Larval feeding induced defensive responses in tobacco: comparison of two sibling species of Helicoverpa with different diet breadths
Larval feeding induced defensive responses in tobacco: comparison of two sibling species of Helicoverpa with different diet breadths
复制标题
幼虫取食诱导烟草的防御反应：不同饮食宽度的两个同胞种 Helicoverpa 的比较
作者：
植物对不同的食草昆虫的伤害有不同的反应。我们推测具有不同寄主范围的兄弟草食性物种也可能对植物反应产生不同的影响。这种差异可能与食草动物的饮食宽度（专业化）在一个饲养公会，和专家可能会导致较低强度的植物反应比通才。烟草Nicotinana tabacum L.是通性棉铃虫Helicoverpa armigera（Hübner）和专性棉铃虫Helicoverpa armigera（Hübner）的共同寄主。（鳞翅目，夜蛾科）。比较了烟草对这两种昆虫取食和机械伤害的诱导反应。结果表明，特化H. assulta和通才H.棉铃虫诱导的防御系统相同，但植物的反应强度不同。茉莉酸（JA）、脂氧合酶（LOX）和蛋白酶抑制剂（PI）的诱导在这两种植物中没有显著差异，但H。烟青虫对烟草叶片多酚氧化酶（PPO）的诱导作用较弱，而对烟碱和过氧化物酶（POD）的诱导作用较强。armigera。植物对不同食物宽度的食草动物的防御反应比我们预期的要复杂得多，而且专家并不一定比通才引起的反应要弱。
Plants respond differently to damage by different herbivorous insects. We speculated that sibling herbivorous species with different host ranges might also influence plant responses differently. Such differences may be associated with the diet breadth (specialization) of herbivores within a feeding guild, and the specialist may cause less intensive plant responses than the generalist. The tobacco Nicotinana tabacum L. is the common host plant of a generalist Helicoverpa armigera (Hübner) and a specialist H. assulta Guenée (Lepidoptera, Noctuidae). The induced responses of tobacco to feeding of these two noctuid herbivores and mechanical wounding were compared. The results showed that the feeding of the specialist H. assulta and the generalist H. armigera resulted in the same inducible defensive system, but response intensity of plants was different to these two species. Inductions of jasmonic acid (JA), lipoxygenase (LOX), and proteinase inhibitors (PIs) were not significantly different concerning these two species, but H. assulta caused the less intensive foliar polyphenol oxidase (PPO) increase, more intensive nicotine and peroxidase (POD) increases in tobacco than H. armigera. The defensive response of plant to herbivores with different diet breadth seems to be more complicated than we expected, and the specialist does not necessarily cause less intensive plant responses than the generalist.
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DOI：
10.1046/j.1365-2311.1999.00178.x
发表时间：
1997
期刊：
--
影响因子：
--
作者：
R. Karban;I. Baldwin
通讯作者：
R. Karban;I. Baldwin
DOI：
--
发表时间：
2004
期刊：
--
影响因子：
--
作者：
ZONGNa;WANGChenzhu
通讯作者：
ZONGNa;WANGChenzhu
影响因子：
4.8
作者：
BALDWIN, IT;OHNMEISS, TE
通讯作者：
OHNMEISS, TE
影响因子：
2.7
作者：
BALDWIN, IT;OHNMEISS, TE
通讯作者：
OHNMEISS, TE
影响因子：
2.3
作者：
Baldwin, IT
通讯作者：
Baldwin, IT