ArticlePlant, cell & environment2022
Pine defense against eggs of an herbivorous sawfly is elicited by an annexin-like protein present in egg-associated secretion.
Article in Plant, cell & environment, 2022. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 12 papers.
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12 citing papers in PubMed, 30 citations in OpenAlex.
- Augmenting riceProceedings of the National Academy of Sciences of the United States of America · 2025Article
- The glutamate receptor-like GLR2.7 modulates insect egg-induced defense responses in Arabidopsis.The New phytologist · 2025Article
- An Insect Effector Mimics Its Host Immune Regulator to Undermine Plant Immunity.Advanced science (Weinheim, Baden-Wurttemberg, Germany) · 2025Article
- The SA-WRKY70-PR-Callose Axis Mediates Plant Defense Against Whitefly Eggs.International journal of molecular sciences · 2024Article
- Advances in molecular interactions between rice and insect herbivores.Crop health · 2024Review
- The impact of insect egg deposition on Pinus sylvestris transcriptomic and phytohormonal responses to larval herbivory.Tree physiology · 2024Article
- Plant defensive responses to insect eggs are inducible by general egg-associated elicitors.Scientific reports · 2024Article
- Elm tree defences against a specialist herbivore are moderately primed by an infestation in the previous season.Tree physiology · 2023Article
- Dynamic environmental interactions shaped by vegetative plant volatiles.Natural product reports · 2023Review
- The captivating role of calcium in plant-microbe interaction.Frontiers in plant science · 2023Review
- Insect egg-induced innate immunity: Who benefits?PLoS pathogens · 2023Article
- Proteinaceous elicitor from a secretion of egg-laying insect herbivore induces plant emission that attracts egg parasitoids.Plant, cell & environment · 2022Article
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6 authors at 2 institutions in 2 countries.
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No grant is acknowledged in the PubMed record.
Abstract
Known elicitors of plant defenses against eggs of herbivorous insects are low-molecular-weight organic compounds associated with the eggs. However, previous studies provided evidence that also proteinaceous compounds present in secretion associated with eggs of the herbivorous sawfly Diprion pini can elicit defensive responses in Pinus sylvestris. Pine responses induced by the proteinaceous secretion are known to result in enhanced emission of (E)-β-farnesene, which attracts egg parasitoids killing the eggs. Here, we aimed to identify the defense-eliciting protein and elucidate its function. After isolating the defense-eliciting protein from D. pini egg-associated secretion by ultrafiltration and gel electrophoresis, we identified it by MALDI-TOF mass spectrometry as an annexin-like protein, which we named 'diprionin'. Further GC-MS analyses showed that pine needles treated with heterologously expressed diprionin released enhanced quantities of (E)-β-farnesene. Our bioassays confirmed attractiveness of diprionin-treated pine to egg parasitoids. Expression of several pine candidate genes involved in terpene biosynthesis and regulation of ROS homeostasis was similarly affected by diprionin and natural sawfly egg deposition. However, the two treatments had different effects on expression of pathogenesis-related genes (PR1, PR5). Diprionin is the first egg-associated proteinaceous elicitor of indirect plant defense against insect eggs described so far.
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