Reactive Oxygen Species Function to Mediate the Fe Deficiency Response in an Fe-Efficient Apple Genotype: An Early Response Mechanism for Enhancing Reactive Oxygen Production.

Reactive Oxygen Species Function to Mediate the Fe Deficiency Response in an Fe-Efficient Apple Genotype: An Early Response Mechanism for Enhancing Reactive Oxygen Production.
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活性氧的功能可介导效率的Apple基因型中的FE缺乏反应:增强活性氧产生的早期反应机制。

DOI:
10.3389/fpls.2016.01726
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发表时间:
2016
影响因子:
5.6
通讯作者:
Han Z
Han Z
中科院分区:
生物学2区
文献类型:
--
作者:
Sun C;Wu T;Zhai L;Li D;Zhang X;Xu X;Ma H;Wang Y;Han Z

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活性氧(Reactive oxygen species,ROS)是植物逆境适应过程中重要的信号分子。本研究表明,活性氧在缺铁诱导的小金海棠早期信号转导中起着重要作用。一旦ROS产生已经开始,长期的Fe饥饿导致ROS清除机制的激活。此外,我们证明,ROS清除剂参与维持细胞的氧化还原稳态在长期缺铁治疗。综上所述,我们的研究结果描述了一个反馈抑制环的活性氧,以保持氧化还原稳态,并保持连续的缺铁反应,在铁高效木本植物M。小金藻更广泛地说,这项研究揭示了一个新的机制,其中ROS介导的积极和消极的调节植物对缺铁胁迫的反应。
Reactive oxygen species (ROS) are important signaling molecules in plants that contribute to stress acclimation. This study demonstrated that ROS play a critical role in Fe deficiency-induced signaling at an early stage in Malus xiaojinensis. Once ROS production has been initiated, prolonged Fe starvation leads to activation of ROS scavenging mechanisms. Further, we demonstrated that ROS scavengers are involved in maintaining the cellular redox homeostasis during prolonged Fe deficiency treatment. Taken together, our results describe a feedback repression loop for ROS to preserve redox homeostasis and maintain a continuous Fe deficiency response in the Fe-efficient woody plant M. xiaojinensis. More broadly, this study reveals a new mechanism in which ROS mediate both positive and negative regulation of plant responses to Fe deficiency stress.
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发表时间: 2012-02
影响因子: 6.9
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