Shiojiri Kaori, Ishizaki Satomi, Ozawa Rika, Karban Richard
a Faculty of Agriculture; Ryukoku University ; Otsu , Japan.
b Department of Natural Environmental Science ; Niigata University ; Niigata , Japan.
Plant Signal Behav. 2015;10(12):e1095416. doi: 10.1080/15592324.2015.1095416.
When plants receive volatiles from a damaged plant, the receivers become more resistant to herbivory. This phenomenon has been reported in many plant species and called plant-plant communication. Lab experiments have suggested that several compounds may be functioning as airborne signals. The objective of this study is to identify potential airborne signals used in communication between sagebrush (Artemisia tridentata) individuals in the field. We collected volatiles of one branch from each of 99 sagebrush individual plants. Eighteen different volatiles were detected by GC-MS analysis. Among these, 4 compounds; 1.8-cineol, β-caryophyllene, α-pinene and borneol, were investigated as signals of communication under natural conditions. The branches which received either 1,8-cineol or β-caryophyllene tended to get less damage than controls. These results suggested that 1,8-cineol and β-caryophyllene should be considered further as possible candidates for generalized airborne signals in sagebrush.
当植物接收到来自受损植物的挥发物时，接收者对食草动物的抵抗力会增强。这种现象在许多植物物种中都有报道，被称为植物间通讯。实验室实验表明，几种化合物可能作为空气传播信号发挥作用。本研究的目的是确定野外山艾树（Artemisia tridentata）个体之间通讯中使用的潜在空气传播信号。我们从99株山艾树个体植物中各采集了一个枝条的挥发物。通过气相色谱-质谱分析检测到18种不同的挥发物。其中，4种化合物；1,8-桉叶素、β-石竹烯、α-蒎烯和冰片，在自然条件下作为通讯信号进行了研究。接受1,8-桉叶素或β-石竹烯的枝条比对照枝条受到的损害往往更少。这些结果表明，1,8-桉叶素和β-石竹烯应进一步被视为山艾树中普遍存在的空气传播信号的可能候选物。
