期刊
FRONTIERS IN PLANT SCIENCE
卷 11, 期 -, 页码 -出版社
FRONTIERS MEDIA SA
DOI: 10.3389/fpls.2020.552969
关键词
oxidative stress; reactive oxygen species; antioxidative defence system; cell; plants
资金
- University of Hradec Kralove (Faculty of Science) [VT2019-2021]
- University of Hradec Kralove, Hradec Kralove, Czechia [Prf-2206]
- Medical Faculty of the Military Medical Academy, University of Defense, Belgrade, Republic of Serbia [MFVMA/04/20-22]
In plants, there is a complex antioxidative system (AOS) operating to counteract reactive oxygen species (ROS) and maintain homeostasis within the cell. Plants have excellent antioxidative defense systems, and their antioxidant compounds have been utilized in various fields such as anti-aging formulations, food fortification, and designing therapies for diseases with oxidative stress.
In plants, there is a complex and multilevel network of the antioxidative system (AOS) operating to counteract harmful reactive species (RS), the foremost important of which are reactive oxygen species (ROS), and maintain homeostasis within the cell. Specific AOSs for plant cells are, first and foremost, enzymes of the glutathione-ascorbate cycle (Asc-GSH), followed by phenolic compounds and lipophilic antioxidants like carotenoids and tocopherols. Evidence that plant cells have excellent antioxidative defense systems is their ability to survive at H2O2 concentrations incompatible with animal cell life. For the survival of stressed plants, it is of particular importance that AOS cooperate and participate in redox reactions, therefore, providing better protection and regeneration of the active reduced forms. Considering that plants abound in antioxidant compounds, and humans are not predisposed to synthesize the majority of them, new fields of research have emerged. Antioxidant potential of plant compounds has been exploited for anti-aging formulations preparation, food fortification and preservation but also in designing new therapies for diseases with oxidative stress implicated in etiology.
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