Insect egg-induced innate immunity: Who benefits?
2023
Elia Stahl | Louis-Philippe Maier | Philippe Reymond
Plants perceive the presence of insect eggs deposited on leaves as a cue of imminent herbivore attack. Consequential plant signaling events include the accumulation of salicylic acid and reactive oxygen species, transcriptional reprogramming, and cell death. Interestingly, egg-induced innate immunity shows similarities with immune responses triggered upon recognition of microbial pathogens, and in recent years, it became apparent that egg perception affects plant–microbe interactions. Here, we highlight recent findings on insect egg-induced innate immunity and how egg-mediated signaling impacts plant–microbe interactions. Ecological considerations beg the question: Who benefits from egg perception in these complex interactions?
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