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首页> 外文期刊>Journal of Experimental Botany >Synergism in the effect of prior jasmonic acid application on herbivore-induced volatile emission by Lima bean plants: transcription of a monoterpene synthase gene and volatile emission.
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Synergism in the effect of prior jasmonic acid application on herbivore-induced volatile emission by Lima bean plants: transcription of a monoterpene synthase gene and volatile emission.

机译：先前施用茉莉酸对利马豆植物对草食动物诱导的挥发性排放的协同作用：单萜合酶基因的转录和挥发性排放。

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摘要

Jasmonic acid (JA) plays a central role in induced plant defence e.g. by regulating the biosynthesis of herbivore-induced plant volatiles that mediate the attraction of natural enemies of herbivores. Moreover, exogenous application of JA can be used to elicit plant defence responses similar to those induced by biting-chewing herbivores and mites that pierce cells and consume their contents. In the present study, we used Lima bean ( Phaseolus lunatus) plants to explore how application of a low dose of JA followed by minor herbivory by spider mites ( Tetranychus urticae) affects transcript levels of P. lunatus ( E)-beta-ocimene synthase ( PlOS), emission of ( E)-beta-ocimene and nine other plant volatiles commonly associated with herbivory. Furthermore, we investigated the plant's phytohormonal response. Application of a low dose of JA increased PlOS transcript levels in a synergistic manner when followed by minor herbivory for both simultaneous and sequential infestation. Emission of ( E)-beta-ocimene was also increased, and only JA, but not SA, levels were affected by treatments. Projection to latent structures-discriminant analysis (PLS-DA) of other volatiles showed overlap between treatments. Thus, a low-dose JA application results in a synergistic effect on gene transcription and an increased emission of a volatile compound involved in indirect defence after herbivore infestation.
机译：茉莉酸（JA）在诱导植物防御中起着中心作用，例如通过调节草食动物诱导的植物挥发物的生物合成，这些植物介导草食动物天敌的吸引力。此外，JA的外源应用可用于引发植物防御反应，类似于通过咬食草食动物和螨虫刺穿细胞并消耗其内含物诱导的反应。在本研究中，我们使用利马豆（Phaseolus lunatus）植物来研究低剂量的JA继之以微小的草食性蜘蛛螨（Tetranychus urticae）的施用如何影响P. lunatus（E）-beta-ocimene合酶的转录水平（PlOS），（E）-beta-ocimene和其他9种通常与草食动物相关的植物挥发物的排放。此外，我们调查了植物的植物激素反应。当同时和顺序侵染时，少量次要草食后，低剂量JA的施用以协同方式提高PlOS转录水平。 （E）-β-ocimene的排放也增加了，只有JA而不是SA的水平受到治疗的影响。投影到其他挥发物的潜在结构-判别分析（PLS-DA）显示处理之间存在重叠。因此，低剂量的JA施用可对基因转录产生协同作用，并增加草食动物侵染后涉及间接防御的挥发性化合物的排放。

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