Accumulation of salicylic acid in tomato plant under biological stress affects oviposition preference of Bemisia tabaci
Accumulation of salicylic acid in tomato plant under biological stress affects oviposition preference of Bemisia tabaci
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DOI：
10.1080/17429145.2018.1550220
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发表时间：
2018-12
影响因子：
3.2
通讯作者：
H. Ueda;S. Kugimiya;J. Tabata;H. Kitamoto;I. Mitsuhara
中科院分区：
文献类型：
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作者：
H. Ueda;S. Kugimiya;J. Tabata;H. Kitamoto;I. Mitsuhara
摘要在田间，植物同时受到多种生物胁迫，如虫害和病原病毒感染。在这项研究中，我们构建了一个简单的三方实验系统，利用番茄植物，其害虫烟粉虱（粉虱），和传染性番茄花叶病毒（ToMV）。在选择试验中，粉虱在未感染的植株上比在感染ToMV的植株上产卵更多。此外，粉虱在未感染的植物上孵化得更多，生长得更好。水杨酸（SA）在受感染的植物中积累，并且参与SA产生和SA相关反应的基因的表达被显著诱导。这些植物对ToMV感染的反应类似于对粉虱攻击或SA处理的植物。为了研究植物内源SA对粉虱偏好的重要性，我们使用不能积累SA的NahG转基因番茄重复选择测试。粉虱没有表现出产卵偏好NahG植物与ToMV感染或粉虱侵染。总体而言，粉虱更喜欢健康的植物，SA积累响应生物胁迫参与他们的喜好。
ABSTRACT In field, plants are exposed to multiple biological stresses simultaneously; for example, insect damage and pathogenic virus infection. In this study, we constructed a simple tripartite experimental system using tomato plant, their insect pest Bemisia tabaci (whitefly), and infectious tomato mosaic virus (ToMV). In the choice test, whiteflies laid more eggs on uninfected plant than on ToMV-infected plant. Further, whiteflies hatched more and grew better on the uninfected plant. Salicylic acid (SA) accumulated in infected plants, and the expression of genes involved in SA production and SA-related response was significantly induced. These plant responses against ToMV infection were similar to those against whitefly attack or SA-treated plants. To examine the importance of plant endogenous SA for whitefly preference, we repeated the choice test using the NahG transgenic tomato that cannot accumulate SA. Whiteflies did not show oviposition preference between NahG plants with and without ToMV infection or whitefly infestation. Overall, whiteflies prefer healthy plants, and SA accumulation in response to biological stresses is involved in their preference.