Table 1.

Scoring the presence of stress responses in adaxial pavement cells

	Normal sample (3 h)	Detached (3 h)	Sample attached to plant (3 h)	Submerged (3 h)	Special chamber (6.5 h)
19 DAS	✓	✕	✓	✕	✕
20 DAS	✓/✕	✕	✓/✕	✕	✕

Different conditions are tested for leaves of 19 and 20 DAS. The stress response, determined as the presence of strong aligned microtubules within the adaxial pavement cells as observed in the positive control (normal sample, 3 h), is scored for the 4 different conditions, whereby a ✓ marks the presence and an X the absence of stress patterns.