[State transition of the photosynthetic apparatus in plant].
State transition of the photosynthetic apparatus in plants is a short-term adaptation mediated mainly by the reversible phosphorylation of the main light-harvesting complex protein (LHCII) and its migration between photosystem I (PSI) and photosystem II (PSII). In higher plants and Chlamydomonas, LHCII phosphorylation is mainly controlled by the redox state of plastoquinone pool and cytochrome b(6)f complex, while salt could induce a redox-independent LHCII phosphorylation via transient changes in ion concentrations in Dunaliella. State transition can balance the distribution of excitation energy between PSII and PSI by changes in light absorption cross section and excitation energy spillover between the two photosystems. The preliminary results got in the studies of green algae reveal that state transition can also balance the ATP supply and demand.
Liu
Xian-De
XD
Institute of Plant Physiology and Ecology, Shanghai Institutes for Biological Sciences, Chinese Academy of Sciences, Shanghai 200032, China.
Ma
Wei-Min
WM
Shen
Yun-Gang
YG
D000255:Adenosine Triphosphate / Q000378:metabolism; D010785:Photophosphorylation; D010788:Photosynthesis / Q000502:physiology*; D045322:Photosynthetic Reaction Center Complex Proteins / Q000378:metabolism*; D010940:Plant Proteins / Q000378:metabolism*
D045322:Photosynthetic Reaction Center Complex Proteins; D010940:Plant Proteins; D000255:Adenosine Triphosphate