A Method of obtaining Phloem Sap via the Mouth-parts of Aphids
A Method of obtaining Phloem Sap via the Mouth-parts of Aphids
复制标题
一种通过蚜虫口器获取韧皮部汁液的方法
DOI：
10.1038/171528a0
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发表时间：
1953
期刊：
影响因子：
64.8
通讯作者：
T. E. Mittler
中科院分区：
文献类型：
--
作者：
J. Kennedy;T. E. Mittler
虽然蚜虫和球虫被称为“吸食”昆虫，但有时也有人建议，由昆虫建立的或甚至独立于昆虫的力量在植物内部辅助取食过程。尤斯特和富尔顿观察到，在柠檬中滋养的球虫脱离后，液体从破裂的嘴巴中渗出，嵌入柠檬中。渗出物在柠檬皮上形成池塘，从柠檬皮中提取样本进行糖分分析。当对Aphis fabæScope 3取食偏好的实验扩展到对其他相似植物上膨大和枯萎的叶片进行比较时，枯萎的叶片被证明是不太容易被蚜虫接受的。通过切断上颌口器的口部，可以验证这样一种推断，即蚜虫更多地依赖于植物组织中的膨胀压力，而不是它们自己的吸力，以维持植物汁液通过其上颌口针内极细的食物管道的流动。以豆类为食的个体。在这里，也观察到液体从植物表面突出的刺树桩中渗出。
ALTHOUGH aphids and coccids are known as ‘sucking’ insects, suggestions have been made from time to time1that forces within the plant, set up by or even independent of the insect, assisted in the feeding process. Yust and Fulton2observed fluid exuding from broken-off mouth-parts left embedded in lemons after detachment of the coccids which had been feeding there. The exudate formed pools on the lemon skins from which samples were taken for sugar analyses. When experiments on the feeding preferences ofAphis fabæScopoli3were extended to the comparison of turgid and wilting leaves on otherwise similar plants, the wilting leaves proved to be less acceptable to the aphids. The inference that aphids depend less on their own sucking power than on the turgor pressure in the plant tissue, to maintain the flow of plant sap through the exceedingly fine food canal within their maxillary stylets, was checked by severing the mouth-parts ofA. fabæindividuals feeding on beans. Here, too, fluid was observed to exude from the stylet stumps left projecting from the plant surface.