Hao Yu, Angela Buchholz, Iida Pullinen, Silja Saarela, Zijun Li, Annele Virtanen, James D. Blande
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引用次数: 0
Abstract
Biogenic secondary organic aerosols (SOAs) can be formed from the oxidation of plant volatiles in the atmosphere. Herbivore-induced plant volatiles (HIPVs) can elicit plant defenses, but whether such ecological functions persist after they form SOAs was previously unknown. Here we show that Scots pine seedlings damaged by large pine weevils feeding on their roots release HIPVs that trigger defenses in neighboring conspecific plants. The biological activity persisted after HIPVs had been oxidized to form SOAs, which was indicated by receivers displaying enhanced photosynthesis, primed volatile defenses, and reduced weevil damage. The elemental composition and quantity of SOAs likely determines their biological functions. This work demonstrates that plant-derived SOAs can mediate interactions between plants, highlighting their ecological significance in ecosystems.
大气中的植物挥发物氧化后可形成生物次生有机气溶胶(SOAs)。食草动物诱导的植物挥发物(HIPVs)可以激发植物防御功能,但这种生态功能在形成 SOAs 后是否会持续,以前还不得而知。在这里,我们发现被大型松象鼻虫取食根部的苏格兰松树幼苗会释放出 HIPVs,从而引发邻近同种植物的防御。在 HIPVs 被氧化形成 SOAs 之后,这种生物活性仍然存在,这表现在受体显示出光合作用增强、挥发性防御能力增强以及象鼻虫危害减轻。SOAs 的元素组成和数量可能决定了其生物功能。这项研究表明,植物产生的 SOAs 可以介导植物之间的相互作用,突出了它们在生态系统中的生态意义。
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