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Please use this identifier to cite or link to this item: https://hdl.handle.net/2445/217641
α-Tocopherol in chloroplasts: Nothing more than an antioxidant?
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Among the eight forms of vitamin E, only tocopherols are essential compounds that are distributed throughout the entire plant kingdom, with α-tocopherol being the most predominant form in photosynthetic tissues. At the cellular level, α-tocopherol is of special relevance inside the chloroplast, where it eliminates singlet oxygen and modulates lipid peroxidation. This is of utmost relevance since tocopherols are the only antioxidants that counteract lipid peroxidation. Moreover, at the whole-plant level, α-tocopherol appears to modulate several physiological processes from germination to senescence. The antioxidant role of α-tocopherol at the cellular level can have profound effects at the whole-plant level, including the modulation of physiological processes that are apparently not related to redox processes and could be considered non-antioxidant functions. Here, we discuss whether non-antioxidant functions of α-tocopherol at the whole-plant level are mediated by its antioxidant role in chloroplasts and the regulation of redox processes at the cellular level.
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MESA PARRA, Tania and MUNNÉ BOSCH, Sergi. α-Tocopherol in chloroplasts: Nothing more than an antioxidant?. Current Opinion in Plant Biology. 2023. Vol. 74, num. 1-11. ISSN 1369-5266. [consulted: 16 of August of 2026]. Available at: https://hdl.handle.net/2445/217641