Plant-microbe-herbivore interactions in invasive and non-invasive alien plant species
Plant-microbe-herbivore interactions in invasive and non-invasive alien plant species
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DOI：
10.1111/1365-2435.12056
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发表时间：
2013-04-01
影响因子：
5.2
通讯作者：
van Kleunen, Mark
中科院分区：
文献类型：
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作者：
Kempel, Anne;Nater, Patrick;van Kleunen, Mark
植物与微生物、食草动物等多种生物相互作用，这些相互作用很可能影响植物的建立和传播。在植物入侵的背景下，菌根真菌和植物对食草动物的组成性和诱导性抗性已经受到了相互独立的关注。然而，植物经常参与复杂的多营养相互作用，这可能是不同的入侵和非入侵的外来植物。在一个多物种的比较实验中，我们的目的是提高我们的理解与入侵植物性状。我们测试了8种外来入侵植物是否以更有益的方式利用菌根共生，并且对两种通才生物测定食草动物具有更高水平的组成性或诱导性抗性，而不是9种非入侵外来物种。我们进一步评估了菌根真菌的存在是否改变了植物物种的抗性，以及这在入侵和非入侵外来物种之间是否存在差异。虽然入侵物种产生更多的生物量，但它们对菌根真菌的生物量反应与非入侵外来物种没有什么不同。入侵物种也没有更高水平的组成或诱导抵抗这两个通才草食动物。菌根真菌对我国植物的抗病性有很大影响，但这与外来种是否具有入侵性无关。我们的研究证实了先前的发现，即入侵物种通常比非入侵外来物种生长得更快，产生更多的生物量。我们进一步表明，外来植物物种使用各种防御策略，也改变了他们与菌根真菌的相互作用。这些多营养相互作用并不总是与外来植物物种的入侵性。我们认为，意识到这一事实，即外来植物物种参与多营养相互作用可能会导致一个更完整的理解的因素，有助于植物的成功。
Plants interact with many organisms, such as microbes and herbivores, and these interactions are likely to affect the establishment and spread of plants. In the context of plant invasions, mycorrhizal fungi and constitutive and induced resistance of plants against herbivores have received attention independently of each other. However, plants are frequently involved in complex multi-trophic interactions, which might differ between invasive and non-invasive alien plants. In a multi-species comparative experiment, we aimed to improve our understanding of plant traits associated with invasiveness. We tested whether eight invasive alien plant species use the mycorrhizal symbiosis in a more beneficial way, and have higher levels of constitutive or induced resistance against two generalist bioassay herbivores, than nine non-invasive alien species. We further assessed whether the presence of mycorrhizal fungi altered the resistance of the plant species, and whether this differed between invasive and non-invasive alien species. While invasive species produced more biomass, they did not differ in their biomass response to mycorrhizal fungi from non-invasive alien species. Invasive species also did not have higher levels of constitutive or induced resistance against the two generalist herbivores. Mycorrhizal fungi greatly affected the resistance of our plant species, however, this was also unrelated to whether the alien species were invasive or not. Our study confirms the previous findings that invasive species generally grow faster and produce more biomass than non-invasive alien species. We further show that alien plant species used a variety of defence strategies, and also varied in their interactions with mycorrhizal fungi. These multi-trophic interactions were not consistently related to invasiveness of the alien plant species. We suggest that awareness of the fact that alien plant species are involved in multi-trophic interactions might lead to a more complete understanding of the factors contributing to a plant's success.