**2. Results**

To test whether faster 2-PG removal can improve abiotic stress tolerance, we reinvestigated the previously generated *PGLP* overexpressor lines O9 and O1. Both contain decreased absolute 2-PG amounts and display lower O2 inhibition of photosynthesis and altered stomatal features [10]. First, wild-type and *PGLP* overexpressor plants were grown under standard conditions (Figure 1A) and used for combined gas exchange and chlorophyll a fluorescence measurements to characterize their response to short-time light and temperature stresses (Figure 1B). Second, all genotypes were pre-grown under standard conditions and then exposed to two different long-term abiotic stresses, namely, water deficiency and higher temperatures (Figure 1C,D).
