Herbivory induced non-local responses of the clonal invader Carpobrotus edulis are not mediated by clonal integration.
Herbivory induced non-local responses of the clonal invader Carpobrotus edulis are not mediated by clonal integration.
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DOI：
10.1016/j.scitotenv.2018.03.264
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发表时间：
2018-03
期刊：
影响因子：
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通讯作者：
Jonatan Rodríguez;Mariasole Calbi;S. Roiloa;L. González
中科院分区：
文献类型：
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作者：
Jonatan Rodríguez;Mariasole Calbi;S. Roiloa;L. González
世界各地物种的人为迁移导致了本地和外来物种共存的新环境状况。外来植物必须面对本地食草动物，外来植物与本地食草动物之间的相互作用似乎在某些外来植物物种的入侵中起着重要作用。我们研究了克隆整合在克隆入侵carpobrotus edulis诱导抵抗本地蜗牛theba pisana攻击的形态、生理和生化反应中的作用。我们的研究结果证明了生理整合介导的劳动分工的存在，在未受攻击的整合框架中，光合潜能（在形态和生理上）显着增加。这种反应在草食动物中可能特别重要，因为ofT的负面影响。受攻击植物的光合结构。通过将光合活性的依赖性转移给未受攻击的分株，可以缓冲受攻击分株。我们的研究结果还显示了未受攻击的顶枝的本构抗性，显示出与受蜗牛攻击的基枝相似的防御化合物数量。结果表明，草食动物对根茎进行攻击时，根茎总生物量会增加，这是一种非局域补偿反应。我们将这一结果解释为一种补偿性反应，这些顶节增加了茎部生物量，以补偿由于食草动物的潜在攻击而造成的生物量损失。然而，这种非局部反应不是由生理整合介导的，而可能是由于地下通信，存在根分泌物释放的报警信号。我们的结论是，由于c对这种蜗牛的代偿反应，这种蜗牛的攻击不足以成为可能的生物控制。Edulis支持他们的扩张。未来的研究应侧重于揭示地下通信在c防御反应中的作用。可食的。
The anthropogenic displacement of species around the world results in new environmental situations where native and exotic species coexist. Exotic plants have to face native herbivores, and interactions between introduced plants and native herbivores seem to play an important role in the invasiveness of some exotic plant species. We studied the role of clonal integration in induce morphological, physiological, and biochemical responses in the clonal invaderCarpobrotus edulisagainst the attack of the native snailTheba pisana. Our results demonstrated the presence of labour division mediated by physiological integration, with a significant increase of photosynthesis potential (both at morphological and physiological) in un-attacked integrated ramets. This response could be especially important under herbivory, as the negative impact ofT. pisanaon the photosynthetic structures of attackedC. edulisramets could be buffered by transferring the dependence of photosynthetic activity to the un-attacked ramets. Our results also showed a constitutive resistance in un-attacked apical ramets, showing a similar amount of defence compounds to those exhibited in the basal branches attacked by snails. Results reported a non-local compensatory response, which there was an increase of total biomass in apical ramets when their basal ramets were attacked by the herbivore. We interpret this result as a compensatory response, with these apical ramets increasing shoot biomass to compensate for the biomass loss due to a potential attack from herbivores. However, this non-local response was not mediated by physiological integration but probably due to belowground communication, with the presence of alarm signals released by root exudates. We conclude that the attack of this snail is not enough to be a possible biological control due to the compensatory response to this snail byC. edulis, favouring their expansion. Future studies should focus on unravelling the role of belowground communication in the defensive responses ofC. edulis.