Phytohormones Signaling Pathways and ROS Involvement in Seed Germination.
Phytohormones Signaling Pathways and ROS Involvement in Seed Germination.
复制标题
植物激素信号通路和 ROS 参与种子萌发。
DOI：
10.3389/fpls.2016.00864
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发表时间：
2016
影响因子：
5.6
通讯作者：
Karpiński S
中科院分区：
文献类型：
--
作者：
Oracz K;Karpiński S
植物激素和活性氧（ROS）是植物发育和胁迫反应调节的主要决定因素。在这些生物体的生命周期中，植物生长调节剂和活性氧的信号网络相互作用，以产生适当的发育和环境反应。在植物的光合作用（例如叶子）和非光合作用（例如种子）组织中，ROS产生的增强和次优通常与应激有关，在极端情况下，应激可能对细胞、整个器官甚至生物体致命。然而，ROS 的受控产生对于细胞信号传导来说是值得赞赏的。尽管目前植物生物学取得了进展，并且越来越多的发现揭示了 ROS 和激素信号传导在发芽中的作用，但仍然存在一些问题，例如，ROS 修饰的下游蛋白质靶标是什么，能够实现种子的刺激特异性细胞反应？或者哪些分子调节剂允许 ROS/植物激素相互作用以及它们在种子生命中的功能是什么？在这篇特别的综述中，讨论了一些转录因子、激酶和磷酸酶的作用，特别是那些通常已知参与植物胁迫下活性氧和激素信号转导的因子，也可能在种子中发生的过程的调节中发挥作用。总结了有关特定 ROS 和植物激素相关调节蛋白及其整合的最新发现，提出了一种新颖的、可能的病变模拟疾病 1、增强疾病易感性 1 和植物抗毒素缺乏 4 在种子生命过程中发挥作用的模型。
Phytohormones and reactive oxygen species (ROS) are major determinants of the regulation of development and stress responses in plants. During life cycle of these organisms, signaling networks of plant growth regulators and ROS interact in order to render an appropriate developmental and environmental response. In plant’s photosynthetic (e.g., leaves) and non-photosynthetic (e.g., seeds) tissues, enhanced and suboptimal ROS production is usually associated with stress, which in extreme cases can be lethal to cells, a whole organ or even an organism. However, controlled production of ROS is appreciated for cellular signaling. Despite the current progress that has been made in plant biology and increasing number of findings that have revealed roles of ROS and hormonal signaling in germination, some questions still arise, e.g., what are the downstream protein targets modified by ROS enabling stimulus-specific cellular responses of the seed? Or which molecular regulators allow ROS/phytohormones interactions and what is their function in seed life? In this particular review the role of some transcription factors, kinases and phosphatases is discussed, especially those which usually known to be involved in ROS and hormonal signal transduction under stress in plants, may also play a role in the regulation of processes occurring in seeds. The summarized recent findings regarding particular ROS- and phytohormones-related regulatory proteins, as well as their integration, allowed to propose a novel, possible model of action of LESION SIMULATING DISEASE 1, ENHANCED DISEASE SUSCEPTIBILITY 1, and PHYTOALEXIN DEFICIENT 4 functioning during seeds life.