The role of light-harvesting complex I in excitation energy transfer from LHCII to photosystem I in Arabidopsis.

ABSTRACT: Photosynthesis powers nearly all life on Earth. Light absorbed by photosystems drives the conversion of water and carbon dioxide into sugars. In plants, photosystem I (PSI) and photosystem II (PSII) work in series to drive the electron transport from water to NADP+. As both photosystems largely work in series, a balanced excitation pressure is required for optimal photosynthetic performance. Both photosystems are composed of a core and light-harvesting complexes (LHCI) for PSI and LHCII for PSII. When the light conditions favor the excitation of one photosystem over the other, a mobile pool of trimeric LHCII moves between both photosystems thus tuning their antenna cross-section in a process called state transitions. When PSII is overexcited multiple LHCIIs can associate with PSI. A trimer

SUBMITTER: Schiphorst C 

PROVIDER: S-EPMC8968287 | biostudies-literature | 2022 Mar

REPOSITORIES: biostudies-literature