Oviposition-Induced Changes in Arabidopsis Genome Expression Anticipating Your Enemy?
Oviposition-Induced Changes in Arabidopsis Genome Expression Anticipating Your Enemy?
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DOI：
10.4161/psb.2.3.3690
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发表时间：
2007-01-01
影响因子：
2.9
通讯作者：
Reymond, Philippe
中科院分区：
文献类型：
--
作者：
Bruessow, Friederike;Reymond, Philippe
植物已经进化出精致的方式来检测它们的敌人，并能够诱导针对特定侵略者的防御反应。昆虫卵沉积在叶子上代表着未来的威胁，因为从卵中孵化出来的幼虫最终将以植物为食。虽然对产卵的直接和间接的防御已被记录，我们的知识的卵沉积所引发的分子变化是有限的。利用全基因组微阵列，我们最近分析了拟南芥叶片产卵后的两个粉蝶的表达谱。大型白色菜粉蝶所产的卵改变了数百个基因的表达。转录本签名包括防御和应激相关基因，这些基因也在经历局部细胞死亡的植物中被诱导。进一步的分析表明，与过敏反应相关的细胞变化发生在卵子沉积部位，它们是由卵子衍生的激发子引发的。我们的研究为之前在其他植物物种中观察到的产卵诱导坏死提供了分子证据，并可能说明植物对卵的直接防御。在本附录中，我们讨论了产卵诱导的基因表达变化的相关性和植物利用卵作为线索来预测它们的敌人的可能性。
Plants have evolved exquisite ways to detect their enemies and are able to induce defenses responses tailored to their specific aggressors. Insect eggs deposited on a leaf represent a future threat as larvae hatching from the egg will ultimately feed on the plant. Although direct and indirect defenses towards oviposition have been documented, our knowledge of the molecular changes triggered by egg deposition is limited. Using a whole-genome microarray, we recently analyzed the expression profile of Arabidopsis thaliana leaves after oviposition by two pierid butterflies. Eggs laid by the large white Pieris brassicae modified the expression of hundreds of genes. The transcript signature included defense and stress-related genes that were also induced in plants experiencing localized cell death. Further analyses revealed that cellular changes associated with a hypersensitive response occur at the site of egg deposition and that they are triggered by egg-derived elicitors. Our study brings molecular evidence for previous observations of oviposition-induced necrosis in other plant species and might illustrate a direct defense of the plant against the egg. In this addendum, we discuss the relevance of the oviposition-induced gene expression changes and the possibility that plants use eggs as cues to anticipate their enemies.