Abstract:Nitrate reduction and subsequent ammonium assimilation require reducing equivalents directly produced by the photosynthetic electron transport chain. Therefore, it has been suggested that nitrate assimilation provides a valuable sink for excess electrons under high-light (HL) conditions, which protects the photosynthetic apparatus from excessive harmful reactive oxygen species. This work experimentally tested this hypothesis by monitoring photosynthetic efficiency and the chloroplastic glutathione redox state … Show more
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