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ROS Are Good

Mittler, Ron

Trends in plant science, 2017-01, Vol.22 (1), p.11-19 [Periódico revisado por pares]

England: Elsevier Ltd

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  • Título:
    ROS Are Good
  • Autor: Mittler, Ron
  • Assuntos: Apoptosis ; Biological activity ; Byproducts ; Cell death ; Cells ; Gene Expression Regulation, Plant - genetics ; Gene Expression Regulation, Plant - physiology ; Metabolism ; Oxidation ; Oxidation-Reduction ; Oxidative stress ; Oxygen ; Physiology ; Plant biology ; Plants (botany) ; Plants - metabolism ; Reactive oxygen species ; Reactive Oxygen Species - metabolism ; redox biology ; ROS ; ROS network ; Signal Transduction - genetics ; Signal Transduction - physiology ; Studies ; Viability
  • É parte de: Trends in plant science, 2017-01, Vol.22 (1), p.11-19
  • Notas: ObjectType-Article-1
    SourceType-Scholarly Journals-1
    ObjectType-Feature-3
    content type line 23
    ObjectType-Review-2
  • Descrição: Reactive oxygen species (ROS) are thought to play a dual role in plant biology. They are required for many important signaling reactions, but are also toxic byproducts of aerobic metabolism. Recent studies revealed that ROS are necessary for the progression of several basic biological processes including cellular proliferation and differentiation. Moreover, cell death–that was previously thought to be the outcome of ROS directly killing cells by oxidation, in other words via oxidative stress–is now considered to be the result of ROS triggering a physiological or programmed pathway for cell death. This Opinion focuses on the possibility that ROS are beneficial to plants, supporting cellular proliferation, physiological function, and viability, and that maintaining a basal level of ROS in cells is essential for life. ROS function in cells as signaling molecules, but are also thought of as the unavoidable toxic byproducts of aerobic metabolism. Some organisms display tolerance to extreme ROS levels, highlighting the possibility that ROS might not be as toxic as previously thought. Some cell death processes originally thought to result from the direct toxicity of ROS (i.e., oxidative stress) were recently shown to be part of a programmed/physiological cell death pathway. Recent studies suggest that a basal level of ROS is necessary for basic biological processes such as cellular proliferation and differentiation. ROS are predominantly beneficial to cells, supporting basic cellular processes and viability, and oxidative stress is only an outcome of a deliberate activation of a physiological cell death pathway. Maintaining a basal level of ROS in cells is essential for life.
  • Editor: England: Elsevier Ltd
  • Idioma: Inglês
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