Acclimation of Photosynthesis to Changes in the Environment Results in Decreases of Oxidative Stress in .

The dynamic acclimation of photosynthesis plays an important role in increasing the fitness of a plant under variable light environments. Since acclimation is partially mediated by a glucose-6-phosphate/phosphate translocator 2 (GPT2), this study examined whether plants lacking GPT2, which consequently have defective acclimation to increases in light, are more susceptible to oxidative stress. To understand this mechanism, we used the model plant [accession Wassilewskija-4 (Ws-4)] and compared it with mutants lacking GPT2.

Dynamic Acclimation to High Light in Involves Widespread Reengineering of the Leaf Proteome.

Leaves of transferred from low to high light increase their capacity for photosynthesis, a process of dynamic acclimation. A mutant, , lacking a chloroplast glucose-6-phosphate/phosphate translocator, is deficient in its ability to acclimate to increased light. Here, we have used a label-free proteomics approach, to perform relative quantitation of 1993 proteins from Arabidopsis wild type and leaves exposed to increased light.