Indole is an essential herbivore-induced volatile priming signal in maize.
Indole is an essential herbivore-induced volatile priming signal in maize.
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DOI：
10.1038/ncomms7273
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发表时间：
2015-02-16
影响因子：
16.6
通讯作者：
Turlings, Ted C. J.
中科院分区：
文献类型：
--
作者：
Erb, Matthias;Veyrat, Nathalie;Robert, Christelle A. M.;Xu, Hao;Frey, Monika;Ton, Jurriaan;Turlings, Ted C. J.
食草动物诱导的挥发性有机化合物引发未受攻击的植物组织对随后的攻击作出更强烈的反应。然而，触发这种启动状态的关键挥发物在很大程度上仍然没有得到确认。在玉米中，芳香化合物吲哚的释放是草食动物特异性的，并且比其他诱导反应发生得更早。因此，我们推测，吲哚可能参与空气中的启动。使用吲哚缺陷突变体和合成吲哚分配器，我们表明，草食动物诱导的吲哚增强防御挥发性物质在邻近的玉米植株中的诱导在一个物种特异性的方式。此外，吲哚的释放是必不可少的单萜和高萜类引发的系统性叶片中的攻击植物。吲哚暴露显着增加草食动物诱导的生产的应激激素茉莉酸-异亮氨酸共轭物和脱落酸，这代表了一个可能的机制吲哚依赖启动。这些结果表明，吲哚功能作为一个快速和有效的空中引发剂，准备系统组织和邻近的植物入侵攻击。 食草动物对植物组织的攻击使未被攻击的组织对随后的攻击做出更强烈的反应。在这里，Erb等人确定吲哚作为一种空气传播的引发信号，可以增强植食动物诱导的系统组织和邻近植物中的防御挥发性和应激激素的产生。
Herbivore-induced volatile organic compounds prime non-attacked plant tissues to respond more strongly to subsequent attacks. However, the key volatiles that trigger this primed state remain largely unidentified. In maize, the release of the aromatic compound indole is herbivore-specific and occurs earlier than other induced responses. We therefore hypothesized that indole may be involved in airborne priming. Using indole-deficient mutants and synthetic indole dispensers, we show that herbivore-induced indole enhances the induction of defensive volatiles in neighbouring maize plants in a species-specific manner. Furthermore, the release of indole is essential for priming of mono- and homoterpenes in systemic leaves of attacked plants. Indole exposure markedly increases the herbivore-induced production of the stress hormones jasmonate-isoleucine conjugate and abscisic acid, which represents a likely mechanism for indole-dependent priming. These results demonstrate that indole functions as a rapid and potent aerial priming agent that prepares systemic tissues and neighbouring plants for incoming attacks. Herbivore attack of plant tissue primes non-attacked tissue to respond more strongly to subsequent attacks. Here, Erb et al. identify indole as an airborne priming signal that enhances herbivore-induced defensive-volatile and stress-hormone production in systemic tissues and neighbouring plants.
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影响因子：
56.9
作者：
Frey, M;Chomet, P;Gierl, A
通讯作者：
Gierl, A
影响因子：
1.9
作者：
Gols, R;Posthumus, MA;Dicke, M
通讯作者：
Dicke, M
影响因子：
5.4
作者：
Butron, Ana;Chen, Y. C.;McMullen, M. D.
通讯作者：
McMullen, M. D.
DOI：
10.1073/pnas.260499897
发表时间：
2000-12-19
影响因子：
11.1
作者：
Frey, M;Stettner, C;Gierl, A
通讯作者：
Gierl, A
影响因子：
7.2
作者：
Bate, NJ;Rothstein, SJ
通讯作者：
Rothstein, SJ