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Deposition of α-pinene oxidation products on plant surfaces affects plant VOC emission and herbivore feeding and oviposition.
Environmental Pollution ( IF 8.9 ) Pub Date : 2020-04-02 , DOI: 10.1016/j.envpol.2020.114437
Adedayo O Mofikoya 1 , Pasi Yli-Pirilä 1 , Minna Kivimäenpää 1 , James D Blande 1 , Annele Virtanen 2 , Jarmo K Holopainen 1
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White cabbage, Brassica oleracea, plants and artificial leaves covered with B. oleracea epicuticular wax were exposed to α-pinene and α-pinene oxidation products formed through the oxidation of α-pinene by ozone (O3) and hydroxyl (OH) radicals. O3 and OH-induced oxidation of α-pinene led to the formation of oxygenated volatile organic compounds (OVOCs) and secondary organic aerosol particles (SOA), referred to together as oxidation products (OP). Exposure of cabbage plants to O3 and OH-induced α-pinene OP led to the deposition and re-emission of gas-phase OP by exposed cabbage plants. In a series of 2-choice bioassays, the specialist cruciferous herbivore, Plutella xylostella adults deposited less eggs on artificial leaves exposed to α-pinene OP than on control plants exposed to clean filtered air. P. xylostella larvae did not show a specific feeding preference when offered leaves from different exposure treatments. However, the generalist Indian stick insect, Carausius morosus, fed more on control filtered air-exposed plants than on those exposed to α-pinene OP. Taken together, our results show that exposure to α-pinene oxidation products affects VOC emissions of B. oleracea and alters P. xylostella oviposition and C. morosus feeding responses.

中文翻译:

α-pine烯氧化产物在植物表面的沉积会影响植物VOC的排放以及草食动物的摄食和产卵。

将白菜,甘蓝油菜,油菜皮表皮蜡覆盖的植物和人造叶暴露于α-pine烯和通过臭氧(O3)和羟基(OH)自由基氧化α-pine烯形成的α-pine烯氧化产物。O3和OH诱导的α-pine烯的氧化导致形成氧化性挥发性有机化合物(OVOC)和次要有机气溶胶颗粒(SOA),统称为氧化产物(OP)。卷心菜植物暴露于O3和OH诱导的α-pine烯OP导致裸露的卷心菜植物沉积并重新排放气相OP。在一系列的2选择生物测定法中,十字花科的食草动物是专门的十字花科小菜蛾,成虫在暴露于α-pine烯OP的人造叶子上沉积的卵比在暴露于干净的空气中的对照植物少。P. 当从不同暴露处理获得叶片时,小菜蛾幼虫没有表现出特定的摄食偏好。但是,通才的印度竹节虫Carausius morosus饲喂经过控制过滤的空气暴露的植物,而不是暴露于α-pine烯OP的植物。两者合计,我们的结果表明,暴露于α-pine烯氧化产物会影响油菜芽孢杆菌的VOC排放,并改变小菜蛾产卵和毛果饲料的摄食反应。
更新日期:2020-04-20
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