Figure 6.

Enhanced growth delay of the ndhB⁻ plastid transformants under humidity stress. Well-watered wild-type (left) and ndhB⁻ (right) plants were grown in low air humidity (30% and 40% relative humidity during the day and the night, respectively), following a month of growth under normal conditions (60% relative humidity). A visible growth difference was developed in less than a week under humidity stress. The development of freshly expanding leaves was specifically hindered in ndhB⁻ plants.