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Abstract
背景回顾:Plants are constantly exposed to volatile organic compounds (VOCs) that are released during plant-plant communication, within-plant self-signaling, and plant-microbe interactions.
提出问题:Therefore, understanding VOC perception and downstream signaling is vital for unraveling the mechanisms behind information exchange in plants, which remain largely unexplored.
结果:Using the hormone-like function of volatile terpenoids in reproductive organ development as a system with a visual marker for communication, we demonstrate that a petunia karrikin-insensitive receptor, PhKAI2ia, stereospecifically perceives the (−)-germacrene D signal, triggering a KAI2-mediated signaling cascade and affecting plant fitness.
结论:This study uncovers the role(s) of the intermediate clade of KAI2 receptors, illuminates the involvement of a KAI2ia-dependent signaling pathway in volatile communication, and provides new insights into plant olfaction and the long-standing question about the nature of potential endogenous KAI2 ligand(s).
摘 要
植物一直暴露在挥发性有机化合物(VOCs)中,这些化合物在植物与植物的交流、植物内部的自我信号转导以及植物与微生物互作师被释放。因此,了解VOC感知及其下游的信号转导对于揭示植物信息交换背后的机制至关重要。作者利用了一个在植物生殖器官发育过程中,挥发性萜类化合物具有类似激素功能的特征作为研究体系,并配有一个植物信息交流的可视化标记,作者发现了一个矮牵牛karrikin不敏感受体PhKAI2ia,该受体能够立体定向感知(−)-germacrene D信号,从而诱导一个由KAI2介导的信号级联,最终影响植物的适应性。本文的研究揭示了KAI2受体中间分枝的作用,阐明了KAI2ia依赖性的信号转导途径在植物挥发性通信中的作用,为植物嗅觉及潜在内源性KAI2配基提供了新的视野。
普渡大学Natalia Dudareva该论文的通讯作者,Shannon A. Stirling为该论文的第一作者。该研究得到了美国国家科学基金会、美国农业部国家食品和农业研究所、CNRS IEA and AAP 圣艾蒂安大学相关项目的资助。
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