Fig. 5.

Respiratory response of parsley cell suspension cultures after treatment with SA derivatives and Pep13. Oxygen transfer rate (OTR) as a function of time for three salicylic acid (SA) derivatives and one reference cultivation without additives (black squares). 100 μM salicylic acid (closed red circles), 100 μM 4-chlorosalicylic acid (left half orange left triangles), and 100 μM 3-hydroxybenzoic acid (open light red down triangles). Cultivation conditions: 250 mL flask volume, 50 mL filling volume, 180 rpm shaking frequency, 50 mm shaking diameter, and 25 °C. Arrow indicates the addition of the SA derivatives and Pep13