Excess manganese increases photosynthetic activity via enhanced reducing center and antenna plasticity in Chlorella vulgaris.

ABSTRACT: Photosynthesis relies on many easily oxidizable/reducible transition metals found in the metalloenzymes that make up much of the photosynthetic electron transport chain (ETC). One of these is manganese, an essential cofactor of photosystem II (PSII) and a component of the oxygen-evolving complex, the only biological entity capable of oxidizing water. Additionally, manganese is a cofactor in enzymatic antioxidants, notably the superoxide dismutases-which are localized to the chloroplastic membrane. However, unlike other metals found in the photosynthetic ETC, previous research has shown exposure to excess manganese enhances photosynthetic activity rather than diminishing it. In this study, the impact of PSII heterogeneity on overall performance was investigated using chlorophyll fluorescenc

SUBMITTER: Smythers AL 

PROVIDER: S-EPMC10338473 | biostudies-literature | 2023 Jul

REPOSITORIES: biostudies-literature