Do Aphids Alter Leaf Surface Temperature Patterns During Early Infestation?
Do Aphids Alter Leaf Surface Temperature Patterns During Early Infestation?
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DOI：
10.3390/insects9010034
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发表时间：
2018-03-14
期刊：
影响因子：
3
通讯作者：
Pincebourde S
中科院分区：
文献类型：
--
作者：
Cahon T;Caillon R;Pincebourde S
植物表面的节肢动物生活在特殊的小气候条件下，这些条件可能与大气条件不同。植物叶温与气温有一定的偏差，叶温影响着小型昆虫的生理生态。然而，以叶组织为食的昆虫的活动可能会引起叶表面温度的变化，但这种影响很少得到证实。在受控环境条件下，利用叶面热成像分析，我们量化了苹果绿色蚜虫的存在对苹果叶片的温度分布在早期侵染的影响。蚜虫引起的轻微变化后，只有三天的侵染，主要是由于蚜虫的影响，可以发现在叶表面的最高温度的叶表面温度模式。蚜虫可能会诱导气孔关闭，导致蒸腾速率降低。这种影响是局部的，因为蚜虫修改了叶表面温度分布的配置。蚜虫被定位在接近最高叶面温度的温度，从而潜在地经历了热变化。昆虫取食活动对寄主植物的反馈效应可能是重要的，应该量化，以更好地预测植食性昆虫对环境变化的反应。
Arthropods at the surface of plants live in particular microclimatic conditions that can differ from atmospheric conditions. The temperature of plant leaves can deviate from air temperature, and leaf temperature influences the eco-physiology of small insects. The activity of insects feeding on leaf tissues, may, however, induce changes in leaf surface temperatures, but this effect was only rarely demonstrated. Using thermography analysis of leaf surfaces under controlled environmental conditions, we quantified the impact of presence of apple green aphids on the temperature distribution of apple leaves during early infestation. Aphids induced a slight change in leaf surface temperature patterns after only three days of infestation, mostly due to the effect of aphids on the maximal temperature that can be found at the leaf surface. Aphids may induce stomatal closure, leading to a lower transpiration rate. This effect was local since aphids modified the configuration of the temperature distribution over leaf surfaces. Aphids were positioned at temperatures near the maximal leaf surface temperatures, thus potentially experiencing the thermal changes. The feedback effect of feeding activity by insects on their host plant can be important and should be quantified to better predict the response of phytophagous insects to environmental changes.
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影响因子：
7.3
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