Invasive Spartina alterniflora exhibits increased resistance but decreased tolerance to a generalist insect in China
Invasive Spartina alterniflora exhibits increased resistance but decreased tolerance to a generalist insect in China
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入侵互花米草对中国的综合性昆虫表现出抗性增强但耐受性下降
DOI：
10.1007/s10340-018-1020-y
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发表时间：
2018-07
影响因子：
4.8
通讯作者：
Li B
中科院分区：
文献类型：
--
作者：
Ju RT;Ma D;Siemann E;Liu X;Wu JH;Li B
几种解释入侵植物引入后进化的理论预测，特化天敌的释放往往会导致引入植物的防御能力下降，但引入范围内的新通才消费者如何影响植物防御进化仍然在很大程度上未被探索。根据转移防御假说，对专业敌人的防御减少可能导致对通才的防御增加。比较了互花米草（Spartina alterniflora）美国本地种群和中国入侵种群对中国优势通性昆虫多穗肋菜（Laelia coenosa）的抗性和耐受性。我们还比较了大米草种群起源之间的叶性状。我们发现，Laelia有较低的性能入侵比本地米草种群。然而，本地米草种群比入侵种群有更大的能力来补偿Laelia造成的叶子损害。虽然比叶面积和叶碳含量没有显着变化米草的起源，入侵米草种群叶氮含量低于本地种群。这些结果表明，在其引入中国，米草已开发出增加的电阻，但降低了宽容的通性草食动物，这可能与进化增加叶片的碳-氮比。这些发现增强了我们对入侵植物防御在引进范围内的通才食草动物的理解，并突出了抗性和耐受性之间的权衡。
Several theories explaining the post-introduction evolution of invasive plants predict that specialist-enemy release often leads to decreased defense in introduced plants, but how novel generalist consumers in the introduced ranges affect plant-defense evolution remains largely unexplored. According to the shifting defense hypothesis, the decreased defense against specialist enemies may result in the increased defense against generalists. We compared resistance and tolerance of native (from the USA) and invasive populations (from China) of Spartina alterniflora to the dominant generalist insect Laelia coenosa in China. We also compared leaf traits between Spartina population origins. We found that Laelia had lower performance on invasive than on native Spartina populations. Native Spartina populations, however, had a greater capacity to compensate for leaf damage by Laelia than invasive ones. Although specific leaf area and leaf carbon content did not significantly vary between Spartina origins, invasive Spartina populations had lower leaf-nitrogen content than native populations. These results suggest that, following its introduction to China, Spartina has developed increased resistance but decreased tolerance to the generalist herbivore, which may be related to evolutionary increases in leaf carbon-to-nitrogen ratio. These findings enhance our understanding of invasive plant defense against generalist herbivores in the introduced ranges and highlight the trade-off between resistance and tolerance.
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DOI：
10.1111/j.0014-3820.2003.tb00335.x
发表时间：
2003-06
期刊：
--
影响因子：
--
作者：
C. Weinig;J. Stinchcombe;J. Schmitt
通讯作者：
C. Weinig;J. Stinchcombe;J. Schmitt
影响因子：
3
作者：
Bossdorf, O;Schröder, S;Auge, H
通讯作者：
Auge, H
影响因子：
4.8
作者：
D. Strong;P. Stiling
通讯作者：
D. Strong;P. Stiling
影响因子：
5.9
作者：
Jianwen Zou;E. Siemann;W. E. Rogers;S. DeWalt
通讯作者：
Jianwen Zou;E. Siemann;W. E. Rogers;S. DeWalt
影响因子：
2.3
作者：
BOWERS, MD;PUTTICK, GM
通讯作者：
PUTTICK, GM