Department of Molecular Ecology, Max Planck Institute for Chemical Ecology, Jena, Germany.
Plant Signal Behav. 2011 Sep;6(9):1256-8. doi: 10.4161/psb.6.9.16552.
Recent investigations showed that the model plant Arabidopsis thaliana specifically responds to herbivory-associated molecular patterns by activating a sophisticated signaling network. The lipase activity of insect oral secretions was shown to elevate oxylipin levels when applied to puncture wounds in leaves. The results also demonstrated that the oral secretions of the generalist Schistocerca gregaria contained other, probably non-proteinous, elicitors of plant defense responses which induced mitogen-activated protein kinases, calcium signaling and ethylene levels. This addendum presents data on the levels of additional phytohormones that are elevated after application of S. gregaria oral secretion to wounded leaves. Abscisic acid and salicylic acid levels are significantly elevated after elicitation with S. gregaria oral secretions, adding another layer of complexity to the herbivory-induced response of A. thaliana.
最近的研究表明，模式植物拟南芥通过激活一个复杂的信号网络来特异性地响应与取食相关的分子模式。昆虫唾液中的脂酶活性在叶片刺伤时被证明能升高氧代脂素水平。结果还表明，沙蝗的唾液中还含有其他可能是非蛋白质的植物防御反应的激发子，这些激发子诱导了丝裂原激活的蛋白激酶、钙信号和乙烯水平。本增刊提供了在将沙蝗唾液应用于受伤叶片后，其他几种植物激素水平升高的数据。用沙蝗唾液诱导后，脱落酸和水杨酸的水平显著升高，为拟南芥的取食诱导反应增加了另一层复杂性。
