Photosynthetic efficiency
To obtain information on the effect of overexpression of FbβCA on photosynthetic efficiency of Arabidopsis , Chl afluorescence was monitored as a non-invasive signature of photosynthesis, especially of PSII (see e.g., Govindjee, 1995; Govindjee, 2004). Various Chl a fluorescence parameters were measured as described under Materials and Methods. Our results on different parameters of photosynthesis are described below.
Electron transport rate (ETR II and ETR I): At the saturating light intensity (540 μmol photons m-2s-1), the calculated values of ETR II and ETR I were higher by 13% to 19% and 17% to 25% in the transgenics than in the VC plants (Fig. 3e,f).