Figure 3

Relative gene expression of three transporter genes (A: a transporter of the ABC superfamily, B: a multidrug/pheromone exporter, and C: a permease of the major facilitator superfamily) of four D. magna clones from two different populations with (T1 and T2; tolerant population) or without (S1 and S2; sensitive population) naturally occurring cyanobacteria. D. magna were grown on 100% C. klinobasis with either control liposomes or with liposomes supplemented with microcystin LR. Asterisks indicate significant differences (p < 0.05; t-test) in gene expression in relation to gene expression on control liposomes (set to one; horizontal line).