Silencing the jasmonate cascade: Induced plant defenses and insect populations
Silencing the jasmonate cascade: Induced plant defenses and insect populations
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DOI：
10.1126/science.1096931
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发表时间：
2004-07-30
期刊：
影响因子：
56.9
通讯作者：
Baldwin, IT
中科院分区：
文献类型：
--
作者：
Kessler, A;Halitschke, R;Baldwin, IT
我们转化了原生烟草，烟草衰减，沉默其脂氧合酶，氢过氧化物裂解酶，和丙二烯氧化物合酶基因，以抑制oxlipin信号，已知介导植物的直接和间接防御。当种植到原生生境中时，脂氧合酶缺乏的植物更容易受到N。attenuata的适应草食动物，但也吸引了新的草食动物物种，喂养和繁殖成功。除了强调基因沉默植物的价值，研究自然界中的生态相互作用，这些结果表明，脂氧合酶依赖的信号决定主机选择的机会主义草食动物和诱导防御影响草食动物群落组成。
We transformed the native tobacco, Nicotiana attenuata, to silence its lipoxygenase, hydroperoxide lyase, and allene oxide synthase genes in order to inhibit oxylipin signaling, known to mediate the plant's direct and indirect defenses. When planted into native habitats, lipoxygenase-deficient plants were more vulnerable to N. attenuata's adapted herbivores but also attracted novel herbivore species, which fed and reproduced successfully. In addition to highlighting the value of genetically silencing plants to study ecological interactions in nature, these results show that lipoxygenase-dependent signaling determines host selection for opportunistic herbivores and that induced defenses influence herbivore community composition.