甜橙植物中 Brevipalpus yothersi Baker(Tenuipalpidae)的发育受以前螨虫侵扰和庇护所存在的影响。

IF 1.8 2区 农林科学 Q2 ENTOMOLOGY
Experimental and Applied Acarology Pub Date : 2024-05-01 Epub Date: 2024-03-21 DOI:10.1007/s10493-024-00903-w
Ana Beatriz Piai Kapp, Jaqueline Franciosi Della Vechia, Thaís Elise Sinico, Renato Beozzo Bassanezi, Pedro Luis Ramos-González, Juliana Freitas-Astúa, Daniel Júnior Andrade
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引用次数: 0

摘要

柑橘白叶枯病是影响柑橘的最重要的病毒病。该病主要由 CiLV-C 引起,由 Brevipalpus yothersi Baker 螨虫传播。本研究对曾被带病毒或不带病毒的 B. yothersi 侵染过的柑橘[(Citrus × sinensis (L.) Osbeck (Rutaceae)]中 B. yothersi 的定殖情况进行了深入研究。该研究还评估了庇护所对 B. yothersi 行为的假定作用。通过 RT-qPCR 评估了植物防御机制标记 PR1 和 PR4 基因的表达情况,以确定植物激素变化在病毒-螨虫-植物三营养互作过程中的作用。非病毒螨和病毒螨之前的侵染对产卵和产卵后种群中的成螨数量有积极影响。曾受螨虫侵染的枝条上的螨虫数量高于未受螨虫侵染的枝条。茉莉酸(JA)途径中的标记基因 PR4 的表达在无蚜螨处理中有所增加,这表明植物对螨虫的取食做出了反应。相反,PR1(水杨酸(SA)途径的标记基因)的诱导表达主要出现在有毒蜘蛛的处理中,这表明植物对病原体的反应被激活了。无论是否存在 CiLV-C,较早的螨虫侵染、白粉病病斑的存在以及作为人工庇护所的石膏混合物,都促进了 B. yothersi 种群在第二次侵染后的增长。此外,有研究表明 B. yothersi 的摄食实际上诱导了植物的 JA 通路。与此同时,CiLV-C 会抑制 JA 途径,诱导 SA 途径,从而有利于螨媒介。
本文章由计算机程序翻译,如有差异,请以英文原文为准。

Brevipalpus yothersi Baker (Tenuipalpidae) development in sweet orange plants is influenced by previous mite infestation and the presence of shelters.

Brevipalpus yothersi Baker (Tenuipalpidae) development in sweet orange plants is influenced by previous mite infestation and the presence of shelters.

Citrus leprosis is the most important viral disease affecting citrus. The disease is caused predominantly by CiLV-C and is transmitted by Brevipalpus yothersi Baker mites. This study brings some insight into the colonization of B. yothersi in citrus [(Citrus × sinensis (L.) Osbeck (Rutaceae)] previously infested by viruliferous or non-viruliferous B. yothersi. It also assesses the putative role of shelters on the behavior of B. yothersi. Expression of PR1 and PR4 genes, markers of plant defense mechanisms, were evaluated by RT-qPCR to correlate the role of the plant hormonal changes during the tri-trophic virus-mite-plant interplay. A previous infestation with either non-viruliferous and viruliferous mites positively influenced oviposition and the number of adult individuals in the resulting populations. Mite populations were higher on branches that had received a previous mite infestation than branches that did not. There was an increase in the expression of PR4, a marker gene in the jasmonic acid (JA) pathway, in the treatment with non-viruliferous mites, indicating a response from the plant to their feeding. Conversely, an induced expression of PR1, a marker gene in the salicylic acid (SA) pathway, was observed mainly in the treatment with viruliferous mites, which suggests the activation of a plant response against the pathogen. The earlier mite infestation, as well as the presence of leprosis lesions and a gypsum mixture as artificial shelters, all fostered the growth of the B. yothersi populations after the second infestation, regardless of the presence or absence of CiLV-C. Furthermore, it is suggested that B. yothersi feeding actually induces the JA pathway in plants. At the same time, the CiLV-C represses the JA pathway and induces the SA pathway, which benefits the mite vector.

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来源期刊
CiteScore
3.90
自引率
9.10%
发文量
81
审稿时长
4-8 weeks
期刊介绍: Experimental and Applied Acarology publishes peer-reviewed original papers describing advances in basic and applied research on mites and ticks. Coverage encompasses all Acari, including those of environmental, agricultural, medical and veterinary importance, and all the ways in which they interact with other organisms (plants, arthropods and other animals). The subject matter draws upon a wide variety of disciplines, including evolutionary biology, ecology, epidemiology, physiology, biochemistry, toxicology, immunology, genetics, molecular biology and pest management sciences.
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