Flexibility in the Light Reactions of Photosynthesis By

......................................................................................6 Introduction...................................................................................8 Figure legend........................................................................................................34 Figure........................................................................................36 References...................................................................................37 CHAPTER 2: MODULATION OF ENERGY DEPENDENT QUENCHING OF EXCITONS (qE) IN ANTENNA OF HIGHER PLANTS......................................44 Abstract......................................................................................44 Introduction.................................................................................46 Materials and Methods.....................................................................50 Plant Material......................................................................50 Gas Composition...................................................................50 Spectroscopic Assays.............................................................51 In vivo measurements of proton flux and pmf characteristics................52 Results and Discussion.........................................................................................55 Conclusions..................................................................................58