%A CHEN Yue , , XU Da-Quan %T Dissociation of Photosystem II Light-harvesting Complex (LHC II ) from the Reaction Center Complex Induced by Saturating White Irradiation Differs from the Transition from State1 to State 2 Induced by Weak Red Irradiation %0 Journal Article %D 2009 %J Plant Diversity %R 10.3724 SP.J.1143.2009.08127 %P 67-74 %V 31 %N 1 %U {https://journal.kib.ac.cn/CN/abstract/article_30040.shtml} %8 2009-02-25 %X The effects of different irradiance pre-treatments on leaf photosynthesis and low temperature ( 77K) chlorophyll
fluorescence (LTCF) parameters F685 , F735 , and F685􊄯F735 were observed in Arabidopsis, wheat , and soybean leaves
. The curve of photosynthetic responsing to irradiance transition from saturating to limiting one in Arabidopsis wild- type
leaves was the V pattern , while the curve in Arabidopsis mutant lacking chloroplast protein kinase STN7 was the L pattern .
Saturating white irradiation (SWI ) could induce the significantly decreased F685􊄯F735 without a significantly increased
F735 , while weak red irradiation (WRI) could lead to the significantly declined F685􊄯F735 with a significantly increased
F735 . The results showed that the attachment of dissociated LHC II to PS I in Arabidopsis wild-type leaves , indicating that
WRI can cause the transition from state 1 to sate 2 , while SWI can only induce LHC II dissociation from PSII reaction cen-ter complex . Moreover the results of LTCF analysis demonstrated that SWI could induce the LHC II dissociation in soybean
but not wheat leaves , while WRI could cause the state transition in wheat but not soybean leaves . Hence the LHC II dissociation
caused by SWI in Arabidopsis wild-type and soybean leaves was not a typical phenomenon of the state transition .