Plant innate immunity--sunny side up?
Plant innate immunity--sunny side up?
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DOI：
10.1016/j.tplants.2014.10.002
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发表时间：
2015-01
影响因子：
20.5
通讯作者：
Van Breusegem F
中科院分区：
文献类型：
--
作者：
Stael S;Kmiecik P;Willems P;Van Der Kelen K;Coll NS;Teige M;Van Breusegem F
活性氧（ROS）和钙依赖信号通路在植物先天免疫中发挥着重要作用。叶绿体承载着主要的生物合成途径，在能量产生、氧化还原稳态和逆行信号传导中起着核心作用。然而，细胞器在免疫中的重要性在某种程度上被忽视了。最近的研究结果表明，叶绿体还具有意想不到的功能，作为ROS和钙信号的中枢，在病原体攻击后的早期阶段影响免疫反应。在这篇观点文章中，我们讨论了植物先天免疫的叶绿体钙- ros信号分支。我们认为，这种叶绿体分支作为光依赖性变阻器，通过ROS的产生，影响免疫反应的严重程度。
Reactive oxygen species (ROS)- and calcium- dependent signaling pathways play well-established roles during plant innate immunity. Chloroplasts host major biosynthetic pathways and have central roles in energy production, redox homeostasis, and retrograde signaling. However, the organelle’s importance in immunity has been somehow overlooked. Recent findings suggest that the chloroplast also has an unanticipated function as a hub for ROS- and calcium-signaling that affects immunity responses at an early stage after pathogen attack. In this opinion article, we discuss a chloroplastic calcium-ROS signaling branch of plant innate immunity. We propose that this chloroplastic branch acts as a light-dependent rheostat that, through the production of ROS, influences the severity of the immune response.