Turnip aphids (Lipaphis erysimi) discriminate host plants based on the strain of Cauliflower mosaic virus infection
Turnip aphids (Lipaphis erysimi) discriminate host plants based on the strain of Cauliflower mosaic virus infection
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DOI：
10.9755/ejfa.2019.v31.i1.1903
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发表时间：
2019-01-01
影响因子：
1.1
通讯作者：
Schoelz, James
中科院分区：
文献类型：
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作者：
Adhab, Mustafa;Finke, Deborah;Schoelz, James
媒介对受病毒感染植物的偏好程度可以改变病毒流行的进程。本研究的目的是测试不同株系的花椰菜花叶病毒（CaMV）感染萝卜植株是否会影响萝卜蚜（Lipaphis erysimi）的取食偏好。在这项研究中使用了三种不同的CaMV菌株，它们在芜菁上引起不同类型的症状。这些菌株是NY8153（严重，导致中脉坏死和斑驳，伴有严重发育迟缓）、W260（轻度，导致花叶，伴有中度发育迟缓）和H12（无叶）。结果表明，芜菁蚜虫一般喜欢W260感染的植物。当有选择时，蚜虫选择W260感染的植物比选择NY8153感染或健康的植物更频繁。W260感染的植物与H12感染的植物显示出相同方向的趋势。此外，蚜虫选择感染H12的植物比健康植物更频繁。相比之下，芜菁蚜虫在NY8153感染的和健康的植物之间，或者在NY8153感染的和H12感染的植物之间没有表现出偏好。因此，我们得出结论，蚜虫可以识别感染不同菌株的CaMV的植物，并会选择具有特定菌株的植物。具体来说，蚜虫更喜欢W260感染的萝卜超过其他选择。这些结果表明，病毒感染影响蚜虫的寄主选择，这可能对不同病毒株的传播有影响。
The degree of vector preference for virus-infected plants can alter the progress of virus epidemics. The objective of this study is to test whether infection of turnip plants with different strains of Cauliflower mosaic virus (CaMV) can influence the feeding preference of the turnip aphid (Lipaphis erysimi). Three different strains of CaMV that cause different types of symptoms on turnips were used in this study. These strains were NY8153 (severe, causes necrosis of the midrib and mottling with severe stunting), W260 (mild, causes mosaic with moderate stunting) and H12 (symptomless). Results showed that turnip aphids preferred W260-infected plants, in general. When given a choice, aphids chose W260-infected plants significantly more often than NY8153-infected or healthy plants. W260-infected vs. H12-infected plants showed a trend in the same direction. Also, aphids chose plants infected with H12 more often than healthy plants when given a choice. By contrast, turnip aphids showed no preference between NY8153-infected and healthy plants, or between NY8153-infected and H12-infected plants. Therefore, we conclude that aphids can recognize plants infected with different strains of CaMV and will choose plants with specific strains over others. Specifically, aphids prefer W260-infected turnips over other choices. These results suggest that virus infection affects the aphid host choice and this may have implications for the spread of different virus strains.