Light as both an input and an output of wound-induced reactive oxygen formation in Arabidopsis leaves
Light as both an input and an output of wound-induced reactive oxygen formation in Arabidopsis leaves
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DOI：
10.4161/psb.6.8.15823
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发表时间：
2011-01-01
影响因子：
2.9
通讯作者：
Roberts, Michael R.
中科院分区：
文献类型：
--
作者：
Morker, Krishna H.;Roberts, Michael R.
植物的创伤反应的特征在于基因表达、生物化学和生理学的快速变化，并且在其自身权利和作为研究由草食动物引起的事件的模型方面都是重要的。我们最近发现光和拟南芥叶片的伤口反应之间的联系。这包括外部光环境对创伤的分子和生物化学反应的影响，以及观察到内源性生物发光（光发射）是组织损伤的结果。在这里，我们表明，这种联系延伸到活性氧的生产。我们表明，创伤导致快速，光依赖性生产的超氧化物和过氧化氢在叶绿体中通过破坏光合作用，伤口诱导的生物发光是单线态氧的产生的后果。
The wound response of plants is characterized by rapid changes in gene expression, biochemistry and physiology, and is important both in its own right and as a model for studying events elicited by herbivory. We have recently identified links between light and the wound response in Arabidopsis leaves. This includes an influence of the external light environment on the molecular and biochemical response to wounding, and the observation that endogenous bioluminescence (light emission) is a consequence of tissue damage. Here, we show that this link extends to the production of reactive oxygen species. We show that wounding causes rapid, light-dependent production of superoxide and hydrogen peroxide in chloroplasts via disruption of photosynthesis, and that wound-induced bioluminescence is a consequence of the generation of singlet oxygen.