Wageningen University, Laboratory of Entomology, Wageningen, The Netherlands; Wageningen University, Centre for Crop System Analysis, Wageningen, The Netherlands.
Wageningen University, Centre for Crop System Analysis, Wageningen, The Netherlands.
Trends Plant Sci. 2017 Apr;22(4):329-337. doi: 10.1016/j.tplants.2016.12.006. Epub 2017 Jan 13.
Plants downregulate their defences against insect herbivores upon impending competition for light. This has long been considered a resource trade-off, but recent advances in plant physiology and ecology suggest this mechanism is more complex. Here we propose that to understand why plants regulate and balance growth and defence, the complex dynamics in plant-plant competition and plant-herbivore interactions needs to be considered. Induced growth-defence responses affect plant competition and herbivore colonisation in space and time, which has consequences for the adaptive value of these responses. Assessing these complex interactions strongly benefits from advanced modelling tools that can model multitrophic interactions in space and time. Such an exercise will allow a critical re-evaluation why and how plants integrate defence and competition for light.
植物在即将面临光竞争时会下调其对昆虫食草动物的防御机制。长期以来，人们一直认为这是一种资源权衡，但植物生理学和生态学的最新进展表明，这种机制更为复杂。在这里，我们提出，为了理解为什么植物会调节和平衡生长和防御，需要考虑植物间竞争和植物与食草动物相互作用的复杂动态。诱导的生长-防御反应会影响植物在空间和时间上的竞争和食草动物的定殖，这对这些反应的适应价值有影响。评估这些复杂的相互作用强烈受益于先进的建模工具，这些工具可以在空间和时间上对多营养层相互作用进行建模。这样的练习将使人们能够批判性地重新评估植物为什么以及如何整合防御和对光的竞争。
