Jennifer Selinski, Stephanie Frings, Romy Schmidt-Schippers
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引用次数: 0
摘要
植物在其生命过程中会不断经历以生物和非生物胁迫因子形式出现的各种不利环境条件。通过各种细胞器感知胁迫以及快速、有针对性的细胞反应对于植物建立抗胁迫能力至关重要。线粒体作为以 ATP 形式提供能量等价物的生物合成场所,往往直接受到外部胁迫因素的影响,从而使细胞内的多种生物过程得以进行。与此同时,线粒体功能可能会在可承受的范围内波动,而无需激活下游逆行信号级联来适应应激。在这篇焦点综述中,我们总结了线粒体感知和处理应激信号的知识现状,并展示了逆行信号的哪些层次(即涉及转录因子、代谢产物以及具有月光功能的酶的层次)能够实现与细胞核的通信。此外,还阐明了线粒体和叶绿体之间的信号整合是逆行信号的一部分。通过本期焦点综述,我们旨在说明如何进一步研究细胞器特异性通讯,并将收集到的数据长期用于加强植物在气候变化背景下的恢复能力。
Perception and processing of stress signals by plant mitochondria
In the course of their life, plants continuously experience a wide range of unfavourable environmental conditions in the form of biotic and abiotic stress factors. The perception of stress via various organelles and rapid, tailored cellular responses are essential for the establishment of plant stress resilience. Mitochondria as the biosynthetic sites of energy equivalents in the form of ATP—provided in order to enable a multitude of biological processes in the cell—are often directly impacted by external stress factors. At the same time, mitochondrial function may fluctuate to a tolerable extent without the need to activate downstream retrograde signalling cascades for stress adaptation. In this Focus Review, we summarise the current state of knowledge on the perception and processing of stress signals by mitochondria and show which layers of retrograde signalling, that is, those involving transcription factors, metabolites, but also enzymes with moonlighting functions, enable communication with the nucleus. Also, light is shed on signal integration between mitochondria and chloroplasts as part of retrograde signalling. With this Focus Review, we aim to show ways in which organelle-specific communication can be further researched and the collected data used in the long-term to strengthen plant resilience in the context of climate change.
期刊介绍:
Publishing the best original research papers in all key areas of modern plant biology from the world"s leading laboratories, The Plant Journal provides a dynamic forum for this ever growing international research community.
Plant science research is now at the forefront of research in the biological sciences, with breakthroughs in our understanding of fundamental processes in plants matching those in other organisms. The impact of molecular genetics and the availability of model and crop species can be seen in all aspects of plant biology. For publication in The Plant Journal the research must provide a highly significant new contribution to our understanding of plants and be of general interest to the plant science community.