CIS-JASMONE INDUCED DEFENCE IN BRASSICAS

There is a need to develop new ways of protecting plants against aphid attack. Here, we investigated the effect of a plant defence activator, <i>cis</i>-jasmone (CJ), in a range of cultivars of <i>Brassica napus</i>, <i>Brassica rapa</i> and <i>Brassica oleracea</i>. Plants were sprayed with <i>cis</i>-jasmone or blank formulation. Increases in volatile emission were found in CJ induced plants but varied with genotype. Among the synthetic volatile compounds that were induced in the headspace of CJ treated brassica cultivars, methyl isothiocyanate, methyl salicylate and <i>cis</i>-jasmone were most repellent to aphids. These results build on earlier studies in <i>Arabidopsis</i> and show that tritrophic interactions are influenced by CJ in a wide range of brassica germplasm. The implication is that CJ is a promising treatment that could be used in brassica crops as part of an integrated pest management system. HERE WE PROVIDE DATA ON THE EMISSION OF VOLATILES RELEASED BY CIS-JASMONE TREATED (CJ) AND NON-TREATED (CONTROL) BRASSICA PLANTS当前亟需开发防治植物蚜虫侵害的新型防控手段。本研究针对甘蓝型油菜（Brassica napus）、白菜型油菜（Brassica rapa）及甘蓝（Brassica oleracea）的多个栽培品种，探究了植物防御激活剂顺式茉莉酮（cis-jasmone, CJ）的作用效果。我们分别用顺式茉莉酮或空白对照制剂喷施供试植株。结果显示，经CJ诱导的植株挥发性物质释放量显著升高，但该诱导效果因基因型不同而存在差异。在CJ处理的芸苔属品种顶空所诱导产生的合成挥发性化合物中，异硫氰酸甲酯（methyl isothiocyanate）、水杨酸甲酯（methyl salicylate）和顺式茉莉酮对蚜虫的驱避活性最为突出。本研究结果基于此前在拟南芥（Arabidopsis）中的相关研究，证实顺式茉莉酮可对多种芸苔属种质资源中的三营养级互作产生调控影响。研究表明，顺式茉莉酮是一种极具应用前景的防控药剂，可作为害虫综合治理体系的组成部分应用于芸苔属作物种植。本数据集提供了经顺式茉莉酮（CJ）处理与未经处理（对照）的芸苔属植株所释放的挥发性物质排放数据。