Trade-offs in non-native plant herbivore defences enhance performance.
Trade-offs in non-native plant herbivore defences enhance performance.
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DOI：
10.1111/ele.14283
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发表时间：
2023-06
期刊：
影响因子：
8.8
通讯作者：
Xiao Sun;Yumei Sun;Xueyao Cao;Xincong Zhai;R. Callaway;Ji Wan;S. Flory;Wei Huang;Jianqing Ding
中科院分区：
文献类型：
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作者：
Xiao Sun;Yumei Sun;Xueyao Cao;Xincong Zhai;R. Callaway;Ji Wan;S. Flory;Wei Huang;Jianqing Ding
非本地植物通常从专业敌人那里释放出来，但继续受到多面手的攻击，尽管强度较低。这种减少的草食动物可能会导致较少的投资在组成防御和诱导防御的投资，潜在地降低防御成本。我们比较了27个非本地和59个本地物种在该领域的草食动物，并进行了生物测定和化学分析的12对非本地和本地同源。非原住民受到的伤害较小，其本构防御较弱，但诱导防御较原住民强。对于非本地人，本构防御的强度与草食动物的强度经历，而诱导防御显示相反。诱导防御的投资与增长呈正相关，这表明了一种新的机制，提高竞争力的演变。据我们所知，这些都是第一个联系的权衡报道，在植物防御的强度草食性，分配到组成与诱导防御，和增长。
Non-native plants are typically released from specialist enemies but continue to be attacked by generalists, albeit at lower intensities. This reduced herbivory may lead to less investment in constitutive defences and greater investment in induced defences, potentially reducing defence costs. We compared herbivory on 27 non-native and 59 native species in the field and conducted bioassays and chemical analyses on 12 pairs of non-native and native congeners. Non-natives suffered less damage and had weaker constitutive defences, but stronger induced defences than natives. For non-natives, the strength of constitutive defences was correlated with the intensity of herbivory experienced, whereas induced defences showed the reverse. Investment in induced defences correlated positively with growth, suggesting a novel mechanism for the evolution of increased competitive ability. To our knowledge, these are the first linkages reported among trade-offs in plant defences related to the intensity of herbivory, allocation to constitutive versus induced defences, and growth.