivore species, infestation time, and herbivore density affect induced volatiles in tea plants

Molecular cloning and expression of a jasmonate biosynthetic gene allene oxide cyclase from Camellia sinensis

“…In addition, geometrids biting induced higher CsAOC expression than tea green leafhoppers. This result is similar to a previous study which suggests that geometrids attack induces more complex volatiles in tea plants than green leafhopper infestation (Cai et al 2014). This previous study also showed that the volatiles induced by leafhopper and MeJA were similar.…”

Beetle feeding induces a different volatile emission pattern from black poplar foliage than caterpillar herbivory

“…5 Insects from different feeding guilds (e.g., sucking, chewing, mining or galling insects) are especially reported to induce different volatile blends. [6][7][8] These differential plant responses are thought to be due to differences in the elicitors present in insect oral secretions, in the mode of feeding, or in the host specificity of the insects or the timing of attack. 9 However, most evidence for herbivore species-specific volatile emission comes from short lived herbaceous species.…”

“…For this reason, it is difficult to directly compare the amount of volatile emission caused by insects with very different feeding modes. 6 The fact that poplar is host to many species of herbivores facilitates future experiments with insects from other feeding guilds such as aphids and leaf miners, to explore the issue of volatile specificity in more depth. Such specificity is readily exploited by herbivore enemies in searching for prey and hosts, depending on the diet breadth of the enemy.…”

Plants under dual attack : consequences for plant chemistry and parasitoid behavior

“…While this is understandable, as it can be necessary to limit the complexity of oftentimes already complex experiments and research questions, further effort should be made to address the influence of herbivore density on plant-herbivore and plantnatural enemy interactions. During attack by a single herbivore, herbivore density can strongly affect plant volatile emissions (Shiojiri et al, 2010;Cai et al, 2014;Truong et al, 2014) and also its metabolome (Ossipov et al, 2014), so when these density effects are coupled to the effects of dual herbivore attack, important interactive effects should be expected. Other studies have included density effects (Zhang et al, 2009;Kroes et al, 2015;De Rijk et al, 2016a), and show that during dual herbivore attack, interference in plant defenses generally occurs at the higher tested density.…”