High light stress induced not only a sustained form of xanthophyll cycle-dependent energy dissipation but also sustained thylakoid protein phosphorylation. The effect of protein phosphatase inhibitors ( @entity1388 and @entity7051 ions) on recovery from a 1-h exposure to a high PFD was examined in leaf discs of Parthenocissus quinquefolia (Virginia creeper). Inhibition of protein dephosphorylation induced @entity7695 retention and sustained energy dissipation (NPQ) upon return to low PFD for recovery, but had no significant effects on pigment and Chl fluorescence characteristics under high light exposure. In addition, whole plants of Monstera deliciosa and @entity2772 grown at low to moderate PFDs were transferred to high PFDs, and thylakoid protein phosphorylation pattern (assessed with anti- @entity8284 antibody) as well as pigment and Chl fluorescence characteristics were examined over several days. A correlation was obtained between dark-sustained D1/D2 phosphorylation and dark-sustained @entity7695 retention and maintenance of PS II in a state primed for energy dissipation in both species. The degree of these dark-sustained phenomena was more pronounced in M. deliciosa compared with @entity2772 . Moreover, M. deliciosa but not @entity2772 plants showed unusual phosphorylation patterns of Lhcb proteins with pronounced dark-sustained Lhcb phosphorylation even under low PFD growth conditions. Subsequent to the transfer to a high PFD, dark-sustained Lhcb protein phosphorylation was further enhanced. Thus, phosphorylation patterns of D1/D2 and Lhcb proteins differed from each other as well as among plant species. The results presented here suggest an association between dark-sustained D1/D2 phosphorylation and sustained retention of @entity7695 and energy dissipation (NPQ) in light-stressed, and particularly 'photoinhibited', leaves. Functional implications of these observations are discussed.

Correlation between persistent forms of XXXX -dependent energy dissipation and thylakoid protein phosphorylation.

@entity1388 :: ('MESH:D005459', 'Chemical') :: ['fluoride'] @entity2772 :: ('3562', 'Species') :: ['spinach'] @entity7695 :: ('MESH:C005881', 'Chemical') :: ['zeaxanthin'] @entity7051 :: ('MESH:C044659', 'Chemical') :: ['molybdate'] @entity8284 :: ('CHEBI:37525', 'Chemical') :: ['phosphothreonine']
@entity7695 :: (MESH:C005881,Chemical) :: ['zeaxanthin']
