Figure 8. Respiration in tobacco leaves exposed to drought and salt stress.

Thirty-day-old WT and transgenic plants were exposed for 10 days to 200 mM mannitol or 175 mM NaCl and were then allowed to recover for three days by watering with pure water. The data shown represent the means of three replicate measurements. Asterisks (** and*) indicate significant differences relative to WT plants in each treatment and each time point (P<0.0001 and P<0.01, respectively, n = 5).