生物
先天免疫系统
植物免疫
免疫
细胞生物学
活性氧
叶绿体
钙信号传导
免疫系统
信号转导
细胞器
植物对草食的防御
免疫学
生物化学
拟南芥
基因
突变体
作者
Simon Stael,Przemyslaw Kmiecik,Patrick J. Willems,Katrien Van Der Kelen,Núria S. Coll,Markus Teige,Frank Van Breusegem
标识
DOI:10.1016/j.tplants.2014.10.002
摘要
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.
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