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Open AccessFeature PaperReview

Oxygen and ROS in Photosynthesis

Department of Biochemistry/Molecular Plant Biology, University of Turku, FI-20014 Turku, Finland
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Plants 2020, 9(1), 91; https://doi.org/10.3390/plants9010091
Received: 27 November 2019 / Revised: 29 December 2019 / Accepted: 2 January 2020 / Published: 10 January 2020
(This article belongs to the Special Issue ROS Responses in Plants)
Oxygen is a natural acceptor of electrons in the respiratory pathway of aerobic organisms and in many other biochemical reactions. Aerobic metabolism is always associated with the formation of reactive oxygen species (ROS). ROS may damage biomolecules but are also involved in regulatory functions of photosynthetic organisms. This review presents the main properties of ROS, the formation of ROS in the photosynthetic electron transport chain and in the stroma of chloroplasts, and ROS scavenging systems of thylakoid membrane and stroma. Effects of ROS on the photosynthetic apparatus and their roles in redox signaling are discussed.
Keywords: reactive oxygen species; chloroplasts; photosynthetic electron transport chain; photodamage; redox signaling reactive oxygen species; chloroplasts; photosynthetic electron transport chain; photodamage; redox signaling
MDPI and ACS Style

Khorobrykh, S.; Havurinne, V.; Mattila, H.; Tyystjärvi, E. Oxygen and ROS in Photosynthesis. Plants 2020, 9, 91.

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